./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec8_product32.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_6ef35b7a-9bd2-48d7-9519-f5a90df5ae64/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef35b7a-9bd2-48d7-9519-f5a90df5ae64/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_6ef35b7a-9bd2-48d7-9519-f5a90df5ae64/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef35b7a-9bd2-48d7-9519-f5a90df5ae64/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec8_product32.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef35b7a-9bd2-48d7-9519-f5a90df5ae64/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_6ef35b7a-9bd2-48d7-9519-f5a90df5ae64/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 614dee6ac528b2b5bcd12e57f515dcc43213e2cedeb5bd1e2531b305b02c78fa --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 08:42:33,843 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 08:42:33,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 08:42:33,899 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 08:42:33,900 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 08:42:33,906 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 08:42:33,908 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 08:42:33,913 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 08:42:33,916 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 08:42:33,924 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 08:42:33,926 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 08:42:33,928 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 08:42:33,929 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 08:42:33,932 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 08:42:33,935 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 08:42:33,941 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 08:42:33,943 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 08:42:33,948 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 08:42:33,953 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 08:42:33,961 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 08:42:33,964 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 08:42:33,966 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 08:42:33,970 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 08:42:33,971 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 08:42:33,978 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 08:42:33,979 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 08:42:33,980 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 08:42:33,982 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 08:42:33,983 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 08:42:33,985 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 08:42:33,986 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 08:42:33,987 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 08:42:33,988 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 08:42:33,989 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 08:42:33,990 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 08:42:33,990 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 08:42:33,991 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 08:42:33,991 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 08:42:33,991 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 08:42:33,992 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 08:42:33,993 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 08:42:33,994 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef35b7a-9bd2-48d7-9519-f5a90df5ae64/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-07 08:42:34,023 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 08:42:34,023 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 08:42:34,024 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 08:42:34,024 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 08:42:34,025 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 08:42:34,026 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 08:42:34,026 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 08:42:34,026 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 08:42:34,026 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 08:42:34,027 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 08:42:34,027 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 08:42:34,027 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 08:42:34,027 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 08:42:34,028 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 08:42:34,028 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 08:42:34,028 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 08:42:34,028 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 08:42:34,029 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 08:42:34,029 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 08:42:34,029 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 08:42:34,030 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 08:42:34,030 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 08:42:34,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:42:34,030 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 08:42:34,031 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 08:42:34,031 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 08:42:34,031 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 08:42:34,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 08:42:34,032 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 08:42:34,032 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 08:42:34,032 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 08:42:34,032 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 08:42:34,033 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_6ef35b7a-9bd2-48d7-9519-f5a90df5ae64/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef35b7a-9bd2-48d7-9519-f5a90df5ae64/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 614dee6ac528b2b5bcd12e57f515dcc43213e2cedeb5bd1e2531b305b02c78fa [2021-11-07 08:42:34,323 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 08:42:34,358 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 08:42:34,362 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 08:42:34,363 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 08:42:34,364 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 08:42:34,365 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef35b7a-9bd2-48d7-9519-f5a90df5ae64/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/product-lines/email_spec8_product32.cil.c [2021-11-07 08:42:34,454 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef35b7a-9bd2-48d7-9519-f5a90df5ae64/bin/uautomizer-AkOaLMaTGY/data/09e652421/ef189fb188b14238b888198bc3cdd8bc/FLAG1b9138fa8 [2021-11-07 08:42:35,182 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 08:42:35,183 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef35b7a-9bd2-48d7-9519-f5a90df5ae64/sv-benchmarks/c/product-lines/email_spec8_product32.cil.c [2021-11-07 08:42:35,217 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef35b7a-9bd2-48d7-9519-f5a90df5ae64/bin/uautomizer-AkOaLMaTGY/data/09e652421/ef189fb188b14238b888198bc3cdd8bc/FLAG1b9138fa8 [2021-11-07 08:42:35,375 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef35b7a-9bd2-48d7-9519-f5a90df5ae64/bin/uautomizer-AkOaLMaTGY/data/09e652421/ef189fb188b14238b888198bc3cdd8bc [2021-11-07 08:42:35,378 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 08:42:35,380 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 08:42:35,383 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 08:42:35,383 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 08:42:35,416 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 08:42:35,417 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:42:35" (1/1) ... [2021-11-07 08:42:35,418 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@348089a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:35, skipping insertion in model container [2021-11-07 08:42:35,419 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:42:35" (1/1) ... [2021-11-07 08:42:35,425 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 08:42:35,498 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:42:35,985 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_6ef35b7a-9bd2-48d7-9519-f5a90df5ae64/sv-benchmarks/c/product-lines/email_spec8_product32.cil.c[37064,37077] [2021-11-07 08:42:36,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:42:36,233 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 08:42:36,327 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_6ef35b7a-9bd2-48d7-9519-f5a90df5ae64/sv-benchmarks/c/product-lines/email_spec8_product32.cil.c[37064,37077] [2021-11-07 08:42:36,372 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:42:36,426 INFO L208 MainTranslator]: Completed translation [2021-11-07 08:42:36,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:36 WrapperNode [2021-11-07 08:42:36,427 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 08:42:36,428 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 08:42:36,428 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 08:42:36,428 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 08:42:36,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:36" (1/1) ... [2021-11-07 08:42:36,505 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:36" (1/1) ... [2021-11-07 08:42:36,748 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 08:42:36,749 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 08:42:36,750 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 08:42:36,750 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 08:42:36,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:36" (1/1) ... [2021-11-07 08:42:36,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:36" (1/1) ... [2021-11-07 08:42:36,791 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:36" (1/1) ... [2021-11-07 08:42:36,791 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:36" (1/1) ... [2021-11-07 08:42:36,878 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:36" (1/1) ... [2021-11-07 08:42:36,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:36" (1/1) ... [2021-11-07 08:42:36,953 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:36" (1/1) ... [2021-11-07 08:42:36,977 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 08:42:36,978 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 08:42:36,978 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 08:42:36,979 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 08:42:36,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:36" (1/1) ... [2021-11-07 08:42:36,990 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:42:37,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef35b7a-9bd2-48d7-9519-f5a90df5ae64/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:42:37,017 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef35b7a-9bd2-48d7-9519-f5a90df5ae64/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 08:42:37,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef35b7a-9bd2-48d7-9519-f5a90df5ae64/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 08:42:37,080 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-07 08:42:37,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 08:42:37,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 08:42:37,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 08:42:37,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 08:42:40,873 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 08:42:40,873 INFO L299 CfgBuilder]: Removed 693 assume(true) statements. [2021-11-07 08:42:40,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:42:40 BoogieIcfgContainer [2021-11-07 08:42:40,878 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 08:42:40,880 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 08:42:40,880 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 08:42:40,884 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 08:42:40,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:42:35" (1/3) ... [2021-11-07 08:42:40,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4455b78f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:42:40, skipping insertion in model container [2021-11-07 08:42:40,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:36" (2/3) ... [2021-11-07 08:42:40,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4455b78f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:42:40, skipping insertion in model container [2021-11-07 08:42:40,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:42:40" (3/3) ... [2021-11-07 08:42:40,888 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec8_product32.cil.c [2021-11-07 08:42:40,895 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 08:42:40,895 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-07 08:42:40,964 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 08:42:40,971 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 08:42:40,971 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-07 08:42:41,018 INFO L276 IsEmpty]: Start isEmpty. Operand has 1080 states, 1073 states have (on average 1.7520969245107176) internal successors, (1880), 1079 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states 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 08:42:41,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-07 08:42:41,034 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:42:41,035 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:42:41,035 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 08:42:41,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:42:41,040 INFO L85 PathProgramCache]: Analyzing trace with hash -710705232, now seen corresponding path program 1 times [2021-11-07 08:42:41,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:42:41,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58559345] [2021-11-07 08:42:41,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:42:41,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:42:41,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:42:41,469 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 08:42:41,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:42:41,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58559345] [2021-11-07 08:42:41,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58559345] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:42:41,471 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:42:41,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:42:41,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997718460] [2021-11-07 08:42:41,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:42:41,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:42:41,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:42:41,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:42:41,510 INFO L87 Difference]: Start difference. First operand has 1080 states, 1073 states have (on average 1.7520969245107176) internal successors, (1880), 1079 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:42:41,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:42:41,772 INFO L93 Difference]: Finished difference Result 3205 states and 5582 transitions. [2021-11-07 08:42:41,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:42:41,774 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-07 08:42:41,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:42:41,811 INFO L225 Difference]: With dead ends: 3205 [2021-11-07 08:42:41,811 INFO L226 Difference]: Without dead ends: 1820 [2021-11-07 08:42:41,824 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 08:42:41,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1820 states. [2021-11-07 08:42:41,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1820 to 919. [2021-11-07 08:42:41,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 919 states, 913 states have (on average 1.7469879518072289) internal successors, (1595), 918 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states 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 08:42:41,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1595 transitions. [2021-11-07 08:42:41,972 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1595 transitions. Word has length 48 [2021-11-07 08:42:41,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:42:41,972 INFO L470 AbstractCegarLoop]: Abstraction has 919 states and 1595 transitions. [2021-11-07 08:42:41,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:42:41,973 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1595 transitions. [2021-11-07 08:42:41,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-07 08:42:41,977 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:42:41,978 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:42:41,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 08:42:41,979 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 08:42:41,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:42:41,980 INFO L85 PathProgramCache]: Analyzing trace with hash -594177906, now seen corresponding path program 1 times [2021-11-07 08:42:41,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:42:41,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199753192] [2021-11-07 08:42:41,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:42:41,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:42:42,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:42:42,201 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 08:42:42,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:42:42,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199753192] [2021-11-07 08:42:42,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199753192] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:42:42,204 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:42:42,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 08:42:42,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771659629] [2021-11-07 08:42:42,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:42:42,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:42:42,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:42:42,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:42:42,209 INFO L87 Difference]: Start difference. First operand 919 states and 1595 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:42:42,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:42:42,535 INFO L93 Difference]: Finished difference Result 2706 states and 4701 transitions. [2021-11-07 08:42:42,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 08:42:42,539 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-07 08:42:42,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:42:42,554 INFO L225 Difference]: With dead ends: 2706 [2021-11-07 08:42:42,554 INFO L226 Difference]: Without dead ends: 1806 [2021-11-07 08:42:42,557 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 08:42:42,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1806 states. [2021-11-07 08:42:42,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1806 to 919. [2021-11-07 08:42:42,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 919 states, 913 states have (on average 1.745892661555312) internal successors, (1594), 918 states have internal predecessors, (1594), 0 states have call successors, (0), 0 states 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 08:42:42,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1594 transitions. [2021-11-07 08:42:42,612 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1594 transitions. Word has length 50 [2021-11-07 08:42:42,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:42:42,613 INFO L470 AbstractCegarLoop]: Abstraction has 919 states and 1594 transitions. [2021-11-07 08:42:42,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:42:42,614 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1594 transitions. [2021-11-07 08:42:42,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 08:42:42,618 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:42:42,618 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:42:42,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 08:42:42,620 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 08:42:42,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:42:42,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1290509979, now seen corresponding path program 1 times [2021-11-07 08:42:42,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:42:42,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696851085] [2021-11-07 08:42:42,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:42:42,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:42:42,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:42:42,744 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 08:42:42,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:42:42,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696851085] [2021-11-07 08:42:42,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696851085] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:42:42,745 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:42:42,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:42:42,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142304060] [2021-11-07 08:42:42,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:42:42,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:42:42,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:42:42,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:42:42,748 INFO L87 Difference]: Start difference. First operand 919 states and 1594 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:42:42,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:42:42,823 INFO L93 Difference]: Finished difference Result 1820 states and 3162 transitions. [2021-11-07 08:42:42,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:42:42,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-07 08:42:42,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:42:42,831 INFO L225 Difference]: With dead ends: 1820 [2021-11-07 08:42:42,831 INFO L226 Difference]: Without dead ends: 924 [2021-11-07 08:42:42,833 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 08:42:42,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2021-11-07 08:42:42,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 919. [2021-11-07 08:42:42,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 919 states, 913 states have (on average 1.742606790799562) internal successors, (1591), 918 states have internal predecessors, (1591), 0 states have call successors, (0), 0 states 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 08:42:42,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1591 transitions. [2021-11-07 08:42:42,877 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1591 transitions. Word has length 51 [2021-11-07 08:42:42,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:42:42,878 INFO L470 AbstractCegarLoop]: Abstraction has 919 states and 1591 transitions. [2021-11-07 08:42:42,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:42:42,878 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1591 transitions. [2021-11-07 08:42:42,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-07 08:42:42,881 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:42:42,882 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:42:42,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 08:42:42,883 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 08:42:42,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:42:42,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1633624374, now seen corresponding path program 1 times [2021-11-07 08:42:42,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:42:42,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643386606] [2021-11-07 08:42:42,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:42:42,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:42:42,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:42:43,046 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 08:42:43,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:42:43,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643386606] [2021-11-07 08:42:43,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643386606] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:42:43,055 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:42:43,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 08:42:43,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138137822] [2021-11-07 08:42:43,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:42:43,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:42:43,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:42:43,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:42:43,059 INFO L87 Difference]: Start difference. First operand 919 states and 1591 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:42:43,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:42:43,385 INFO L93 Difference]: Finished difference Result 2696 states and 4681 transitions. [2021-11-07 08:42:43,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:42:43,386 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-07 08:42:43,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:42:43,400 INFO L225 Difference]: With dead ends: 2696 [2021-11-07 08:42:43,400 INFO L226 Difference]: Without dead ends: 1804 [2021-11-07 08:42:43,403 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 08:42:43,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1804 states. [2021-11-07 08:42:43,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1804 to 919. [2021-11-07 08:42:43,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 919 states, 913 states have (on average 1.7415115005476451) internal successors, (1590), 918 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states 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 08:42:43,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1590 transitions. [2021-11-07 08:42:43,475 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1590 transitions. Word has length 53 [2021-11-07 08:42:43,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:42:43,477 INFO L470 AbstractCegarLoop]: Abstraction has 919 states and 1590 transitions. [2021-11-07 08:42:43,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:42:43,478 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1590 transitions. [2021-11-07 08:42:43,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-07 08:42:43,481 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:42:43,481 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] [2021-11-07 08:42:43,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 08:42:43,482 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 08:42:43,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:42:43,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1331395815, now seen corresponding path program 1 times [2021-11-07 08:42:43,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:42:43,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708725386] [2021-11-07 08:42:43,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:42:43,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:42:43,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:42:43,644 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 08:42:43,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:42:43,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708725386] [2021-11-07 08:42:43,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708725386] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:42:43,645 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:42:43,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 08:42:43,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666053392] [2021-11-07 08:42:43,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:42:43,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:42:43,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:42:43,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:42:43,649 INFO L87 Difference]: Start difference. First operand 919 states and 1590 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:42:43,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:42:43,899 INFO L93 Difference]: Finished difference Result 2701 states and 4685 transitions. [2021-11-07 08:42:43,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:42:43,900 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-07 08:42:43,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:42:43,913 INFO L225 Difference]: With dead ends: 2701 [2021-11-07 08:42:43,913 INFO L226 Difference]: Without dead ends: 1809 [2021-11-07 08:42:43,917 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 08:42:43,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1809 states. [2021-11-07 08:42:43,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1809 to 919. [2021-11-07 08:42:43,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 919 states, 913 states have (on average 1.7404162102957283) internal successors, (1589), 918 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states 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 08:42:43,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1589 transitions. [2021-11-07 08:42:43,983 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1589 transitions. Word has length 54 [2021-11-07 08:42:43,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:42:43,984 INFO L470 AbstractCegarLoop]: Abstraction has 919 states and 1589 transitions. [2021-11-07 08:42:43,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:42:43,984 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1589 transitions. [2021-11-07 08:42:43,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-07 08:42:43,986 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:42:43,986 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] [2021-11-07 08:42:43,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 08:42:43,986 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 08:42:43,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:42:43,987 INFO L85 PathProgramCache]: Analyzing trace with hash 2074751537, now seen corresponding path program 1 times [2021-11-07 08:42:43,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:42:43,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590033142] [2021-11-07 08:42:43,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:42:43,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:42:44,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:42:44,094 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 08:42:44,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:42:44,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590033142] [2021-11-07 08:42:44,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590033142] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:42:44,095 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:42:44,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:42:44,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213100729] [2021-11-07 08:42:44,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:42:44,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:42:44,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:42:44,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:42:44,102 INFO L87 Difference]: Start difference. First operand 919 states and 1589 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:42:44,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:42:44,197 INFO L93 Difference]: Finished difference Result 1557 states and 2672 transitions. [2021-11-07 08:42:44,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:42:44,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-07 08:42:44,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:42:44,214 INFO L225 Difference]: With dead ends: 1557 [2021-11-07 08:42:44,214 INFO L226 Difference]: Without dead ends: 922 [2021-11-07 08:42:44,215 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 08:42:44,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2021-11-07 08:42:44,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 921. [2021-11-07 08:42:44,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 921 states, 915 states have (on average 1.7387978142076503) internal successors, (1591), 920 states have internal predecessors, (1591), 0 states have call successors, (0), 0 states 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 08:42:44,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 1591 transitions. [2021-11-07 08:42:44,275 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 1591 transitions. Word has length 55 [2021-11-07 08:42:44,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:42:44,275 INFO L470 AbstractCegarLoop]: Abstraction has 921 states and 1591 transitions. [2021-11-07 08:42:44,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:42:44,276 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 1591 transitions. [2021-11-07 08:42:44,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 08:42:44,277 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:42:44,277 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] [2021-11-07 08:42:44,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 08:42:44,278 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 08:42:44,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:42:44,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1412826399, now seen corresponding path program 1 times [2021-11-07 08:42:44,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:42:44,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307651584] [2021-11-07 08:42:44,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:42:44,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:42:44,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:42:44,378 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 08:42:44,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:42:44,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307651584] [2021-11-07 08:42:44,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307651584] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:42:44,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:42:44,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:42:44,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639757446] [2021-11-07 08:42:44,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:42:44,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:42:44,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:42:44,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:42:44,381 INFO L87 Difference]: Start difference. First operand 921 states and 1591 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:42:44,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:42:44,498 INFO L93 Difference]: Finished difference Result 2649 states and 4597 transitions. [2021-11-07 08:42:44,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:42:44,499 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 08:42:44,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:42:44,510 INFO L225 Difference]: With dead ends: 2649 [2021-11-07 08:42:44,510 INFO L226 Difference]: Without dead ends: 1759 [2021-11-07 08:42:44,513 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 08:42:44,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1759 states. [2021-11-07 08:42:44,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1759 to 1124. [2021-11-07 08:42:44,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1124 states, 1118 states have (on average 1.7584973166368516) internal successors, (1966), 1123 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states 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 08:42:44,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1124 states to 1124 states and 1966 transitions. [2021-11-07 08:42:44,601 INFO L78 Accepts]: Start accepts. Automaton has 1124 states and 1966 transitions. Word has length 63 [2021-11-07 08:42:44,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:42:44,604 INFO L470 AbstractCegarLoop]: Abstraction has 1124 states and 1966 transitions. [2021-11-07 08:42:44,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:42:44,604 INFO L276 IsEmpty]: Start isEmpty. Operand 1124 states and 1966 transitions. [2021-11-07 08:42:44,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 08:42:44,606 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:42:44,606 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] [2021-11-07 08:42:44,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 08:42:44,607 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 08:42:44,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:42:44,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1287266558, now seen corresponding path program 1 times [2021-11-07 08:42:44,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:42:44,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858884269] [2021-11-07 08:42:44,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:42:44,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:42:44,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:42:44,734 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 08:42:44,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:42:44,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858884269] [2021-11-07 08:42:44,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858884269] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:42:44,735 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:42:44,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 08:42:44,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213984926] [2021-11-07 08:42:44,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:42:44,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:42:44,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:42:44,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:42:44,738 INFO L87 Difference]: Start difference. First operand 1124 states and 1966 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:42:45,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:42:45,839 INFO L93 Difference]: Finished difference Result 3302 states and 5804 transitions. [2021-11-07 08:42:45,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:42:45,840 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-07 08:42:45,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:42:45,854 INFO L225 Difference]: With dead ends: 3302 [2021-11-07 08:42:45,854 INFO L226 Difference]: Without dead ends: 2209 [2021-11-07 08:42:45,856 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 08:42:45,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2209 states. [2021-11-07 08:42:45,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2209 to 1124. [2021-11-07 08:42:45,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1124 states, 1118 states have (on average 1.7567084078711985) internal successors, (1964), 1123 states have internal predecessors, (1964), 0 states have call successors, (0), 0 states 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 08:42:45,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1124 states to 1124 states and 1964 transitions. [2021-11-07 08:42:45,945 INFO L78 Accepts]: Start accepts. Automaton has 1124 states and 1964 transitions. Word has length 64 [2021-11-07 08:42:45,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:42:45,945 INFO L470 AbstractCegarLoop]: Abstraction has 1124 states and 1964 transitions. [2021-11-07 08:42:45,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:42:45,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1124 states and 1964 transitions. [2021-11-07 08:42:45,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-07 08:42:45,949 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:42:45,949 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] [2021-11-07 08:42:45,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 08:42:45,950 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 08:42:45,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:42:45,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1975737045, now seen corresponding path program 1 times [2021-11-07 08:42:45,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:42:45,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897946242] [2021-11-07 08:42:45,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:42:45,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:42:45,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:42:46,028 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 08:42:46,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:42:46,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897946242] [2021-11-07 08:42:46,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897946242] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:42:46,030 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:42:46,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:42:46,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418115926] [2021-11-07 08:42:46,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:42:46,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:42:46,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:42:46,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:42:46,035 INFO L87 Difference]: Start difference. First operand 1124 states and 1964 transitions. 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 08:42:46,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:42:46,190 INFO L93 Difference]: Finished difference Result 3300 states and 5796 transitions. [2021-11-07 08:42:46,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:42:46,191 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 08:42:46,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:42:46,206 INFO L225 Difference]: With dead ends: 3300 [2021-11-07 08:42:46,206 INFO L226 Difference]: Without dead ends: 2207 [2021-11-07 08:42:46,208 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 08:42:46,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2207 states. [2021-11-07 08:42:46,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2207 to 1572. [2021-11-07 08:42:46,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1572 states, 1566 states have (on average 1.7822477650063857) internal successors, (2791), 1571 states have internal predecessors, (2791), 0 states have call successors, (0), 0 states 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 08:42:46,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 2791 transitions. [2021-11-07 08:42:46,336 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 2791 transitions. Word has length 65 [2021-11-07 08:42:46,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:42:46,337 INFO L470 AbstractCegarLoop]: Abstraction has 1572 states and 2791 transitions. [2021-11-07 08:42:46,337 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 08:42:46,338 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 2791 transitions. [2021-11-07 08:42:46,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-07 08:42:46,340 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:42:46,341 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] [2021-11-07 08:42:46,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 08:42:46,341 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 08:42:46,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:42:46,342 INFO L85 PathProgramCache]: Analyzing trace with hash 2020126835, now seen corresponding path program 1 times [2021-11-07 08:42:46,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:42:46,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203815035] [2021-11-07 08:42:46,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:42:46,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:42:46,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:42:46,429 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 08:42:46,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:42:46,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203815035] [2021-11-07 08:42:46,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203815035] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:42:46,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206262224] [2021-11-07 08:42:46,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:42:46,431 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:42:46,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef35b7a-9bd2-48d7-9519-f5a90df5ae64/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:42:46,436 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef35b7a-9bd2-48d7-9519-f5a90df5ae64/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:42:46,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef35b7a-9bd2-48d7-9519-f5a90df5ae64/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 08:42:46,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:42:46,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 941 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 08:42:46,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:42:47,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 08:42:47,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206262224] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:42:47,178 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 08:42:47,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-07 08:42:47,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208340919] [2021-11-07 08:42:47,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:42:47,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:42:47,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:42:47,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:42:47,180 INFO L87 Difference]: Start difference. First operand 1572 states and 2791 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:42:47,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:42:47,320 INFO L93 Difference]: Finished difference Result 2109 states and 3700 transitions. [2021-11-07 08:42:47,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:42:47,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-07 08:42:47,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:42:47,332 INFO L225 Difference]: With dead ends: 2109 [2021-11-07 08:42:47,332 INFO L226 Difference]: Without dead ends: 1574 [2021-11-07 08:42:47,333 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:42:47,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1574 states. [2021-11-07 08:42:47,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1574 to 1560. [2021-11-07 08:42:47,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1560 states, 1556 states have (on average 1.782133676092545) internal successors, (2773), 1559 states have internal predecessors, (2773), 0 states have call successors, (0), 0 states 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 08:42:47,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1560 states to 1560 states and 2773 transitions. [2021-11-07 08:42:47,471 INFO L78 Accepts]: Start accepts. Automaton has 1560 states and 2773 transitions. Word has length 65 [2021-11-07 08:42:47,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:42:47,472 INFO L470 AbstractCegarLoop]: Abstraction has 1560 states and 2773 transitions. [2021-11-07 08:42:47,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:42:47,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1560 states and 2773 transitions. [2021-11-07 08:42:47,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-07 08:42:47,476 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:42:47,477 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, 1, 1, 1, 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 08:42:47,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef35b7a-9bd2-48d7-9519-f5a90df5ae64/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 08:42:47,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef35b7a-9bd2-48d7-9519-f5a90df5ae64/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-07 08:42:47,697 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:42:47,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:42:47,698 INFO L85 PathProgramCache]: Analyzing trace with hash -329438850, now seen corresponding path program 1 times [2021-11-07 08:42:47,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:42:47,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776660115] [2021-11-07 08:42:47,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:42:47,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:42:47,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:42:47,798 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 08:42:47,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:42:47,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776660115] [2021-11-07 08:42:47,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776660115] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:42:47,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746377814] [2021-11-07 08:42:47,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:42:47,799 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:42:47,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef35b7a-9bd2-48d7-9519-f5a90df5ae64/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:42:47,800 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef35b7a-9bd2-48d7-9519-f5a90df5ae64/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:42:47,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef35b7a-9bd2-48d7-9519-f5a90df5ae64/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 08:42:48,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:42:48,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 1286 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 08:42:48,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:42:48,619 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 08:42:48,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746377814] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:42:48,620 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:42:48,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-07 08:42:48,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469032641] [2021-11-07 08:42:48,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:42:48,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:42:48,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:42:48,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:42:48,622 INFO L87 Difference]: Start difference. First operand 1560 states and 2773 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:42:48,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:42:48,846 INFO L93 Difference]: Finished difference Result 3068 states and 5373 transitions. [2021-11-07 08:42:48,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:42:48,847 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2021-11-07 08:42:48,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:42:48,864 INFO L225 Difference]: With dead ends: 3068 [2021-11-07 08:42:48,864 INFO L226 Difference]: Without dead ends: 2445 [2021-11-07 08:42:48,867 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 109 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 08:42:48,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2445 states. [2021-11-07 08:42:49,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2445 to 1819. [2021-11-07 08:42:49,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1819 states, 1815 states have (on average 1.7878787878787878) internal successors, (3245), 1818 states have internal predecessors, (3245), 0 states have call successors, (0), 0 states 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 08:42:49,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1819 states to 1819 states and 3245 transitions. [2021-11-07 08:42:49,018 INFO L78 Accepts]: Start accepts. Automaton has 1819 states and 3245 transitions. Word has length 109 [2021-11-07 08:42:49,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:42:49,018 INFO L470 AbstractCegarLoop]: Abstraction has 1819 states and 3245 transitions. [2021-11-07 08:42:49,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:42:49,019 INFO L276 IsEmpty]: Start isEmpty. Operand 1819 states and 3245 transitions. [2021-11-07 08:42:49,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-07 08:42:49,024 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:42:49,024 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:42:49,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef35b7a-9bd2-48d7-9519-f5a90df5ae64/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 08:42:49,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ef35b7a-9bd2-48d7-9519-f5a90df5ae64/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-07 08:42:49,239 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:42:49,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:42:49,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1928601029, now seen corresponding path program 1 times [2021-11-07 08:42:49,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:42:49,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400481702] [2021-11-07 08:42:49,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:42:49,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:42:49,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:42:49,342 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 08:42:49,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:42:49,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400481702] [2021-11-07 08:42:49,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400481702] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:42:49,343 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:42:49,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:42:49,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269767355] [2021-11-07 08:42:49,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:42:49,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:42:49,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:42:49,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:42:49,345 INFO L87 Difference]: Start difference. First operand 1819 states and 3245 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:42:49,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:42:49,609 INFO L93 Difference]: Finished difference Result 5048 states and 9027 transitions. [2021-11-07 08:42:49,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:42:49,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2021-11-07 08:42:49,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:42:49,631 INFO L225 Difference]: With dead ends: 5048 [2021-11-07 08:42:49,631 INFO L226 Difference]: Without dead ends: 3330 [2021-11-07 08:42:49,634 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 08:42:49,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3330 states. [2021-11-07 08:42:49,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3330 to 2707. [2021-11-07 08:42:49,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2707 states, 2703 states have (on average 1.804661487236404) internal successors, (4878), 2706 states have internal predecessors, (4878), 0 states have call successors, (0), 0 states 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 08:42:49,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2707 states to 2707 states and 4878 transitions. [2021-11-07 08:42:49,854 INFO L78 Accepts]: Start accepts. Automaton has 2707 states and 4878 transitions. Word has length 113 [2021-11-07 08:42:49,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:42:49,855 INFO L470 AbstractCegarLoop]: Abstraction has 2707 states and 4878 transitions. [2021-11-07 08:42:49,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:42:49,855 INFO L276 IsEmpty]: Start isEmpty. Operand 2707 states and 4878 transitions. [2021-11-07 08:42:49,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-07 08:42:49,862 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:42:49,862 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, 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 08:42:49,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-07 08:42:49,862 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:42:49,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:42:49,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1563344965, now seen corresponding path program 1 times [2021-11-07 08:42:49,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:42:49,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299018638] [2021-11-07 08:42:49,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:42:49,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:42:49,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:42:49,939 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 08:42:49,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:42:49,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299018638] [2021-11-07 08:42:49,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299018638] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:42:49,939 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:42:49,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:42:49,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991366408] [2021-11-07 08:42:49,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:42:49,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:42:49,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:42:49,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:42:49,941 INFO L87 Difference]: Start difference. First operand 2707 states and 4878 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states 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 08:42:50,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:42:50,303 INFO L93 Difference]: Finished difference Result 7448 states and 13445 transitions. [2021-11-07 08:42:50,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:42:50,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 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 114 [2021-11-07 08:42:50,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:42:50,341 INFO L225 Difference]: With dead ends: 7448 [2021-11-07 08:42:50,341 INFO L226 Difference]: Without dead ends: 4876 [2021-11-07 08:42:50,347 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 08:42:50,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4876 states. [2021-11-07 08:42:50,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4876 to 4253. [2021-11-07 08:42:50,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4253 states, 4249 states have (on average 1.8166627441751) internal successors, (7719), 4252 states have internal predecessors, (7719), 0 states have call successors, (0), 0 states 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 08:42:50,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4253 states to 4253 states and 7719 transitions. [2021-11-07 08:42:50,682 INFO L78 Accepts]: Start accepts. Automaton has 4253 states and 7719 transitions. Word has length 114 [2021-11-07 08:42:50,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:42:50,682 INFO L470 AbstractCegarLoop]: Abstraction has 4253 states and 7719 transitions. [2021-11-07 08:42:50,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states 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 08:42:50,684 INFO L276 IsEmpty]: Start isEmpty. Operand 4253 states and 7719 transitions. [2021-11-07 08:42:50,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-07 08:42:50,696 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:42:50,697 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, 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 08:42:50,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-07 08:42:50,697 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:42:50,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:42:50,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1791660436, now seen corresponding path program 1 times [2021-11-07 08:42:50,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:42:50,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901435169] [2021-11-07 08:42:50,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:42:50,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:42:50,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:42:50,785 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 08:42:50,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:42:50,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901435169] [2021-11-07 08:42:50,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901435169] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:42:50,786 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:42:50,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:42:50,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517146082] [2021-11-07 08:42:50,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:42:50,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:42:50,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:42:50,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:42:50,791 INFO L87 Difference]: Start difference. First operand 4253 states and 7719 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states 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 08:42:51,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:42:51,232 INFO L93 Difference]: Finished difference Result 11802 states and 21451 transitions. [2021-11-07 08:42:51,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:42:51,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2021-11-07 08:42:51,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:42:51,258 INFO L225 Difference]: With dead ends: 11802 [2021-11-07 08:42:51,258 INFO L226 Difference]: Without dead ends: 7718 [2021-11-07 08:42:51,267 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 08:42:51,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7718 states. [2021-11-07 08:42:51,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7718 to 7095. [2021-11-07 08:42:51,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7095 states, 7091 states have (on average 1.824284304047384) internal successors, (12936), 7094 states have internal predecessors, (12936), 0 states have call successors, (0), 0 states 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 08:42:51,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7095 states to 7095 states and 12936 transitions. [2021-11-07 08:42:51,857 INFO L78 Accepts]: Start accepts. Automaton has 7095 states and 12936 transitions. Word has length 115 [2021-11-07 08:42:51,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:42:51,858 INFO L470 AbstractCegarLoop]: Abstraction has 7095 states and 12936 transitions. [2021-11-07 08:42:51,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states 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 08:42:51,858 INFO L276 IsEmpty]: Start isEmpty. Operand 7095 states and 12936 transitions. [2021-11-07 08:42:51,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-07 08:42:51,881 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:42:51,881 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, 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 08:42:51,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-07 08:42:51,882 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:42:51,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:42:51,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1624681164, now seen corresponding path program 1 times [2021-11-07 08:42:51,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:42:51,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733549610] [2021-11-07 08:42:51,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:42:51,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:42:51,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:42:51,980 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 08:42:51,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:42:51,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733549610] [2021-11-07 08:42:51,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733549610] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:42:51,981 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:42:51,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:42:51,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934579935] [2021-11-07 08:42:51,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:42:51,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:42:51,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:42:51,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:42:51,983 INFO L87 Difference]: Start difference. First operand 7095 states and 12936 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 08:42:52,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:42:52,672 INFO L93 Difference]: Finished difference Result 20786 states and 37944 transitions. [2021-11-07 08:42:52,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:42:52,673 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2021-11-07 08:42:52,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:42:52,716 INFO L225 Difference]: With dead ends: 20786 [2021-11-07 08:42:52,716 INFO L226 Difference]: Without dead ends: 13864 [2021-11-07 08:42:52,731 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 08:42:52,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13864 states. [2021-11-07 08:42:53,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13864 to 13241. [2021-11-07 08:42:53,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13241 states, 13237 states have (on average 1.8282843544609806) internal successors, (24201), 13240 states have internal predecessors, (24201), 0 states have call successors, (0), 0 states 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 08:42:53,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13241 states to 13241 states and 24201 transitions. [2021-11-07 08:42:53,576 INFO L78 Accepts]: Start accepts. Automaton has 13241 states and 24201 transitions. Word has length 116 [2021-11-07 08:42:53,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:42:53,576 INFO L470 AbstractCegarLoop]: Abstraction has 13241 states and 24201 transitions. [2021-11-07 08:42:53,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 08:42:53,577 INFO L276 IsEmpty]: Start isEmpty. Operand 13241 states and 24201 transitions. [2021-11-07 08:42:53,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-07 08:42:53,611 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:42:53,611 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, 1, 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 08:42:53,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-07 08:42:53,612 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:42:53,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:42:53,612 INFO L85 PathProgramCache]: Analyzing trace with hash 772703067, now seen corresponding path program 1 times [2021-11-07 08:42:53,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:42:53,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450201588] [2021-11-07 08:42:53,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:42:53,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:42:53,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:42:53,770 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 08:42:53,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:42:53,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450201588] [2021-11-07 08:42:53,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450201588] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:42:53,777 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:42:53,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:42:53,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617071429] [2021-11-07 08:42:53,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:42:53,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:42:53,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:42:53,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:42:53,779 INFO L87 Difference]: Start difference. First operand 13241 states and 24201 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states 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 08:42:55,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:42:55,451 INFO L93 Difference]: Finished difference Result 38926 states and 71214 transitions. [2021-11-07 08:42:55,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:42:55,451 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 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 117 [2021-11-07 08:42:55,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:42:55,547 INFO L225 Difference]: With dead ends: 38926 [2021-11-07 08:42:55,548 INFO L226 Difference]: Without dead ends: 25866 [2021-11-07 08:42:55,575 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 08:42:55,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25866 states. [2021-11-07 08:42:57,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25866 to 25243. [2021-11-07 08:42:57,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25243 states, 25239 states have (on average 1.8299457189270574) internal successors, (46186), 25242 states have internal predecessors, (46186), 0 states have call successors, (0), 0 states 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 08:42:57,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25243 states to 25243 states and 46186 transitions. [2021-11-07 08:42:57,335 INFO L78 Accepts]: Start accepts. Automaton has 25243 states and 46186 transitions. Word has length 117 [2021-11-07 08:42:57,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:42:57,336 INFO L470 AbstractCegarLoop]: Abstraction has 25243 states and 46186 transitions. [2021-11-07 08:42:57,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states 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 08:42:57,336 INFO L276 IsEmpty]: Start isEmpty. Operand 25243 states and 46186 transitions. [2021-11-07 08:42:57,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-07 08:42:57,398 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:42:57,399 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, 1, 1, 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 08:42:57,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-07 08:42:57,399 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:42:57,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:42:57,400 INFO L85 PathProgramCache]: Analyzing trace with hash -561568114, now seen corresponding path program 1 times [2021-11-07 08:42:57,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:42:57,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611058606] [2021-11-07 08:42:57,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:42:57,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:42:57,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:42:57,482 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 08:42:57,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:42:57,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611058606] [2021-11-07 08:42:57,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611058606] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:42:57,483 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:42:57,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:42:57,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825652711] [2021-11-07 08:42:57,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:42:57,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:42:57,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:42:57,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:42:57,485 INFO L87 Difference]: Start difference. First operand 25243 states and 46186 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states 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 08:42:59,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:42:59,528 INFO L93 Difference]: Finished difference Result 69571 states and 126905 transitions. [2021-11-07 08:42:59,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:42:59,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2021-11-07 08:42:59,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:42:59,698 INFO L225 Difference]: With dead ends: 69571 [2021-11-07 08:42:59,698 INFO L226 Difference]: Without dead ends: 44556 [2021-11-07 08:42:59,733 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 08:42:59,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44556 states. [2021-11-07 08:43:01,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44556 to 43933. [2021-11-07 08:43:02,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43933 states, 43929 states have (on average 1.819185503881263) internal successors, (79915), 43932 states have internal predecessors, (79915), 0 states have call successors, (0), 0 states 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 08:43:02,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43933 states to 43933 states and 79915 transitions. [2021-11-07 08:43:02,127 INFO L78 Accepts]: Start accepts. Automaton has 43933 states and 79915 transitions. Word has length 118 [2021-11-07 08:43:02,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:43:02,128 INFO L470 AbstractCegarLoop]: Abstraction has 43933 states and 79915 transitions. [2021-11-07 08:43:02,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states 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 08:43:02,128 INFO L276 IsEmpty]: Start isEmpty. Operand 43933 states and 79915 transitions. [2021-11-07 08:43:02,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-07 08:43:02,208 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:43:02,208 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, 1, 1, 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 08:43:02,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-07 08:43:02,209 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:43:02,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:43:02,210 INFO L85 PathProgramCache]: Analyzing trace with hash 693977506, now seen corresponding path program 1 times [2021-11-07 08:43:02,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:43:02,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051825194] [2021-11-07 08:43:02,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:43:02,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:43:02,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:43:02,558 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 08:43:02,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:43:02,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051825194] [2021-11-07 08:43:02,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051825194] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:43:02,559 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:43:02,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 08:43:02,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663518270] [2021-11-07 08:43:02,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:43:02,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:43:02,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:43:02,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:43:02,563 INFO L87 Difference]: Start difference. First operand 43933 states and 79915 transitions. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states 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 08:43:06,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:43:06,256 INFO L93 Difference]: Finished difference Result 129416 states and 235394 transitions. [2021-11-07 08:43:06,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 08:43:06,257 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 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 119 [2021-11-07 08:43:06,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:43:06,501 INFO L225 Difference]: With dead ends: 129416 [2021-11-07 08:43:06,501 INFO L226 Difference]: Without dead ends: 85779 [2021-11-07 08:43:06,571 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 08:43:06,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85779 states. [2021-11-07 08:43:09,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85779 to 43933. [2021-11-07 08:43:09,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43933 states, 43929 states have (on average 1.8133123904482233) internal successors, (79657), 43932 states have internal predecessors, (79657), 0 states have call successors, (0), 0 states 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 08:43:09,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43933 states to 43933 states and 79657 transitions. [2021-11-07 08:43:09,638 INFO L78 Accepts]: Start accepts. Automaton has 43933 states and 79657 transitions. Word has length 119 [2021-11-07 08:43:09,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:43:09,639 INFO L470 AbstractCegarLoop]: Abstraction has 43933 states and 79657 transitions. [2021-11-07 08:43:09,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states 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 08:43:09,639 INFO L276 IsEmpty]: Start isEmpty. Operand 43933 states and 79657 transitions. [2021-11-07 08:43:09,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-07 08:43:09,692 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:43:09,693 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, 1, 1, 1, 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 08:43:09,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-07 08:43:09,694 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:43:09,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:43:09,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1481581120, now seen corresponding path program 2 times [2021-11-07 08:43:09,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:43:09,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146665783] [2021-11-07 08:43:09,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:43:09,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:43:09,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:43:09,797 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 08:43:09,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:43:09,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146665783] [2021-11-07 08:43:09,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146665783] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:43:09,798 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:43:09,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 08:43:09,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972304726] [2021-11-07 08:43:09,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:43:09,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:43:09,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:43:09,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:43:09,801 INFO L87 Difference]: Start difference. First operand 43933 states and 79657 transitions. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 08:43:11,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:43:11,606 INFO L93 Difference]: Finished difference Result 88187 states and 159859 transitions. [2021-11-07 08:43:11,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:43:11,607 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2021-11-07 08:43:11,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:43:11,709 INFO L225 Difference]: With dead ends: 88187 [2021-11-07 08:43:11,709 INFO L226 Difference]: Without dead ends: 44556 [2021-11-07 08:43:11,752 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 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 08:43:11,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44556 states. [2021-11-07 08:43:13,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44556 to 43933. [2021-11-07 08:43:14,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43933 states, 43929 states have (on average 1.8103985977372579) internal successors, (79529), 43932 states have internal predecessors, (79529), 0 states have call successors, (0), 0 states 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 08:43:14,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43933 states to 43933 states and 79529 transitions. [2021-11-07 08:43:14,120 INFO L78 Accepts]: Start accepts. Automaton has 43933 states and 79529 transitions. Word has length 119 [2021-11-07 08:43:14,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:43:14,120 INFO L470 AbstractCegarLoop]: Abstraction has 43933 states and 79529 transitions. [2021-11-07 08:43:14,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 08:43:14,121 INFO L276 IsEmpty]: Start isEmpty. Operand 43933 states and 79529 transitions. [2021-11-07 08:43:14,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-07 08:43:14,178 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:43:14,179 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, 1, 1, 1, 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 08:43:14,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-07 08:43:14,179 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:43:14,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:43:14,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1304860499, now seen corresponding path program 1 times [2021-11-07 08:43:14,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:43:14,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749929414] [2021-11-07 08:43:14,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:43:14,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:43:14,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:43:14,256 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 08:43:14,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:43:14,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749929414] [2021-11-07 08:43:14,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749929414] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:43:14,257 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:43:14,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:43:14,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166438010] [2021-11-07 08:43:14,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:43:14,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:43:14,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:43:14,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:43:14,259 INFO L87 Difference]: Start difference. First operand 43933 states and 79529 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 08:43:17,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:43:17,570 INFO L93 Difference]: Finished difference Result 123301 states and 223037 transitions. [2021-11-07 08:43:17,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:43:17,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2021-11-07 08:43:17,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:43:17,719 INFO L225 Difference]: With dead ends: 123301 [2021-11-07 08:43:17,719 INFO L226 Difference]: Without dead ends: 79630 [2021-11-07 08:43:17,758 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 08:43:17,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79630 states. [2021-11-07 08:43:21,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79630 to 79007. [2021-11-07 08:43:21,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79007 states, 79003 states have (on average 1.8054251104388441) internal successors, (142634), 79006 states have internal predecessors, (142634), 0 states have call successors, (0), 0 states 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 08:43:21,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79007 states to 79007 states and 142634 transitions. [2021-11-07 08:43:21,738 INFO L78 Accepts]: Start accepts. Automaton has 79007 states and 142634 transitions. Word has length 119 [2021-11-07 08:43:21,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:43:21,738 INFO L470 AbstractCegarLoop]: Abstraction has 79007 states and 142634 transitions. [2021-11-07 08:43:21,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 08:43:21,739 INFO L276 IsEmpty]: Start isEmpty. Operand 79007 states and 142634 transitions. [2021-11-07 08:43:21,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-07 08:43:21,793 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:43:21,794 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, 1, 1, 1, 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 08:43:21,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-07 08:43:21,794 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:43:21,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:43:21,795 INFO L85 PathProgramCache]: Analyzing trace with hash -754966778, now seen corresponding path program 1 times [2021-11-07 08:43:21,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:43:21,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587158983] [2021-11-07 08:43:21,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:43:21,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:43:21,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:43:21,903 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 08:43:21,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:43:21,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587158983] [2021-11-07 08:43:21,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587158983] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:43:21,904 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:43:21,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 08:43:21,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584883946] [2021-11-07 08:43:21,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 08:43:21,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:43:21,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:43:21,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:43:21,906 INFO L87 Difference]: Start difference. First operand 79007 states and 142634 transitions. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states 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 08:43:28,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:43:28,527 INFO L93 Difference]: Finished difference Result 159982 states and 288616 transitions. [2021-11-07 08:43:28,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 08:43:28,528 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 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 120 [2021-11-07 08:43:28,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:43:28,885 INFO L225 Difference]: With dead ends: 159982 [2021-11-07 08:43:28,885 INFO L226 Difference]: Without dead ends: 159377 [2021-11-07 08:43:28,915 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 08:43:29,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159377 states.