./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_product35.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a358fb84-0e0f-4a56-af0d-886034a3b3f2/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a358fb84-0e0f-4a56-af0d-886034a3b3f2/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a358fb84-0e0f-4a56-af0d-886034a3b3f2/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a358fb84-0e0f-4a56-af0d-886034a3b3f2/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_product35.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a358fb84-0e0f-4a56-af0d-886034a3b3f2/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a358fb84-0e0f-4a56-af0d-886034a3b3f2/bin/uautomizer-AkOaLMaTGY --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 97d4c6be733483d74e70aacf7c001bc7f4ca03733e33a8c0b4370e9380a7e003 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 08:14:44,691 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 08:14:44,694 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 08:14:44,741 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 08:14:44,741 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 08:14:44,747 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 08:14:44,750 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 08:14:44,755 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 08:14:44,758 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 08:14:44,765 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 08:14:44,767 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 08:14:44,768 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 08:14:44,769 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 08:14:44,772 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 08:14:44,774 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 08:14:44,776 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 08:14:44,778 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 08:14:44,779 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 08:14:44,785 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 08:14:44,795 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 08:14:44,797 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 08:14:44,799 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 08:14:44,802 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 08:14:44,803 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 08:14:44,807 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 08:14:44,807 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 08:14:44,808 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 08:14:44,810 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 08:14:44,810 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 08:14:44,812 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 08:14:44,812 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 08:14:44,813 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 08:14:44,815 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 08:14:44,817 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 08:14:44,819 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 08:14:44,819 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 08:14:44,820 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 08:14:44,820 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 08:14:44,821 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 08:14:44,822 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 08:14:44,822 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 08:14:44,823 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a358fb84-0e0f-4a56-af0d-886034a3b3f2/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-07 08:14:44,870 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 08:14:44,870 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 08:14:44,871 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 08:14:44,871 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 08:14:44,873 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 08:14:44,873 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 08:14:44,873 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 08:14:44,874 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 08:14:44,874 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 08:14:44,874 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 08:14:44,875 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 08:14:44,876 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 08:14:44,876 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 08:14:44,876 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 08:14:44,876 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 08:14:44,876 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 08:14:44,877 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 08:14:44,877 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 08:14:44,877 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 08:14:44,877 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 08:14:44,877 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 08:14:44,878 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 08:14:44,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:14:44,878 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 08:14:44,878 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 08:14:44,879 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 08:14:44,879 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 08:14:44,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 08:14:44,879 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 08:14:44,881 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 08:14:44,881 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 08:14:44,881 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 08:14:44,882 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_a358fb84-0e0f-4a56-af0d-886034a3b3f2/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a358fb84-0e0f-4a56-af0d-886034a3b3f2/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97d4c6be733483d74e70aacf7c001bc7f4ca03733e33a8c0b4370e9380a7e003 [2021-11-07 08:14:45,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 08:14:45,229 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 08:14:45,231 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 08:14:45,232 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 08:14:45,233 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 08:14:45,234 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a358fb84-0e0f-4a56-af0d-886034a3b3f2/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/product-lines/email_spec11_product35.cil.c [2021-11-07 08:14:45,301 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a358fb84-0e0f-4a56-af0d-886034a3b3f2/bin/uautomizer-AkOaLMaTGY/data/eeb8d61eb/29b553c19c2a4114b6b57008e6f0b1db/FLAG15b424d34 [2021-11-07 08:14:46,018 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 08:14:46,018 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a358fb84-0e0f-4a56-af0d-886034a3b3f2/sv-benchmarks/c/product-lines/email_spec11_product35.cil.c [2021-11-07 08:14:46,038 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a358fb84-0e0f-4a56-af0d-886034a3b3f2/bin/uautomizer-AkOaLMaTGY/data/eeb8d61eb/29b553c19c2a4114b6b57008e6f0b1db/FLAG15b424d34 [2021-11-07 08:14:46,167 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a358fb84-0e0f-4a56-af0d-886034a3b3f2/bin/uautomizer-AkOaLMaTGY/data/eeb8d61eb/29b553c19c2a4114b6b57008e6f0b1db [2021-11-07 08:14:46,170 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 08:14:46,171 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 08:14:46,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 08:14:46,180 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 08:14:46,182 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 08:14:46,183 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:14:46" (1/1) ... [2021-11-07 08:14:46,185 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ae00d8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:14:46, skipping insertion in model container [2021-11-07 08:14:46,185 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:14:46" (1/1) ... [2021-11-07 08:14:46,190 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 08:14:46,274 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:14:46,943 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a358fb84-0e0f-4a56-af0d-886034a3b3f2/sv-benchmarks/c/product-lines/email_spec11_product35.cil.c[61136,61149] [2021-11-07 08:14:46,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:14:46,984 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 08:14:47,116 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a358fb84-0e0f-4a56-af0d-886034a3b3f2/sv-benchmarks/c/product-lines/email_spec11_product35.cil.c[61136,61149] [2021-11-07 08:14:47,130 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:14:47,170 INFO L208 MainTranslator]: Completed translation [2021-11-07 08:14:47,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:14:47 WrapperNode [2021-11-07 08:14:47,170 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 08:14:47,171 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 08:14:47,172 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 08:14:47,172 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 08:14:47,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:14:47" (1/1) ... [2021-11-07 08:14:47,226 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:14:47" (1/1) ... [2021-11-07 08:14:47,417 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 08:14:47,418 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 08:14:47,419 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 08:14:47,419 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 08:14:47,484 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:14:47" (1/1) ... [2021-11-07 08:14:47,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:14:47" (1/1) ... [2021-11-07 08:14:47,502 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:14:47" (1/1) ... [2021-11-07 08:14:47,513 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:14:47" (1/1) ... [2021-11-07 08:14:47,612 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:14:47" (1/1) ... [2021-11-07 08:14:47,656 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:14:47" (1/1) ... [2021-11-07 08:14:47,667 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:14:47" (1/1) ... [2021-11-07 08:14:47,701 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 08:14:47,703 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 08:14:47,703 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 08:14:47,704 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 08:14:47,705 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:14:47" (1/1) ... [2021-11-07 08:14:47,713 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:14:47,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a358fb84-0e0f-4a56-af0d-886034a3b3f2/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:14:47,740 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a358fb84-0e0f-4a56-af0d-886034a3b3f2/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 08:14:47,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a358fb84-0e0f-4a56-af0d-886034a3b3f2/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 08:14:47,794 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-07 08:14:47,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 08:14:47,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 08:14:47,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 08:14:47,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 08:14:51,611 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 08:14:51,611 INFO L299 CfgBuilder]: Removed 937 assume(true) statements. [2021-11-07 08:14:51,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:14:51 BoogieIcfgContainer [2021-11-07 08:14:51,615 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 08:14:51,617 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 08:14:51,617 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 08:14:51,620 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 08:14:51,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:14:46" (1/3) ... [2021-11-07 08:14:51,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d0af72d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:14:51, skipping insertion in model container [2021-11-07 08:14:51,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:14:47" (2/3) ... [2021-11-07 08:14:51,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d0af72d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:14:51, skipping insertion in model container [2021-11-07 08:14:51,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:14:51" (3/3) ... [2021-11-07 08:14:51,623 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec11_product35.cil.c [2021-11-07 08:14:51,628 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 08:14:51,629 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-07 08:14:51,681 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 08:14:51,687 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 [2021-11-07 08:14:51,687 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-07 08:14:51,731 INFO L276 IsEmpty]: Start isEmpty. Operand has 1330 states, 1323 states have (on average 1.7165532879818595) internal successors, (2271), 1329 states have internal predecessors, (2271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:14:51,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-07 08:14:51,751 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:14:51,752 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:14:51,752 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:14:51,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:14:51,758 INFO L85 PathProgramCache]: Analyzing trace with hash 859785730, now seen corresponding path program 1 times [2021-11-07 08:14:51,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:14:51,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631391961] [2021-11-07 08:14:51,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:14:51,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:14:52,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:14:52,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:14:52,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:14:52,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631391961] [2021-11-07 08:14:52,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631391961] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:14:52,240 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:14:52,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:14:52,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728031621] [2021-11-07 08:14:52,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:14:52,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:14:52,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:14:52,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:14:52,278 INFO L87 Difference]: Start difference. First operand has 1330 states, 1323 states have (on average 1.7165532879818595) internal successors, (2271), 1329 states have internal predecessors, (2271), 0 states have call successors, (0), 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 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:14:52,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:14:52,562 INFO L93 Difference]: Finished difference Result 3955 states and 6755 transitions. [2021-11-07 08:14:52,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:14:52,564 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-07 08:14:52,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:14:52,605 INFO L225 Difference]: With dead ends: 3955 [2021-11-07 08:14:52,605 INFO L226 Difference]: Without dead ends: 2432 [2021-11-07 08:14:52,617 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:14:52,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2432 states. [2021-11-07 08:14:52,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2432 to 1225. [2021-11-07 08:14:52,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1225 states, 1219 states have (on average 1.716160787530763) internal successors, (2092), 1224 states have internal predecessors, (2092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:14:52,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 2092 transitions. [2021-11-07 08:14:52,739 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 2092 transitions. Word has length 65 [2021-11-07 08:14:52,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:14:52,740 INFO L470 AbstractCegarLoop]: Abstraction has 1225 states and 2092 transitions. [2021-11-07 08:14:52,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:14:52,740 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 2092 transitions. [2021-11-07 08:14:52,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 08:14:52,744 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:14:52,745 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:14:52,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 08:14:52,745 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:14:52,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:14:52,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1960805871, now seen corresponding path program 1 times [2021-11-07 08:14:52,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:14:52,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223212543] [2021-11-07 08:14:52,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:14:52,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:14:52,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:14:52,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:14:52,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:14:52,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223212543] [2021-11-07 08:14:52,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223212543] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:14:52,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:14:52,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 08:14:52,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883469170] [2021-11-07 08:14:52,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:14:52,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:14:52,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:14:52,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:14:52,867 INFO L87 Difference]: Start difference. First operand 1225 states and 2092 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:14:53,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:14:53,144 INFO L93 Difference]: Finished difference Result 3624 states and 6192 transitions. [2021-11-07 08:14:53,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 08:14:53,144 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-07 08:14:53,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:14:53,165 INFO L225 Difference]: With dead ends: 3624 [2021-11-07 08:14:53,166 INFO L226 Difference]: Without dead ends: 2418 [2021-11-07 08:14:53,169 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 08:14:53,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2418 states. [2021-11-07 08:14:53,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2418 to 1225. [2021-11-07 08:14:53,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1225 states, 1219 states have (on average 1.7153404429860541) internal successors, (2091), 1224 states have internal predecessors, (2091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:14:53,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 2091 transitions. [2021-11-07 08:14:53,288 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 2091 transitions. Word has length 67 [2021-11-07 08:14:53,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:14:53,289 INFO L470 AbstractCegarLoop]: Abstraction has 1225 states and 2091 transitions. [2021-11-07 08:14:53,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:14:53,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 2091 transitions. [2021-11-07 08:14:53,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-07 08:14:53,294 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:14:53,294 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:14:53,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 08:14:53,296 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:14:53,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:14:53,298 INFO L85 PathProgramCache]: Analyzing trace with hash 122726308, now seen corresponding path program 1 times [2021-11-07 08:14:53,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:14:53,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464970386] [2021-11-07 08:14:53,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:14:53,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:14:53,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:14:53,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:14:53,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:14:53,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464970386] [2021-11-07 08:14:53,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464970386] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:14:53,458 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:14:53,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:14:53,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659974276] [2021-11-07 08:14:53,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:14:53,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:14:53,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:14:53,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:14:53,463 INFO L87 Difference]: Start difference. First operand 1225 states and 2091 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:14:53,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:14:53,550 INFO L93 Difference]: Finished difference Result 2432 states and 4156 transitions. [2021-11-07 08:14:53,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:14:53,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-07 08:14:53,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:14:53,559 INFO L225 Difference]: With dead ends: 2432 [2021-11-07 08:14:53,560 INFO L226 Difference]: Without dead ends: 1230 [2021-11-07 08:14:53,563 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:14:53,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2021-11-07 08:14:53,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1225. [2021-11-07 08:14:53,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1225 states, 1219 states have (on average 1.7128794093519277) internal successors, (2088), 1224 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:14:53,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 2088 transitions. [2021-11-07 08:14:53,628 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 2088 transitions. Word has length 68 [2021-11-07 08:14:53,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:14:53,628 INFO L470 AbstractCegarLoop]: Abstraction has 1225 states and 2088 transitions. [2021-11-07 08:14:53,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:14:53,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 2088 transitions. [2021-11-07 08:14:53,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-07 08:14:53,632 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:14:53,632 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:14:53,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 08:14:53,633 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:14:53,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:14:53,634 INFO L85 PathProgramCache]: Analyzing trace with hash 543510121, now seen corresponding path program 1 times [2021-11-07 08:14:53,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:14:53,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234949212] [2021-11-07 08:14:53,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:14:53,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:14:53,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:14:53,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:14:53,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:14:53,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234949212] [2021-11-07 08:14:53,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234949212] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:14:53,777 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:14:53,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 08:14:53,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680603188] [2021-11-07 08:14:53,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:14:53,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:14:53,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:14:53,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:14:53,780 INFO L87 Difference]: Start difference. First operand 1225 states and 2088 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:14:54,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:14:54,088 INFO L93 Difference]: Finished difference Result 3614 states and 6172 transitions. [2021-11-07 08:14:54,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:14:54,091 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-07 08:14:54,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:14:54,108 INFO L225 Difference]: With dead ends: 3614 [2021-11-07 08:14:54,109 INFO L226 Difference]: Without dead ends: 2416 [2021-11-07 08:14:54,111 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 08:14:54,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2416 states. [2021-11-07 08:14:54,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2416 to 1225. [2021-11-07 08:14:54,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1225 states, 1219 states have (on average 1.712059064807219) internal successors, (2087), 1224 states have internal predecessors, (2087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:14:54,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 2087 transitions. [2021-11-07 08:14:54,187 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 2087 transitions. Word has length 70 [2021-11-07 08:14:54,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:14:54,188 INFO L470 AbstractCegarLoop]: Abstraction has 1225 states and 2087 transitions. [2021-11-07 08:14:54,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:14:54,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 2087 transitions. [2021-11-07 08:14:54,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 08:14:54,190 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:14:54,191 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:14:54,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 08:14:54,191 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:14:54,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:14:54,193 INFO L85 PathProgramCache]: Analyzing trace with hash 935956198, now seen corresponding path program 1 times [2021-11-07 08:14:54,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:14:54,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299622151] [2021-11-07 08:14:54,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:14:54,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:14:54,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:14:54,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:14:54,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:14:54,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299622151] [2021-11-07 08:14:54,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299622151] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:14:54,296 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:14:54,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 08:14:54,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809624222] [2021-11-07 08:14:54,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:14:54,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:14:54,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:14:54,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:14:54,298 INFO L87 Difference]: Start difference. First operand 1225 states and 2087 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:14:54,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:14:54,587 INFO L93 Difference]: Finished difference Result 3619 states and 6176 transitions. [2021-11-07 08:14:54,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:14:54,588 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-07 08:14:54,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:14:54,604 INFO L225 Difference]: With dead ends: 3619 [2021-11-07 08:14:54,604 INFO L226 Difference]: Without dead ends: 2421 [2021-11-07 08:14:54,607 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 08:14:54,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2421 states. [2021-11-07 08:14:54,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2421 to 1225. [2021-11-07 08:14:54,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1225 states, 1219 states have (on average 1.7112387202625103) internal successors, (2086), 1224 states have internal predecessors, (2086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:14:54,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 2086 transitions. [2021-11-07 08:14:54,692 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 2086 transitions. Word has length 71 [2021-11-07 08:14:54,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:14:54,692 INFO L470 AbstractCegarLoop]: Abstraction has 1225 states and 2086 transitions. [2021-11-07 08:14:54,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:14:54,692 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 2086 transitions. [2021-11-07 08:14:54,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-07 08:14:54,694 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:14:54,694 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:14:54,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 08:14:54,695 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:14:54,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:14:54,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1587868366, now seen corresponding path program 1 times [2021-11-07 08:14:54,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:14:54,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691066835] [2021-11-07 08:14:54,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:14:54,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:14:54,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:14:54,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:14:54,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:14:54,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691066835] [2021-11-07 08:14:54,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691066835] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:14:54,802 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:14:54,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:14:54,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299807874] [2021-11-07 08:14:54,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:14:54,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:14:54,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:14:54,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:14:54,804 INFO L87 Difference]: Start difference. First operand 1225 states and 2086 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) [2021-11-07 08:14:54,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:14:54,892 INFO L93 Difference]: Finished difference Result 2165 states and 3659 transitions. [2021-11-07 08:14:54,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:14:54,892 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 [2021-11-07 08:14:54,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:14:54,906 INFO L225 Difference]: With dead ends: 2165 [2021-11-07 08:14:54,907 INFO L226 Difference]: Without dead ends: 1228 [2021-11-07 08:14:54,909 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:14:54,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1228 states. [2021-11-07 08:14:54,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1228 to 1227. [2021-11-07 08:14:54,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1227 states, 1221 states have (on average 1.71007371007371) internal successors, (2088), 1226 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:14:55,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 2088 transitions. [2021-11-07 08:14:55,002 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 2088 transitions. Word has length 72 [2021-11-07 08:14:55,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:14:55,004 INFO L470 AbstractCegarLoop]: Abstraction has 1227 states and 2088 transitions. [2021-11-07 08:14:55,004 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) [2021-11-07 08:14:55,004 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 2088 transitions. [2021-11-07 08:14:55,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-07 08:14:55,011 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:14:55,011 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:14:55,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 08:14:55,011 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:14:55,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:14:55,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1198024288, now seen corresponding path program 1 times [2021-11-07 08:14:55,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:14:55,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986617893] [2021-11-07 08:14:55,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:14:55,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:14:55,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:14:55,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:14:55,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:14:55,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986617893] [2021-11-07 08:14:55,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986617893] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:14:55,105 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:14:55,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:14:55,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717249315] [2021-11-07 08:14:55,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:14:55,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:14:55,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:14:55,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:14:55,107 INFO L87 Difference]: Start difference. First operand 1227 states and 2088 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) [2021-11-07 08:14:55,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:14:55,248 INFO L93 Difference]: Finished difference Result 3567 states and 6088 transitions. [2021-11-07 08:14:55,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:14:55,249 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 [2021-11-07 08:14:55,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:14:55,266 INFO L225 Difference]: With dead ends: 3567 [2021-11-07 08:14:55,266 INFO L226 Difference]: Without dead ends: 2371 [2021-11-07 08:14:55,269 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:14:55,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2371 states. [2021-11-07 08:14:55,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2371 to 1434. [2021-11-07 08:14:55,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1434 states, 1428 states have (on average 1.7296918767507004) internal successors, (2470), 1433 states have internal predecessors, (2470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:14:55,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1434 states to 1434 states and 2470 transitions. [2021-11-07 08:14:55,366 INFO L78 Accepts]: Start accepts. Automaton has 1434 states and 2470 transitions. Word has length 80 [2021-11-07 08:14:55,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:14:55,367 INFO L470 AbstractCegarLoop]: Abstraction has 1434 states and 2470 transitions. [2021-11-07 08:14:55,367 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) [2021-11-07 08:14:55,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1434 states and 2470 transitions. [2021-11-07 08:14:55,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-07 08:14:55,370 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:14:55,370 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:14:55,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 08:14:55,370 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:14:55,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:14:55,371 INFO L85 PathProgramCache]: Analyzing trace with hash -159328351, now seen corresponding path program 1 times [2021-11-07 08:14:55,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:14:55,371 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691396913] [2021-11-07 08:14:55,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:14:55,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:14:55,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:14:55,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:14:55,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:14:55,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691396913] [2021-11-07 08:14:55,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691396913] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:14:55,480 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:14:55,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 08:14:55,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191648123] [2021-11-07 08:14:55,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:14:55,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:14:55,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:14:55,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:14:55,483 INFO L87 Difference]: Start difference. First operand 1434 states and 2470 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 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) [2021-11-07 08:14:56,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:14:56,012 INFO L93 Difference]: Finished difference Result 4232 states and 7316 transitions. [2021-11-07 08:14:56,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:14:56,013 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 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 [2021-11-07 08:14:56,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:14:56,032 INFO L225 Difference]: With dead ends: 4232 [2021-11-07 08:14:56,032 INFO L226 Difference]: Without dead ends: 2829 [2021-11-07 08:14:56,035 INFO L786 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 [2021-11-07 08:14:56,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2829 states. [2021-11-07 08:14:56,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2829 to 1434. [2021-11-07 08:14:56,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1434 states, 1428 states have (on average 1.7282913165266107) internal successors, (2468), 1433 states have internal predecessors, (2468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:14:56,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1434 states to 1434 states and 2468 transitions. [2021-11-07 08:14:56,152 INFO L78 Accepts]: Start accepts. Automaton has 1434 states and 2468 transitions. Word has length 81 [2021-11-07 08:14:56,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:14:56,152 INFO L470 AbstractCegarLoop]: Abstraction has 1434 states and 2468 transitions. [2021-11-07 08:14:56,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 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) [2021-11-07 08:14:56,153 INFO L276 IsEmpty]: Start isEmpty. Operand 1434 states and 2468 transitions. [2021-11-07 08:14:56,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-07 08:14:56,155 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:14:56,155 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:14:56,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 08:14:56,156 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:14:56,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:14:56,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1920313002, now seen corresponding path program 1 times [2021-11-07 08:14:56,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:14:56,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108123547] [2021-11-07 08:14:56,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:14:56,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:14:56,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:14:56,227 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:14:56,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:14:56,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108123547] [2021-11-07 08:14:56,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108123547] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:14:56,228 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:14:56,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:14:56,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31363065] [2021-11-07 08:14:56,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:14:56,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:14:56,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:14:56,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:14:56,235 INFO L87 Difference]: Start difference. First operand 1434 states and 2468 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) [2021-11-07 08:14:56,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:14:56,425 INFO L93 Difference]: Finished difference Result 4230 states and 7308 transitions. [2021-11-07 08:14:56,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:14:56,425 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 [2021-11-07 08:14:56,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:14:56,443 INFO L225 Difference]: With dead ends: 4230 [2021-11-07 08:14:56,444 INFO L226 Difference]: Without dead ends: 2827 [2021-11-07 08:14:56,447 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:14:56,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2827 states. [2021-11-07 08:14:56,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2827 to 1890. [2021-11-07 08:14:56,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1890 states, 1884 states have (on average 1.7563694267515924) internal successors, (3309), 1889 states have internal predecessors, (3309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:14:56,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1890 states to 1890 states and 3309 transitions. [2021-11-07 08:14:56,577 INFO L78 Accepts]: Start accepts. Automaton has 1890 states and 3309 transitions. Word has length 82 [2021-11-07 08:14:56,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:14:56,577 INFO L470 AbstractCegarLoop]: Abstraction has 1890 states and 3309 transitions. [2021-11-07 08:14:56,577 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) [2021-11-07 08:14:56,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1890 states and 3309 transitions. [2021-11-07 08:14:56,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-07 08:14:56,581 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:14:56,581 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:14:56,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 08:14:56,581 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:14:56,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:14:56,582 INFO L85 PathProgramCache]: Analyzing trace with hash 814645452, now seen corresponding path program 1 times [2021-11-07 08:14:56,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:14:56,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078618599] [2021-11-07 08:14:56,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:14:56,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:14:56,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:14:56,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:14:56,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:14:56,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078618599] [2021-11-07 08:14:56,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078618599] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:14:56,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353664477] [2021-11-07 08:14:56,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:14:56,659 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:14:56,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a358fb84-0e0f-4a56-af0d-886034a3b3f2/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:14:56,663 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a358fb84-0e0f-4a56-af0d-886034a3b3f2/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:14:56,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a358fb84-0e0f-4a56-af0d-886034a3b3f2/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 08:14:57,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:14:57,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 1085 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 08:14:57,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:14:57,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:14:57,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353664477] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:14:57,371 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:14:57,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-07 08:14:57,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953151419] [2021-11-07 08:14:57,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:14:57,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:14:57,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:14:57,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:14:57,373 INFO L87 Difference]: Start difference. First operand 1890 states and 3309 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:14:57,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:14:57,638 INFO L93 Difference]: Finished difference Result 4030 states and 6932 transitions. [2021-11-07 08:14:57,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:14:57,638 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-07 08:14:57,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:14:57,677 INFO L225 Difference]: With dead ends: 4030 [2021-11-07 08:14:57,677 INFO L226 Difference]: Without dead ends: 3093 [2021-11-07 08:14:57,680 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:14:57,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3093 states. [2021-11-07 08:14:57,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3093 to 2153. [2021-11-07 08:14:57,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2153 states, 2147 states have (on average 1.7643223102002794) internal successors, (3788), 2152 states have internal predecessors, (3788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:14:57,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 3788 transitions. [2021-11-07 08:14:57,837 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 3788 transitions. Word has length 82 [2021-11-07 08:14:57,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:14:57,838 INFO L470 AbstractCegarLoop]: Abstraction has 2153 states and 3788 transitions. [2021-11-07 08:14:57,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:14:57,838 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 3788 transitions. [2021-11-07 08:14:57,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-07 08:14:57,842 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:14:57,842 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:14:57,871 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a358fb84-0e0f-4a56-af0d-886034a3b3f2/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-07 08:14:58,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a358fb84-0e0f-4a56-af0d-886034a3b3f2/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-07 08:14:58,059 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:14:58,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:14:58,059 INFO L85 PathProgramCache]: Analyzing trace with hash -168015537, now seen corresponding path program 1 times [2021-11-07 08:14:58,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:14:58,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485974306] [2021-11-07 08:14:58,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:14:58,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:14:58,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:14:58,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:14:58,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:14:58,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485974306] [2021-11-07 08:14:58,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485974306] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:14:58,138 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:14:58,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:14:58,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643047787] [2021-11-07 08:14:58,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:14:58,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:14:58,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:14:58,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:14:58,140 INFO L87 Difference]: Start difference. First operand 2153 states and 3788 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:14:58,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:14:58,389 INFO L93 Difference]: Finished difference Result 6046 states and 10649 transitions. [2021-11-07 08:14:58,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:14:58,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-07 08:14:58,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:14:58,401 INFO L225 Difference]: With dead ends: 6046 [2021-11-07 08:14:58,401 INFO L226 Difference]: Without dead ends: 3994 [2021-11-07 08:14:58,405 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:14:58,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3994 states. [2021-11-07 08:14:58,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3994 to 3057. [2021-11-07 08:14:58,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3057 states, 3051 states have (on average 1.785971812520485) internal successors, (5449), 3056 states have internal predecessors, (5449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:14:58,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3057 states to 3057 states and 5449 transitions. [2021-11-07 08:14:58,597 INFO L78 Accepts]: Start accepts. Automaton has 3057 states and 5449 transitions. Word has length 86 [2021-11-07 08:14:58,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:14:58,598 INFO L470 AbstractCegarLoop]: Abstraction has 3057 states and 5449 transitions. [2021-11-07 08:14:58,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:14:58,599 INFO L276 IsEmpty]: Start isEmpty. Operand 3057 states and 5449 transitions. [2021-11-07 08:14:58,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-07 08:14:58,607 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:14:58,607 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:14:58,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-07 08:14:58,608 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:14:58,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:14:58,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1969183695, now seen corresponding path program 1 times [2021-11-07 08:14:58,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:14:58,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006006297] [2021-11-07 08:14:58,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:14:58,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:14:58,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:14:58,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:14:58,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:14:58,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006006297] [2021-11-07 08:14:58,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006006297] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:14:58,690 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:14:58,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:14:58,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670756186] [2021-11-07 08:14:58,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:14:58,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:14:58,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:14:58,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:14:58,691 INFO L87 Difference]: Start difference. First operand 3057 states and 5449 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:14:58,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:14:58,975 INFO L93 Difference]: Finished difference Result 8494 states and 15151 transitions. [2021-11-07 08:14:58,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:14:58,975 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-07 08:14:58,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:14:58,990 INFO L225 Difference]: With dead ends: 8494 [2021-11-07 08:14:58,991 INFO L226 Difference]: Without dead ends: 5572 [2021-11-07 08:14:58,997 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:14:59,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5572 states. [2021-11-07 08:14:59,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5572 to 4635. [2021-11-07 08:14:59,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4635 states, 4629 states have (on average 1.8029812054439405) internal successors, (8346), 4634 states have internal predecessors, (8346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:14:59,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4635 states to 4635 states and 8346 transitions. [2021-11-07 08:14:59,307 INFO L78 Accepts]: Start accepts. Automaton has 4635 states and 8346 transitions. Word has length 87 [2021-11-07 08:14:59,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:14:59,308 INFO L470 AbstractCegarLoop]: Abstraction has 4635 states and 8346 transitions. [2021-11-07 08:14:59,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:14:59,309 INFO L276 IsEmpty]: Start isEmpty. Operand 4635 states and 8346 transitions. [2021-11-07 08:14:59,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-07 08:14:59,318 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:14:59,318 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:14:59,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-07 08:14:59,319 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:14:59,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:14:59,319 INFO L85 PathProgramCache]: Analyzing trace with hash -703254594, now seen corresponding path program 1 times [2021-11-07 08:14:59,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:14:59,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985083998] [2021-11-07 08:14:59,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:14:59,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:14:59,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:14:59,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:14:59,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:14:59,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985083998] [2021-11-07 08:14:59,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985083998] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:14:59,390 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:14:59,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:14:59,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548799481] [2021-11-07 08:14:59,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:14:59,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:14:59,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:14:59,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:14:59,392 INFO L87 Difference]: Start difference. First operand 4635 states and 8346 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:14:59,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:14:59,817 INFO L93 Difference]: Finished difference Result 12944 states and 23325 transitions. [2021-11-07 08:14:59,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:14:59,817 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-11-07 08:14:59,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:14:59,839 INFO L225 Difference]: With dead ends: 12944 [2021-11-07 08:14:59,839 INFO L226 Difference]: Without dead ends: 8478 [2021-11-07 08:14:59,846 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:14:59,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8478 states. [2021-11-07 08:15:00,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8478 to 7541. [2021-11-07 08:15:00,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7541 states, 7535 states have (on average 1.8148639681486396) internal successors, (13675), 7540 states have internal predecessors, (13675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:00,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7541 states to 7541 states and 13675 transitions. [2021-11-07 08:15:00,260 INFO L78 Accepts]: Start accepts. Automaton has 7541 states and 13675 transitions. Word has length 88 [2021-11-07 08:15:00,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:15:00,260 INFO L470 AbstractCegarLoop]: Abstraction has 7541 states and 13675 transitions. [2021-11-07 08:15:00,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:00,261 INFO L276 IsEmpty]: Start isEmpty. Operand 7541 states and 13675 transitions. [2021-11-07 08:15:00,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-07 08:15:00,273 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:15:00,273 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:15:00,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-07 08:15:00,274 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:15:00,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:15:00,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1318137694, now seen corresponding path program 1 times [2021-11-07 08:15:00,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:15:00,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103954648] [2021-11-07 08:15:00,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:15:00,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:15:00,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:15:00,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:15:00,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:15:00,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103954648] [2021-11-07 08:15:00,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103954648] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:15:00,359 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:15:00,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:15:00,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927770367] [2021-11-07 08:15:00,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:15:00,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:15:00,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:15:00,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:15:00,361 INFO L87 Difference]: Start difference. First operand 7541 states and 13675 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:01,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:15:01,119 INFO L93 Difference]: Finished difference Result 21988 states and 39923 transitions. [2021-11-07 08:15:01,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:15:01,120 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2021-11-07 08:15:01,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:15:01,161 INFO L225 Difference]: With dead ends: 21988 [2021-11-07 08:15:01,161 INFO L226 Difference]: Without dead ends: 14624 [2021-11-07 08:15:01,176 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:15:01,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14624 states. [2021-11-07 08:15:01,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14624 to 13687. [2021-11-07 08:15:01,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13687 states, 13681 states have (on average 1.8229661574446312) internal successors, (24940), 13686 states have internal predecessors, (24940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:01,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13687 states to 13687 states and 24940 transitions. [2021-11-07 08:15:01,908 INFO L78 Accepts]: Start accepts. Automaton has 13687 states and 24940 transitions. Word has length 89 [2021-11-07 08:15:01,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:15:01,908 INFO L470 AbstractCegarLoop]: Abstraction has 13687 states and 24940 transitions. [2021-11-07 08:15:01,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:01,908 INFO L276 IsEmpty]: Start isEmpty. Operand 13687 states and 24940 transitions. [2021-11-07 08:15:01,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-07 08:15:01,927 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:15:01,928 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:15:01,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-07 08:15:01,928 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:15:01,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:15:01,929 INFO L85 PathProgramCache]: Analyzing trace with hash -753607633, now seen corresponding path program 1 times [2021-11-07 08:15:01,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:15:01,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027778404] [2021-11-07 08:15:01,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:15:01,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:15:01,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:15:01,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:15:01,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:15:01,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027778404] [2021-11-07 08:15:01,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027778404] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:15:01,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:15:01,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:15:01,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509152126] [2021-11-07 08:15:01,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:15:01,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:15:01,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:15:01,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:15:01,999 INFO L87 Difference]: Start difference. First operand 13687 states and 24940 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:03,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:15:03,118 INFO L93 Difference]: Finished difference Result 40256 states and 73417 transitions. [2021-11-07 08:15:03,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:15:03,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2021-11-07 08:15:03,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:15:03,200 INFO L225 Difference]: With dead ends: 40256 [2021-11-07 08:15:03,201 INFO L226 Difference]: Without dead ends: 26754 [2021-11-07 08:15:03,221 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:15:03,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26754 states. [2021-11-07 08:15:04,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26754 to 25817. [2021-11-07 08:15:04,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25817 states, 25811 states have (on average 1.8267017938088412) internal successors, (47149), 25816 states have internal predecessors, (47149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:04,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25817 states to 25817 states and 47149 transitions. [2021-11-07 08:15:04,372 INFO L78 Accepts]: Start accepts. Automaton has 25817 states and 47149 transitions. Word has length 90 [2021-11-07 08:15:04,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:15:04,373 INFO L470 AbstractCegarLoop]: Abstraction has 25817 states and 47149 transitions. [2021-11-07 08:15:04,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:04,373 INFO L276 IsEmpty]: Start isEmpty. Operand 25817 states and 47149 transitions. [2021-11-07 08:15:04,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-07 08:15:04,404 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:15:04,404 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:15:04,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-07 08:15:04,405 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:15:04,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:15:04,406 INFO L85 PathProgramCache]: Analyzing trace with hash 981623151, now seen corresponding path program 1 times [2021-11-07 08:15:04,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:15:04,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320905996] [2021-11-07 08:15:04,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:15:04,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:15:04,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:15:04,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:15:04,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:15:04,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320905996] [2021-11-07 08:15:04,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320905996] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:15:04,489 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:15:04,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:15:04,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196223042] [2021-11-07 08:15:04,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:15:04,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:15:04,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:15:04,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:15:04,493 INFO L87 Difference]: Start difference. First operand 25817 states and 47149 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:06,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:15:06,370 INFO L93 Difference]: Finished difference Result 71285 states and 129780 transitions. [2021-11-07 08:15:06,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:15:06,370 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2021-11-07 08:15:06,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:15:06,497 INFO L225 Difference]: With dead ends: 71285 [2021-11-07 08:15:06,497 INFO L226 Difference]: Without dead ends: 45700 [2021-11-07 08:15:06,542 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:15:06,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45700 states. [2021-11-07 08:15:08,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45700 to 44763. [2021-11-07 08:15:08,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44763 states, 44757 states have (on average 1.817056549813437) internal successors, (81326), 44762 states have internal predecessors, (81326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:08,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44763 states to 44763 states and 81326 transitions. [2021-11-07 08:15:08,343 INFO L78 Accepts]: Start accepts. Automaton has 44763 states and 81326 transitions. Word has length 91 [2021-11-07 08:15:08,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:15:08,343 INFO L470 AbstractCegarLoop]: Abstraction has 44763 states and 81326 transitions. [2021-11-07 08:15:08,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:08,345 INFO L276 IsEmpty]: Start isEmpty. Operand 44763 states and 81326 transitions. [2021-11-07 08:15:08,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-07 08:15:08,378 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:15:08,378 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:15:08,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-07 08:15:08,379 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:15:08,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:15:08,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1719422760, now seen corresponding path program 1 times [2021-11-07 08:15:08,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:15:08,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981456463] [2021-11-07 08:15:08,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:15:08,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:15:08,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:15:08,459 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 08:15:08,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:15:08,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981456463] [2021-11-07 08:15:08,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981456463] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:15:08,460 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:15:08,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 08:15:08,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348793698] [2021-11-07 08:15:08,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:15:08,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:15:08,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:15:08,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:15:08,462 INFO L87 Difference]: Start difference. First operand 44763 states and 81326 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:11,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:15:11,885 INFO L93 Difference]: Finished difference Result 131898 states and 239613 transitions. [2021-11-07 08:15:11,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 08:15:11,887 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-07 08:15:11,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:15:12,076 INFO L225 Difference]: With dead ends: 131898 [2021-11-07 08:15:12,076 INFO L226 Difference]: Without dead ends: 87435 [2021-11-07 08:15:12,128 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 08:15:12,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87435 states. [2021-11-07 08:15:14,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87435 to 44763. [2021-11-07 08:15:14,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44763 states, 44757 states have (on average 1.8112920883884085) internal successors, (81068), 44762 states have internal predecessors, (81068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:14,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44763 states to 44763 states and 81068 transitions. [2021-11-07 08:15:14,449 INFO L78 Accepts]: Start accepts. Automaton has 44763 states and 81068 transitions. Word has length 92 [2021-11-07 08:15:14,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:15:14,449 INFO L470 AbstractCegarLoop]: Abstraction has 44763 states and 81068 transitions. [2021-11-07 08:15:14,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:14,449 INFO L276 IsEmpty]: Start isEmpty. Operand 44763 states and 81068 transitions. [2021-11-07 08:15:14,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-07 08:15:14,477 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:15:14,478 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:15:14,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-07 08:15:14,478 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:15:14,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:15:14,479 INFO L85 PathProgramCache]: Analyzing trace with hash 613755210, now seen corresponding path program 2 times [2021-11-07 08:15:14,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:15:14,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434744773] [2021-11-07 08:15:14,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:15:14,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:15:14,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:15:14,540 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:15:14,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:15:14,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434744773] [2021-11-07 08:15:14,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434744773] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:15:14,541 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:15:14,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:15:14,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827399571] [2021-11-07 08:15:14,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:15:14,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:15:14,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:15:14,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:15:14,543 INFO L87 Difference]: Start difference. First operand 44763 states and 81068 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:16,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:15:16,189 INFO L93 Difference]: Finished difference Result 90157 states and 163182 transitions. [2021-11-07 08:15:16,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:15:16,189 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-07 08:15:16,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:15:16,284 INFO L225 Difference]: With dead ends: 90157 [2021-11-07 08:15:16,284 INFO L226 Difference]: Without dead ends: 45700 [2021-11-07 08:15:16,316 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:15:16,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45700 states. [2021-11-07 08:15:18,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45700 to 44763. [2021-11-07 08:15:18,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44763 states, 44757 states have (on average 1.8084322005496347) internal successors, (80940), 44762 states have internal predecessors, (80940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:18,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44763 states to 44763 states and 80940 transitions. [2021-11-07 08:15:18,189 INFO L78 Accepts]: Start accepts. Automaton has 44763 states and 80940 transitions. Word has length 92 [2021-11-07 08:15:18,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:15:18,189 INFO L470 AbstractCegarLoop]: Abstraction has 44763 states and 80940 transitions. [2021-11-07 08:15:18,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:18,190 INFO L276 IsEmpty]: Start isEmpty. Operand 44763 states and 80940 transitions. [2021-11-07 08:15:18,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-07 08:15:18,207 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:15:18,207 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:15:18,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-07 08:15:18,208 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:15:18,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:15:18,209 INFO L85 PathProgramCache]: Analyzing trace with hash -934853507, now seen corresponding path program 1 times [2021-11-07 08:15:18,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:15:18,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968508202] [2021-11-07 08:15:18,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:15:18,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:15:18,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:15:18,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:15:18,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:15:18,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968508202] [2021-11-07 08:15:18,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968508202] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:15:18,271 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:15:18,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:15:18,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930765125] [2021-11-07 08:15:18,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:15:18,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:15:18,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:15:18,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:15:18,273 INFO L87 Difference]: Start difference. First operand 44763 states and 80940 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:21,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:15:21,232 INFO L93 Difference]: Finished difference Result 125783 states and 227256 transitions. [2021-11-07 08:15:21,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:15:21,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-07 08:15:21,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:15:21,369 INFO L225 Difference]: With dead ends: 125783 [2021-11-07 08:15:21,369 INFO L226 Difference]: Without dead ends: 81286 [2021-11-07 08:15:21,405 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:15:21,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81286 states. [2021-11-07 08:15:24,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81286 to 80349. [2021-11-07 08:15:24,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80349 states, 80343 states have (on average 1.8040277311028963) internal successors, (144941), 80348 states have internal predecessors, (144941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:25,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80349 states to 80349 states and 144941 transitions. [2021-11-07 08:15:25,146 INFO L78 Accepts]: Start accepts. Automaton has 80349 states and 144941 transitions. Word has length 92 [2021-11-07 08:15:25,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:15:25,146 INFO L470 AbstractCegarLoop]: Abstraction has 80349 states and 144941 transitions. [2021-11-07 08:15:25,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:25,146 INFO L276 IsEmpty]: Start isEmpty. Operand 80349 states and 144941 transitions. [2021-11-07 08:15:25,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-07 08:15:25,165 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:15:25,165 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:15:25,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-07 08:15:25,166 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:15:25,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:15:25,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1314152380, now seen corresponding path program 1 times [2021-11-07 08:15:25,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:15:25,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080572255] [2021-11-07 08:15:25,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:15:25,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:15:25,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:15:25,256 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 08:15:25,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:15:25,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080572255] [2021-11-07 08:15:25,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080572255] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:15:25,257 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:15:25,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 08:15:25,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818371001] [2021-11-07 08:15:25,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 08:15:25,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:15:25,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:15:25,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:15:25,259 INFO L87 Difference]: Start difference. First operand 80349 states and 144941 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:15:30,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:15:30,893 INFO L93 Difference]: Finished difference Result 163966 states and 295310 transitions. [2021-11-07 08:15:30,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 08:15:30,894 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-07 08:15:30,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:15:31,317 INFO L225 Difference]: With dead ends: 163966 [2021-11-07 08:15:31,318 INFO L226 Difference]: Without dead ends: 163047 [2021-11-07 08:15:31,374 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-07 08:15:31,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163047 states.