./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl/s3_srvr.blast.03.i.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15bd907a-afe0-487d-a60d-5853a45f0743/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15bd907a-afe0-487d-a60d-5853a45f0743/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15bd907a-afe0-487d-a60d-5853a45f0743/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15bd907a-afe0-487d-a60d-5853a45f0743/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.03.i.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15bd907a-afe0-487d-a60d-5853a45f0743/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15bd907a-afe0-487d-a60d-5853a45f0743/bin/uautomizer-GMMbpWq8iD --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 c3fe517c51c5e8fb31577c2325f977891c14909f163a953939dc0a15f16ec6d9 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15bd907a-afe0-487d-a60d-5853a45f0743/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15bd907a-afe0-487d-a60d-5853a45f0743/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15bd907a-afe0-487d-a60d-5853a45f0743/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15bd907a-afe0-487d-a60d-5853a45f0743/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.03.i.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15bd907a-afe0-487d-a60d-5853a45f0743/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15bd907a-afe0-487d-a60d-5853a45f0743/bin/uautomizer-GMMbpWq8iD --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 c3fe517c51c5e8fb31577c2325f977891c14909f163a953939dc0a15f16ec6d9 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:55:33,884 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:55:33,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:55:33,962 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:55:33,965 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:55:33,972 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:55:33,975 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:55:33,980 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:55:33,983 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:55:33,992 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:55:33,994 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:55:33,996 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:55:33,997 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:55:34,000 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:55:34,002 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:55:34,010 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:55:34,012 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:55:34,013 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:55:34,019 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:55:34,025 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:55:34,030 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:55:34,032 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:55:34,036 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:55:34,037 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:55:34,046 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:55:34,046 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:55:34,047 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:55:34,050 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:55:34,050 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:55:34,052 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:55:34,053 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:55:34,054 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:55:34,056 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:55:34,057 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:55:34,059 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:55:34,060 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:55:34,061 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:55:34,061 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:55:34,061 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:55:34,062 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:55:34,063 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:55:34,065 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15bd907a-afe0-487d-a60d-5853a45f0743/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 23:55:34,118 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:55:34,118 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:55:34,119 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:55:34,119 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:55:34,128 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:55:34,128 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:55:34,128 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:55:34,129 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:55:34,129 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:55:34,129 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:55:34,130 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:55:34,131 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:55:34,131 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:55:34,131 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:55:34,132 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:55:34,132 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:55:34,132 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:55:34,132 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:55:34,133 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:55:34,133 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:55:34,133 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:55:34,133 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:55:34,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:55:34,134 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:55:34,134 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:55:34,135 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:55:34,135 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:55:34,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:55:34,135 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:55:34,137 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:55:34,137 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:55:34,138 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:55:34,138 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_15bd907a-afe0-487d-a60d-5853a45f0743/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15bd907a-afe0-487d-a60d-5853a45f0743/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3fe517c51c5e8fb31577c2325f977891c14909f163a953939dc0a15f16ec6d9 [2021-10-28 23:55:34,448 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:55:34,482 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:55:34,485 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:55:34,486 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:55:34,488 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:55:34,489 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15bd907a-afe0-487d-a60d-5853a45f0743/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/openssl/s3_srvr.blast.03.i.cil.c [2021-10-28 23:55:34,561 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15bd907a-afe0-487d-a60d-5853a45f0743/bin/uautomizer-GMMbpWq8iD/data/8cb589ceb/3511b9fe2bf04d6686227d7ae9fcaa84/FLAG4971f424b [2021-10-28 23:55:35,256 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:55:35,258 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15bd907a-afe0-487d-a60d-5853a45f0743/sv-benchmarks/c/openssl/s3_srvr.blast.03.i.cil.c [2021-10-28 23:55:35,290 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15bd907a-afe0-487d-a60d-5853a45f0743/bin/uautomizer-GMMbpWq8iD/data/8cb589ceb/3511b9fe2bf04d6686227d7ae9fcaa84/FLAG4971f424b [2021-10-28 23:55:35,422 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15bd907a-afe0-487d-a60d-5853a45f0743/bin/uautomizer-GMMbpWq8iD/data/8cb589ceb/3511b9fe2bf04d6686227d7ae9fcaa84 [2021-10-28 23:55:35,424 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:55:35,425 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:55:35,427 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:55:35,427 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:55:35,431 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:55:35,432 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:55:35" (1/1) ... [2021-10-28 23:55:35,433 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79331feb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:55:35, skipping insertion in model container [2021-10-28 23:55:35,433 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:55:35" (1/1) ... [2021-10-28 23:55:35,440 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:55:35,501 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:55:35,922 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_15bd907a-afe0-487d-a60d-5853a45f0743/sv-benchmarks/c/openssl/s3_srvr.blast.03.i.cil.c[72493,72506] [2021-10-28 23:55:35,934 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:55:35,951 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:55:36,160 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_15bd907a-afe0-487d-a60d-5853a45f0743/sv-benchmarks/c/openssl/s3_srvr.blast.03.i.cil.c[72493,72506] [2021-10-28 23:55:36,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:55:36,209 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:55:36,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:55:36 WrapperNode [2021-10-28 23:55:36,211 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:55:36,213 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:55:36,213 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:55:36,213 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:55:36,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:55:36" (1/1) ... [2021-10-28 23:55:36,279 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:55:36" (1/1) ... [2021-10-28 23:55:36,338 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:55:36,339 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:55:36,339 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:55:36,339 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:55:36,349 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:55:36" (1/1) ... [2021-10-28 23:55:36,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:55:36" (1/1) ... [2021-10-28 23:55:36,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:55:36" (1/1) ... [2021-10-28 23:55:36,360 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:55:36" (1/1) ... [2021-10-28 23:55:36,407 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:55:36" (1/1) ... [2021-10-28 23:55:36,416 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:55:36" (1/1) ... [2021-10-28 23:55:36,436 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:55:36" (1/1) ... [2021-10-28 23:55:36,454 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:55:36,455 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:55:36,455 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:55:36,455 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:55:36,456 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:55:36" (1/1) ... [2021-10-28 23:55:36,466 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:55:36,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15bd907a-afe0-487d-a60d-5853a45f0743/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:55:36,511 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15bd907a-afe0-487d-a60d-5853a45f0743/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:55:36,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15bd907a-afe0-487d-a60d-5853a45f0743/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:55:36,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 23:55:36,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:55:36,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 23:55:36,587 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 23:55:36,587 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 23:55:36,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:55:36,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 23:55:36,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:55:36,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:55:36,869 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-28 23:55:39,971 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-10-28 23:55:39,972 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-10-28 23:55:39,983 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:55:39,983 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-28 23:55:39,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:55:39 BoogieIcfgContainer [2021-10-28 23:55:39,986 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:55:39,989 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:55:39,989 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:55:39,993 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:55:39,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:55:35" (1/3) ... [2021-10-28 23:55:39,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1accbb96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:55:39, skipping insertion in model container [2021-10-28 23:55:39,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:55:36" (2/3) ... [2021-10-28 23:55:39,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1accbb96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:55:39, skipping insertion in model container [2021-10-28 23:55:39,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:55:39" (3/3) ... [2021-10-28 23:55:39,997 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.03.i.cil.c [2021-10-28 23:55:40,004 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:55:40,004 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 23:55:40,054 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:55:40,061 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 [2021-10-28 23:55:40,061 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 23:55:40,086 INFO L276 IsEmpty]: Start isEmpty. Operand has 145 states, 143 states have (on average 1.7062937062937062) internal successors, (244), 144 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:55:40,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-28 23:55:40,105 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:55:40,106 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] [2021-10-28 23:55:40,107 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:55:40,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:55:40,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1430119920, now seen corresponding path program 1 times [2021-10-28 23:55:40,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:55:40,143 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300609173] [2021-10-28 23:55:40,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:55:40,144 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:55:40,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:40,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:55:40,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:55:40,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300609173] [2021-10-28 23:55:40,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300609173] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:55:40,803 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:55:40,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:55:40,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385172086] [2021-10-28 23:55:40,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:55:40,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:55:40,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:55:40,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:55:40,849 INFO L87 Difference]: Start difference. First operand has 145 states, 143 states have (on average 1.7062937062937062) internal successors, (244), 144 states have internal predecessors, (244), 0 states have call successors, (0), 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 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:55:43,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:55:43,513 INFO L93 Difference]: Finished difference Result 315 states and 530 transitions. [2021-10-28 23:55:43,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:55:43,515 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2021-10-28 23:55:43,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:55:43,531 INFO L225 Difference]: With dead ends: 315 [2021-10-28 23:55:43,531 INFO L226 Difference]: Without dead ends: 160 [2021-10-28 23:55:43,536 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:55:43,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-10-28 23:55:43,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 143. [2021-10-28 23:55:43,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.5422535211267605) internal successors, (219), 142 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:55:43,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 219 transitions. [2021-10-28 23:55:43,623 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 219 transitions. Word has length 47 [2021-10-28 23:55:43,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:55:43,624 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 219 transitions. [2021-10-28 23:55:43,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:55:43,625 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 219 transitions. [2021-10-28 23:55:43,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-28 23:55:43,637 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:55:43,638 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-10-28 23:55:43,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:55:43,639 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:55:43,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:55:43,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1036819743, now seen corresponding path program 1 times [2021-10-28 23:55:43,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:55:43,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206483781] [2021-10-28 23:55:43,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:55:43,647 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:55:43,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:43,866 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:55:43,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:55:43,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206483781] [2021-10-28 23:55:43,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206483781] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:55:43,868 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:55:43,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:55:43,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106659816] [2021-10-28 23:55:43,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:55:43,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:55:43,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:55:43,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:55:43,877 INFO L87 Difference]: Start difference. First operand 143 states and 219 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:55:46,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:55:46,332 INFO L93 Difference]: Finished difference Result 282 states and 426 transitions. [2021-10-28 23:55:46,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:55:46,334 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-10-28 23:55:46,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:55:46,336 INFO L225 Difference]: With dead ends: 282 [2021-10-28 23:55:46,336 INFO L226 Difference]: Without dead ends: 160 [2021-10-28 23:55:46,338 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:55:46,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-10-28 23:55:46,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 143. [2021-10-28 23:55:46,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.5352112676056338) internal successors, (218), 142 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:55:46,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 218 transitions. [2021-10-28 23:55:46,359 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 218 transitions. Word has length 60 [2021-10-28 23:55:46,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:55:46,359 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 218 transitions. [2021-10-28 23:55:46,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:55:46,360 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 218 transitions. [2021-10-28 23:55:46,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-10-28 23:55:46,362 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:55:46,362 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-10-28 23:55:46,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:55:46,362 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:55:46,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:55:46,363 INFO L85 PathProgramCache]: Analyzing trace with hash 622344944, now seen corresponding path program 1 times [2021-10-28 23:55:46,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:55:46,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722993519] [2021-10-28 23:55:46,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:55:46,364 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:55:46,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:46,457 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:55:46,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:55:46,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722993519] [2021-10-28 23:55:46,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722993519] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:55:46,458 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:55:46,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:55:46,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819159090] [2021-10-28 23:55:46,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:55:46,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:55:46,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:55:46,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:55:46,461 INFO L87 Difference]: Start difference. First operand 143 states and 218 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:55:48,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:55:48,961 INFO L93 Difference]: Finished difference Result 281 states and 424 transitions. [2021-10-28 23:55:48,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:55:48,962 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-10-28 23:55:48,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:55:48,964 INFO L225 Difference]: With dead ends: 281 [2021-10-28 23:55:48,964 INFO L226 Difference]: Without dead ends: 159 [2021-10-28 23:55:48,966 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:55:48,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-10-28 23:55:48,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 143. [2021-10-28 23:55:48,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.528169014084507) internal successors, (217), 142 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:55:48,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 217 transitions. [2021-10-28 23:55:48,979 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 217 transitions. Word has length 61 [2021-10-28 23:55:48,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:55:48,980 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 217 transitions. [2021-10-28 23:55:48,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:55:48,981 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 217 transitions. [2021-10-28 23:55:48,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-10-28 23:55:48,983 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:55:48,983 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-10-28 23:55:48,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 23:55:48,984 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:55:48,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:55:48,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1460355716, now seen corresponding path program 1 times [2021-10-28 23:55:48,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:55:48,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572139994] [2021-10-28 23:55:48,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:55:48,986 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:55:49,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:49,080 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:55:49,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:55:49,081 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572139994] [2021-10-28 23:55:49,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572139994] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:55:49,081 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:55:49,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:55:49,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847528147] [2021-10-28 23:55:49,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:55:49,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:55:49,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:55:49,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:55:49,084 INFO L87 Difference]: Start difference. First operand 143 states and 217 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:55:51,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:55:51,532 INFO L93 Difference]: Finished difference Result 281 states and 423 transitions. [2021-10-28 23:55:51,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:55:51,533 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-10-28 23:55:51,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:55:51,535 INFO L225 Difference]: With dead ends: 281 [2021-10-28 23:55:51,535 INFO L226 Difference]: Without dead ends: 159 [2021-10-28 23:55:51,536 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:55:51,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-10-28 23:55:51,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 143. [2021-10-28 23:55:51,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.5211267605633803) internal successors, (216), 142 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:55:51,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 216 transitions. [2021-10-28 23:55:51,548 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 216 transitions. Word has length 61 [2021-10-28 23:55:51,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:55:51,549 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 216 transitions. [2021-10-28 23:55:51,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:55:51,550 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 216 transitions. [2021-10-28 23:55:51,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-10-28 23:55:51,552 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:55:51,552 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-10-28 23:55:51,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 23:55:51,553 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:55:51,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:55:51,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1380080741, now seen corresponding path program 1 times [2021-10-28 23:55:51,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:55:51,555 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410271580] [2021-10-28 23:55:51,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:55:51,555 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:55:51,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:51,705 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:55:51,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:55:51,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410271580] [2021-10-28 23:55:51,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410271580] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:55:51,706 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:55:51,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:55:51,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760667953] [2021-10-28 23:55:51,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:55:51,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:55:51,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:55:51,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:55:51,708 INFO L87 Difference]: Start difference. First operand 143 states and 216 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:55:52,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:55:52,520 INFO L93 Difference]: Finished difference Result 280 states and 421 transitions. [2021-10-28 23:55:52,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:55:52,521 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-10-28 23:55:52,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:55:52,524 INFO L225 Difference]: With dead ends: 280 [2021-10-28 23:55:52,524 INFO L226 Difference]: Without dead ends: 158 [2021-10-28 23:55:52,533 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:55:52,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-10-28 23:55:52,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 143. [2021-10-28 23:55:52,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.5140845070422535) internal successors, (215), 142 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:55:52,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 215 transitions. [2021-10-28 23:55:52,555 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 215 transitions. Word has length 61 [2021-10-28 23:55:52,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:55:52,556 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 215 transitions. [2021-10-28 23:55:52,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:55:52,557 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 215 transitions. [2021-10-28 23:55:52,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-10-28 23:55:52,559 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:55:52,560 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-10-28 23:55:52,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 23:55:52,560 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:55:52,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:55:52,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1965538395, now seen corresponding path program 1 times [2021-10-28 23:55:52,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:55:52,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253193280] [2021-10-28 23:55:52,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:55:52,563 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:55:52,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:52,715 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:55:52,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:55:52,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253193280] [2021-10-28 23:55:52,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253193280] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:55:52,717 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:55:52,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:55:52,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894287659] [2021-10-28 23:55:52,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:55:52,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:55:52,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:55:52,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:55:52,728 INFO L87 Difference]: Start difference. First operand 143 states and 215 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:55:55,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:55:55,155 INFO L93 Difference]: Finished difference Result 278 states and 418 transitions. [2021-10-28 23:55:55,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:55:55,156 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-10-28 23:55:55,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:55:55,158 INFO L225 Difference]: With dead ends: 278 [2021-10-28 23:55:55,158 INFO L226 Difference]: Without dead ends: 156 [2021-10-28 23:55:55,159 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:55:55,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-10-28 23:55:55,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 143. [2021-10-28 23:55:55,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.5070422535211268) internal successors, (214), 142 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:55:55,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 214 transitions. [2021-10-28 23:55:55,168 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 214 transitions. Word has length 61 [2021-10-28 23:55:55,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:55:55,169 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 214 transitions. [2021-10-28 23:55:55,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:55:55,169 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 214 transitions. [2021-10-28 23:55:55,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-28 23:55:55,171 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:55:55,171 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-10-28 23:55:55,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 23:55:55,172 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:55:55,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:55:55,172 INFO L85 PathProgramCache]: Analyzing trace with hash -96300664, now seen corresponding path program 1 times [2021-10-28 23:55:55,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:55:55,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851175958] [2021-10-28 23:55:55,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:55:55,173 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:55:55,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:55,286 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:55:55,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:55:55,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851175958] [2021-10-28 23:55:55,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851175958] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:55:55,288 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:55:55,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:55:55,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874354777] [2021-10-28 23:55:55,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:55:55,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:55:55,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:55:55,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:55:55,292 INFO L87 Difference]: Start difference. First operand 143 states and 214 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:55:57,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:55:57,717 INFO L93 Difference]: Finished difference Result 278 states and 417 transitions. [2021-10-28 23:55:57,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:55:57,718 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-28 23:55:57,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:55:57,719 INFO L225 Difference]: With dead ends: 278 [2021-10-28 23:55:57,719 INFO L226 Difference]: Without dead ends: 156 [2021-10-28 23:55:57,720 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:55:57,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-10-28 23:55:57,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 143. [2021-10-28 23:55:57,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.5) internal successors, (213), 142 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:55:57,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 213 transitions. [2021-10-28 23:55:57,727 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 213 transitions. Word has length 62 [2021-10-28 23:55:57,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:55:57,727 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 213 transitions. [2021-10-28 23:55:57,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:55:57,728 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 213 transitions. [2021-10-28 23:55:57,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-10-28 23:55:57,729 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:55:57,729 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-10-28 23:55:57,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 23:55:57,730 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:55:57,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:55:57,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1146804983, now seen corresponding path program 1 times [2021-10-28 23:55:57,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:55:57,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928585530] [2021-10-28 23:55:57,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:55:57,732 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:55:57,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:55:57,818 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:55:57,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:55:57,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928585530] [2021-10-28 23:55:57,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928585530] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:55:57,820 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:55:57,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:55:57,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289873262] [2021-10-28 23:55:57,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:55:57,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:55:57,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:55:57,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:55:57,822 INFO L87 Difference]: Start difference. First operand 143 states and 213 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 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) [2021-10-28 23:56:00,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:56:00,263 INFO L93 Difference]: Finished difference Result 278 states and 416 transitions. [2021-10-28 23:56:00,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:56:00,263 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 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 [2021-10-28 23:56:00,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:56:00,264 INFO L225 Difference]: With dead ends: 278 [2021-10-28 23:56:00,265 INFO L226 Difference]: Without dead ends: 156 [2021-10-28 23:56:00,265 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:56:00,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-10-28 23:56:00,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 143. [2021-10-28 23:56:00,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.4929577464788732) internal successors, (212), 142 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:00,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 212 transitions. [2021-10-28 23:56:00,272 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 212 transitions. Word has length 63 [2021-10-28 23:56:00,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:56:00,273 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 212 transitions. [2021-10-28 23:56:00,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 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) [2021-10-28 23:56:00,273 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 212 transitions. [2021-10-28 23:56:00,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-10-28 23:56:00,275 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:56:00,275 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:56:00,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 23:56:00,275 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:56:00,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:56:00,276 INFO L85 PathProgramCache]: Analyzing trace with hash 608502701, now seen corresponding path program 1 times [2021-10-28 23:56:00,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:56:00,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645335514] [2021-10-28 23:56:00,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:56:00,277 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:56:00,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:56:00,361 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:56:00,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:56:00,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645335514] [2021-10-28 23:56:00,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645335514] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:56:00,362 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:56:00,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:56:00,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959808878] [2021-10-28 23:56:00,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:56:00,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:56:00,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:56:00,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:56:00,364 INFO L87 Difference]: Start difference. First operand 143 states and 212 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 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) [2021-10-28 23:56:02,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:56:02,780 INFO L93 Difference]: Finished difference Result 268 states and 402 transitions. [2021-10-28 23:56:02,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:56:02,782 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 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 [2021-10-28 23:56:02,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:56:02,784 INFO L225 Difference]: With dead ends: 268 [2021-10-28 23:56:02,784 INFO L226 Difference]: Without dead ends: 146 [2021-10-28 23:56:02,784 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:56:02,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-10-28 23:56:02,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 143. [2021-10-28 23:56:02,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.4859154929577465) internal successors, (211), 142 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:02,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 211 transitions. [2021-10-28 23:56:02,791 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 211 transitions. Word has length 64 [2021-10-28 23:56:02,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:56:02,791 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 211 transitions. [2021-10-28 23:56:02,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 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) [2021-10-28 23:56:02,791 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 211 transitions. [2021-10-28 23:56:02,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-10-28 23:56:02,792 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:56:02,794 INFO L513 BasicCegarLoop]: trace histogram [2, 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] [2021-10-28 23:56:02,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 23:56:02,794 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:56:02,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:56:02,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1008654101, now seen corresponding path program 1 times [2021-10-28 23:56:02,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:56:02,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492445422] [2021-10-28 23:56:02,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:56:02,796 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:56:02,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:56:02,934 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:56:02,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:56:02,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492445422] [2021-10-28 23:56:02,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492445422] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:56:02,935 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:56:02,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:56:02,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76531279] [2021-10-28 23:56:02,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:56:02,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:56:02,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:56:02,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:56:02,940 INFO L87 Difference]: Start difference. First operand 143 states and 211 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 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) [2021-10-28 23:56:05,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:56:05,371 INFO L93 Difference]: Finished difference Result 308 states and 463 transitions. [2021-10-28 23:56:05,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:56:05,371 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 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 [2021-10-28 23:56:05,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:56:05,373 INFO L225 Difference]: With dead ends: 308 [2021-10-28 23:56:05,374 INFO L226 Difference]: Without dead ends: 186 [2021-10-28 23:56:05,374 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:56:05,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-10-28 23:56:05,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 165. [2021-10-28 23:56:05,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.5182926829268293) internal successors, (249), 164 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:05,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 249 transitions. [2021-10-28 23:56:05,383 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 249 transitions. Word has length 64 [2021-10-28 23:56:05,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:56:05,383 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 249 transitions. [2021-10-28 23:56:05,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 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) [2021-10-28 23:56:05,384 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 249 transitions. [2021-10-28 23:56:05,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-28 23:56:05,385 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:56:05,385 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:56:05,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 23:56:05,386 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:56:05,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:56:05,387 INFO L85 PathProgramCache]: Analyzing trace with hash -221679590, now seen corresponding path program 1 times [2021-10-28 23:56:05,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:56:05,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128825426] [2021-10-28 23:56:05,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:56:05,388 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:56:05,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:56:05,508 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:56:05,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:56:05,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128825426] [2021-10-28 23:56:05,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128825426] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:56:05,509 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:56:05,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:56:05,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779934338] [2021-10-28 23:56:05,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:56:05,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:56:05,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:56:05,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:56:05,513 INFO L87 Difference]: Start difference. First operand 165 states and 249 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:07,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:56:07,937 INFO L93 Difference]: Finished difference Result 330 states and 500 transitions. [2021-10-28 23:56:07,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:56:07,938 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-10-28 23:56:07,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:56:07,940 INFO L225 Difference]: With dead ends: 330 [2021-10-28 23:56:07,940 INFO L226 Difference]: Without dead ends: 186 [2021-10-28 23:56:07,941 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:56:07,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-10-28 23:56:07,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 165. [2021-10-28 23:56:07,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.5121951219512195) internal successors, (248), 164 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:07,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 248 transitions. [2021-10-28 23:56:07,948 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 248 transitions. Word has length 77 [2021-10-28 23:56:07,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:56:07,949 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 248 transitions. [2021-10-28 23:56:07,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:07,949 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 248 transitions. [2021-10-28 23:56:07,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-10-28 23:56:07,950 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:56:07,951 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 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] [2021-10-28 23:56:07,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-28 23:56:07,951 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:56:07,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:56:07,952 INFO L85 PathProgramCache]: Analyzing trace with hash 263571285, now seen corresponding path program 1 times [2021-10-28 23:56:07,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:56:07,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525460232] [2021-10-28 23:56:07,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:56:07,953 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:56:07,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:56:08,024 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:56:08,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:56:08,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525460232] [2021-10-28 23:56:08,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525460232] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:56:08,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:56:08,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:56:08,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308340955] [2021-10-28 23:56:08,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:56:08,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:56:08,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:56:08,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:56:08,027 INFO L87 Difference]: Start difference. First operand 165 states and 248 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:10,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:56:10,428 INFO L93 Difference]: Finished difference Result 329 states and 497 transitions. [2021-10-28 23:56:10,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:56:10,429 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-10-28 23:56:10,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:56:10,431 INFO L225 Difference]: With dead ends: 329 [2021-10-28 23:56:10,431 INFO L226 Difference]: Without dead ends: 185 [2021-10-28 23:56:10,432 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:56:10,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-10-28 23:56:10,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 165. [2021-10-28 23:56:10,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.5060975609756098) internal successors, (247), 164 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:10,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 247 transitions. [2021-10-28 23:56:10,439 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 247 transitions. Word has length 78 [2021-10-28 23:56:10,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:56:10,439 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 247 transitions. [2021-10-28 23:56:10,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:10,440 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 247 transitions. [2021-10-28 23:56:10,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-10-28 23:56:10,441 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:56:10,441 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 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] [2021-10-28 23:56:10,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-28 23:56:10,442 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:56:10,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:56:10,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1101582057, now seen corresponding path program 1 times [2021-10-28 23:56:10,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:56:10,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155229810] [2021-10-28 23:56:10,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:56:10,443 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:56:10,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:56:10,511 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:56:10,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:56:10,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155229810] [2021-10-28 23:56:10,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155229810] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:56:10,512 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:56:10,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:56:10,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271304428] [2021-10-28 23:56:10,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:56:10,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:56:10,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:56:10,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:56:10,514 INFO L87 Difference]: Start difference. First operand 165 states and 247 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:12,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:56:12,910 INFO L93 Difference]: Finished difference Result 329 states and 495 transitions. [2021-10-28 23:56:12,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:56:12,911 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-10-28 23:56:12,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:56:12,913 INFO L225 Difference]: With dead ends: 329 [2021-10-28 23:56:12,913 INFO L226 Difference]: Without dead ends: 185 [2021-10-28 23:56:12,914 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:56:12,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-10-28 23:56:12,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 165. [2021-10-28 23:56:12,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.5) internal successors, (246), 164 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:12,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 246 transitions. [2021-10-28 23:56:12,922 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 246 transitions. Word has length 78 [2021-10-28 23:56:12,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:56:12,922 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 246 transitions. [2021-10-28 23:56:12,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:12,922 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 246 transitions. [2021-10-28 23:56:12,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-10-28 23:56:12,923 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:56:12,924 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-28 23:56:12,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-28 23:56:12,924 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:56:12,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:56:12,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1738854400, now seen corresponding path program 1 times [2021-10-28 23:56:12,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:56:12,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761617929] [2021-10-28 23:56:12,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:56:12,925 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:56:12,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:56:12,997 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:56:12,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:56:12,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761617929] [2021-10-28 23:56:12,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761617929] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:56:12,999 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:56:12,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:56:12,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476271846] [2021-10-28 23:56:13,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:56:13,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:56:13,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:56:13,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:56:13,001 INFO L87 Difference]: Start difference. First operand 165 states and 246 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:15,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:56:15,404 INFO L93 Difference]: Finished difference Result 328 states and 492 transitions. [2021-10-28 23:56:15,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:56:15,405 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-10-28 23:56:15,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:56:15,407 INFO L225 Difference]: With dead ends: 328 [2021-10-28 23:56:15,407 INFO L226 Difference]: Without dead ends: 184 [2021-10-28 23:56:15,407 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:56:15,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-10-28 23:56:15,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 165. [2021-10-28 23:56:15,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.4939024390243902) internal successors, (245), 164 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:15,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 245 transitions. [2021-10-28 23:56:15,415 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 245 transitions. Word has length 78 [2021-10-28 23:56:15,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:56:15,415 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 245 transitions. [2021-10-28 23:56:15,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:15,416 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 245 transitions. [2021-10-28 23:56:15,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-10-28 23:56:15,417 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:56:15,417 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-28 23:56:15,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-28 23:56:15,418 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:56:15,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:56:15,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1606764736, now seen corresponding path program 1 times [2021-10-28 23:56:15,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:56:15,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379833644] [2021-10-28 23:56:15,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:56:15,419 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:56:15,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:56:15,528 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:56:15,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:56:15,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379833644] [2021-10-28 23:56:15,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379833644] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:56:15,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:56:15,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:56:15,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948757248] [2021-10-28 23:56:15,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:56:15,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:56:15,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:56:15,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:56:15,535 INFO L87 Difference]: Start difference. First operand 165 states and 245 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:17,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:56:17,904 INFO L93 Difference]: Finished difference Result 326 states and 488 transitions. [2021-10-28 23:56:17,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:56:17,905 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-10-28 23:56:17,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:56:17,907 INFO L225 Difference]: With dead ends: 326 [2021-10-28 23:56:17,907 INFO L226 Difference]: Without dead ends: 182 [2021-10-28 23:56:17,908 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:56:17,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-10-28 23:56:17,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 165. [2021-10-28 23:56:17,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.4878048780487805) internal successors, (244), 164 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:17,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 244 transitions. [2021-10-28 23:56:17,915 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 244 transitions. Word has length 78 [2021-10-28 23:56:17,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:56:17,915 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 244 transitions. [2021-10-28 23:56:17,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:17,916 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 244 transitions. [2021-10-28 23:56:17,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-10-28 23:56:17,917 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:56:17,917 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-10-28 23:56:17,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-28 23:56:17,918 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:56:17,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:56:17,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1666617795, now seen corresponding path program 1 times [2021-10-28 23:56:17,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:56:17,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180479229] [2021-10-28 23:56:17,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:56:17,919 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:56:17,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:56:18,000 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:56:18,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:56:18,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180479229] [2021-10-28 23:56:18,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180479229] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:56:18,004 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:56:18,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:56:18,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645921559] [2021-10-28 23:56:18,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:56:18,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:56:18,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:56:18,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:56:18,007 INFO L87 Difference]: Start difference. First operand 165 states and 244 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:20,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:56:20,362 INFO L93 Difference]: Finished difference Result 326 states and 486 transitions. [2021-10-28 23:56:20,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:56:20,363 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-10-28 23:56:20,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:56:20,364 INFO L225 Difference]: With dead ends: 326 [2021-10-28 23:56:20,365 INFO L226 Difference]: Without dead ends: 182 [2021-10-28 23:56:20,365 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:56:20,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-10-28 23:56:20,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 165. [2021-10-28 23:56:20,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.4817073170731707) internal successors, (243), 164 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:20,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 243 transitions. [2021-10-28 23:56:20,373 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 243 transitions. Word has length 79 [2021-10-28 23:56:20,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:56:20,373 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 243 transitions. [2021-10-28 23:56:20,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:20,374 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 243 transitions. [2021-10-28 23:56:20,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-28 23:56:20,375 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:56:20,375 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2021-10-28 23:56:20,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-28 23:56:20,376 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:56:20,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:56:20,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1964059694, now seen corresponding path program 1 times [2021-10-28 23:56:20,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:56:20,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421968243] [2021-10-28 23:56:20,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:56:20,377 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:56:20,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:56:20,467 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:56:20,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:56:20,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421968243] [2021-10-28 23:56:20,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421968243] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:56:20,468 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:56:20,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:56:20,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713035550] [2021-10-28 23:56:20,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:56:20,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:56:20,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:56:20,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:56:20,471 INFO L87 Difference]: Start difference. First operand 165 states and 243 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:22,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:56:22,851 INFO L93 Difference]: Finished difference Result 326 states and 484 transitions. [2021-10-28 23:56:22,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:56:22,852 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-10-28 23:56:22,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:56:22,853 INFO L225 Difference]: With dead ends: 326 [2021-10-28 23:56:22,854 INFO L226 Difference]: Without dead ends: 182 [2021-10-28 23:56:22,854 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:56:22,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-10-28 23:56:22,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 165. [2021-10-28 23:56:22,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.475609756097561) internal successors, (242), 164 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:22,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 242 transitions. [2021-10-28 23:56:22,862 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 242 transitions. Word has length 80 [2021-10-28 23:56:22,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:56:22,862 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 242 transitions. [2021-10-28 23:56:22,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:22,863 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 242 transitions. [2021-10-28 23:56:22,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-10-28 23:56:22,864 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:56:22,864 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2021-10-28 23:56:22,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-28 23:56:22,865 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:56:22,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:56:22,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1738940120, now seen corresponding path program 1 times [2021-10-28 23:56:22,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:56:22,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319340617] [2021-10-28 23:56:22,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:56:22,867 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:56:22,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:56:22,942 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:56:22,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:56:22,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319340617] [2021-10-28 23:56:22,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319340617] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:56:22,943 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:56:22,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:56:22,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737757802] [2021-10-28 23:56:22,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:56:22,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:56:22,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:56:22,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:56:22,945 INFO L87 Difference]: Start difference. First operand 165 states and 242 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:25,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:56:25,278 INFO L93 Difference]: Finished difference Result 316 states and 469 transitions. [2021-10-28 23:56:25,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:56:25,279 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-10-28 23:56:25,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:56:25,280 INFO L225 Difference]: With dead ends: 316 [2021-10-28 23:56:25,281 INFO L226 Difference]: Without dead ends: 172 [2021-10-28 23:56:25,281 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:56:25,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-10-28 23:56:25,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 165. [2021-10-28 23:56:25,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.4695121951219512) internal successors, (241), 164 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:25,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 241 transitions. [2021-10-28 23:56:25,288 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 241 transitions. Word has length 81 [2021-10-28 23:56:25,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:56:25,288 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 241 transitions. [2021-10-28 23:56:25,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:25,289 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 241 transitions. [2021-10-28 23:56:25,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-10-28 23:56:25,290 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:56:25,290 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:56:25,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-28 23:56:25,291 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:56:25,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:56:25,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1548644719, now seen corresponding path program 1 times [2021-10-28 23:56:25,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:56:25,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301796393] [2021-10-28 23:56:25,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:56:25,292 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:56:25,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:56:25,420 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-28 23:56:25,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:56:25,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301796393] [2021-10-28 23:56:25,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301796393] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:56:25,421 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:56:25,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:56:25,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529686279] [2021-10-28 23:56:25,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:56:25,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:56:25,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:56:25,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:56:25,425 INFO L87 Difference]: Start difference. First operand 165 states and 241 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:27,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:56:27,898 INFO L93 Difference]: Finished difference Result 405 states and 606 transitions. [2021-10-28 23:56:27,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:56:27,899 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-10-28 23:56:27,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:56:27,901 INFO L225 Difference]: With dead ends: 405 [2021-10-28 23:56:27,901 INFO L226 Difference]: Without dead ends: 261 [2021-10-28 23:56:27,902 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:56:27,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-10-28 23:56:27,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 208. [2021-10-28 23:56:27,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 1.541062801932367) internal successors, (319), 207 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:27,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 319 transitions. [2021-10-28 23:56:27,912 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 319 transitions. Word has length 86 [2021-10-28 23:56:27,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:56:27,912 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 319 transitions. [2021-10-28 23:56:27,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:27,913 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 319 transitions. [2021-10-28 23:56:27,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-10-28 23:56:27,914 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:56:27,915 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:56:27,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-28 23:56:27,915 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:56:27,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:56:27,916 INFO L85 PathProgramCache]: Analyzing trace with hash 651251441, now seen corresponding path program 1 times [2021-10-28 23:56:27,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:56:27,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107984323] [2021-10-28 23:56:27,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:56:27,917 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:56:27,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:56:28,027 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-28 23:56:28,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:56:28,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107984323] [2021-10-28 23:56:28,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107984323] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:56:28,028 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:56:28,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:56:28,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782043716] [2021-10-28 23:56:28,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:56:28,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:56:28,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:56:28,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:56:28,029 INFO L87 Difference]: Start difference. First operand 208 states and 319 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:30,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:56:30,445 INFO L93 Difference]: Finished difference Result 444 states and 688 transitions. [2021-10-28 23:56:30,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:56:30,446 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-10-28 23:56:30,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:56:30,448 INFO L225 Difference]: With dead ends: 444 [2021-10-28 23:56:30,448 INFO L226 Difference]: Without dead ends: 257 [2021-10-28 23:56:30,448 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:56:30,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-10-28 23:56:30,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 232. [2021-10-28 23:56:30,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.5627705627705628) internal successors, (361), 231 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:30,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 361 transitions. [2021-10-28 23:56:30,458 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 361 transitions. Word has length 86 [2021-10-28 23:56:30,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:56:30,458 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 361 transitions. [2021-10-28 23:56:30,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:30,459 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 361 transitions. [2021-10-28 23:56:30,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-10-28 23:56:30,461 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:56:30,461 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2021-10-28 23:56:30,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-10-28 23:56:30,461 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:56:30,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:56:30,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1438844928, now seen corresponding path program 1 times [2021-10-28 23:56:30,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:56:30,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505829981] [2021-10-28 23:56:30,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:56:30,463 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:56:30,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:56:30,553 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-28 23:56:30,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:56:30,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505829981] [2021-10-28 23:56:30,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505829981] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:56:30,554 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:56:30,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:56:30,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677636621] [2021-10-28 23:56:30,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:56:30,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:56:30,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:56:30,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:56:30,556 INFO L87 Difference]: Start difference. First operand 232 states and 361 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:33,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:56:33,046 INFO L93 Difference]: Finished difference Result 496 states and 767 transitions. [2021-10-28 23:56:33,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:56:33,047 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-10-28 23:56:33,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:56:33,049 INFO L225 Difference]: With dead ends: 496 [2021-10-28 23:56:33,049 INFO L226 Difference]: Without dead ends: 285 [2021-10-28 23:56:33,050 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:56:33,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2021-10-28 23:56:33,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 232. [2021-10-28 23:56:33,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.5584415584415585) internal successors, (360), 231 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:33,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 360 transitions. [2021-10-28 23:56:33,060 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 360 transitions. Word has length 99 [2021-10-28 23:56:33,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:56:33,061 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 360 transitions. [2021-10-28 23:56:33,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:33,061 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 360 transitions. [2021-10-28 23:56:33,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-10-28 23:56:33,063 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:56:33,063 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2021-10-28 23:56:33,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-10-28 23:56:33,064 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:56:33,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:56:33,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1398170178, now seen corresponding path program 1 times [2021-10-28 23:56:33,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:56:33,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013825752] [2021-10-28 23:56:33,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:56:33,065 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:56:33,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:56:33,169 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-28 23:56:33,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:56:33,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013825752] [2021-10-28 23:56:33,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013825752] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:56:33,170 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:56:33,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:56:33,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736391856] [2021-10-28 23:56:33,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:56:33,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:56:33,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:56:33,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:56:33,173 INFO L87 Difference]: Start difference. First operand 232 states and 360 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:35,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:56:35,681 INFO L93 Difference]: Finished difference Result 468 states and 727 transitions. [2021-10-28 23:56:35,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:56:35,682 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-10-28 23:56:35,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:56:35,684 INFO L225 Difference]: With dead ends: 468 [2021-10-28 23:56:35,684 INFO L226 Difference]: Without dead ends: 257 [2021-10-28 23:56:35,685 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:56:35,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-10-28 23:56:35,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 232. [2021-10-28 23:56:35,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.5541125541125542) internal successors, (359), 231 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:35,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 359 transitions. [2021-10-28 23:56:35,694 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 359 transitions. Word has length 99 [2021-10-28 23:56:35,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:56:35,695 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 359 transitions. [2021-10-28 23:56:35,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:35,695 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 359 transitions. [2021-10-28 23:56:35,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-28 23:56:35,696 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:56:35,696 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-28 23:56:35,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-10-28 23:56:35,697 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:56:35,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:56:35,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1186151471, now seen corresponding path program 1 times [2021-10-28 23:56:35,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:56:35,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123609460] [2021-10-28 23:56:35,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:56:35,699 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:56:35,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:56:35,798 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-28 23:56:35,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:56:35,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123609460] [2021-10-28 23:56:35,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123609460] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:56:35,799 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:56:35,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:56:35,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280106998] [2021-10-28 23:56:35,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:56:35,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:56:35,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:56:35,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:56:35,801 INFO L87 Difference]: Start difference. First operand 232 states and 359 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:38,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:56:38,285 INFO L93 Difference]: Finished difference Result 495 states and 762 transitions. [2021-10-28 23:56:38,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:56:38,286 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-10-28 23:56:38,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:56:38,289 INFO L225 Difference]: With dead ends: 495 [2021-10-28 23:56:38,289 INFO L226 Difference]: Without dead ends: 284 [2021-10-28 23:56:38,290 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:56:38,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-10-28 23:56:38,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 232. [2021-10-28 23:56:38,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.5497835497835497) internal successors, (358), 231 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:38,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 358 transitions. [2021-10-28 23:56:38,301 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 358 transitions. Word has length 100 [2021-10-28 23:56:38,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:56:38,301 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 358 transitions. [2021-10-28 23:56:38,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:38,302 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 358 transitions. [2021-10-28 23:56:38,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-28 23:56:38,303 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:56:38,303 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:56:38,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-10-28 23:56:38,304 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:56:38,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:56:38,304 INFO L85 PathProgramCache]: Analyzing trace with hash 2024162243, now seen corresponding path program 1 times [2021-10-28 23:56:38,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:56:38,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861092485] [2021-10-28 23:56:38,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:56:38,305 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:56:38,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:56:38,451 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-28 23:56:38,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:56:38,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861092485] [2021-10-28 23:56:38,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861092485] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:56:38,453 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:56:38,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:56:38,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247268049] [2021-10-28 23:56:38,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:56:38,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:56:38,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:56:38,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:56:38,455 INFO L87 Difference]: Start difference. First operand 232 states and 358 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:42,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:56:42,991 INFO L93 Difference]: Finished difference Result 464 states and 721 transitions. [2021-10-28 23:56:42,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:56:42,992 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-10-28 23:56:42,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:56:42,994 INFO L225 Difference]: With dead ends: 464 [2021-10-28 23:56:42,994 INFO L226 Difference]: Without dead ends: 253 [2021-10-28 23:56:42,995 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:56:42,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-10-28 23:56:43,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 252. [2021-10-28 23:56:43,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 1.5298804780876494) internal successors, (384), 251 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:43,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 384 transitions. [2021-10-28 23:56:43,006 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 384 transitions. Word has length 100 [2021-10-28 23:56:43,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:56:43,006 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 384 transitions. [2021-10-28 23:56:43,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:43,007 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 384 transitions. [2021-10-28 23:56:43,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-28 23:56:43,008 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:56:43,008 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2021-10-28 23:56:43,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-10-28 23:56:43,009 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:56:43,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:56:43,010 INFO L85 PathProgramCache]: Analyzing trace with hash -816274214, now seen corresponding path program 1 times [2021-10-28 23:56:43,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:56:43,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956056233] [2021-10-28 23:56:43,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:56:43,010 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:56:43,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:56:43,088 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-28 23:56:43,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:56:43,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956056233] [2021-10-28 23:56:43,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956056233] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:56:43,089 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:56:43,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:56:43,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996787924] [2021-10-28 23:56:43,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:56:43,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:56:43,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:56:43,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:56:43,092 INFO L87 Difference]: Start difference. First operand 252 states and 384 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:45,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:56:45,551 INFO L93 Difference]: Finished difference Result 534 states and 810 transitions. [2021-10-28 23:56:45,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:56:45,552 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-10-28 23:56:45,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:56:45,555 INFO L225 Difference]: With dead ends: 534 [2021-10-28 23:56:45,555 INFO L226 Difference]: Without dead ends: 303 [2021-10-28 23:56:45,556 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:56:45,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-10-28 23:56:45,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 252. [2021-10-28 23:56:45,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 1.5258964143426295) internal successors, (383), 251 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:45,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 383 transitions. [2021-10-28 23:56:45,567 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 383 transitions. Word has length 100 [2021-10-28 23:56:45,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:56:45,568 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 383 transitions. [2021-10-28 23:56:45,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:45,568 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 383 transitions. [2021-10-28 23:56:45,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-28 23:56:45,569 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:56:45,570 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2021-10-28 23:56:45,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-10-28 23:56:45,570 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:56:45,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:56:45,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1765622374, now seen corresponding path program 1 times [2021-10-28 23:56:45,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:56:45,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573143250] [2021-10-28 23:56:45,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:56:45,572 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:56:45,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:56:45,684 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-28 23:56:45,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:56:45,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573143250] [2021-10-28 23:56:45,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573143250] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:56:45,685 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:56:45,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:56:45,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575614372] [2021-10-28 23:56:45,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:56:45,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:56:45,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:56:45,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:56:45,687 INFO L87 Difference]: Start difference. First operand 252 states and 383 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:48,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:56:48,237 INFO L93 Difference]: Finished difference Result 532 states and 806 transitions. [2021-10-28 23:56:48,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:56:48,238 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-10-28 23:56:48,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:56:48,240 INFO L225 Difference]: With dead ends: 532 [2021-10-28 23:56:48,240 INFO L226 Difference]: Without dead ends: 301 [2021-10-28 23:56:48,241 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:56:48,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2021-10-28 23:56:48,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 252. [2021-10-28 23:56:48,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 1.5219123505976095) internal successors, (382), 251 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:48,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 382 transitions. [2021-10-28 23:56:48,252 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 382 transitions. Word has length 100 [2021-10-28 23:56:48,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:56:48,253 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 382 transitions. [2021-10-28 23:56:48,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:48,253 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 382 transitions. [2021-10-28 23:56:48,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-28 23:56:48,255 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:56:48,255 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2021-10-28 23:56:48,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-10-28 23:56:48,256 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:56:48,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:56:48,256 INFO L85 PathProgramCache]: Analyzing trace with hash 444643036, now seen corresponding path program 1 times [2021-10-28 23:56:48,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:56:48,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671543275] [2021-10-28 23:56:48,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:56:48,257 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:56:48,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:56:48,335 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-28 23:56:48,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:56:48,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671543275] [2021-10-28 23:56:48,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671543275] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:56:48,336 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:56:48,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:56:48,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155870144] [2021-10-28 23:56:48,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:56:48,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:56:48,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:56:48,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:56:48,338 INFO L87 Difference]: Start difference. First operand 252 states and 382 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:50,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:56:50,711 INFO L93 Difference]: Finished difference Result 506 states and 768 transitions. [2021-10-28 23:56:50,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:56:50,712 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-10-28 23:56:50,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:56:50,714 INFO L225 Difference]: With dead ends: 506 [2021-10-28 23:56:50,714 INFO L226 Difference]: Without dead ends: 275 [2021-10-28 23:56:50,715 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:56:50,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-10-28 23:56:50,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 252. [2021-10-28 23:56:50,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 1.5179282868525896) internal successors, (381), 251 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:50,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 381 transitions. [2021-10-28 23:56:50,726 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 381 transitions. Word has length 100 [2021-10-28 23:56:50,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:56:50,727 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 381 transitions. [2021-10-28 23:56:50,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:50,727 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 381 transitions. [2021-10-28 23:56:50,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-28 23:56:50,729 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:56:50,729 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2021-10-28 23:56:50,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-10-28 23:56:50,729 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:56:50,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:56:50,730 INFO L85 PathProgramCache]: Analyzing trace with hash -504705124, now seen corresponding path program 1 times [2021-10-28 23:56:50,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:56:50,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038344862] [2021-10-28 23:56:50,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:56:50,731 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:56:50,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:56:50,840 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-28 23:56:50,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:56:50,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038344862] [2021-10-28 23:56:50,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038344862] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:56:50,841 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:56:50,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:56:50,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946818201] [2021-10-28 23:56:50,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:56:50,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:56:50,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:56:50,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:56:50,843 INFO L87 Difference]: Start difference. First operand 252 states and 381 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:53,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:56:53,183 INFO L93 Difference]: Finished difference Result 504 states and 764 transitions. [2021-10-28 23:56:53,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:56:53,183 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-10-28 23:56:53,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:56:53,185 INFO L225 Difference]: With dead ends: 504 [2021-10-28 23:56:53,185 INFO L226 Difference]: Without dead ends: 273 [2021-10-28 23:56:53,186 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:56:53,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-10-28 23:56:53,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 252. [2021-10-28 23:56:53,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 1.5139442231075697) internal successors, (380), 251 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:53,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 380 transitions. [2021-10-28 23:56:53,197 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 380 transitions. Word has length 100 [2021-10-28 23:56:53,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:56:53,197 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 380 transitions. [2021-10-28 23:56:53,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:53,198 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 380 transitions. [2021-10-28 23:56:53,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-10-28 23:56:53,199 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:56:53,200 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-28 23:56:53,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-10-28 23:56:53,200 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:56:53,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:56:53,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1074128156, now seen corresponding path program 1 times [2021-10-28 23:56:53,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:56:53,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389979202] [2021-10-28 23:56:53,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:56:53,202 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:56:53,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:56:53,283 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-28 23:56:53,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:56:53,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389979202] [2021-10-28 23:56:53,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389979202] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:56:53,284 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:56:53,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:56:53,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751212634] [2021-10-28 23:56:53,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:56:53,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:56:53,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:56:53,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:56:53,286 INFO L87 Difference]: Start difference. First operand 252 states and 380 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:55,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:56:55,734 INFO L93 Difference]: Finished difference Result 532 states and 800 transitions. [2021-10-28 23:56:55,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:56:55,735 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-10-28 23:56:55,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:56:55,737 INFO L225 Difference]: With dead ends: 532 [2021-10-28 23:56:55,738 INFO L226 Difference]: Without dead ends: 301 [2021-10-28 23:56:55,738 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:56:55,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2021-10-28 23:56:55,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 252. [2021-10-28 23:56:55,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 1.5099601593625498) internal successors, (379), 251 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:55,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 379 transitions. [2021-10-28 23:56:55,749 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 379 transitions. Word has length 101 [2021-10-28 23:56:55,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:56:55,749 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 379 transitions. [2021-10-28 23:56:55,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:55,750 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 379 transitions. [2021-10-28 23:56:55,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-10-28 23:56:55,751 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:56:55,751 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-28 23:56:55,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-10-28 23:56:55,752 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:56:55,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:56:55,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1507857242, now seen corresponding path program 1 times [2021-10-28 23:56:55,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:56:55,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927658629] [2021-10-28 23:56:55,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:56:55,753 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:56:55,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:56:55,851 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-28 23:56:55,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:56:55,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927658629] [2021-10-28 23:56:55,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927658629] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:56:55,851 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:56:55,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:56:55,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696072160] [2021-10-28 23:56:55,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:56:55,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:56:55,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:56:55,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:56:55,854 INFO L87 Difference]: Start difference. First operand 252 states and 379 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:58,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:56:58,229 INFO L93 Difference]: Finished difference Result 504 states and 760 transitions. [2021-10-28 23:56:58,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:56:58,230 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-10-28 23:56:58,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:56:58,232 INFO L225 Difference]: With dead ends: 504 [2021-10-28 23:56:58,233 INFO L226 Difference]: Without dead ends: 273 [2021-10-28 23:56:58,233 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:56:58,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-10-28 23:56:58,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 252. [2021-10-28 23:56:58,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 1.5059760956175299) internal successors, (378), 251 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:58,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 378 transitions. [2021-10-28 23:56:58,245 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 378 transitions. Word has length 101 [2021-10-28 23:56:58,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:56:58,245 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 378 transitions. [2021-10-28 23:56:58,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:58,246 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 378 transitions. [2021-10-28 23:56:58,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-10-28 23:56:58,247 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:56:58,247 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-28 23:56:58,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-10-28 23:56:58,248 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:56:58,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:56:58,248 INFO L85 PathProgramCache]: Analyzing trace with hash 416480630, now seen corresponding path program 1 times [2021-10-28 23:56:58,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:56:58,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897026858] [2021-10-28 23:56:58,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:56:58,249 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:56:58,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:56:58,328 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-28 23:56:58,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:56:58,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897026858] [2021-10-28 23:56:58,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897026858] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:56:58,329 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:56:58,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:56:58,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290293496] [2021-10-28 23:56:58,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:56:58,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:56:58,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:56:58,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:56:58,331 INFO L87 Difference]: Start difference. First operand 252 states and 378 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:57:00,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:57:00,915 INFO L93 Difference]: Finished difference Result 532 states and 796 transitions. [2021-10-28 23:57:00,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:57:00,916 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-10-28 23:57:00,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:57:00,918 INFO L225 Difference]: With dead ends: 532 [2021-10-28 23:57:00,918 INFO L226 Difference]: Without dead ends: 301 [2021-10-28 23:57:00,919 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:57:00,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2021-10-28 23:57:00,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 252. [2021-10-28 23:57:00,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 1.50199203187251) internal successors, (377), 251 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:57:00,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 377 transitions. [2021-10-28 23:57:00,932 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 377 transitions. Word has length 102 [2021-10-28 23:57:00,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:57:00,932 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 377 transitions. [2021-10-28 23:57:00,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:57:00,933 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 377 transitions. [2021-10-28 23:57:00,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-10-28 23:57:00,934 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:57:00,934 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-28 23:57:00,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-10-28 23:57:00,935 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:57:00,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:57:00,936 INFO L85 PathProgramCache]: Analyzing trace with hash 977180408, now seen corresponding path program 1 times [2021-10-28 23:57:00,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:57:00,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756259173] [2021-10-28 23:57:00,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:57:00,936 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:57:00,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:57:01,041 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-28 23:57:01,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:57:01,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756259173] [2021-10-28 23:57:01,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756259173] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:57:01,043 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:57:01,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:57:01,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153301830] [2021-10-28 23:57:01,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:57:01,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:57:01,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:57:01,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:57:01,045 INFO L87 Difference]: Start difference. First operand 252 states and 377 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:57:03,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:57:03,453 INFO L93 Difference]: Finished difference Result 504 states and 756 transitions. [2021-10-28 23:57:03,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:57:03,453 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-10-28 23:57:03,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:57:03,456 INFO L225 Difference]: With dead ends: 504 [2021-10-28 23:57:03,456 INFO L226 Difference]: Without dead ends: 273 [2021-10-28 23:57:03,456 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:57:03,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-10-28 23:57:03,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 252. [2021-10-28 23:57:03,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 1.49800796812749) internal successors, (376), 251 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:57:03,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 376 transitions. [2021-10-28 23:57:03,467 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 376 transitions. Word has length 102 [2021-10-28 23:57:03,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:57:03,468 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 376 transitions. [2021-10-28 23:57:03,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:57:03,468 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 376 transitions. [2021-10-28 23:57:03,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-10-28 23:57:03,469 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:57:03,469 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-28 23:57:03,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-10-28 23:57:03,470 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:57:03,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:57:03,471 INFO L85 PathProgramCache]: Analyzing trace with hash 301543159, now seen corresponding path program 1 times [2021-10-28 23:57:03,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:57:03,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812135770] [2021-10-28 23:57:03,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:57:03,471 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:57:03,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:57:03,556 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-28 23:57:03,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:57:03,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812135770] [2021-10-28 23:57:03,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812135770] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:57:03,557 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:57:03,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:57:03,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645538733] [2021-10-28 23:57:03,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:57:03,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:57:03,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:57:03,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:57:03,559 INFO L87 Difference]: Start difference. First operand 252 states and 376 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:57:06,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:57:06,124 INFO L93 Difference]: Finished difference Result 532 states and 792 transitions. [2021-10-28 23:57:06,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:57:06,125 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-10-28 23:57:06,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:57:06,128 INFO L225 Difference]: With dead ends: 532 [2021-10-28 23:57:06,128 INFO L226 Difference]: Without dead ends: 301 [2021-10-28 23:57:06,128 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:57:06,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2021-10-28 23:57:06,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 252. [2021-10-28 23:57:06,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 1.4940239043824701) internal successors, (375), 251 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:57:06,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 375 transitions. [2021-10-28 23:57:06,140 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 375 transitions. Word has length 103 [2021-10-28 23:57:06,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:57:06,141 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 375 transitions. [2021-10-28 23:57:06,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:57:06,141 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 375 transitions. [2021-10-28 23:57:06,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-10-28 23:57:06,142 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:57:06,143 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-28 23:57:06,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-10-28 23:57:06,143 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:57:06,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:57:06,144 INFO L85 PathProgramCache]: Analyzing trace with hash 503367093, now seen corresponding path program 1 times [2021-10-28 23:57:06,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:57:06,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569584439] [2021-10-28 23:57:06,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:57:06,145 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:57:06,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:57:06,252 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-28 23:57:06,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:57:06,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569584439] [2021-10-28 23:57:06,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569584439] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:57:06,253 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:57:06,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:57:06,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734662743] [2021-10-28 23:57:06,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:57:06,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:57:06,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:57:06,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:57:06,255 INFO L87 Difference]: Start difference. First operand 252 states and 375 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:57:08,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:57:08,645 INFO L93 Difference]: Finished difference Result 504 states and 752 transitions. [2021-10-28 23:57:08,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:57:08,646 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-10-28 23:57:08,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:57:08,648 INFO L225 Difference]: With dead ends: 504 [2021-10-28 23:57:08,648 INFO L226 Difference]: Without dead ends: 273 [2021-10-28 23:57:08,649 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:57:08,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-10-28 23:57:08,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 252. [2021-10-28 23:57:08,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 1.4900398406374502) internal successors, (374), 251 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:57:08,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 374 transitions. [2021-10-28 23:57:08,660 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 374 transitions. Word has length 103 [2021-10-28 23:57:08,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:57:08,660 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 374 transitions. [2021-10-28 23:57:08,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:57:08,661 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 374 transitions. [2021-10-28 23:57:08,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-10-28 23:57:08,662 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:57:08,663 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-28 23:57:08,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-10-28 23:57:08,663 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:57:08,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:57:08,664 INFO L85 PathProgramCache]: Analyzing trace with hash -169251791, now seen corresponding path program 1 times [2021-10-28 23:57:08,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:57:08,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421599417] [2021-10-28 23:57:08,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:57:08,665 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:57:08,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:57:08,745 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-28 23:57:08,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:57:08,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421599417] [2021-10-28 23:57:08,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421599417] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:57:08,746 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:57:08,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:57:08,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646430678] [2021-10-28 23:57:08,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:57:08,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:57:08,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:57:08,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:57:08,748 INFO L87 Difference]: Start difference. First operand 252 states and 374 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:57:11,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:57:11,237 INFO L93 Difference]: Finished difference Result 522 states and 776 transitions. [2021-10-28 23:57:11,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:57:11,246 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-10-28 23:57:11,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:57:11,249 INFO L225 Difference]: With dead ends: 522 [2021-10-28 23:57:11,249 INFO L226 Difference]: Without dead ends: 291 [2021-10-28 23:57:11,250 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:57:11,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-10-28 23:57:11,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 252. [2021-10-28 23:57:11,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 1.4860557768924303) internal successors, (373), 251 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:57:11,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 373 transitions. [2021-10-28 23:57:11,262 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 373 transitions. Word has length 104 [2021-10-28 23:57:11,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:57:11,262 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 373 transitions. [2021-10-28 23:57:11,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:57:11,263 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 373 transitions. [2021-10-28 23:57:11,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-10-28 23:57:11,264 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:57:11,264 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-28 23:57:11,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-10-28 23:57:11,265 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:57:11,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:57:11,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1792322867, now seen corresponding path program 1 times [2021-10-28 23:57:11,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:57:11,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947649028] [2021-10-28 23:57:11,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:57:11,267 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:57:11,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:57:11,367 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-28 23:57:11,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:57:11,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947649028] [2021-10-28 23:57:11,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947649028] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:57:11,368 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:57:11,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:57:11,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409469174] [2021-10-28 23:57:11,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:57:11,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:57:11,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:57:11,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:57:11,371 INFO L87 Difference]: Start difference. First operand 252 states and 373 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:57:13,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:57:13,697 INFO L93 Difference]: Finished difference Result 494 states and 736 transitions. [2021-10-28 23:57:13,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:57:13,697 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-10-28 23:57:13,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:57:13,699 INFO L225 Difference]: With dead ends: 494 [2021-10-28 23:57:13,699 INFO L226 Difference]: Without dead ends: 263 [2021-10-28 23:57:13,700 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:57:13,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-10-28 23:57:13,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 252. [2021-10-28 23:57:13,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 1.4820717131474104) internal successors, (372), 251 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:57:13,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 372 transitions. [2021-10-28 23:57:13,712 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 372 transitions. Word has length 104 [2021-10-28 23:57:13,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:57:13,712 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 372 transitions. [2021-10-28 23:57:13,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:57:13,713 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 372 transitions. [2021-10-28 23:57:13,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-10-28 23:57:13,714 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:57:13,714 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2021-10-28 23:57:13,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-10-28 23:57:13,715 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:57:13,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:57:13,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1449725251, now seen corresponding path program 1 times [2021-10-28 23:57:13,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:57:13,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416767923] [2021-10-28 23:57:13,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:57:13,716 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:57:13,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:57:13,800 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-28 23:57:13,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:57:13,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416767923] [2021-10-28 23:57:13,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416767923] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:57:13,801 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:57:13,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:57:13,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395291858] [2021-10-28 23:57:13,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:57:13,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:57:13,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:57:13,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:57:13,803 INFO L87 Difference]: Start difference. First operand 252 states and 372 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:57:16,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:57:16,227 INFO L93 Difference]: Finished difference Result 522 states and 772 transitions. [2021-10-28 23:57:16,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:57:16,230 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-10-28 23:57:16,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:57:16,232 INFO L225 Difference]: With dead ends: 522 [2021-10-28 23:57:16,232 INFO L226 Difference]: Without dead ends: 291 [2021-10-28 23:57:16,233 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:57:16,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-10-28 23:57:16,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 252. [2021-10-28 23:57:16,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 1.4780876494023905) internal successors, (371), 251 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:57:16,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 371 transitions. [2021-10-28 23:57:16,244 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 371 transitions. Word has length 108 [2021-10-28 23:57:16,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:57:16,245 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 371 transitions. [2021-10-28 23:57:16,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:57:16,245 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 371 transitions. [2021-10-28 23:57:16,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-10-28 23:57:16,247 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:57:16,247 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2021-10-28 23:57:16,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-10-28 23:57:16,247 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:57:16,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:57:16,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1159062207, now seen corresponding path program 1 times [2021-10-28 23:57:16,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:57:16,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869312135] [2021-10-28 23:57:16,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:57:16,249 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:57:16,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:57:16,338 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-28 23:57:16,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:57:16,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869312135] [2021-10-28 23:57:16,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869312135] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:57:16,339 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:57:16,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:57:16,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363355859] [2021-10-28 23:57:16,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:57:16,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:57:16,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:57:16,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:57:16,342 INFO L87 Difference]: Start difference. First operand 252 states and 371 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:57:16,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:57:16,380 INFO L93 Difference]: Finished difference Result 710 states and 1060 transitions. [2021-10-28 23:57:16,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:57:16,381 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-10-28 23:57:16,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:57:16,385 INFO L225 Difference]: With dead ends: 710 [2021-10-28 23:57:16,385 INFO L226 Difference]: Without dead ends: 479 [2021-10-28 23:57:16,386 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 [2021-10-28 23:57:16,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2021-10-28 23:57:16,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 479. [2021-10-28 23:57:16,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 478 states have (on average 1.4832635983263598) internal successors, (709), 478 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:57:16,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 709 transitions. [2021-10-28 23:57:16,407 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 709 transitions. Word has length 108 [2021-10-28 23:57:16,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:57:16,407 INFO L470 AbstractCegarLoop]: Abstraction has 479 states and 709 transitions. [2021-10-28 23:57:16,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:57:16,408 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 709 transitions. [2021-10-28 23:57:16,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-10-28 23:57:16,410 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:57:16,410 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2021-10-28 23:57:16,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-10-28 23:57:16,411 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:57:16,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:57:16,411 INFO L85 PathProgramCache]: Analyzing trace with hash -57091519, now seen corresponding path program 1 times [2021-10-28 23:57:16,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:57:16,412 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287536518] [2021-10-28 23:57:16,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:57:16,412 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:57:16,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:57:16,470 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-10-28 23:57:16,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:57:16,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287536518] [2021-10-28 23:57:16,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287536518] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:57:16,471 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:57:16,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:57:16,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210285520] [2021-10-28 23:57:16,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:57:16,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:57:16,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:57:16,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:57:16,473 INFO L87 Difference]: Start difference. First operand 479 states and 709 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:57:16,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:57:16,507 INFO L93 Difference]: Finished difference Result 964 states and 1430 transitions. [2021-10-28 23:57:16,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:57:16,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-10-28 23:57:16,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:57:16,512 INFO L225 Difference]: With dead ends: 964 [2021-10-28 23:57:16,512 INFO L226 Difference]: Without dead ends: 506 [2021-10-28 23:57:16,513 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 [2021-10-28 23:57:16,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2021-10-28 23:57:16,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 506. [2021-10-28 23:57:16,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 505 states have (on average 1.4732673267326732) internal successors, (744), 505 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:57:16,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 744 transitions. [2021-10-28 23:57:16,535 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 744 transitions. Word has length 108 [2021-10-28 23:57:16,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:57:16,536 INFO L470 AbstractCegarLoop]: Abstraction has 506 states and 744 transitions. [2021-10-28 23:57:16,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:57:16,536 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 744 transitions. [2021-10-28 23:57:16,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-10-28 23:57:16,538 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:57:16,538 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2021-10-28 23:57:16,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-10-28 23:57:16,539 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:57:16,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:57:16,540 INFO L85 PathProgramCache]: Analyzing trace with hash -643367741, now seen corresponding path program 1 times [2021-10-28 23:57:16,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:57:16,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492201882] [2021-10-28 23:57:16,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:57:16,540 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:57:16,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:57:16,593 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-10-28 23:57:16,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:57:16,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492201882] [2021-10-28 23:57:16,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492201882] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:57:16,594 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:57:16,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:57:16,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505218088] [2021-10-28 23:57:16,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:57:16,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:57:16,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:57:16,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:57:16,596 INFO L87 Difference]: Start difference. First operand 506 states and 744 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:57:16,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:57:16,625 INFO L93 Difference]: Finished difference Result 993 states and 1466 transitions. [2021-10-28 23:57:16,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:57:16,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-10-28 23:57:16,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:57:16,629 INFO L225 Difference]: With dead ends: 993 [2021-10-28 23:57:16,629 INFO L226 Difference]: Without dead ends: 508 [2021-10-28 23:57:16,631 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 [2021-10-28 23:57:16,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2021-10-28 23:57:16,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 508. [2021-10-28 23:57:16,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 507 states have (on average 1.4714003944773175) internal successors, (746), 507 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:57:16,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 746 transitions. [2021-10-28 23:57:16,653 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 746 transitions. Word has length 108 [2021-10-28 23:57:16,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:57:16,654 INFO L470 AbstractCegarLoop]: Abstraction has 508 states and 746 transitions. [2021-10-28 23:57:16,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:57:16,654 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 746 transitions. [2021-10-28 23:57:16,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-10-28 23:57:16,656 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:57:16,656 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-28 23:57:16,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-10-28 23:57:16,657 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:57:16,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:57:16,658 INFO L85 PathProgramCache]: Analyzing trace with hash 42738551, now seen corresponding path program 1 times [2021-10-28 23:57:16,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:57:16,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652840372] [2021-10-28 23:57:16,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:57:16,658 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:57:16,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:57:17,029 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-10-28 23:57:17,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:57:17,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652840372] [2021-10-28 23:57:17,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652840372] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:57:17,029 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:57:17,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:57:17,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749188076] [2021-10-28 23:57:17,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:57:17,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:57:17,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:57:17,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:57:17,031 INFO L87 Difference]: Start difference. First operand 508 states and 746 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:57:21,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:57:21,523 INFO L93 Difference]: Finished difference Result 1013 states and 1488 transitions. [2021-10-28 23:57:21,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:57:21,524 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2021-10-28 23:57:21,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:57:21,527 INFO L225 Difference]: With dead ends: 1013 [2021-10-28 23:57:21,527 INFO L226 Difference]: Without dead ends: 508 [2021-10-28 23:57:21,528 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:57:21,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2021-10-28 23:57:21,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 508. [2021-10-28 23:57:21,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 507 states have (on average 1.4694280078895463) internal successors, (745), 507 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:57:21,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 745 transitions. [2021-10-28 23:57:21,549 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 745 transitions. Word has length 127 [2021-10-28 23:57:21,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:57:21,550 INFO L470 AbstractCegarLoop]: Abstraction has 508 states and 745 transitions. [2021-10-28 23:57:21,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:57:21,550 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 745 transitions. [2021-10-28 23:57:21,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-10-28 23:57:21,553 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:57:21,553 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-28 23:57:21,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-10-28 23:57:21,554 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:57:21,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:57:21,554 INFO L85 PathProgramCache]: Analyzing trace with hash -663858055, now seen corresponding path program 1 times [2021-10-28 23:57:21,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:57:21,555 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260615886] [2021-10-28 23:57:21,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:57:21,555 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:57:21,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:57:21,926 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:57:22,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:57:22,432 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:57:22,432 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:57:22,433 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:57:22,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-10-28 23:57:22,440 INFO L731 BasicCegarLoop]: Path program 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] [2021-10-28 23:57:22,445 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:57:22,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:57:22 BoogieIcfgContainer [2021-10-28 23:57:22,643 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:57:22,644 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:57:22,644 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:57:22,645 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:57:22,645 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:55:39" (3/4) ... [2021-10-28 23:57:22,652 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 23:57:22,652 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:57:22,654 INFO L168 Benchmark]: Toolchain (without parser) took 107227.04 ms. Allocated memory was 109.1 MB in the beginning and 138.4 MB in the end (delta: 29.4 MB). Free memory was 71.6 MB in the beginning and 94.9 MB in the end (delta: -23.3 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. [2021-10-28 23:57:22,655 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 83.9 MB. Free memory was 62.9 MB in the beginning and 62.9 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:57:22,656 INFO L168 Benchmark]: CACSL2BoogieTranslator took 784.22 ms. Allocated memory is still 109.1 MB. Free memory was 71.6 MB in the beginning and 62.6 MB in the end (delta: 9.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:57:22,656 INFO L168 Benchmark]: Boogie Procedure Inliner took 125.13 ms. Allocated memory is still 109.1 MB. Free memory was 62.6 MB in the beginning and 57.5 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:57:22,657 INFO L168 Benchmark]: Boogie Preprocessor took 115.38 ms. Allocated memory is still 109.1 MB. Free memory was 57.5 MB in the beginning and 50.7 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:57:22,657 INFO L168 Benchmark]: RCFGBuilder took 3531.63 ms. Allocated memory is still 109.1 MB. Free memory was 50.7 MB in the beginning and 52.5 MB in the end (delta: -1.8 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.1 GB. [2021-10-28 23:57:22,658 INFO L168 Benchmark]: TraceAbstraction took 102654.23 ms. Allocated memory was 109.1 MB in the beginning and 138.4 MB in the end (delta: 29.4 MB). Free memory was 51.8 MB in the beginning and 94.9 MB in the end (delta: -43.0 MB). Peak memory consumption was 55.9 MB. Max. memory is 16.1 GB. [2021-10-28 23:57:22,659 INFO L168 Benchmark]: Witness Printer took 7.74 ms. Allocated memory is still 138.4 MB. Free memory is still 94.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:57:22,662 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 83.9 MB. Free memory was 62.9 MB in the beginning and 62.9 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 784.22 ms. Allocated memory is still 109.1 MB. Free memory was 71.6 MB in the beginning and 62.6 MB in the end (delta: 9.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 125.13 ms. Allocated memory is still 109.1 MB. Free memory was 62.6 MB in the beginning and 57.5 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 115.38 ms. Allocated memory is still 109.1 MB. Free memory was 57.5 MB in the beginning and 50.7 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 3531.63 ms. Allocated memory is still 109.1 MB. Free memory was 50.7 MB in the beginning and 52.5 MB in the end (delta: -1.8 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 102654.23 ms. Allocated memory was 109.1 MB in the beginning and 138.4 MB in the end (delta: 29.4 MB). Free memory was 51.8 MB in the beginning and 94.9 MB in the end (delta: -43.0 MB). Peak memory consumption was 55.9 MB. Max. memory is 16.1 GB. * Witness Printer took 7.74 ms. Allocated memory is still 138.4 MB. Free memory is still 94.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1734]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 1152. Possible FailurePath: [L1054] static int init = 1; [L1055] static SSL_METHOD SSLv3_server_data ; VAL [init=1, SSLv3_server_data={21:0}] [L1077] SSL *s ; [L1078] int tmp ; [L1082] s = malloc(sizeof(SSL)) [L1083] s->s3 = malloc(sizeof(struct ssl3_state_st)) [L1084] s->ctx = malloc(sizeof(SSL_CTX)) [L1085] s->session = malloc(sizeof(SSL_SESSION)) [L1086] s->state = 8464 [L1088] s->info_callback = (void (*) ()) __VERIFIER_nondet_ulong() [L1089] s->options = __VERIFIER_nondet_ulong() [L1090] s->verify_mode = __VERIFIER_nondet_int() [L1091] EXPR s->session [L1091] (s->session)->peer = (struct x509_st*) __VERIFIER_nondet_ulong() [L1092] EXPR s->s3 [L1092] (s->s3)->tmp.cert_request = __VERIFIER_nondet_int() [L1093] EXPR s->s3 [L1093] (s->s3)->tmp.new_cipher = malloc(sizeof(struct ssl_cipher_st)) [L1094] EXPR s->s3 [L1094] EXPR (s->s3)->tmp.new_cipher [L1094] ((s->s3)->tmp.new_cipher)->algorithms = __VERIFIER_nondet_ulong() [L1095] EXPR s->s3 [L1095] EXPR (s->s3)->tmp.new_cipher [L1095] ((s->s3)->tmp.new_cipher)->algo_strength = __VERIFIER_nondet_ulong() [L1096] COND FALSE !(__VERIFIER_nondet_int()) [L1102] s->cert = malloc(sizeof(struct cert_st)) [L1103] EXPR s->cert [L1103] (s->cert)->pkeys[0].privatekey = (struct evp_pkey_st*) __VERIFIER_nondet_ulong() [L1112] BUF_MEM *buf ; [L1113] unsigned long l ; [L1114] unsigned long Time ; [L1115] unsigned long tmp ; [L1116] void (*cb)() ; [L1117] long num1 ; [L1118] int ret ; [L1119] int new_state ; [L1120] int state ; [L1121] int skip ; [L1122] int got_new_session ; [L1123] int tmp___1 = __VERIFIER_nondet_int() ; [L1124] int tmp___2 = __VERIFIER_nondet_int() ; [L1125] int tmp___3 = __VERIFIER_nondet_int() ; [L1126] int tmp___4 = __VERIFIER_nondet_int() ; [L1127] int tmp___5 = __VERIFIER_nondet_int() ; [L1128] int tmp___6 = __VERIFIER_nondet_int() ; [L1129] int tmp___7 ; [L1130] long tmp___8 = __VERIFIER_nondet_long() ; [L1131] int tmp___9 = __VERIFIER_nondet_int() ; [L1132] int tmp___10 = __VERIFIER_nondet_int() ; [L1133] int blastFlag ; [L1137] blastFlag = 0 [L1138] s->hit=__VERIFIER_nondet_int () [L1139] s->state = 8464 [L1140] tmp = __VERIFIER_nondet_int() [L1141] Time = tmp [L1142] cb = (void (*)())((void *)0) [L1143] ret = -1 [L1144] skip = 0 [L1145] got_new_session = 0 [L1146] EXPR s->info_callback VAL [init=1, SSLv3_server_data={21:0}] [L1146] COND TRUE (unsigned long )s->info_callback != (unsigned long )((void *)0) [L1147] EXPR s->info_callback [L1147] cb = s->info_callback [L1151] EXPR s->in_handshake [L1151] s->in_handshake += 1 [L1152] COND FALSE !(tmp___1 & 12288) VAL [init=1, SSLv3_server_data={21:0}] [L1161] EXPR s->cert VAL [init=1, SSLv3_server_data={21:0}] [L1161] COND FALSE !((unsigned long )s->cert == (unsigned long )((void *)0)) [L1167] COND TRUE 1 VAL [init=1, SSLv3_server_data={21:0}] [L1169] EXPR s->state [L1169] state = s->state [L1170] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1170] COND FALSE !(s->state == 12292) [L1173] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1173] COND FALSE !(s->state == 16384) [L1176] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1176] COND FALSE !(s->state == 8192) [L1179] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1179] COND FALSE !(s->state == 24576) [L1182] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1182] COND FALSE !(s->state == 8195) [L1185] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1185] COND FALSE !(s->state == 8480) [L1188] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1188] COND FALSE !(s->state == 8481) [L1191] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1191] COND FALSE !(s->state == 8482) [L1194] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1194] COND TRUE s->state == 8464 [L1354] s->shutdown = 0 [L1355] ret = __VERIFIER_nondet_int() [L1356] COND TRUE blastFlag == 0 [L1357] blastFlag = 1 VAL [init=1, SSLv3_server_data={21:0}] [L1361] COND FALSE !(ret <= 0) [L1366] got_new_session = 1 [L1367] s->state = 8496 [L1368] s->init_num = 0 VAL [init=1, SSLv3_server_data={21:0}] [L1693] EXPR s->s3 [L1693] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={21:0}] [L1693] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1722] skip = 0 VAL [init=1, SSLv3_server_data={21:0}] [L1167] COND TRUE 1 VAL [init=1, SSLv3_server_data={21:0}] [L1169] EXPR s->state [L1169] state = s->state [L1170] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1170] COND FALSE !(s->state == 12292) [L1173] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1173] COND FALSE !(s->state == 16384) [L1176] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1176] COND FALSE !(s->state == 8192) [L1179] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1179] COND FALSE !(s->state == 24576) [L1182] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1182] COND FALSE !(s->state == 8195) [L1185] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1185] COND FALSE !(s->state == 8480) [L1188] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1188] COND FALSE !(s->state == 8481) [L1191] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1191] COND FALSE !(s->state == 8482) [L1194] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1194] COND FALSE !(s->state == 8464) [L1197] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1197] COND FALSE !(s->state == 8465) [L1200] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1200] COND FALSE !(s->state == 8466) [L1203] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1203] COND TRUE s->state == 8496 [L1372] ret = __VERIFIER_nondet_int() [L1373] COND TRUE blastFlag == 1 [L1374] blastFlag = 2 VAL [init=1, SSLv3_server_data={21:0}] [L1378] COND FALSE !(ret <= 0) [L1383] s->hit VAL [init=1, SSLv3_server_data={21:0}] [L1383] COND TRUE s->hit [L1384] s->state = 8656 VAL [init=1, SSLv3_server_data={21:0}] [L1388] s->init_num = 0 VAL [init=1, SSLv3_server_data={21:0}] [L1693] EXPR s->s3 [L1693] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={21:0}] [L1693] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1722] skip = 0 VAL [init=1, SSLv3_server_data={21:0}] [L1167] COND TRUE 1 VAL [init=1, SSLv3_server_data={21:0}] [L1169] EXPR s->state [L1169] state = s->state [L1170] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1170] COND FALSE !(s->state == 12292) [L1173] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1173] COND FALSE !(s->state == 16384) [L1176] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1176] COND FALSE !(s->state == 8192) [L1179] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1179] COND FALSE !(s->state == 24576) [L1182] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1182] COND FALSE !(s->state == 8195) [L1185] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1185] COND FALSE !(s->state == 8480) [L1188] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1188] COND FALSE !(s->state == 8481) [L1191] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1191] COND FALSE !(s->state == 8482) [L1194] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1194] COND FALSE !(s->state == 8464) [L1197] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1197] COND FALSE !(s->state == 8465) [L1200] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1200] COND FALSE !(s->state == 8466) [L1203] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1203] COND FALSE !(s->state == 8496) [L1206] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1206] COND FALSE !(s->state == 8497) [L1209] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1209] COND FALSE !(s->state == 8512) [L1212] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1212] COND FALSE !(s->state == 8513) [L1215] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1215] COND FALSE !(s->state == 8528) [L1218] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1218] COND FALSE !(s->state == 8529) [L1221] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1221] COND FALSE !(s->state == 8544) [L1224] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1224] COND FALSE !(s->state == 8545) [L1227] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1227] COND FALSE !(s->state == 8560) [L1230] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1230] COND FALSE !(s->state == 8561) [L1233] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1233] COND FALSE !(s->state == 8448) [L1236] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1236] COND FALSE !(s->state == 8576) [L1239] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1239] COND FALSE !(s->state == 8577) [L1242] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1242] COND FALSE !(s->state == 8592) [L1245] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1245] COND FALSE !(s->state == 8593) [L1248] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1248] COND FALSE !(s->state == 8608) [L1251] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1251] COND FALSE !(s->state == 8609) [L1254] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1254] COND FALSE !(s->state == 8640) [L1257] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1257] COND FALSE !(s->state == 8641) [L1260] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1260] COND TRUE s->state == 8656 [L1586] EXPR s->session [L1586] EXPR s->s3 [L1586] EXPR (s->s3)->tmp.new_cipher [L1586] (s->session)->cipher = (s->s3)->tmp.new_cipher [L1587] COND FALSE !(! tmp___9) [L1593] ret = __VERIFIER_nondet_int() [L1594] COND TRUE blastFlag == 2 [L1595] blastFlag = 3 VAL [init=1, SSLv3_server_data={21:0}] [L1599] COND FALSE !(ret <= 0) [L1604] s->state = 8672 [L1605] s->init_num = 0 VAL [init=1, SSLv3_server_data={21:0}] [L1606] COND FALSE !(! tmp___10) VAL [init=1, SSLv3_server_data={21:0}] [L1693] EXPR s->s3 [L1693] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={21:0}] [L1693] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1722] skip = 0 VAL [init=1, SSLv3_server_data={21:0}] [L1167] COND TRUE 1 VAL [init=1, SSLv3_server_data={21:0}] [L1169] EXPR s->state [L1169] state = s->state [L1170] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1170] COND FALSE !(s->state == 12292) [L1173] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1173] COND FALSE !(s->state == 16384) [L1176] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1176] COND FALSE !(s->state == 8192) [L1179] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1179] COND FALSE !(s->state == 24576) [L1182] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1182] COND FALSE !(s->state == 8195) [L1185] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1185] COND FALSE !(s->state == 8480) [L1188] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1188] COND FALSE !(s->state == 8481) [L1191] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1191] COND FALSE !(s->state == 8482) [L1194] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1194] COND FALSE !(s->state == 8464) [L1197] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1197] COND FALSE !(s->state == 8465) [L1200] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1200] COND FALSE !(s->state == 8466) [L1203] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1203] COND FALSE !(s->state == 8496) [L1206] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1206] COND FALSE !(s->state == 8497) [L1209] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1209] COND FALSE !(s->state == 8512) [L1212] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1212] COND FALSE !(s->state == 8513) [L1215] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1215] COND FALSE !(s->state == 8528) [L1218] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1218] COND FALSE !(s->state == 8529) [L1221] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1221] COND FALSE !(s->state == 8544) [L1224] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1224] COND FALSE !(s->state == 8545) [L1227] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1227] COND FALSE !(s->state == 8560) [L1230] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1230] COND FALSE !(s->state == 8561) [L1233] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1233] COND FALSE !(s->state == 8448) [L1236] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1236] COND FALSE !(s->state == 8576) [L1239] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1239] COND FALSE !(s->state == 8577) [L1242] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1242] COND FALSE !(s->state == 8592) [L1245] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1245] COND FALSE !(s->state == 8593) [L1248] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1248] COND FALSE !(s->state == 8608) [L1251] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1251] COND FALSE !(s->state == 8609) [L1254] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1254] COND FALSE !(s->state == 8640) [L1257] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1257] COND FALSE !(s->state == 8641) [L1260] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1260] COND FALSE !(s->state == 8656) [L1263] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1263] COND FALSE !(s->state == 8657) [L1266] EXPR s->state VAL [init=1, SSLv3_server_data={21:0}] [L1266] COND TRUE s->state == 8672 [L1615] ret = __VERIFIER_nondet_int() [L1616] COND TRUE blastFlag == 3 VAL [init=1, SSLv3_server_data={21:0}] [L1734] reach_error() VAL [init=1, SSLv3_server_data={21:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 145 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 102.3s, OverallIterations: 42, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 95.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 7823 SDtfs, 2119 SDslu, 11520 SDs, 0 SdLazy, 7144 SolverSat, 347 SolverUnsat, 39 SolverUnknown, 0 SolverNotchecked, 90.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 233 GetRequests, 83 SyntacticMatches, 29 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=508occurred in iteration=40, InterpolantAutomatonStates: 165, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 41 MinimizatonAttempts, 934 StatesRemovedByMinimization, 37 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 3709 NumberOfCodeBlocks, 3709 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 3541 ConstructedInterpolants, 0 QuantifiedInterpolants, 9600 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 41 InterpolantComputations, 41 PerfectInterpolantSequences, 1839/1839 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-28 23:57:22,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15bd907a-afe0-487d-a60d-5853a45f0743/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:57:25,621 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:57:25,625 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:57:25,692 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:57:25,693 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:57:25,695 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:57:25,697 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:57:25,701 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:57:25,707 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:57:25,709 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:57:25,710 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:57:25,714 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:57:25,716 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:57:25,721 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:57:25,723 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:57:25,727 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:57:25,731 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:57:25,738 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:57:25,741 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:57:25,746 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:57:25,753 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:57:25,755 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:57:25,757 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:57:25,760 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:57:25,766 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:57:25,767 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:57:25,767 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:57:25,768 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:57:25,769 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:57:25,770 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:57:25,770 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:57:25,772 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:57:25,773 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:57:25,774 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:57:25,786 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:57:25,786 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:57:25,787 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:57:25,788 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:57:25,788 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:57:25,791 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:57:25,793 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:57:25,795 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15bd907a-afe0-487d-a60d-5853a45f0743/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-28 23:57:25,847 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:57:25,847 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:57:25,848 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:57:25,848 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:57:25,851 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:57:25,851 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:57:25,851 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:57:25,852 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:57:25,852 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:57:25,852 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:57:25,854 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:57:25,854 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:57:25,854 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:57:25,855 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:57:25,855 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 23:57:25,855 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 23:57:25,855 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:57:25,856 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:57:25,856 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:57:25,856 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:57:25,857 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:57:25,857 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:57:25,857 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:57:25,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:57:25,858 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:57:25,858 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:57:25,858 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:57:25,859 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 23:57:25,859 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 23:57:25,859 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:57:25,859 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:57:25,860 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:57:25,860 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:57:25,861 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 23:57:25,861 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_15bd907a-afe0-487d-a60d-5853a45f0743/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15bd907a-afe0-487d-a60d-5853a45f0743/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3fe517c51c5e8fb31577c2325f977891c14909f163a953939dc0a15f16ec6d9 [2021-10-28 23:57:26,372 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:57:26,397 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:57:26,400 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:57:26,402 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:57:26,403 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:57:26,404 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15bd907a-afe0-487d-a60d-5853a45f0743/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/openssl/s3_srvr.blast.03.i.cil.c [2021-10-28 23:57:26,489 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15bd907a-afe0-487d-a60d-5853a45f0743/bin/uautomizer-GMMbpWq8iD/data/4ca5f04a1/bf360534fd334992a12a88aa489e439d/FLAGe3cb1bbef [2021-10-28 23:57:27,390 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:57:27,391 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15bd907a-afe0-487d-a60d-5853a45f0743/sv-benchmarks/c/openssl/s3_srvr.blast.03.i.cil.c [2021-10-28 23:57:27,426 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15bd907a-afe0-487d-a60d-5853a45f0743/bin/uautomizer-GMMbpWq8iD/data/4ca5f04a1/bf360534fd334992a12a88aa489e439d/FLAGe3cb1bbef [2021-10-28 23:57:27,517 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15bd907a-afe0-487d-a60d-5853a45f0743/bin/uautomizer-GMMbpWq8iD/data/4ca5f04a1/bf360534fd334992a12a88aa489e439d [2021-10-28 23:57:27,520 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:57:27,522 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:57:27,524 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:57:27,525 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:57:27,529 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:57:27,530 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:57:27" (1/1) ... [2021-10-28 23:57:27,532 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44eebff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:57:27, skipping insertion in model container [2021-10-28 23:57:27,532 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:57:27" (1/1) ... [2021-10-28 23:57:27,541 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:57:27,618 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:57:28,176 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_15bd907a-afe0-487d-a60d-5853a45f0743/sv-benchmarks/c/openssl/s3_srvr.blast.03.i.cil.c[72493,72506] [2021-10-28 23:57:28,188 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:57:28,211 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:57:28,388 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_15bd907a-afe0-487d-a60d-5853a45f0743/sv-benchmarks/c/openssl/s3_srvr.blast.03.i.cil.c[72493,72506] [2021-10-28 23:57:28,393 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:57:28,417 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:57:28,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:57:28 WrapperNode [2021-10-28 23:57:28,418 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:57:28,419 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:57:28,420 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:57:28,420 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:57:28,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:57:28" (1/1) ... [2021-10-28 23:57:28,468 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:57:28" (1/1) ... [2021-10-28 23:57:28,545 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:57:28,546 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:57:28,546 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:57:28,547 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:57:28,562 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:57:28" (1/1) ... [2021-10-28 23:57:28,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:57:28" (1/1) ... [2021-10-28 23:57:28,583 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:57:28" (1/1) ... [2021-10-28 23:57:28,583 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:57:28" (1/1) ... [2021-10-28 23:57:28,677 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:57:28" (1/1) ... [2021-10-28 23:57:28,689 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:57:28" (1/1) ... [2021-10-28 23:57:28,694 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:57:28" (1/1) ... [2021-10-28 23:57:28,702 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:57:28,704 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:57:28,704 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:57:28,704 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:57:28,705 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:57:28" (1/1) ... [2021-10-28 23:57:28,714 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:57:28,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15bd907a-afe0-487d-a60d-5853a45f0743/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:57:28,768 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15bd907a-afe0-487d-a60d-5853a45f0743/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:57:28,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15bd907a-afe0-487d-a60d-5853a45f0743/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:57:28,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 23:57:28,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 23:57:28,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:57:28,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-28 23:57:28,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 23:57:28,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 23:57:28,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:57:28,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:57:28,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-28 23:57:29,192 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-28 23:57:34,011 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-10-28 23:57:34,012 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-10-28 23:57:34,023 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:57:34,024 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-28 23:57:34,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:57:34 BoogieIcfgContainer [2021-10-28 23:57:34,027 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:57:34,029 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:57:34,030 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:57:34,033 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:57:34,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:57:27" (1/3) ... [2021-10-28 23:57:34,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ad7d748 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:57:34, skipping insertion in model container [2021-10-28 23:57:34,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:57:28" (2/3) ... [2021-10-28 23:57:34,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ad7d748 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:57:34, skipping insertion in model container [2021-10-28 23:57:34,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:57:34" (3/3) ... [2021-10-28 23:57:34,037 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.03.i.cil.c [2021-10-28 23:57:34,044 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:57:34,045 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 23:57:34,107 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:57:34,115 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 [2021-10-28 23:57:34,116 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 23:57:34,140 INFO L276 IsEmpty]: Start isEmpty. Operand has 145 states, 143 states have (on average 1.7062937062937062) internal successors, (244), 144 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:57:34,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-28 23:57:34,152 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:57:34,159 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] [2021-10-28 23:57:34,160 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:57:34,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:57:34,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1430119920, now seen corresponding path program 1 times [2021-10-28 23:57:34,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:57:34,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [264697607] [2021-10-28 23:57:34,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:57:34,193 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:57:34,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15bd907a-afe0-487d-a60d-5853a45f0743/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:57:34,195 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15bd907a-afe0-487d-a60d-5853a45f0743/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:57:34,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15bd907a-afe0-487d-a60d-5853a45f0743/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 23:57:34,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:57:34,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:57:34,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:57:34,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:57:34,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:57:35,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:57:35,390 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:57:35,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [264697607] [2021-10-28 23:57:35,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [264697607] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:57:35,392 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:57:35,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-28 23:57:35,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624585809] [2021-10-28 23:57:35,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:57:35,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:57:35,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:57:35,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:57:35,422 INFO L87 Difference]: Start difference. First operand has 145 states, 143 states have (on average 1.7062937062937062) internal successors, (244), 144 states have internal predecessors, (244), 0 states have call successors, (0), 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 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:57:35,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:57:35,634 INFO L93 Difference]: Finished difference Result 539 states and 915 transitions. [2021-10-28 23:57:35,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:57:35,636 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-10-28 23:57:35,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:57:35,663 INFO L225 Difference]: With dead ends: 539 [2021-10-28 23:57:35,664 INFO L226 Difference]: Without dead ends: 365 [2021-10-28 23:57:35,668 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:57:35,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2021-10-28 23:57:35,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2021-10-28 23:57:35,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 364 states have (on average 1.521978021978022) internal successors, (554), 364 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:57:35,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 554 transitions. [2021-10-28 23:57:35,766 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 554 transitions. Word has length 47 [2021-10-28 23:57:35,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:57:35,767 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 554 transitions. [2021-10-28 23:57:35,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:57:35,768 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 554 transitions. [2021-10-28 23:57:35,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-28 23:57:35,776 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:57:35,776 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-28 23:57:35,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15bd907a-afe0-487d-a60d-5853a45f0743/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:57:35,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15bd907a-afe0-487d-a60d-5853a45f0743/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:57:35,986 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:57:35,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:57:35,989 INFO L85 PathProgramCache]: Analyzing trace with hash -430845807, now seen corresponding path program 1 times [2021-10-28 23:57:35,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:57:35,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1134031894] [2021-10-28 23:57:35,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:57:35,991 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:57:35,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15bd907a-afe0-487d-a60d-5853a45f0743/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:57:35,993 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15bd907a-afe0-487d-a60d-5853a45f0743/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:57:36,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15bd907a-afe0-487d-a60d-5853a45f0743/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 23:57:36,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:57:36,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:57:36,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:57:36,988 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:57:36,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:57:37,660 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:57:37,662 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:57:37,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1134031894] [2021-10-28 23:57:37,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1134031894] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:57:37,664 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:57:37,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-28 23:57:37,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001116433] [2021-10-28 23:57:37,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:57:37,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:57:37,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:57:37,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:57:37,675 INFO L87 Difference]: Start difference. First operand 365 states and 554 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:57:37,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:57:37,838 INFO L93 Difference]: Finished difference Result 836 states and 1275 transitions. [2021-10-28 23:57:37,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:57:37,839 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 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 105 [2021-10-28 23:57:37,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:57:37,845 INFO L225 Difference]: With dead ends: 836 [2021-10-28 23:57:37,845 INFO L226 Difference]: Without dead ends: 600 [2021-10-28 23:57:37,848 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:57:37,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2021-10-28 23:57:37,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 600. [2021-10-28 23:57:37,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 599 states have (on average 1.5175292153589315) internal successors, (909), 599 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:57:37,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 909 transitions. [2021-10-28 23:57:37,952 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 909 transitions. Word has length 105 [2021-10-28 23:57:37,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:57:37,955 INFO L470 AbstractCegarLoop]: Abstraction has 600 states and 909 transitions. [2021-10-28 23:57:37,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:57:37,965 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 909 transitions. [2021-10-28 23:57:37,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-10-28 23:57:37,976 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:57:37,976 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-28 23:57:38,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15bd907a-afe0-487d-a60d-5853a45f0743/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:57:38,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15bd907a-afe0-487d-a60d-5853a45f0743/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:57:38,193 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:57:38,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:57:38,194 INFO L85 PathProgramCache]: Analyzing trace with hash 42738551, now seen corresponding path program 1 times [2021-10-28 23:57:38,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:57:38,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [506508847] [2021-10-28 23:57:38,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:57:38,196 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:57:38,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15bd907a-afe0-487d-a60d-5853a45f0743/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:57:38,197 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15bd907a-afe0-487d-a60d-5853a45f0743/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:57:38,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15bd907a-afe0-487d-a60d-5853a45f0743/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 23:57:38,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:57:38,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-28 23:57:38,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:57:38,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-28 23:57:38,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-28 23:57:39,005 INFO L354 Elim1Store]: treesize reduction 96, result has 16.5 percent of original size [2021-10-28 23:57:39,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 22 [2021-10-28 23:57:39,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 23:57:39,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 23:57:39,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 23:57:39,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 22 [2021-10-28 23:57:39,175 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-10-28 23:57:39,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 13 [2021-10-28 23:57:39,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 23:57:39,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-10-28 23:57:39,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-10-28 23:57:39,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-10-28 23:57:39,799 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-10-28 23:57:39,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:57:40,744 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-10-28 23:57:40,744 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:57:40,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [506508847] [2021-10-28 23:57:40,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [506508847] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:57:40,745 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:57:40,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-28 23:57:40,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585509262] [2021-10-28 23:57:40,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:57:40,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:57:40,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:57:40,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:57:40,748 INFO L87 Difference]: Start difference. First operand 600 states and 909 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:57:54,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:57:54,013 INFO L93 Difference]: Finished difference Result 1197 states and 1814 transitions. [2021-10-28 23:57:54,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:57:54,016 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2021-10-28 23:57:54,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:57:54,021 INFO L225 Difference]: With dead ends: 1197 [2021-10-28 23:57:54,022 INFO L226 Difference]: Without dead ends: 600 [2021-10-28 23:57:54,025 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 245 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:57:54,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2021-10-28 23:57:54,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 600. [2021-10-28 23:57:54,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 599 states have (on average 1.5158597662771285) internal successors, (908), 599 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:57:54,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 908 transitions. [2021-10-28 23:57:54,055 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 908 transitions. Word has length 127 [2021-10-28 23:57:54,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:57:54,064 INFO L470 AbstractCegarLoop]: Abstraction has 600 states and 908 transitions. [2021-10-28 23:57:54,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:57:54,065 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 908 transitions. [2021-10-28 23:57:54,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-10-28 23:57:54,068 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:57:54,069 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-10-28 23:57:54,091 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15bd907a-afe0-487d-a60d-5853a45f0743/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-28 23:57:54,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15bd907a-afe0-487d-a60d-5853a45f0743/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:57:54,288 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:57:54,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:57:54,289 INFO L85 PathProgramCache]: Analyzing trace with hash -663858055, now seen corresponding path program 1 times [2021-10-28 23:57:54,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:57:54,291 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [372838105] [2021-10-28 23:57:54,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:57:54,292 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:57:54,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15bd907a-afe0-487d-a60d-5853a45f0743/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:57:54,293 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15bd907a-afe0-487d-a60d-5853a45f0743/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:57:54,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15bd907a-afe0-487d-a60d-5853a45f0743/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-28 23:57:55,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:57:55,789 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:57:56,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:57:56,950 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-28 23:57:56,950 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:57:56,951 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:57:56,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15bd907a-afe0-487d-a60d-5853a45f0743/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-28 23:57:57,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15bd907a-afe0-487d-a60d-5853a45f0743/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:57:57,181 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-10-28 23:57:57,185 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:57:57,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:57:57 BoogieIcfgContainer [2021-10-28 23:57:57,375 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:57:57,376 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:57:57,377 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:57:57,377 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:57:57,378 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:57:34" (3/4) ... [2021-10-28 23:57:57,380 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 23:57:57,575 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15bd907a-afe0-487d-a60d-5853a45f0743/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:57:57,576 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:57:57,577 INFO L168 Benchmark]: Toolchain (without parser) took 30054.59 ms. Allocated memory was 58.7 MB in the beginning and 123.7 MB in the end (delta: 65.0 MB). Free memory was 34.1 MB in the beginning and 79.0 MB in the end (delta: -44.8 MB). Peak memory consumption was 67.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:57:57,577 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 58.7 MB. Free memory was 39.0 MB in the beginning and 39.0 MB in the end (delta: 28.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:57:57,578 INFO L168 Benchmark]: CACSL2BoogieTranslator took 894.05 ms. Allocated memory was 58.7 MB in the beginning and 73.4 MB in the end (delta: 14.7 MB). Free memory was 34.0 MB in the beginning and 45.0 MB in the end (delta: -11.0 MB). Peak memory consumption was 15.7 MB. Max. memory is 16.1 GB. [2021-10-28 23:57:57,578 INFO L168 Benchmark]: Boogie Procedure Inliner took 125.86 ms. Allocated memory is still 73.4 MB. Free memory was 45.0 MB in the beginning and 40.3 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:57:57,578 INFO L168 Benchmark]: Boogie Preprocessor took 156.50 ms. Allocated memory is still 73.4 MB. Free memory was 40.3 MB in the beginning and 48.5 MB in the end (delta: -8.2 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. [2021-10-28 23:57:57,579 INFO L168 Benchmark]: RCFGBuilder took 5323.44 ms. Allocated memory was 73.4 MB in the beginning and 102.8 MB in the end (delta: 29.4 MB). Free memory was 48.2 MB in the beginning and 55.5 MB in the end (delta: -7.3 MB). Peak memory consumption was 24.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:57:57,579 INFO L168 Benchmark]: TraceAbstraction took 23346.40 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 55.2 MB in the beginning and 42.0 MB in the end (delta: 13.2 MB). Peak memory consumption was 34.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:57:57,580 INFO L168 Benchmark]: Witness Printer took 199.38 ms. Allocated memory is still 123.7 MB. Free memory was 42.0 MB in the beginning and 79.0 MB in the end (delta: -37.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:57:57,582 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 58.7 MB. Free memory was 39.0 MB in the beginning and 39.0 MB in the end (delta: 28.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 894.05 ms. Allocated memory was 58.7 MB in the beginning and 73.4 MB in the end (delta: 14.7 MB). Free memory was 34.0 MB in the beginning and 45.0 MB in the end (delta: -11.0 MB). Peak memory consumption was 15.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 125.86 ms. Allocated memory is still 73.4 MB. Free memory was 45.0 MB in the beginning and 40.3 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 156.50 ms. Allocated memory is still 73.4 MB. Free memory was 40.3 MB in the beginning and 48.5 MB in the end (delta: -8.2 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. * RCFGBuilder took 5323.44 ms. Allocated memory was 73.4 MB in the beginning and 102.8 MB in the end (delta: 29.4 MB). Free memory was 48.2 MB in the beginning and 55.5 MB in the end (delta: -7.3 MB). Peak memory consumption was 24.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 23346.40 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 55.2 MB in the beginning and 42.0 MB in the end (delta: 13.2 MB). Peak memory consumption was 34.2 MB. Max. memory is 16.1 GB. * Witness Printer took 199.38 ms. Allocated memory is still 123.7 MB. Free memory was 42.0 MB in the beginning and 79.0 MB in the end (delta: -37.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 1734]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1054] static int init = 1; [L1055] static SSL_METHOD SSLv3_server_data ; VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1077] SSL *s ; [L1078] int tmp ; [L1082] s = malloc(sizeof(SSL)) [L1083] s->s3 = malloc(sizeof(struct ssl3_state_st)) [L1084] s->ctx = malloc(sizeof(SSL_CTX)) [L1085] s->session = malloc(sizeof(SSL_SESSION)) [L1086] s->state = 8464 [L1088] s->info_callback = (void (*) ()) __VERIFIER_nondet_ulong() [L1089] s->options = __VERIFIER_nondet_ulong() [L1090] s->verify_mode = __VERIFIER_nondet_int() [L1091] EXPR s->session [L1091] (s->session)->peer = (struct x509_st*) __VERIFIER_nondet_ulong() [L1092] EXPR s->s3 [L1092] (s->s3)->tmp.cert_request = __VERIFIER_nondet_int() [L1093] EXPR s->s3 [L1093] (s->s3)->tmp.new_cipher = malloc(sizeof(struct ssl_cipher_st)) [L1094] EXPR s->s3 [L1094] EXPR (s->s3)->tmp.new_cipher [L1094] ((s->s3)->tmp.new_cipher)->algorithms = __VERIFIER_nondet_ulong() [L1095] EXPR s->s3 [L1095] EXPR (s->s3)->tmp.new_cipher [L1095] ((s->s3)->tmp.new_cipher)->algo_strength = __VERIFIER_nondet_ulong() [L1096] COND FALSE !(__VERIFIER_nondet_int()) [L1102] s->cert = malloc(sizeof(struct cert_st)) [L1103] EXPR s->cert [L1103] (s->cert)->pkeys[0].privatekey = (struct evp_pkey_st*) __VERIFIER_nondet_ulong() [L1112] BUF_MEM *buf ; [L1113] unsigned long l ; [L1114] unsigned long Time ; [L1115] unsigned long tmp ; [L1116] void (*cb)() ; [L1117] long num1 ; [L1118] int ret ; [L1119] int new_state ; [L1120] int state ; [L1121] int skip ; [L1122] int got_new_session ; [L1123] int tmp___1 = __VERIFIER_nondet_int() ; [L1124] int tmp___2 = __VERIFIER_nondet_int() ; [L1125] int tmp___3 = __VERIFIER_nondet_int() ; [L1126] int tmp___4 = __VERIFIER_nondet_int() ; [L1127] int tmp___5 = __VERIFIER_nondet_int() ; [L1128] int tmp___6 = __VERIFIER_nondet_int() ; [L1129] int tmp___7 ; [L1130] long tmp___8 = __VERIFIER_nondet_long() ; [L1131] int tmp___9 = __VERIFIER_nondet_int() ; [L1132] int tmp___10 = __VERIFIER_nondet_int() ; [L1133] int blastFlag ; [L1137] blastFlag = 0 [L1138] s->hit=__VERIFIER_nondet_int () [L1139] s->state = 8464 [L1140] tmp = __VERIFIER_nondet_int() [L1141] Time = tmp [L1142] cb = (void (*)())((void *)0) [L1143] ret = -1 [L1144] skip = 0 [L1145] got_new_session = 0 [L1146] EXPR s->info_callback VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1146] COND TRUE (unsigned long )s->info_callback != (unsigned long )((void *)0) [L1147] EXPR s->info_callback [L1147] cb = s->info_callback [L1151] EXPR s->in_handshake [L1151] s->in_handshake += 1 [L1152] COND FALSE !(tmp___1 & 12288) VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1161] EXPR s->cert VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1161] COND FALSE !((unsigned long )s->cert == (unsigned long )((void *)0)) [L1167] COND TRUE 1 VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1169] EXPR s->state [L1169] state = s->state [L1170] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1170] COND FALSE !(s->state == 12292) [L1173] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1173] COND FALSE !(s->state == 16384) [L1176] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1176] COND FALSE !(s->state == 8192) [L1179] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1179] COND FALSE !(s->state == 24576) [L1182] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1182] COND FALSE !(s->state == 8195) [L1185] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1185] COND FALSE !(s->state == 8480) [L1188] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1188] COND FALSE !(s->state == 8481) [L1191] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1191] COND FALSE !(s->state == 8482) [L1194] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1194] COND TRUE s->state == 8464 [L1354] s->shutdown = 0 [L1355] ret = __VERIFIER_nondet_int() [L1356] COND TRUE blastFlag == 0 [L1357] blastFlag = 1 VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1361] COND FALSE !(ret <= 0) [L1366] got_new_session = 1 [L1367] s->state = 8496 [L1368] s->init_num = 0 VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1693] EXPR s->s3 [L1693] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1693] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1722] skip = 0 VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1167] COND TRUE 1 VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1169] EXPR s->state [L1169] state = s->state [L1170] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1170] COND FALSE !(s->state == 12292) [L1173] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1173] COND FALSE !(s->state == 16384) [L1176] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1176] COND FALSE !(s->state == 8192) [L1179] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1179] COND FALSE !(s->state == 24576) [L1182] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1182] COND FALSE !(s->state == 8195) [L1185] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1185] COND FALSE !(s->state == 8480) [L1188] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1188] COND FALSE !(s->state == 8481) [L1191] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1191] COND FALSE !(s->state == 8482) [L1194] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1194] COND FALSE !(s->state == 8464) [L1197] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1197] COND FALSE !(s->state == 8465) [L1200] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1200] COND FALSE !(s->state == 8466) [L1203] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1203] COND TRUE s->state == 8496 [L1372] ret = __VERIFIER_nondet_int() [L1373] COND TRUE blastFlag == 1 [L1374] blastFlag = 2 VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1378] COND FALSE !(ret <= 0) [L1383] s->hit VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1383] COND TRUE s->hit [L1384] s->state = 8656 VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1388] s->init_num = 0 VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1693] EXPR s->s3 [L1693] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1693] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1722] skip = 0 VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1167] COND TRUE 1 VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1169] EXPR s->state [L1169] state = s->state [L1170] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1170] COND FALSE !(s->state == 12292) [L1173] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1173] COND FALSE !(s->state == 16384) [L1176] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1176] COND FALSE !(s->state == 8192) [L1179] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1179] COND FALSE !(s->state == 24576) [L1182] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1182] COND FALSE !(s->state == 8195) [L1185] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1185] COND FALSE !(s->state == 8480) [L1188] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1188] COND FALSE !(s->state == 8481) [L1191] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1191] COND FALSE !(s->state == 8482) [L1194] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1194] COND FALSE !(s->state == 8464) [L1197] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1197] COND FALSE !(s->state == 8465) [L1200] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1200] COND FALSE !(s->state == 8466) [L1203] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1203] COND FALSE !(s->state == 8496) [L1206] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1206] COND FALSE !(s->state == 8497) [L1209] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1209] COND FALSE !(s->state == 8512) [L1212] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1212] COND FALSE !(s->state == 8513) [L1215] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1215] COND FALSE !(s->state == 8528) [L1218] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1218] COND FALSE !(s->state == 8529) [L1221] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1221] COND FALSE !(s->state == 8544) [L1224] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1224] COND FALSE !(s->state == 8545) [L1227] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1227] COND FALSE !(s->state == 8560) [L1230] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1230] COND FALSE !(s->state == 8561) [L1233] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1233] COND FALSE !(s->state == 8448) [L1236] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1236] COND FALSE !(s->state == 8576) [L1239] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1239] COND FALSE !(s->state == 8577) [L1242] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1242] COND FALSE !(s->state == 8592) [L1245] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1245] COND FALSE !(s->state == 8593) [L1248] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1248] COND FALSE !(s->state == 8608) [L1251] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1251] COND FALSE !(s->state == 8609) [L1254] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1254] COND FALSE !(s->state == 8640) [L1257] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1257] COND FALSE !(s->state == 8641) [L1260] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1260] COND TRUE s->state == 8656 [L1586] EXPR s->session [L1586] EXPR s->s3 [L1586] EXPR (s->s3)->tmp.new_cipher [L1586] (s->session)->cipher = (s->s3)->tmp.new_cipher [L1587] COND FALSE !(! tmp___9) [L1593] ret = __VERIFIER_nondet_int() [L1594] COND TRUE blastFlag == 2 [L1595] blastFlag = 3 VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1599] COND FALSE !(ret <= 0) [L1604] s->state = 8672 [L1605] s->init_num = 0 VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1606] COND FALSE !(! tmp___10) VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1693] EXPR s->s3 [L1693] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1693] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1722] skip = 0 VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1167] COND TRUE 1 VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1169] EXPR s->state [L1169] state = s->state [L1170] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1170] COND FALSE !(s->state == 12292) [L1173] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1173] COND FALSE !(s->state == 16384) [L1176] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1176] COND FALSE !(s->state == 8192) [L1179] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1179] COND FALSE !(s->state == 24576) [L1182] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1182] COND FALSE !(s->state == 8195) [L1185] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1185] COND FALSE !(s->state == 8480) [L1188] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1188] COND FALSE !(s->state == 8481) [L1191] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1191] COND FALSE !(s->state == 8482) [L1194] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1194] COND FALSE !(s->state == 8464) [L1197] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1197] COND FALSE !(s->state == 8465) [L1200] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1200] COND FALSE !(s->state == 8466) [L1203] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1203] COND FALSE !(s->state == 8496) [L1206] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1206] COND FALSE !(s->state == 8497) [L1209] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1209] COND FALSE !(s->state == 8512) [L1212] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1212] COND FALSE !(s->state == 8513) [L1215] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1215] COND FALSE !(s->state == 8528) [L1218] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1218] COND FALSE !(s->state == 8529) [L1221] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1221] COND FALSE !(s->state == 8544) [L1224] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1224] COND FALSE !(s->state == 8545) [L1227] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1227] COND FALSE !(s->state == 8560) [L1230] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1230] COND FALSE !(s->state == 8561) [L1233] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1233] COND FALSE !(s->state == 8448) [L1236] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1236] COND FALSE !(s->state == 8576) [L1239] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1239] COND FALSE !(s->state == 8577) [L1242] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1242] COND FALSE !(s->state == 8592) [L1245] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1245] COND FALSE !(s->state == 8593) [L1248] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1248] COND FALSE !(s->state == 8608) [L1251] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1251] COND FALSE !(s->state == 8609) [L1254] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1254] COND FALSE !(s->state == 8640) [L1257] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1257] COND FALSE !(s->state == 8641) [L1260] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1260] COND FALSE !(s->state == 8656) [L1263] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1263] COND FALSE !(s->state == 8657) [L1266] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1266] COND TRUE s->state == 8672 [L1615] ret = __VERIFIER_nondet_int() [L1616] COND TRUE blastFlag == 3 VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1734] reach_error() VAL [init=1, SSLv3_server_data={-1073741793:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 145 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 23.0s, OverallIterations: 4, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 13.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 790 SDtfs, 665 SDslu, 1476 SDs, 0 SdLazy, 374 SolverSat, 20 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 12.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 554 GetRequests, 541 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=600occurred in iteration=2, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 406 NumberOfCodeBlocks, 406 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 552 ConstructedInterpolants, 1 QuantifiedInterpolants, 1163 SizeOfPredicates, 12 NumberOfNonLiveVariables, 792 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 322/322 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-28 23:57:57,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15bd907a-afe0-487d-a60d-5853a45f0743/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...