./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec3_product27.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_9952b2bb-161c-4a6f-9a4c-04b20f215851/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9952b2bb-161c-4a6f-9a4c-04b20f215851/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_9952b2bb-161c-4a6f-9a4c-04b20f215851/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9952b2bb-161c-4a6f-9a4c-04b20f215851/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec3_product27.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9952b2bb-161c-4a6f-9a4c-04b20f215851/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_9952b2bb-161c-4a6f-9a4c-04b20f215851/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 1c4d0e54eab5e94cf1a4af64165a2546f1c45e063bd8600195a743522777000c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:19:52,269 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:19:52,271 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:19:52,331 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:19:52,332 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:19:52,336 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:19:52,338 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:19:52,340 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:19:52,341 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:19:52,342 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:19:52,343 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:19:52,345 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:19:52,345 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:19:52,348 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:19:52,351 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:19:52,360 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:19:52,362 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:19:52,369 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:19:52,372 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:19:52,374 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:19:52,376 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:19:52,380 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:19:52,383 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:19:52,384 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:19:52,393 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:19:52,394 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:19:52,394 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:19:52,395 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:19:52,396 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:19:52,397 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:19:52,397 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:19:52,400 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:19:52,402 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:19:52,403 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:19:52,404 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:19:52,405 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:19:52,405 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:19:52,405 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:19:52,406 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:19:52,406 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:19:52,407 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:19:52,408 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9952b2bb-161c-4a6f-9a4c-04b20f215851/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 15:19:52,453 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:19:52,453 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:19:52,454 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:19:52,454 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:19:52,461 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:19:52,461 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:19:52,461 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:19:52,462 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:19:52,462 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 15:19:52,462 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 15:19:52,463 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 15:19:52,463 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:19:52,464 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 15:19:52,464 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 15:19:52,464 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 15:19:52,464 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 15:19:52,464 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 15:19:52,465 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:19:52,465 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 15:19:52,465 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:19:52,465 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:19:52,465 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 15:19:52,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:19:52,466 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:19:52,466 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 15:19:52,466 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 15:19:52,466 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 15:19:52,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 15:19:52,467 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 15:19:52,467 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 15:19:52,467 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 15:19:52,467 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:19:52,468 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_9952b2bb-161c-4a6f-9a4c-04b20f215851/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9952b2bb-161c-4a6f-9a4c-04b20f215851/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c4d0e54eab5e94cf1a4af64165a2546f1c45e063bd8600195a743522777000c [2021-11-22 15:19:52,727 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:19:52,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:19:52,756 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:19:52,758 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:19:52,758 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:19:52,759 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9952b2bb-161c-4a6f-9a4c-04b20f215851/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/product-lines/email_spec3_product27.cil.c [2021-11-22 15:19:52,827 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9952b2bb-161c-4a6f-9a4c-04b20f215851/bin/uautomizer-w2VwFs6gM0/data/3830838c1/20f406890fee4e3da22415990847001b/FLAGcafcc1026 [2021-11-22 15:19:53,433 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:19:53,434 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9952b2bb-161c-4a6f-9a4c-04b20f215851/sv-benchmarks/c/product-lines/email_spec3_product27.cil.c [2021-11-22 15:19:53,454 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9952b2bb-161c-4a6f-9a4c-04b20f215851/bin/uautomizer-w2VwFs6gM0/data/3830838c1/20f406890fee4e3da22415990847001b/FLAGcafcc1026 [2021-11-22 15:19:53,662 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9952b2bb-161c-4a6f-9a4c-04b20f215851/bin/uautomizer-w2VwFs6gM0/data/3830838c1/20f406890fee4e3da22415990847001b [2021-11-22 15:19:53,664 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:19:53,665 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:19:53,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:19:53,669 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:19:53,672 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:19:53,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:19:53" (1/1) ... [2021-11-22 15:19:53,675 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70fe42cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:19:53, skipping insertion in model container [2021-11-22 15:19:53,676 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:19:53" (1/1) ... [2021-11-22 15:19:53,683 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:19:53,766 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:19:54,419 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_9952b2bb-161c-4a6f-9a4c-04b20f215851/sv-benchmarks/c/product-lines/email_spec3_product27.cil.c[40661,40674] [2021-11-22 15:19:54,476 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:19:54,493 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 15:19:54,612 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_9952b2bb-161c-4a6f-9a4c-04b20f215851/sv-benchmarks/c/product-lines/email_spec3_product27.cil.c[40661,40674] [2021-11-22 15:19:54,653 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:19:54,690 INFO L208 MainTranslator]: Completed translation [2021-11-22 15:19:54,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:19:54 WrapperNode [2021-11-22 15:19:54,691 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:19:54,692 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 15:19:54,692 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 15:19:54,692 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 15:19:54,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:19:54" (1/1) ... [2021-11-22 15:19:54,736 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:19:54" (1/1) ... [2021-11-22 15:19:54,921 INFO L137 Inliner]: procedures = 134, calls = 237, calls flagged for inlining = 140, calls inlined = 378, statements flattened = 5948 [2021-11-22 15:19:54,922 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 15:19:54,923 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 15:19:54,924 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 15:19:54,924 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 15:19:54,932 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:19:54" (1/1) ... [2021-11-22 15:19:54,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:19:54" (1/1) ... [2021-11-22 15:19:54,966 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:19:54" (1/1) ... [2021-11-22 15:19:54,968 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:19:54" (1/1) ... [2021-11-22 15:19:55,052 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:19:54" (1/1) ... [2021-11-22 15:19:55,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:19:54" (1/1) ... [2021-11-22 15:19:55,110 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:19:54" (1/1) ... [2021-11-22 15:19:55,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 15:19:55,130 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 15:19:55,131 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 15:19:55,131 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 15:19:55,132 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:19:54" (1/1) ... [2021-11-22 15:19:55,141 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:19:55,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9952b2bb-161c-4a6f-9a4c-04b20f215851/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:19:55,163 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9952b2bb-161c-4a6f-9a4c-04b20f215851/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 15:19:55,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9952b2bb-161c-4a6f-9a4c-04b20f215851/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 15:19:55,212 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-22 15:19:55,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 15:19:55,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 15:19:55,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 15:19:55,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 15:19:55,520 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 15:19:55,521 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 15:19:57,506 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 15:19:57,534 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 15:19:57,534 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-22 15:19:57,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:19:57 BoogieIcfgContainer [2021-11-22 15:19:57,538 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 15:19:57,542 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 15:19:57,542 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 15:19:57,545 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 15:19:57,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:19:53" (1/3) ... [2021-11-22 15:19:57,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@188bf5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:19:57, skipping insertion in model container [2021-11-22 15:19:57,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:19:54" (2/3) ... [2021-11-22 15:19:57,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@188bf5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:19:57, skipping insertion in model container [2021-11-22 15:19:57,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:19:57" (3/3) ... [2021-11-22 15:19:57,549 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec3_product27.cil.c [2021-11-22 15:19:57,558 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 15:19:57,558 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-11-22 15:19:57,621 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 15:19:57,627 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-22 15:19:57,627 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-11-22 15:19:57,671 INFO L276 IsEmpty]: Start isEmpty. Operand has 1199 states, 1186 states have (on average 1.672849915682968) internal successors, (1984), 1198 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:19:57,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-22 15:19:57,686 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:19:57,687 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] [2021-11-22 15:19:57,687 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-22 15:19:57,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:19:57,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1872168860, now seen corresponding path program 1 times [2021-11-22 15:19:57,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:19:57,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341010468] [2021-11-22 15:19:57,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:19:57,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:19:57,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:19:58,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:19:58,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:19:58,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341010468] [2021-11-22 15:19:58,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341010468] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:19:58,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:19:58,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:19:58,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204400468] [2021-11-22 15:19:58,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:19:58,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:19:58,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:19:58,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:19:58,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:19:58,096 INFO L87 Difference]: Start difference. First operand has 1199 states, 1186 states have (on average 1.672849915682968) internal successors, (1984), 1198 states have internal predecessors, (1984), 0 states have call successors, (0), 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 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:19:58,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:19:58,393 INFO L93 Difference]: Finished difference Result 3532 states and 5864 transitions. [2021-11-22 15:19:58,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:19:58,395 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2021-11-22 15:19:58,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:19:58,429 INFO L225 Difference]: With dead ends: 3532 [2021-11-22 15:19:58,429 INFO L226 Difference]: Without dead ends: 1995 [2021-11-22 15:19:58,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:19:58,446 INFO L933 BasicCegarLoop]: 3875 mSDtfsCounter, 1933 mSDsluCounter, 1928 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1933 SdHoareTripleChecker+Valid, 5803 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:19:58,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1933 Valid, 5803 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:19:58,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1995 states. [2021-11-22 15:19:58,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1995 to 1008. [2021-11-22 15:19:58,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1008 states, 996 states have (on average 1.679718875502008) internal successors, (1673), 1007 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:19:58,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1673 transitions. [2021-11-22 15:19:58,584 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1673 transitions. Word has length 56 [2021-11-22 15:19:58,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:19:58,585 INFO L470 AbstractCegarLoop]: Abstraction has 1008 states and 1673 transitions. [2021-11-22 15:19:58,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:19:58,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1673 transitions. [2021-11-22 15:19:58,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-22 15:19:58,597 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:19:58,597 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:19:58,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 15:19:58,598 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-22 15:19:58,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:19:58,601 INFO L85 PathProgramCache]: Analyzing trace with hash 2009180275, now seen corresponding path program 1 times [2021-11-22 15:19:58,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:19:58,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132971868] [2021-11-22 15:19:58,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:19:58,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:19:58,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:19:58,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:19:58,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:19:58,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132971868] [2021-11-22 15:19:58,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132971868] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:19:58,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:19:58,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:19:58,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875888341] [2021-11-22 15:19:58,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:19:58,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:19:58,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:19:58,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:19:58,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:19:58,760 INFO L87 Difference]: Start difference. First operand 1008 states and 1673 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:19:59,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:19:59,038 INFO L93 Difference]: Finished difference Result 2965 states and 4927 transitions. [2021-11-22 15:19:59,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 15:19:59,039 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-11-22 15:19:59,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:19:59,055 INFO L225 Difference]: With dead ends: 2965 [2021-11-22 15:19:59,056 INFO L226 Difference]: Without dead ends: 1980 [2021-11-22 15:19:59,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-22 15:19:59,064 INFO L933 BasicCegarLoop]: 3254 mSDtfsCounter, 3300 mSDsluCounter, 4873 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3300 SdHoareTripleChecker+Valid, 8127 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:19:59,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3300 Valid, 8127 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:19:59,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1980 states. [2021-11-22 15:19:59,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1980 to 1008. [2021-11-22 15:19:59,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1008 states, 996 states have (on average 1.678714859437751) internal successors, (1672), 1007 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:19:59,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1672 transitions. [2021-11-22 15:19:59,136 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1672 transitions. Word has length 58 [2021-11-22 15:19:59,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:19:59,139 INFO L470 AbstractCegarLoop]: Abstraction has 1008 states and 1672 transitions. [2021-11-22 15:19:59,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:19:59,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1672 transitions. [2021-11-22 15:19:59,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-22 15:19:59,142 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:19:59,143 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] [2021-11-22 15:19:59,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 15:19:59,148 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-22 15:19:59,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:19:59,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1019105912, now seen corresponding path program 1 times [2021-11-22 15:19:59,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:19:59,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924284116] [2021-11-22 15:19:59,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:19:59,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:19:59,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:19:59,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:19:59,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:19:59,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924284116] [2021-11-22 15:19:59,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924284116] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:19:59,275 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:19:59,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:19:59,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375588301] [2021-11-22 15:19:59,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:19:59,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:19:59,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:19:59,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:19:59,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:19:59,279 INFO L87 Difference]: Start difference. First operand 1008 states and 1672 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:19:59,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:19:59,390 INFO L93 Difference]: Finished difference Result 1995 states and 3315 transitions. [2021-11-22 15:19:59,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:19:59,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-22 15:19:59,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:19:59,397 INFO L225 Difference]: With dead ends: 1995 [2021-11-22 15:19:59,397 INFO L226 Difference]: Without dead ends: 1015 [2021-11-22 15:19:59,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:19:59,400 INFO L933 BasicCegarLoop]: 1676 mSDtfsCounter, 1645 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1645 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:19:59,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1645 Valid, 1698 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:19:59,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2021-11-22 15:19:59,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 1008. [2021-11-22 15:19:59,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1008 states, 996 states have (on average 1.6757028112449799) internal successors, (1669), 1007 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:19:59,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1669 transitions. [2021-11-22 15:19:59,445 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1669 transitions. Word has length 59 [2021-11-22 15:19:59,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:19:59,445 INFO L470 AbstractCegarLoop]: Abstraction has 1008 states and 1669 transitions. [2021-11-22 15:19:59,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:19:59,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1669 transitions. [2021-11-22 15:19:59,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-22 15:19:59,447 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:19:59,447 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:19:59,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 15:19:59,448 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-22 15:19:59,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:19:59,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1504148259, now seen corresponding path program 1 times [2021-11-22 15:19:59,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:19:59,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366165067] [2021-11-22 15:19:59,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:19:59,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:19:59,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:19:59,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:19:59,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:19:59,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366165067] [2021-11-22 15:19:59,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366165067] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:19:59,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:19:59,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:19:59,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298948696] [2021-11-22 15:19:59,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:19:59,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:19:59,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:19:59,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:19:59,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:19:59,516 INFO L87 Difference]: Start difference. First operand 1008 states and 1669 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:19:59,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:19:59,742 INFO L93 Difference]: Finished difference Result 2952 states and 4904 transitions. [2021-11-22 15:19:59,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:19:59,743 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-22 15:19:59,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:19:59,756 INFO L225 Difference]: With dead ends: 2952 [2021-11-22 15:19:59,756 INFO L226 Difference]: Without dead ends: 1977 [2021-11-22 15:19:59,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:19:59,770 INFO L933 BasicCegarLoop]: 1653 mSDtfsCounter, 8096 mSDsluCounter, 1666 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8096 SdHoareTripleChecker+Valid, 3319 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:19:59,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8096 Valid, 3319 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:19:59,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1977 states. [2021-11-22 15:19:59,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1977 to 1008. [2021-11-22 15:19:59,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1008 states, 996 states have (on average 1.6746987951807228) internal successors, (1668), 1007 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:19:59,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1668 transitions. [2021-11-22 15:19:59,851 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1668 transitions. Word has length 61 [2021-11-22 15:19:59,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:19:59,853 INFO L470 AbstractCegarLoop]: Abstraction has 1008 states and 1668 transitions. [2021-11-22 15:19:59,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:19:59,853 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1668 transitions. [2021-11-22 15:19:59,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-22 15:19:59,856 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:19:59,856 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] [2021-11-22 15:19:59,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 15:19:59,857 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-22 15:19:59,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:19:59,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1337634034, now seen corresponding path program 1 times [2021-11-22 15:19:59,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:19:59,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361677571] [2021-11-22 15:19:59,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:19:59,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:19:59,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:19:59,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:19:59,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:19:59,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361677571] [2021-11-22 15:19:59,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361677571] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:19:59,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:19:59,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:19:59,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428644042] [2021-11-22 15:19:59,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:19:59,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:19:59,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:19:59,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:19:59,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:19:59,968 INFO L87 Difference]: Start difference. First operand 1008 states and 1668 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:00,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:20:00,218 INFO L93 Difference]: Finished difference Result 2959 states and 4910 transitions. [2021-11-22 15:20:00,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:20:00,218 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2021-11-22 15:20:00,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:20:00,231 INFO L225 Difference]: With dead ends: 2959 [2021-11-22 15:20:00,232 INFO L226 Difference]: Without dead ends: 1984 [2021-11-22 15:20:00,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:20:00,237 INFO L933 BasicCegarLoop]: 1652 mSDtfsCounter, 8100 mSDsluCounter, 1670 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8100 SdHoareTripleChecker+Valid, 3322 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:20:00,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8100 Valid, 3322 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:20:00,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1984 states. [2021-11-22 15:20:00,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1984 to 1008. [2021-11-22 15:20:00,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1008 states, 996 states have (on average 1.6736947791164658) internal successors, (1667), 1007 states have internal predecessors, (1667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:00,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1667 transitions. [2021-11-22 15:20:00,329 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1667 transitions. Word has length 62 [2021-11-22 15:20:00,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:20:00,330 INFO L470 AbstractCegarLoop]: Abstraction has 1008 states and 1667 transitions. [2021-11-22 15:20:00,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:00,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1667 transitions. [2021-11-22 15:20:00,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-22 15:20:00,336 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:20:00,336 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:20:00,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 15:20:00,337 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-22 15:20:00,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:20:00,338 INFO L85 PathProgramCache]: Analyzing trace with hash 690906328, now seen corresponding path program 1 times [2021-11-22 15:20:00,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:20:00,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912239112] [2021-11-22 15:20:00,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:20:00,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:20:00,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:20:00,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:20:00,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:20:00,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912239112] [2021-11-22 15:20:00,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912239112] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:20:00,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:20:00,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:20:00,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940134751] [2021-11-22 15:20:00,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:20:00,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:20:00,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:20:00,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:20:00,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:20:00,415 INFO L87 Difference]: Start difference. First operand 1008 states and 1667 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:00,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:20:00,507 INFO L93 Difference]: Finished difference Result 1712 states and 2802 transitions. [2021-11-22 15:20:00,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:20:00,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-22 15:20:00,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:20:00,515 INFO L225 Difference]: With dead ends: 1712 [2021-11-22 15:20:00,515 INFO L226 Difference]: Without dead ends: 1011 [2021-11-22 15:20:00,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:20:00,518 INFO L933 BasicCegarLoop]: 1665 mSDtfsCounter, 1 mSDsluCounter, 1663 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3328 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:20:00,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 3328 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:20:00,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2021-11-22 15:20:00,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 1010. [2021-11-22 15:20:00,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1010 states, 998 states have (on average 1.6723446893787575) internal successors, (1669), 1009 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:00,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1010 states to 1010 states and 1669 transitions. [2021-11-22 15:20:00,585 INFO L78 Accepts]: Start accepts. Automaton has 1010 states and 1669 transitions. Word has length 63 [2021-11-22 15:20:00,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:20:00,588 INFO L470 AbstractCegarLoop]: Abstraction has 1010 states and 1669 transitions. [2021-11-22 15:20:00,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:00,588 INFO L276 IsEmpty]: Start isEmpty. Operand 1010 states and 1669 transitions. [2021-11-22 15:20:00,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-22 15:20:00,589 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:20:00,589 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:20:00,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 15:20:00,590 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-22 15:20:00,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:20:00,590 INFO L85 PathProgramCache]: Analyzing trace with hash -858030371, now seen corresponding path program 1 times [2021-11-22 15:20:00,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:20:00,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750550086] [2021-11-22 15:20:00,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:20:00,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:20:00,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:20:00,654 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:20:00,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:20:00,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750550086] [2021-11-22 15:20:00,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750550086] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:20:00,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:20:00,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:20:00,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491127417] [2021-11-22 15:20:00,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:20:00,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:20:00,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:20:00,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:20:00,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:20:00,657 INFO L87 Difference]: Start difference. First operand 1010 states and 1669 transitions. 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 15:20:00,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:20:00,814 INFO L93 Difference]: Finished difference Result 2902 states and 4817 transitions. [2021-11-22 15:20:00,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:20:00,815 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 15:20:00,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:20:00,826 INFO L225 Difference]: With dead ends: 2902 [2021-11-22 15:20:00,827 INFO L226 Difference]: Without dead ends: 1930 [2021-11-22 15:20:00,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:20:00,830 INFO L933 BasicCegarLoop]: 1666 mSDtfsCounter, 1617 mSDsluCounter, 1568 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1617 SdHoareTripleChecker+Valid, 3234 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:20:00,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1617 Valid, 3234 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:20:00,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1930 states. [2021-11-22 15:20:00,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1930 to 1229. [2021-11-22 15:20:00,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 1217 states have (on average 1.695152013147083) internal successors, (2063), 1228 states have internal predecessors, (2063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:00,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 2063 transitions. [2021-11-22 15:20:00,924 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 2063 transitions. Word has length 72 [2021-11-22 15:20:00,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:20:00,925 INFO L470 AbstractCegarLoop]: Abstraction has 1229 states and 2063 transitions. [2021-11-22 15:20:00,925 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 15:20:00,925 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 2063 transitions. [2021-11-22 15:20:00,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-22 15:20:00,927 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:20:00,927 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] [2021-11-22 15:20:00,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-22 15:20:00,928 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-22 15:20:00,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:20:00,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1912923349, now seen corresponding path program 1 times [2021-11-22 15:20:00,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:20:00,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898876099] [2021-11-22 15:20:00,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:20:00,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:20:00,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:20:00,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:20:00,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:20:00,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898876099] [2021-11-22 15:20:00,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898876099] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:20:01,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:20:01,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:20:01,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508941574] [2021-11-22 15:20:01,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:20:01,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:20:01,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:20:01,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:20:01,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:20:01,002 INFO L87 Difference]: Start difference. First operand 1229 states and 2063 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:01,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:20:01,275 INFO L93 Difference]: Finished difference Result 3601 states and 6079 transitions. [2021-11-22 15:20:01,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:20:01,276 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2021-11-22 15:20:01,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:20:01,291 INFO L225 Difference]: With dead ends: 3601 [2021-11-22 15:20:01,291 INFO L226 Difference]: Without dead ends: 2410 [2021-11-22 15:20:01,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:20:01,294 INFO L933 BasicCegarLoop]: 3253 mSDtfsCounter, 3269 mSDsluCounter, 4879 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3269 SdHoareTripleChecker+Valid, 8132 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:20:01,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3269 Valid, 8132 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:20:01,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2410 states. [2021-11-22 15:20:01,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2410 to 1229. [2021-11-22 15:20:01,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 1217 states have (on average 1.6935086277732128) internal successors, (2061), 1228 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:01,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 2061 transitions. [2021-11-22 15:20:01,410 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 2061 transitions. Word has length 73 [2021-11-22 15:20:01,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:20:01,410 INFO L470 AbstractCegarLoop]: Abstraction has 1229 states and 2061 transitions. [2021-11-22 15:20:01,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:01,411 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 2061 transitions. [2021-11-22 15:20:01,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-22 15:20:01,412 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:20:01,413 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] [2021-11-22 15:20:01,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-22 15:20:01,413 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-22 15:20:01,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:20:01,414 INFO L85 PathProgramCache]: Analyzing trace with hash 787706226, now seen corresponding path program 1 times [2021-11-22 15:20:01,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:20:01,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380263209] [2021-11-22 15:20:01,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:20:01,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:20:01,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:20:01,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:20:01,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:20:01,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380263209] [2021-11-22 15:20:01,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380263209] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:20:01,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:20:01,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:20:01,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214619190] [2021-11-22 15:20:01,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:20:01,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:20:01,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:20:01,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:20:01,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:20:01,460 INFO L87 Difference]: Start difference. First operand 1229 states and 2061 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 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 15:20:01,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:20:01,628 INFO L93 Difference]: Finished difference Result 3599 states and 6071 transitions. [2021-11-22 15:20:01,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:20:01,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 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 15:20:01,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:20:01,643 INFO L225 Difference]: With dead ends: 3599 [2021-11-22 15:20:01,643 INFO L226 Difference]: Without dead ends: 2408 [2021-11-22 15:20:01,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:20:01,646 INFO L933 BasicCegarLoop]: 2797 mSDtfsCounter, 1614 mSDsluCounter, 1654 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1614 SdHoareTripleChecker+Valid, 4451 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:20:01,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1614 Valid, 4451 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:20:01,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2408 states. [2021-11-22 15:20:01,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2408 to 1707. [2021-11-22 15:20:01,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1707 states, 1695 states have (on average 1.7250737463126844) internal successors, (2924), 1706 states have internal predecessors, (2924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:01,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 2924 transitions. [2021-11-22 15:20:01,796 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 2924 transitions. Word has length 74 [2021-11-22 15:20:01,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:20:01,796 INFO L470 AbstractCegarLoop]: Abstraction has 1707 states and 2924 transitions. [2021-11-22 15:20:01,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 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 15:20:01,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 2924 transitions. [2021-11-22 15:20:01,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-22 15:20:01,799 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:20:01,799 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] [2021-11-22 15:20:01,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-22 15:20:01,799 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-22 15:20:01,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:20:01,800 INFO L85 PathProgramCache]: Analyzing trace with hash -714069231, now seen corresponding path program 1 times [2021-11-22 15:20:01,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:20:01,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542738208] [2021-11-22 15:20:01,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:20:01,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:20:01,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:20:01,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:20:01,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:20:01,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542738208] [2021-11-22 15:20:01,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542738208] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:20:01,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104592433] [2021-11-22 15:20:01,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:20:01,871 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:20:01,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9952b2bb-161c-4a6f-9a4c-04b20f215851/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:20:01,874 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9952b2bb-161c-4a6f-9a4c-04b20f215851/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:20:01,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9952b2bb-161c-4a6f-9a4c-04b20f215851/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 15:20:02,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:20:02,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 898 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 15:20:02,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:20:02,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:20:02,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:20:02,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:20:02,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104592433] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:20:02,481 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:20:02,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-22 15:20:02,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313281274] [2021-11-22 15:20:02,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:20:02,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 15:20:02,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:20:02,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 15:20:02,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:20:02,484 INFO L87 Difference]: Start difference. First operand 1707 states and 2924 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 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 15:20:02,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:20:02,971 INFO L93 Difference]: Finished difference Result 6511 states and 11052 transitions. [2021-11-22 15:20:02,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:20:02,971 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 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 74 [2021-11-22 15:20:02,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:20:03,017 INFO L225 Difference]: With dead ends: 6511 [2021-11-22 15:20:03,017 INFO L226 Difference]: Without dead ends: 5810 [2021-11-22 15:20:03,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:20:03,021 INFO L933 BasicCegarLoop]: 1664 mSDtfsCounter, 6454 mSDsluCounter, 8174 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6454 SdHoareTripleChecker+Valid, 9838 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:20:03,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6454 Valid, 9838 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:20:03,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5810 states. [2021-11-22 15:20:03,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5810 to 3707. [2021-11-22 15:20:03,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3707 states, 3695 states have (on average 1.7637347767253044) internal successors, (6517), 3706 states have internal predecessors, (6517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:03,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3707 states to 3707 states and 6517 transitions. [2021-11-22 15:20:03,286 INFO L78 Accepts]: Start accepts. Automaton has 3707 states and 6517 transitions. Word has length 74 [2021-11-22 15:20:03,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:20:03,286 INFO L470 AbstractCegarLoop]: Abstraction has 3707 states and 6517 transitions. [2021-11-22 15:20:03,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 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 15:20:03,287 INFO L276 IsEmpty]: Start isEmpty. Operand 3707 states and 6517 transitions. [2021-11-22 15:20:03,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-22 15:20:03,308 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:20:03,309 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 15:20:03,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9952b2bb-161c-4a6f-9a4c-04b20f215851/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-22 15:20:03,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9952b2bb-161c-4a6f-9a4c-04b20f215851/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-22 15:20:03,535 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-22 15:20:03,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:20:03,535 INFO L85 PathProgramCache]: Analyzing trace with hash 340918847, now seen corresponding path program 1 times [2021-11-22 15:20:03,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:20:03,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203694833] [2021-11-22 15:20:03,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:20:03,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:20:03,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:20:03,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:20:03,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:20:03,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203694833] [2021-11-22 15:20:03,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203694833] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:20:03,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:20:03,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:20:03,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604053717] [2021-11-22 15:20:03,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:20:03,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:20:03,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:20:03,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:20:03,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:20:03,586 INFO L87 Difference]: Start difference. First operand 3707 states and 6517 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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 15:20:03,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:20:03,920 INFO L93 Difference]: Finished difference Result 9869 states and 17357 transitions. [2021-11-22 15:20:03,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:20:03,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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 15:20:03,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:20:03,950 INFO L225 Difference]: With dead ends: 9869 [2021-11-22 15:20:03,951 INFO L226 Difference]: Without dead ends: 6362 [2021-11-22 15:20:03,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:20:03,958 INFO L933 BasicCegarLoop]: 1666 mSDtfsCounter, 1612 mSDsluCounter, 1653 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1612 SdHoareTripleChecker+Valid, 3319 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:20:03,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1612 Valid, 3319 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:20:03,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6362 states. [2021-11-22 15:20:04,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6362 to 5661. [2021-11-22 15:20:04,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5661 states, 5649 states have (on average 1.7744733581164809) internal successors, (10024), 5660 states have internal predecessors, (10024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:04,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5661 states to 5661 states and 10024 transitions. [2021-11-22 15:20:04,360 INFO L78 Accepts]: Start accepts. Automaton has 5661 states and 10024 transitions. Word has length 77 [2021-11-22 15:20:04,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:20:04,360 INFO L470 AbstractCegarLoop]: Abstraction has 5661 states and 10024 transitions. [2021-11-22 15:20:04,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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 15:20:04,360 INFO L276 IsEmpty]: Start isEmpty. Operand 5661 states and 10024 transitions. [2021-11-22 15:20:04,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-22 15:20:04,368 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:20:04,368 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:20:04,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-22 15:20:04,368 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-22 15:20:04,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:20:04,369 INFO L85 PathProgramCache]: Analyzing trace with hash -179795727, now seen corresponding path program 1 times [2021-11-22 15:20:04,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:20:04,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514400379] [2021-11-22 15:20:04,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:20:04,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:20:04,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:20:04,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:20:04,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:20:04,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514400379] [2021-11-22 15:20:04,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514400379] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:20:04,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:20:04,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:20:04,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627393231] [2021-11-22 15:20:04,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:20:04,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:20:04,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:20:04,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:20:04,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:20:04,414 INFO L87 Difference]: Start difference. First operand 5661 states and 10024 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:04,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:20:04,876 INFO L93 Difference]: Finished difference Result 14257 states and 25227 transitions. [2021-11-22 15:20:04,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:20:04,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-22 15:20:04,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:20:04,903 INFO L225 Difference]: With dead ends: 14257 [2021-11-22 15:20:04,903 INFO L226 Difference]: Without dead ends: 9163 [2021-11-22 15:20:04,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:20:04,913 INFO L933 BasicCegarLoop]: 1665 mSDtfsCounter, 1610 mSDsluCounter, 1605 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1610 SdHoareTripleChecker+Valid, 3270 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:20:04,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1610 Valid, 3270 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:20:04,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9163 states. [2021-11-22 15:20:05,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9163 to 8462. [2021-11-22 15:20:05,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8462 states, 8450 states have (on average 1.778698224852071) internal successors, (15030), 8461 states have internal predecessors, (15030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:05,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8462 states to 8462 states and 15030 transitions. [2021-11-22 15:20:05,506 INFO L78 Accepts]: Start accepts. Automaton has 8462 states and 15030 transitions. Word has length 78 [2021-11-22 15:20:05,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:20:05,506 INFO L470 AbstractCegarLoop]: Abstraction has 8462 states and 15030 transitions. [2021-11-22 15:20:05,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:05,507 INFO L276 IsEmpty]: Start isEmpty. Operand 8462 states and 15030 transitions. [2021-11-22 15:20:05,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-22 15:20:05,516 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:20:05,516 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:20:05,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-22 15:20:05,517 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-22 15:20:05,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:20:05,517 INFO L85 PathProgramCache]: Analyzing trace with hash 360193485, now seen corresponding path program 1 times [2021-11-22 15:20:05,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:20:05,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521272615] [2021-11-22 15:20:05,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:20:05,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:20:05,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:20:05,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:20:05,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:20:05,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521272615] [2021-11-22 15:20:05,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521272615] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:20:05,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:20:05,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:20:05,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304646360] [2021-11-22 15:20:05,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:20:05,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:20:05,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:20:05,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:20:05,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:20:05,560 INFO L87 Difference]: Start difference. First operand 8462 states and 15030 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:06,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:20:06,217 INFO L93 Difference]: Finished difference Result 20885 states and 37085 transitions. [2021-11-22 15:20:06,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:20:06,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-22 15:20:06,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:20:06,256 INFO L225 Difference]: With dead ends: 20885 [2021-11-22 15:20:06,256 INFO L226 Difference]: Without dead ends: 13579 [2021-11-22 15:20:06,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:20:06,271 INFO L933 BasicCegarLoop]: 1665 mSDtfsCounter, 1608 mSDsluCounter, 1605 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1608 SdHoareTripleChecker+Valid, 3270 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:20:06,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1608 Valid, 3270 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:20:06,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13579 states. [2021-11-22 15:20:07,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13579 to 12878. [2021-11-22 15:20:07,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12878 states, 12866 states have (on average 1.7805067620083943) internal successors, (22908), 12877 states have internal predecessors, (22908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:07,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12878 states to 12878 states and 22908 transitions. [2021-11-22 15:20:07,083 INFO L78 Accepts]: Start accepts. Automaton has 12878 states and 22908 transitions. Word has length 79 [2021-11-22 15:20:07,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:20:07,084 INFO L470 AbstractCegarLoop]: Abstraction has 12878 states and 22908 transitions. [2021-11-22 15:20:07,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:07,084 INFO L276 IsEmpty]: Start isEmpty. Operand 12878 states and 22908 transitions. [2021-11-22 15:20:07,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-22 15:20:07,094 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:20:07,094 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:20:07,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-22 15:20:07,095 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-22 15:20:07,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:20:07,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1411034977, now seen corresponding path program 1 times [2021-11-22 15:20:07,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:20:07,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919737143] [2021-11-22 15:20:07,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:20:07,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:20:07,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:20:07,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:20:07,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:20:07,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919737143] [2021-11-22 15:20:07,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919737143] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:20:07,137 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:20:07,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:20:07,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572062784] [2021-11-22 15:20:07,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:20:07,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:20:07,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:20:07,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:20:07,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:20:07,139 INFO L87 Difference]: Start difference. First operand 12878 states and 22908 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:08,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:20:08,138 INFO L93 Difference]: Finished difference Result 32944 states and 58704 transitions. [2021-11-22 15:20:08,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:20:08,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-22 15:20:08,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:20:08,212 INFO L225 Difference]: With dead ends: 32944 [2021-11-22 15:20:08,212 INFO L226 Difference]: Without dead ends: 21770 [2021-11-22 15:20:08,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:20:08,232 INFO L933 BasicCegarLoop]: 1665 mSDtfsCounter, 1606 mSDsluCounter, 1653 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1606 SdHoareTripleChecker+Valid, 3318 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:20:08,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1606 Valid, 3318 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:20:08,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21770 states. [2021-11-22 15:20:09,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21770 to 21069. [2021-11-22 15:20:09,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21069 states, 21057 states have (on average 1.7837773661965142) internal successors, (37561), 21068 states have internal predecessors, (37561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:09,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21069 states to 21069 states and 37561 transitions. [2021-11-22 15:20:09,571 INFO L78 Accepts]: Start accepts. Automaton has 21069 states and 37561 transitions. Word has length 80 [2021-11-22 15:20:09,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:20:09,572 INFO L470 AbstractCegarLoop]: Abstraction has 21069 states and 37561 transitions. [2021-11-22 15:20:09,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:09,572 INFO L276 IsEmpty]: Start isEmpty. Operand 21069 states and 37561 transitions. [2021-11-22 15:20:09,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-22 15:20:09,585 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:20:09,585 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:20:09,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-22 15:20:09,586 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-22 15:20:09,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:20:09,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1571444899, now seen corresponding path program 1 times [2021-11-22 15:20:09,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:20:09,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367560538] [2021-11-22 15:20:09,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:20:09,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:20:09,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:20:09,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:20:09,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:20:09,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367560538] [2021-11-22 15:20:09,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367560538] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:20:09,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:20:09,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:20:09,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476305582] [2021-11-22 15:20:09,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:20:09,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:20:09,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:20:09,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:20:09,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:20:09,651 INFO L87 Difference]: Start difference. First operand 21069 states and 37561 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:10,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:20:10,737 INFO L93 Difference]: Finished difference Result 54875 states and 98129 transitions. [2021-11-22 15:20:10,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:20:10,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-22 15:20:10,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:20:10,843 INFO L225 Difference]: With dead ends: 54875 [2021-11-22 15:20:10,844 INFO L226 Difference]: Without dead ends: 36400 [2021-11-22 15:20:10,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:20:10,867 INFO L933 BasicCegarLoop]: 1665 mSDtfsCounter, 1604 mSDsluCounter, 1652 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1604 SdHoareTripleChecker+Valid, 3317 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:20:10,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1604 Valid, 3317 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:20:10,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36400 states. [2021-11-22 15:20:12,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36400 to 35699. [2021-11-22 15:20:12,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35699 states, 35687 states have (on average 1.7878779387452013) internal successors, (63804), 35698 states have internal predecessors, (63804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:12,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35699 states to 35699 states and 63804 transitions. [2021-11-22 15:20:12,484 INFO L78 Accepts]: Start accepts. Automaton has 35699 states and 63804 transitions. Word has length 81 [2021-11-22 15:20:12,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:20:12,485 INFO L470 AbstractCegarLoop]: Abstraction has 35699 states and 63804 transitions. [2021-11-22 15:20:12,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:12,485 INFO L276 IsEmpty]: Start isEmpty. Operand 35699 states and 63804 transitions. [2021-11-22 15:20:12,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-22 15:20:12,507 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:20:12,508 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:20:12,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-22 15:20:12,508 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-22 15:20:12,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:20:12,509 INFO L85 PathProgramCache]: Analyzing trace with hash 990190675, now seen corresponding path program 1 times [2021-11-22 15:20:12,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:20:12,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399199361] [2021-11-22 15:20:12,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:20:12,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:20:12,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:20:12,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:20:12,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:20:12,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399199361] [2021-11-22 15:20:12,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399199361] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:20:12,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:20:12,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:20:12,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486917687] [2021-11-22 15:20:12,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:20:12,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:20:12,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:20:12,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:20:12,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:20:12,561 INFO L87 Difference]: Start difference. First operand 35699 states and 63804 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:14,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:20:14,659 INFO L93 Difference]: Finished difference Result 89122 states and 158868 transitions. [2021-11-22 15:20:14,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:20:14,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-22 15:20:14,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:20:14,764 INFO L225 Difference]: With dead ends: 89122 [2021-11-22 15:20:14,765 INFO L226 Difference]: Without dead ends: 58255 [2021-11-22 15:20:14,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:20:14,806 INFO L933 BasicCegarLoop]: 1665 mSDtfsCounter, 1602 mSDsluCounter, 1578 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1602 SdHoareTripleChecker+Valid, 3243 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:20:14,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1602 Valid, 3243 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:20:14,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58255 states. [2021-11-22 15:20:17,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58255 to 57554. [2021-11-22 15:20:17,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57554 states, 57542 states have (on average 1.7776233012408327) internal successors, (102288), 57553 states have internal predecessors, (102288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:17,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57554 states to 57554 states and 102288 transitions. [2021-11-22 15:20:17,486 INFO L78 Accepts]: Start accepts. Automaton has 57554 states and 102288 transitions. Word has length 82 [2021-11-22 15:20:17,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:20:17,486 INFO L470 AbstractCegarLoop]: Abstraction has 57554 states and 102288 transitions. [2021-11-22 15:20:17,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:17,486 INFO L276 IsEmpty]: Start isEmpty. Operand 57554 states and 102288 transitions. [2021-11-22 15:20:17,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-22 15:20:17,501 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:20:17,502 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:20:17,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-22 15:20:17,502 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-22 15:20:17,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:20:17,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1882903337, now seen corresponding path program 1 times [2021-11-22 15:20:17,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:20:17,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192143511] [2021-11-22 15:20:17,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:20:17,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:20:17,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:20:17,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:20:17,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:20:17,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192143511] [2021-11-22 15:20:17,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192143511] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:20:17,546 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:20:17,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:20:17,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010269344] [2021-11-22 15:20:17,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:20:17,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:20:17,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:20:17,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:20:17,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:20:17,548 INFO L87 Difference]: Start difference. First operand 57554 states and 102288 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:20,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:20:20,997 INFO L93 Difference]: Finished difference Result 148293 states and 263493 transitions. [2021-11-22 15:20:20,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:20:20,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-22 15:20:20,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:20:21,161 INFO L225 Difference]: With dead ends: 148293 [2021-11-22 15:20:21,161 INFO L226 Difference]: Without dead ends: 97909 [2021-11-22 15:20:21,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:20:21,203 INFO L933 BasicCegarLoop]: 1665 mSDtfsCounter, 1600 mSDsluCounter, 1605 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1600 SdHoareTripleChecker+Valid, 3270 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:20:21,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1600 Valid, 3270 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:20:21,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97909 states. [2021-11-22 15:20:24,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97909 to 97208. [2021-11-22 15:20:25,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97208 states, 97196 states have (on average 1.7736532367587143) internal successors, (172392), 97207 states have internal predecessors, (172392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:25,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97208 states to 97208 states and 172392 transitions. [2021-11-22 15:20:25,205 INFO L78 Accepts]: Start accepts. Automaton has 97208 states and 172392 transitions. Word has length 83 [2021-11-22 15:20:25,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:20:25,205 INFO L470 AbstractCegarLoop]: Abstraction has 97208 states and 172392 transitions. [2021-11-22 15:20:25,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:25,206 INFO L276 IsEmpty]: Start isEmpty. Operand 97208 states and 172392 transitions. [2021-11-22 15:20:25,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-22 15:20:25,221 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:20:25,221 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:20:25,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-22 15:20:25,221 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-22 15:20:25,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:20:25,222 INFO L85 PathProgramCache]: Analyzing trace with hash -546543541, now seen corresponding path program 1 times [2021-11-22 15:20:25,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:20:25,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565954996] [2021-11-22 15:20:25,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:20:25,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:20:25,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:20:25,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:20:25,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:20:25,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565954996] [2021-11-22 15:20:25,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565954996] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:20:25,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:20:25,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:20:25,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427417020] [2021-11-22 15:20:25,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:20:25,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:20:25,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:20:25,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:20:25,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:20:25,559 INFO L87 Difference]: Start difference. First operand 97208 states and 172392 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:31,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:20:31,334 INFO L93 Difference]: Finished difference Result 268065 states and 476545 transitions. [2021-11-22 15:20:31,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:20:31,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-22 15:20:31,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:20:31,716 INFO L225 Difference]: With dead ends: 268065 [2021-11-22 15:20:31,716 INFO L226 Difference]: Without dead ends: 180047 [2021-11-22 15:20:31,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:20:31,795 INFO L933 BasicCegarLoop]: 1665 mSDtfsCounter, 1598 mSDsluCounter, 1652 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1598 SdHoareTripleChecker+Valid, 3317 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:20:31,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1598 Valid, 3317 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:20:31,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180047 states.