./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-2.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_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/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_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/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_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/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 a1fff1f2750aedbe7119b44ad3cdc8a2dbfa05ad8147a422ae9aeb0054d6e253 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/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_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/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_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/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 a1fff1f2750aedbe7119b44ad3cdc8a2dbfa05ad8147a422ae9aeb0054d6e253 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 23:01:12,471 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:01:12,473 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:01:12,520 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:01:12,521 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:01:12,524 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:01:12,527 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:01:12,530 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:01:12,533 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:01:12,539 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:01:12,540 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:01:12,542 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:01:12,542 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:01:12,545 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:01:12,549 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:01:12,554 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:01:12,556 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:01:12,557 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:01:12,559 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:01:12,569 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:01:12,571 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:01:12,572 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:01:12,576 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:01:12,577 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:01:12,586 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:01:12,587 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:01:12,587 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:01:12,589 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:01:12,590 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:01:12,592 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:01:12,593 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:01:12,594 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:01:12,596 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:01:12,597 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:01:12,599 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:01:12,599 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:01:12,600 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:01:12,600 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:01:12,600 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:01:12,601 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:01:12,602 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:01:12,603 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 23:01:12,640 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:01:12,641 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:01:12,641 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:01:12,641 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:01:12,642 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:01:12,643 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:01:12,643 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:01:12,643 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:01:12,643 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:01:12,644 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:01:12,644 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:01:12,644 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:01:12,644 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:01:12,644 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:01:12,645 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:01:12,645 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:01:12,645 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:01:12,645 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:01:12,646 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:01:12,646 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:01:12,646 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:01:12,646 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:01:12,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:01:12,647 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:01:12,647 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:01:12,647 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:01:12,647 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:01:12,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:01:12,648 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:01:12,648 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:01:12,648 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:01:12,648 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:01:12,664 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_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a1fff1f2750aedbe7119b44ad3cdc8a2dbfa05ad8147a422ae9aeb0054d6e253 [2021-10-28 23:01:12,926 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:01:12,948 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:01:12,953 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:01:12,954 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:01:12,955 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:01:12,956 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-2.c [2021-10-28 23:01:13,026 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/bin/uautomizer-GMMbpWq8iD/data/de4da8a7d/fe0ea105d0d84a81b23288b0aacabea9/FLAG3ef1d7e3f [2021-10-28 23:01:13,736 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:01:13,737 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-2.c [2021-10-28 23:01:13,767 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/bin/uautomizer-GMMbpWq8iD/data/de4da8a7d/fe0ea105d0d84a81b23288b0aacabea9/FLAG3ef1d7e3f [2021-10-28 23:01:13,907 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/bin/uautomizer-GMMbpWq8iD/data/de4da8a7d/fe0ea105d0d84a81b23288b0aacabea9 [2021-10-28 23:01:13,909 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:01:13,910 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:01:13,912 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:01:13,912 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:01:13,916 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:01:13,916 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:01:13" (1/1) ... [2021-10-28 23:01:13,918 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@746ac5e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:13, skipping insertion in model container [2021-10-28 23:01:13,918 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:01:13" (1/1) ... [2021-10-28 23:01:13,925 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:01:13,999 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:01:14,428 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_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-2.c[72913,72926] [2021-10-28 23:01:14,438 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:01:14,452 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:01:14,634 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_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-2.c[72913,72926] [2021-10-28 23:01:14,644 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:01:14,665 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:01:14,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:14 WrapperNode [2021-10-28 23:01:14,666 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:01:14,668 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:01:14,668 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:01:14,668 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:01:14,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:14" (1/1) ... [2021-10-28 23:01:14,717 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:14" (1/1) ... [2021-10-28 23:01:14,782 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:01:14,791 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:01:14,792 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:01:14,792 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:01:14,801 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:14" (1/1) ... [2021-10-28 23:01:14,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:14" (1/1) ... [2021-10-28 23:01:14,827 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:14" (1/1) ... [2021-10-28 23:01:14,827 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:14" (1/1) ... [2021-10-28 23:01:14,912 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:14" (1/1) ... [2021-10-28 23:01:14,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:14" (1/1) ... [2021-10-28 23:01:14,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:14" (1/1) ... [2021-10-28 23:01:14,929 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:01:14,943 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:01:14,944 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:01:14,944 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:01:14,945 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:14" (1/1) ... [2021-10-28 23:01:14,953 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:01:14,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:01:14,993 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:01:15,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:01:15,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 23:01:15,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:01:15,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 23:01:15,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 23:01:15,049 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 23:01:15,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:01:15,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 23:01:15,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:01:15,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:01:15,282 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-28 23:01:18,290 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-10-28 23:01:18,291 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-10-28 23:01:18,300 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:01:18,301 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-28 23:01:18,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:01:18 BoogieIcfgContainer [2021-10-28 23:01:18,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:01:18,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:01:18,306 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:01:18,309 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:01:18,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:01:13" (1/3) ... [2021-10-28 23:01:18,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25187f21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:01:18, skipping insertion in model container [2021-10-28 23:01:18,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:01:14" (2/3) ... [2021-10-28 23:01:18,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25187f21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:01:18, skipping insertion in model container [2021-10-28 23:01:18,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:01:18" (3/3) ... [2021-10-28 23:01:18,313 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.01.i.cil-2.c [2021-10-28 23:01:18,319 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:01:18,320 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 23:01:18,376 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:01:18,384 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 23:01:18,384 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 23:01:18,409 INFO L276 IsEmpty]: Start isEmpty. Operand has 147 states, 145 states have (on average 1.696551724137931) internal successors, (246), 146 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 23:01:18,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-28 23:01:18,433 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:18,434 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 23:01:18,435 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:01:18,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:18,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1430116946, now seen corresponding path program 1 times [2021-10-28 23:01:18,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:01:18,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277467950] [2021-10-28 23:01:18,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:18,464 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:01:18,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:18,938 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 23:01:18,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:01:18,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277467950] [2021-10-28 23:01:18,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277467950] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:01:18,940 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:01:18,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:01:18,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667085764] [2021-10-28 23:01:18,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:01:18,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:01:18,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:01:18,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:01:18,969 INFO L87 Difference]: Start difference. First operand has 147 states, 145 states have (on average 1.696551724137931) internal successors, (246), 146 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) 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 23:01:21,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:21,618 INFO L93 Difference]: Finished difference Result 319 states and 533 transitions. [2021-10-28 23:01:21,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:01:21,620 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 23:01:21,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:21,634 INFO L225 Difference]: With dead ends: 319 [2021-10-28 23:01:21,634 INFO L226 Difference]: Without dead ends: 162 [2021-10-28 23:01:21,638 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 23:01:21,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-10-28 23:01:21,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 145. [2021-10-28 23:01:21,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.5416666666666667) internal successors, (222), 144 states have internal predecessors, (222), 0 states have call successors, (0), 0 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 23:01:21,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 222 transitions. [2021-10-28 23:01:21,691 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 222 transitions. Word has length 47 [2021-10-28 23:01:21,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:21,691 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 222 transitions. [2021-10-28 23:01:21,692 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 23:01:21,692 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 222 transitions. [2021-10-28 23:01:21,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-28 23:01:21,696 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:21,696 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 23:01:21,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:01:21,697 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:01:21,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:21,698 INFO L85 PathProgramCache]: Analyzing trace with hash -458217405, now seen corresponding path program 1 times [2021-10-28 23:01:21,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:01:21,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350296522] [2021-10-28 23:01:21,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:21,699 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:01:21,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:21,887 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 23:01:21,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:01:21,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350296522] [2021-10-28 23:01:21,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350296522] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:01:21,889 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:01:21,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:01:21,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595468636] [2021-10-28 23:01:21,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:01:21,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:01:21,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:01:21,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:01:21,897 INFO L87 Difference]: Start difference. First operand 145 states and 222 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 23:01:24,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:24,452 INFO L93 Difference]: Finished difference Result 286 states and 432 transitions. [2021-10-28 23:01:24,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:01:24,455 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 23:01:24,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:24,456 INFO L225 Difference]: With dead ends: 286 [2021-10-28 23:01:24,457 INFO L226 Difference]: Without dead ends: 162 [2021-10-28 23:01:24,458 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 23:01:24,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-10-28 23:01:24,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 145. [2021-10-28 23:01:24,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.5347222222222223) internal successors, (221), 144 states have internal predecessors, (221), 0 states have call successors, (0), 0 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 23:01:24,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 221 transitions. [2021-10-28 23:01:24,479 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 221 transitions. Word has length 60 [2021-10-28 23:01:24,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:24,480 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 221 transitions. [2021-10-28 23:01:24,481 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 23:01:24,482 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 221 transitions. [2021-10-28 23:01:24,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-10-28 23:01:24,487 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:24,487 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 23:01:24,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:01:24,488 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:01:24,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:24,490 INFO L85 PathProgramCache]: Analyzing trace with hash -374937149, now seen corresponding path program 1 times [2021-10-28 23:01:24,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:01:24,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736366851] [2021-10-28 23:01:24,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:24,494 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:01:24,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:24,732 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 23:01:24,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:01:24,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736366851] [2021-10-28 23:01:24,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736366851] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:01:24,740 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:01:24,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:01:24,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269413974] [2021-10-28 23:01:24,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:01:24,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:01:24,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:01:24,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:01:24,745 INFO L87 Difference]: Start difference. First operand 145 states and 221 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 23:01:27,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:27,352 INFO L93 Difference]: Finished difference Result 285 states and 430 transitions. [2021-10-28 23:01:27,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:01:27,353 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 23:01:27,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:27,356 INFO L225 Difference]: With dead ends: 285 [2021-10-28 23:01:27,356 INFO L226 Difference]: Without dead ends: 161 [2021-10-28 23:01:27,357 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 23:01:27,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-10-28 23:01:27,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 145. [2021-10-28 23:01:27,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.5277777777777777) internal successors, (220), 144 states have internal predecessors, (220), 0 states have call successors, (0), 0 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 23:01:27,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 220 transitions. [2021-10-28 23:01:27,371 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 220 transitions. Word has length 61 [2021-10-28 23:01:27,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:27,372 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 220 transitions. [2021-10-28 23:01:27,372 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 23:01:27,372 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 220 transitions. [2021-10-28 23:01:27,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-10-28 23:01:27,375 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:27,376 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 23:01:27,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 23:01:27,376 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:01:27,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:27,377 INFO L85 PathProgramCache]: Analyzing trace with hash 470501247, now seen corresponding path program 1 times [2021-10-28 23:01:27,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:01:27,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967802309] [2021-10-28 23:01:27,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:27,379 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:01:27,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:27,531 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 23:01:27,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:01:27,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967802309] [2021-10-28 23:01:27,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967802309] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:01:27,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:01:27,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:01:27,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456452358] [2021-10-28 23:01:27,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:01:27,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:01:27,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:01:27,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:01:27,536 INFO L87 Difference]: Start difference. First operand 145 states and 220 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 23:01:29,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:29,996 INFO L93 Difference]: Finished difference Result 283 states and 427 transitions. [2021-10-28 23:01:29,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:01:29,997 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 23:01:29,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:29,999 INFO L225 Difference]: With dead ends: 283 [2021-10-28 23:01:29,999 INFO L226 Difference]: Without dead ends: 159 [2021-10-28 23:01:30,000 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 23:01:30,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-10-28 23:01:30,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 145. [2021-10-28 23:01:30,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.5208333333333333) internal successors, (219), 144 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 23:01:30,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 219 transitions. [2021-10-28 23:01:30,012 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 219 transitions. Word has length 61 [2021-10-28 23:01:30,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:30,013 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 219 transitions. [2021-10-28 23:01:30,013 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 23:01:30,013 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 219 transitions. [2021-10-28 23:01:30,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-28 23:01:30,016 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:30,017 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, 1] [2021-10-28 23:01:30,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 23:01:30,017 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:01:30,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:30,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1212742610, now seen corresponding path program 1 times [2021-10-28 23:01:30,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:01:30,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218891049] [2021-10-28 23:01:30,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:30,019 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:01:30,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:30,116 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 23:01:30,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:01:30,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218891049] [2021-10-28 23:01:30,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218891049] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:01:30,117 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:01:30,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:01:30,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076699316] [2021-10-28 23:01:30,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:01:30,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:01:30,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:01:30,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:01:30,120 INFO L87 Difference]: Start difference. First operand 145 states and 219 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 23:01:32,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:32,552 INFO L93 Difference]: Finished difference Result 282 states and 425 transitions. [2021-10-28 23:01:32,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:01:32,555 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 23:01:32,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:32,556 INFO L225 Difference]: With dead ends: 282 [2021-10-28 23:01:32,556 INFO L226 Difference]: Without dead ends: 158 [2021-10-28 23:01:32,557 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 23:01:32,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-10-28 23:01:32,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 145. [2021-10-28 23:01:32,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.5138888888888888) internal successors, (218), 144 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 23:01:32,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 218 transitions. [2021-10-28 23:01:32,566 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 218 transitions. Word has length 62 [2021-10-28 23:01:32,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:32,567 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 218 transitions. [2021-10-28 23:01:32,567 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 23:01:32,568 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 218 transitions. [2021-10-28 23:01:32,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-28 23:01:32,570 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:32,571 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, 1] [2021-10-28 23:01:32,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 23:01:32,571 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:01:32,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:32,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1421272766, now seen corresponding path program 1 times [2021-10-28 23:01:32,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:01:32,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595054393] [2021-10-28 23:01:32,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:32,573 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:01:32,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:32,699 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 23:01:32,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:01:32,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595054393] [2021-10-28 23:01:32,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595054393] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:01:32,702 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:01:32,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:01:32,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728635363] [2021-10-28 23:01:32,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:01:32,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:01:32,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:01:32,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:01:32,709 INFO L87 Difference]: Start difference. First operand 145 states and 218 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 23:01:35,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:35,138 INFO L93 Difference]: Finished difference Result 282 states and 424 transitions. [2021-10-28 23:01:35,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:01:35,139 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 23:01:35,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:35,141 INFO L225 Difference]: With dead ends: 282 [2021-10-28 23:01:35,141 INFO L226 Difference]: Without dead ends: 158 [2021-10-28 23:01:35,142 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 23:01:35,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-10-28 23:01:35,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 145. [2021-10-28 23:01:35,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.5069444444444444) internal successors, (217), 144 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 23:01:35,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 217 transitions. [2021-10-28 23:01:35,160 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 217 transitions. Word has length 62 [2021-10-28 23:01:35,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:35,160 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 217 transitions. [2021-10-28 23:01:35,161 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 23:01:35,161 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 217 transitions. [2021-10-28 23:01:35,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-10-28 23:01:35,163 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:35,163 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, 1] [2021-10-28 23:01:35,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 23:01:35,164 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:01:35,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:35,164 INFO L85 PathProgramCache]: Analyzing trace with hash 409565242, now seen corresponding path program 1 times [2021-10-28 23:01:35,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:01:35,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723111199] [2021-10-28 23:01:35,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:35,165 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:01:35,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:35,298 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 23:01:35,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:01:35,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723111199] [2021-10-28 23:01:35,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723111199] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:01:35,299 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:01:35,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:01:35,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135655208] [2021-10-28 23:01:35,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:01:35,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:01:35,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:01:35,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:01:35,302 INFO L87 Difference]: Start difference. First operand 145 states and 217 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 23:01:37,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:37,676 INFO L93 Difference]: Finished difference Result 282 states and 423 transitions. [2021-10-28 23:01:37,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:01:37,677 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 23:01:37,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:37,678 INFO L225 Difference]: With dead ends: 282 [2021-10-28 23:01:37,679 INFO L226 Difference]: Without dead ends: 158 [2021-10-28 23:01:37,679 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 23:01:37,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-10-28 23:01:37,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 145. [2021-10-28 23:01:37,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.5) internal successors, (216), 144 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 23:01:37,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 216 transitions. [2021-10-28 23:01:37,687 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 216 transitions. Word has length 63 [2021-10-28 23:01:37,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:37,687 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 216 transitions. [2021-10-28 23:01:37,687 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 23:01:37,688 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 216 transitions. [2021-10-28 23:01:37,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-10-28 23:01:37,689 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:37,689 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 23:01:37,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 23:01:37,689 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:01:37,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:37,690 INFO L85 PathProgramCache]: Analyzing trace with hash -682574659, now seen corresponding path program 1 times [2021-10-28 23:01:37,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:01:37,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041539260] [2021-10-28 23:01:37,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:37,691 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:01:37,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:37,782 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 23:01:37,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:01:37,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041539260] [2021-10-28 23:01:37,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041539260] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:01:37,783 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:01:37,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:01:37,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831286064] [2021-10-28 23:01:37,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:01:37,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:01:37,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:01:37,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:01:37,785 INFO L87 Difference]: Start difference. First operand 145 states and 216 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 23:01:40,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:40,248 INFO L93 Difference]: Finished difference Result 312 states and 471 transitions. [2021-10-28 23:01:40,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:01:40,249 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 23:01:40,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:40,251 INFO L225 Difference]: With dead ends: 312 [2021-10-28 23:01:40,251 INFO L226 Difference]: Without dead ends: 188 [2021-10-28 23:01:40,252 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 23:01:40,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-10-28 23:01:40,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 167. [2021-10-28 23:01:40,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.5301204819277108) internal successors, (254), 166 states have internal predecessors, (254), 0 states have call successors, (0), 0 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 23:01:40,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 254 transitions. [2021-10-28 23:01:40,260 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 254 transitions. Word has length 64 [2021-10-28 23:01:40,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:40,261 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 254 transitions. [2021-10-28 23:01:40,261 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 23:01:40,261 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 254 transitions. [2021-10-28 23:01:40,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-10-28 23:01:40,263 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:40,263 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, 1] [2021-10-28 23:01:40,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 23:01:40,264 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:01:40,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:40,264 INFO L85 PathProgramCache]: Analyzing trace with hash -2091297575, now seen corresponding path program 1 times [2021-10-28 23:01:40,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:01:40,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732992264] [2021-10-28 23:01:40,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:40,265 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:01:40,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:40,345 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 23:01:40,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:01:40,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732992264] [2021-10-28 23:01:40,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732992264] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:01:40,346 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:01:40,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:01:40,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690142323] [2021-10-28 23:01:40,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:01:40,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:01:40,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:01:40,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:01:40,348 INFO L87 Difference]: Start difference. First operand 167 states and 254 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 23:01:42,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:42,726 INFO L93 Difference]: Finished difference Result 326 states and 498 transitions. [2021-10-28 23:01:42,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:01:42,727 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 23:01:42,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:42,729 INFO L225 Difference]: With dead ends: 326 [2021-10-28 23:01:42,729 INFO L226 Difference]: Without dead ends: 180 [2021-10-28 23:01:42,729 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 23:01:42,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-10-28 23:01:42,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 167. [2021-10-28 23:01:42,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.5240963855421688) internal successors, (253), 166 states have internal predecessors, (253), 0 states have call successors, (0), 0 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 23:01:42,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 253 transitions. [2021-10-28 23:01:42,738 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 253 transitions. Word has length 64 [2021-10-28 23:01:42,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:42,738 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 253 transitions. [2021-10-28 23:01:42,739 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 23:01:42,739 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 253 transitions. [2021-10-28 23:01:42,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-28 23:01:42,740 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:42,740 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, 1] [2021-10-28 23:01:42,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 23:01:42,741 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:01:42,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:42,741 INFO L85 PathProgramCache]: Analyzing trace with hash 783633077, now seen corresponding path program 1 times [2021-10-28 23:01:42,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:01:42,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76683497] [2021-10-28 23:01:42,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:42,742 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:01:42,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:42,831 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 23:01:42,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:01:42,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76683497] [2021-10-28 23:01:42,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76683497] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:01:42,832 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:01:42,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:01:42,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069889386] [2021-10-28 23:01:42,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:01:42,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:01:42,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:01:42,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:01:42,834 INFO L87 Difference]: Start difference. First operand 167 states and 253 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:45,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:45,215 INFO L93 Difference]: Finished difference Result 316 states and 484 transitions. [2021-10-28 23:01:45,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:01:45,219 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-10-28 23:01:45,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:45,223 INFO L225 Difference]: With dead ends: 316 [2021-10-28 23:01:45,223 INFO L226 Difference]: Without dead ends: 170 [2021-10-28 23:01:45,224 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 23:01:45,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-10-28 23:01:45,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 167. [2021-10-28 23:01:45,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.5180722891566265) internal successors, (252), 166 states have internal predecessors, (252), 0 states have call successors, (0), 0 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 23:01:45,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 252 transitions. [2021-10-28 23:01:45,234 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 252 transitions. Word has length 65 [2021-10-28 23:01:45,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:45,234 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 252 transitions. [2021-10-28 23:01:45,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:01:45,235 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 252 transitions. [2021-10-28 23:01:45,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-28 23:01:45,236 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:45,236 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 23:01:45,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 23:01:45,237 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:01:45,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:45,238 INFO L85 PathProgramCache]: Analyzing trace with hash 59755448, now seen corresponding path program 1 times [2021-10-28 23:01:45,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:01:45,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394244038] [2021-10-28 23:01:45,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:45,241 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:01:45,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:45,363 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 23:01:45,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:01:45,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394244038] [2021-10-28 23:01:45,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394244038] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:01:45,364 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:01:45,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:01:45,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309274090] [2021-10-28 23:01:45,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:01:45,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:01:45,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:01:45,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:01:45,366 INFO L87 Difference]: Start difference. First operand 167 states and 252 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 23:01:47,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:47,677 INFO L93 Difference]: Finished difference Result 334 states and 506 transitions. [2021-10-28 23:01:47,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:01:47,678 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 23:01:47,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:47,679 INFO L225 Difference]: With dead ends: 334 [2021-10-28 23:01:47,680 INFO L226 Difference]: Without dead ends: 188 [2021-10-28 23:01:47,680 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 23:01:47,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-10-28 23:01:47,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 167. [2021-10-28 23:01:47,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.5120481927710843) internal successors, (251), 166 states have internal predecessors, (251), 0 states have call successors, (0), 0 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 23:01:47,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 251 transitions. [2021-10-28 23:01:47,688 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 251 transitions. Word has length 77 [2021-10-28 23:01:47,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:47,688 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 251 transitions. [2021-10-28 23:01:47,689 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 23:01:47,689 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 251 transitions. [2021-10-28 23:01:47,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-10-28 23:01:47,690 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:47,690 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 23:01:47,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-28 23:01:47,691 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:01:47,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:47,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1497647890, now seen corresponding path program 1 times [2021-10-28 23:01:47,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:01:47,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831529502] [2021-10-28 23:01:47,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:47,692 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:01:47,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:47,762 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 23:01:47,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:01:47,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831529502] [2021-10-28 23:01:47,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831529502] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:01:47,763 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:01:47,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:01:47,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534622404] [2021-10-28 23:01:47,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:01:47,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:01:47,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:01:47,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:01:47,765 INFO L87 Difference]: Start difference. First operand 167 states and 251 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 23:01:50,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:50,091 INFO L93 Difference]: Finished difference Result 333 states and 503 transitions. [2021-10-28 23:01:50,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:01:50,092 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 23:01:50,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:50,094 INFO L225 Difference]: With dead ends: 333 [2021-10-28 23:01:50,094 INFO L226 Difference]: Without dead ends: 187 [2021-10-28 23:01:50,094 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 23:01:50,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-10-28 23:01:50,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 167. [2021-10-28 23:01:50,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.5060240963855422) internal successors, (250), 166 states have internal predecessors, (250), 0 states have call successors, (0), 0 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 23:01:50,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 250 transitions. [2021-10-28 23:01:50,098 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 250 transitions. Word has length 78 [2021-10-28 23:01:50,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:50,099 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 250 transitions. [2021-10-28 23:01:50,099 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 23:01:50,099 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 250 transitions. [2021-10-28 23:01:50,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-10-28 23:01:50,099 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:50,100 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 23:01:50,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-28 23:01:50,100 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:01:50,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:50,100 INFO L85 PathProgramCache]: Analyzing trace with hash -652209494, now seen corresponding path program 1 times [2021-10-28 23:01:50,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:01:50,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800404355] [2021-10-28 23:01:50,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:50,101 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:01:50,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:50,170 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 23:01:50,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:01:50,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800404355] [2021-10-28 23:01:50,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800404355] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:01:50,171 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:01:50,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:01:50,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171021336] [2021-10-28 23:01:50,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:01:50,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:01:50,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:01:50,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:01:50,173 INFO L87 Difference]: Start difference. First operand 167 states and 250 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 23:01:52,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:52,523 INFO L93 Difference]: Finished difference Result 331 states and 499 transitions. [2021-10-28 23:01:52,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:01:52,524 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 23:01:52,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:52,526 INFO L225 Difference]: With dead ends: 331 [2021-10-28 23:01:52,526 INFO L226 Difference]: Without dead ends: 185 [2021-10-28 23:01:52,526 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 23:01:52,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-10-28 23:01:52,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 167. [2021-10-28 23:01:52,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.5) internal successors, (249), 166 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 23:01:52,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 249 transitions. [2021-10-28 23:01:52,534 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 249 transitions. Word has length 78 [2021-10-28 23:01:52,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:52,534 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 249 transitions. [2021-10-28 23:01:52,534 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 23:01:52,535 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 249 transitions. [2021-10-28 23:01:52,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-10-28 23:01:52,536 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:52,537 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, 1] [2021-10-28 23:01:52,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-28 23:01:52,537 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:01:52,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:52,538 INFO L85 PathProgramCache]: Analyzing trace with hash 768448007, now seen corresponding path program 1 times [2021-10-28 23:01:52,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:01:52,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576856715] [2021-10-28 23:01:52,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:52,539 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:01:52,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:52,642 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 23:01:52,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:01:52,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576856715] [2021-10-28 23:01:52,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576856715] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:01:52,643 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:01:52,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:01:52,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909970258] [2021-10-28 23:01:52,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:01:52,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:01:52,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:01:52,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:01:52,646 INFO L87 Difference]: Start difference. First operand 167 states and 249 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 23:01:54,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:54,974 INFO L93 Difference]: Finished difference Result 330 states and 496 transitions. [2021-10-28 23:01:54,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:01:54,975 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 23:01:54,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:54,976 INFO L225 Difference]: With dead ends: 330 [2021-10-28 23:01:54,977 INFO L226 Difference]: Without dead ends: 184 [2021-10-28 23:01:54,977 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 23:01:54,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-10-28 23:01:54,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 167. [2021-10-28 23:01:54,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.4939759036144578) internal successors, (248), 166 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 23:01:54,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 248 transitions. [2021-10-28 23:01:54,985 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 248 transitions. Word has length 79 [2021-10-28 23:01:54,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:54,985 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 248 transitions. [2021-10-28 23:01:54,985 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 23:01:54,985 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 248 transitions. [2021-10-28 23:01:54,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-10-28 23:01:54,987 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:54,987 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, 1] [2021-10-28 23:01:54,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-28 23:01:54,987 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:01:54,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:54,988 INFO L85 PathProgramCache]: Analyzing trace with hash 976978163, now seen corresponding path program 1 times [2021-10-28 23:01:54,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:01:54,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195300232] [2021-10-28 23:01:54,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:54,989 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:01:55,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:55,068 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 23:01:55,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:01:55,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195300232] [2021-10-28 23:01:55,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195300232] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:01:55,069 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:01:55,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:01:55,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741861333] [2021-10-28 23:01:55,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:01:55,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:01:55,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:01:55,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:01:55,071 INFO L87 Difference]: Start difference. First operand 167 states and 248 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 23:01:57,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:57,381 INFO L93 Difference]: Finished difference Result 330 states and 494 transitions. [2021-10-28 23:01:57,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:01:57,382 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 23:01:57,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:57,383 INFO L225 Difference]: With dead ends: 330 [2021-10-28 23:01:57,383 INFO L226 Difference]: Without dead ends: 184 [2021-10-28 23:01:57,384 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 23:01:57,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-10-28 23:01:57,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 167. [2021-10-28 23:01:57,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.4879518072289157) internal successors, (247), 166 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 23:01:57,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 247 transitions. [2021-10-28 23:01:57,390 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 247 transitions. Word has length 79 [2021-10-28 23:01:57,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:57,391 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 247 transitions. [2021-10-28 23:01:57,391 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 23:01:57,391 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 247 transitions. [2021-10-28 23:01:57,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-28 23:01:57,392 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:57,392 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, 1] [2021-10-28 23:01:57,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-28 23:01:57,393 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:01:57,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:57,393 INFO L85 PathProgramCache]: Analyzing trace with hash -478665563, now seen corresponding path program 1 times [2021-10-28 23:01:57,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:01:57,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917037815] [2021-10-28 23:01:57,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:57,394 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:01:57,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:57,470 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 23:01:57,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:01:57,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917037815] [2021-10-28 23:01:57,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917037815] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:01:57,471 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:01:57,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:01:57,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226054153] [2021-10-28 23:01:57,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:01:57,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:01:57,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:01:57,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:01:57,473 INFO L87 Difference]: Start difference. First operand 167 states and 247 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 23:01:59,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:01:59,777 INFO L93 Difference]: Finished difference Result 330 states and 492 transitions. [2021-10-28 23:01:59,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:01:59,778 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 23:01:59,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:01:59,780 INFO L225 Difference]: With dead ends: 330 [2021-10-28 23:01:59,780 INFO L226 Difference]: Without dead ends: 184 [2021-10-28 23:01:59,781 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 23:01:59,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-10-28 23:01:59,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 167. [2021-10-28 23:01:59,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.4819277108433735) internal successors, (246), 166 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 23:01:59,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 246 transitions. [2021-10-28 23:01:59,788 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 246 transitions. Word has length 80 [2021-10-28 23:01:59,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:01:59,788 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 246 transitions. [2021-10-28 23:01:59,789 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 23:01:59,789 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 246 transitions. [2021-10-28 23:01:59,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-10-28 23:01:59,790 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:01:59,790 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, 1] [2021-10-28 23:01:59,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-28 23:01:59,791 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:01:59,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:01:59,792 INFO L85 PathProgramCache]: Analyzing trace with hash 438318542, now seen corresponding path program 1 times [2021-10-28 23:01:59,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:01:59,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933014285] [2021-10-28 23:01:59,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:01:59,792 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:01:59,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:01:59,852 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 23:01:59,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:01:59,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933014285] [2021-10-28 23:01:59,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933014285] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:01:59,853 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:01:59,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:01:59,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016536045] [2021-10-28 23:01:59,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:01:59,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:01:59,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:01:59,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:01:59,855 INFO L87 Difference]: Start difference. First operand 167 states and 246 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 23:02:02,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:02:02,155 INFO L93 Difference]: Finished difference Result 330 states and 490 transitions. [2021-10-28 23:02:02,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:02:02,156 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 23:02:02,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:02:02,157 INFO L225 Difference]: With dead ends: 330 [2021-10-28 23:02:02,158 INFO L226 Difference]: Without dead ends: 184 [2021-10-28 23:02:02,158 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 23:02:02,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-10-28 23:02:02,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 167. [2021-10-28 23:02:02,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.4759036144578312) internal successors, (245), 166 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 23:02:02,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 245 transitions. [2021-10-28 23:02:02,166 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 245 transitions. Word has length 81 [2021-10-28 23:02:02,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:02:02,166 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 245 transitions. [2021-10-28 23:02:02,166 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 23:02:02,167 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 245 transitions. [2021-10-28 23:02:02,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-10-28 23:02:02,168 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:02:02,168 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, 1] [2021-10-28 23:02:02,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-28 23:02:02,169 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:02:02,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:02,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1892321376, now seen corresponding path program 1 times [2021-10-28 23:02:02,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:02,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653240744] [2021-10-28 23:02:02,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:02,170 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:02,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:02,237 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 23:02:02,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:02,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653240744] [2021-10-28 23:02:02,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653240744] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:02:02,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:02:02,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:02:02,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009842112] [2021-10-28 23:02:02,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:02:02,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:02,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:02:02,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:02:02,240 INFO L87 Difference]: Start difference. First operand 167 states and 245 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:02:04,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:02:04,576 INFO L93 Difference]: Finished difference Result 320 states and 475 transitions. [2021-10-28 23:02:04,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:02:04,577 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-10-28 23:02:04,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:02:04,579 INFO L225 Difference]: With dead ends: 320 [2021-10-28 23:02:04,579 INFO L226 Difference]: Without dead ends: 174 [2021-10-28 23:02:04,580 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 23:02:04,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-10-28 23:02:04,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 167. [2021-10-28 23:02:04,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.4698795180722892) internal successors, (244), 166 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 23:02:04,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 244 transitions. [2021-10-28 23:02:04,589 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 244 transitions. Word has length 82 [2021-10-28 23:02:04,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:02:04,589 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 244 transitions. [2021-10-28 23:02:04,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:02:04,590 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 244 transitions. [2021-10-28 23:02:04,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-10-28 23:02:04,591 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:02:04,591 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 23:02:04,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-28 23:02:04,592 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:02:04,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:04,592 INFO L85 PathProgramCache]: Analyzing trace with hash 485035231, now seen corresponding path program 1 times [2021-10-28 23:02:04,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:04,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162768339] [2021-10-28 23:02:04,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:04,593 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:04,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:04,676 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 23:02:04,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:04,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162768339] [2021-10-28 23:02:04,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162768339] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:02:04,677 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:02:04,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:02:04,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898340652] [2021-10-28 23:02:04,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:02:04,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:04,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:02:04,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:02:04,681 INFO L87 Difference]: Start difference. First operand 167 states and 244 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 23:02:07,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:02:07,049 INFO L93 Difference]: Finished difference Result 363 states and 539 transitions. [2021-10-28 23:02:07,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:02:07,049 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 23:02:07,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:02:07,051 INFO L225 Difference]: With dead ends: 363 [2021-10-28 23:02:07,051 INFO L226 Difference]: Without dead ends: 217 [2021-10-28 23:02:07,052 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 23:02:07,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-10-28 23:02:07,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 192. [2021-10-28 23:02:07,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 1.5026178010471205) internal successors, (287), 191 states have internal predecessors, (287), 0 states have call successors, (0), 0 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 23:02:07,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 287 transitions. [2021-10-28 23:02:07,061 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 287 transitions. Word has length 86 [2021-10-28 23:02:07,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:02:07,061 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 287 transitions. [2021-10-28 23:02:07,061 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 23:02:07,062 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 287 transitions. [2021-10-28 23:02:07,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-10-28 23:02:07,063 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:02:07,063 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 23:02:07,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-28 23:02:07,064 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:02:07,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:07,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1382428509, now seen corresponding path program 1 times [2021-10-28 23:02:07,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:07,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614250046] [2021-10-28 23:02:07,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:07,065 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:07,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:07,154 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 23:02:07,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:07,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614250046] [2021-10-28 23:02:07,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614250046] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:02:07,155 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:02:07,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:02:07,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709457454] [2021-10-28 23:02:07,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:02:07,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:07,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:02:07,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:02:07,157 INFO L87 Difference]: Start difference. First operand 192 states and 287 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 23:02:09,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:02:09,728 INFO L93 Difference]: Finished difference Result 459 states and 698 transitions. [2021-10-28 23:02:09,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:02:09,730 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 23:02:09,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:02:09,732 INFO L225 Difference]: With dead ends: 459 [2021-10-28 23:02:09,732 INFO L226 Difference]: Without dead ends: 288 [2021-10-28 23:02:09,733 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 23:02:09,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-10-28 23:02:09,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 234. [2021-10-28 23:02:09,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 1.5622317596566524) internal successors, (364), 233 states have internal predecessors, (364), 0 states have call successors, (0), 0 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 23:02:09,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 364 transitions. [2021-10-28 23:02:09,744 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 364 transitions. Word has length 86 [2021-10-28 23:02:09,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:02:09,744 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 364 transitions. [2021-10-28 23:02:09,745 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 23:02:09,745 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 364 transitions. [2021-10-28 23:02:09,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-10-28 23:02:09,746 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:02:09,746 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 23:02:09,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-10-28 23:02:09,747 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:02:09,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:09,748 INFO L85 PathProgramCache]: Analyzing trace with hash -479313194, now seen corresponding path program 1 times [2021-10-28 23:02:09,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:09,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134142629] [2021-10-28 23:02:09,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:09,749 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:09,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:09,864 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 23:02:09,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:09,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134142629] [2021-10-28 23:02:09,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134142629] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:02:09,865 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:02:09,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:02:09,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459044047] [2021-10-28 23:02:09,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:02:09,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:09,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:02:09,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:02:09,870 INFO L87 Difference]: Start difference. First operand 234 states and 364 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 23:02:12,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:02:12,224 INFO L93 Difference]: Finished difference Result 472 states and 735 transitions. [2021-10-28 23:02:12,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:02:12,224 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 23:02:12,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:02:12,226 INFO L225 Difference]: With dead ends: 472 [2021-10-28 23:02:12,226 INFO L226 Difference]: Without dead ends: 259 [2021-10-28 23:02:12,227 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 23:02:12,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-10-28 23:02:12,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 234. [2021-10-28 23:02:12,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 1.55793991416309) internal successors, (363), 233 states have internal predecessors, (363), 0 states have call successors, (0), 0 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 23:02:12,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 363 transitions. [2021-10-28 23:02:12,237 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 363 transitions. Word has length 99 [2021-10-28 23:02:12,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:02:12,238 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 363 transitions. [2021-10-28 23:02:12,238 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 23:02:12,238 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 363 transitions. [2021-10-28 23:02:12,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-10-28 23:02:12,240 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:02:12,240 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 23:02:12,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-10-28 23:02:12,240 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:02:12,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:12,241 INFO L85 PathProgramCache]: Analyzing trace with hash -519987944, now seen corresponding path program 1 times [2021-10-28 23:02:12,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:12,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283281214] [2021-10-28 23:02:12,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:12,242 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:12,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:12,324 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 23:02:12,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:12,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283281214] [2021-10-28 23:02:12,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283281214] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:02:12,326 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:02:12,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:02:12,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638235313] [2021-10-28 23:02:12,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:02:12,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:12,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:02:12,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:02:12,328 INFO L87 Difference]: Start difference. First operand 234 states and 363 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 23:02:14,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:02:14,821 INFO L93 Difference]: Finished difference Result 501 states and 772 transitions. [2021-10-28 23:02:14,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:02:14,822 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 23:02:14,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:02:14,824 INFO L225 Difference]: With dead ends: 501 [2021-10-28 23:02:14,824 INFO L226 Difference]: Without dead ends: 288 [2021-10-28 23:02:14,825 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 23:02:14,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-10-28 23:02:14,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 234. [2021-10-28 23:02:14,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 1.553648068669528) internal successors, (362), 233 states have internal predecessors, (362), 0 states have call successors, (0), 0 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 23:02:14,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 362 transitions. [2021-10-28 23:02:14,835 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 362 transitions. Word has length 99 [2021-10-28 23:02:14,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:02:14,836 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 362 transitions. [2021-10-28 23:02:14,836 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 23:02:14,836 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 362 transitions. [2021-10-28 23:02:14,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-28 23:02:14,837 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:02:14,838 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 23:02:14,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-10-28 23:02:14,838 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:02:14,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:14,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1028906608, now seen corresponding path program 1 times [2021-10-28 23:02:14,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:14,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101916934] [2021-10-28 23:02:14,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:14,840 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:14,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:14,940 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 23:02:14,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:14,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101916934] [2021-10-28 23:02:14,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101916934] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:02:14,941 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:02:14,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:02:14,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093966476] [2021-10-28 23:02:14,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:02:14,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:14,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:02:14,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:02:14,944 INFO L87 Difference]: Start difference. First operand 234 states and 362 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 23:02:17,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:02:17,431 INFO L93 Difference]: Finished difference Result 471 states and 730 transitions. [2021-10-28 23:02:17,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:02:17,432 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 23:02:17,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:02:17,434 INFO L225 Difference]: With dead ends: 471 [2021-10-28 23:02:17,434 INFO L226 Difference]: Without dead ends: 258 [2021-10-28 23:02:17,435 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 23:02:17,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-10-28 23:02:17,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 234. [2021-10-28 23:02:17,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 1.5493562231759657) internal successors, (361), 233 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 23:02:17,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 361 transitions. [2021-10-28 23:02:17,444 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 361 transitions. Word has length 100 [2021-10-28 23:02:17,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:02:17,444 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 361 transitions. [2021-10-28 23:02:17,445 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 23:02:17,445 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 361 transitions. [2021-10-28 23:02:17,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-28 23:02:17,446 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:02:17,446 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 23:02:17,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-10-28 23:02:17,447 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:02:17,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:17,447 INFO L85 PathProgramCache]: Analyzing trace with hash -183468212, now seen corresponding path program 1 times [2021-10-28 23:02:17,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:17,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083556524] [2021-10-28 23:02:17,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:17,448 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:17,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:17,531 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 23:02:17,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:17,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083556524] [2021-10-28 23:02:17,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083556524] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:02:17,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:02:17,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:02:17,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326045129] [2021-10-28 23:02:17,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:02:17,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:17,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:02:17,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:02:17,534 INFO L87 Difference]: Start difference. First operand 234 states and 361 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 23:02:19,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:02:19,874 INFO L93 Difference]: Finished difference Result 469 states and 726 transitions. [2021-10-28 23:02:19,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:02:19,875 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 23:02:19,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:02:19,877 INFO L225 Difference]: With dead ends: 469 [2021-10-28 23:02:19,878 INFO L226 Difference]: Without dead ends: 256 [2021-10-28 23:02:19,878 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 23:02:19,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-10-28 23:02:19,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 234. [2021-10-28 23:02:19,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 1.5450643776824033) internal successors, (360), 233 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 23:02:19,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 360 transitions. [2021-10-28 23:02:19,888 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 360 transitions. Word has length 100 [2021-10-28 23:02:19,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:02:19,888 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 360 transitions. [2021-10-28 23:02:19,889 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 23:02:19,889 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 360 transitions. [2021-10-28 23:02:19,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-28 23:02:19,890 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:02:19,890 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 23:02:19,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-10-28 23:02:19,891 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:02:19,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:19,892 INFO L85 PathProgramCache]: Analyzing trace with hash 2005143438, now seen corresponding path program 1 times [2021-10-28 23:02:19,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:19,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163695269] [2021-10-28 23:02:19,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:19,893 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:19,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:19,991 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 23:02:19,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:19,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163695269] [2021-10-28 23:02:19,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163695269] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:02:19,992 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:02:19,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:02:19,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345552420] [2021-10-28 23:02:19,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:02:19,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:19,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:02:19,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:02:19,994 INFO L87 Difference]: Start difference. First operand 234 states and 360 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 23:02:22,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:02:22,449 INFO L93 Difference]: Finished difference Result 500 states and 765 transitions. [2021-10-28 23:02:22,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:02:22,450 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 23:02:22,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:02:22,452 INFO L225 Difference]: With dead ends: 500 [2021-10-28 23:02:22,452 INFO L226 Difference]: Without dead ends: 287 [2021-10-28 23:02:22,452 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 23:02:22,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-10-28 23:02:22,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 234. [2021-10-28 23:02:22,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 1.5407725321888412) internal successors, (359), 233 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 23:02:22,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 359 transitions. [2021-10-28 23:02:22,461 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 359 transitions. Word has length 100 [2021-10-28 23:02:22,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:02:22,461 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 359 transitions. [2021-10-28 23:02:22,462 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 23:02:22,462 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 359 transitions. [2021-10-28 23:02:22,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-28 23:02:22,463 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:02:22,463 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 23:02:22,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-10-28 23:02:22,464 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:02:22,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:22,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1444385462, now seen corresponding path program 1 times [2021-10-28 23:02:22,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:22,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535342748] [2021-10-28 23:02:22,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:22,465 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:22,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:22,536 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 23:02:22,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:22,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535342748] [2021-10-28 23:02:22,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535342748] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:02:22,537 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:02:22,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:02:22,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456643490] [2021-10-28 23:02:22,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:02:22,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:22,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:02:22,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:02:22,539 INFO L87 Difference]: Start difference. First operand 234 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 23:02:24,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:02:24,998 INFO L93 Difference]: Finished difference Result 498 states and 761 transitions. [2021-10-28 23:02:24,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:02:24,999 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 23:02:24,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:02:25,001 INFO L225 Difference]: With dead ends: 498 [2021-10-28 23:02:25,002 INFO L226 Difference]: Without dead ends: 285 [2021-10-28 23:02:25,002 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 23:02:25,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2021-10-28 23:02:25,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 234. [2021-10-28 23:02:25,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 1.536480686695279) internal successors, (358), 233 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 23:02:25,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 358 transitions. [2021-10-28 23:02:25,012 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 358 transitions. Word has length 100 [2021-10-28 23:02:25,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:02:25,012 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 358 transitions. [2021-10-28 23:02:25,013 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 23:02:25,013 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 358 transitions. [2021-10-28 23:02:25,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-10-28 23:02:25,014 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:02:25,015 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, 1] [2021-10-28 23:02:25,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-10-28 23:02:25,015 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:02:25,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:25,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1880441435, now seen corresponding path program 1 times [2021-10-28 23:02:25,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:25,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931407528] [2021-10-28 23:02:25,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:25,017 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:25,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:25,091 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 23:02:25,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:25,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931407528] [2021-10-28 23:02:25,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931407528] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:02:25,092 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:02:25,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:02:25,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154681437] [2021-10-28 23:02:25,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:02:25,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:25,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:02:25,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:02:25,095 INFO L87 Difference]: Start difference. First operand 234 states and 358 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 23:02:27,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:02:27,455 INFO L93 Difference]: Finished difference Result 468 states and 719 transitions. [2021-10-28 23:02:27,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:02:27,456 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 23:02:27,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:02:27,458 INFO L225 Difference]: With dead ends: 468 [2021-10-28 23:02:27,458 INFO L226 Difference]: Without dead ends: 255 [2021-10-28 23:02:27,459 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 23:02:27,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-10-28 23:02:27,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 234. [2021-10-28 23:02:27,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 1.5321888412017168) internal successors, (357), 233 states have internal predecessors, (357), 0 states have call successors, (0), 0 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 23:02:27,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 357 transitions. [2021-10-28 23:02:27,468 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 357 transitions. Word has length 101 [2021-10-28 23:02:27,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:02:27,468 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 357 transitions. [2021-10-28 23:02:27,469 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 23:02:27,469 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 357 transitions. [2021-10-28 23:02:27,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-10-28 23:02:27,470 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:02:27,470 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 23:02:27,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-10-28 23:02:27,471 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:02:27,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:27,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1671911279, now seen corresponding path program 1 times [2021-10-28 23:02:27,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:27,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894705647] [2021-10-28 23:02:27,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:27,473 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:27,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:27,618 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 23:02:27,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:27,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894705647] [2021-10-28 23:02:27,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894705647] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:02:27,620 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:02:27,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:02:27,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670012854] [2021-10-28 23:02:27,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:02:27,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:27,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:02:27,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:02:27,622 INFO L87 Difference]: Start difference. First operand 234 states and 357 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:02:32,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:02:32,110 INFO L93 Difference]: Finished difference Result 468 states and 719 transitions. [2021-10-28 23:02:32,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:02:32,111 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-10-28 23:02:32,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:02:32,113 INFO L225 Difference]: With dead ends: 468 [2021-10-28 23:02:32,114 INFO L226 Difference]: Without dead ends: 255 [2021-10-28 23:02:32,115 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 23:02:32,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-10-28 23:02:32,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 254. [2021-10-28 23:02:32,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 1.5138339920948616) internal successors, (383), 253 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 23:02:32,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 383 transitions. [2021-10-28 23:02:32,124 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 383 transitions. Word has length 101 [2021-10-28 23:02:32,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:02:32,125 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 383 transitions. [2021-10-28 23:02:32,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:02:32,125 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 383 transitions. [2021-10-28 23:02:32,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-10-28 23:02:32,126 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:02:32,127 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, 1] [2021-10-28 23:02:32,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-10-28 23:02:32,127 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:02:32,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:32,128 INFO L85 PathProgramCache]: Analyzing trace with hash -129751462, now seen corresponding path program 1 times [2021-10-28 23:02:32,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:32,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376578736] [2021-10-28 23:02:32,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:32,129 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:32,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:32,206 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 23:02:32,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:32,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376578736] [2021-10-28 23:02:32,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376578736] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:02:32,207 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:02:32,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:02:32,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695533828] [2021-10-28 23:02:32,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:02:32,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:32,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:02:32,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:02:32,209 INFO L87 Difference]: Start difference. First operand 254 states and 383 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 23:02:34,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:02:34,592 INFO L93 Difference]: Finished difference Result 508 states and 768 transitions. [2021-10-28 23:02:34,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:02:34,593 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 23:02:34,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:02:34,595 INFO L225 Difference]: With dead ends: 508 [2021-10-28 23:02:34,595 INFO L226 Difference]: Without dead ends: 275 [2021-10-28 23:02:34,596 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 23:02:34,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-10-28 23:02:34,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 254. [2021-10-28 23:02:34,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 1.5098814229249011) internal successors, (382), 253 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 23:02:34,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 382 transitions. [2021-10-28 23:02:34,606 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 382 transitions. Word has length 102 [2021-10-28 23:02:34,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:02:34,607 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 382 transitions. [2021-10-28 23:02:34,607 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 23:02:34,607 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 382 transitions. [2021-10-28 23:02:34,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-10-28 23:02:34,608 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:02:34,609 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, 1] [2021-10-28 23:02:34,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-10-28 23:02:34,609 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:02:34,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:34,610 INFO L85 PathProgramCache]: Analyzing trace with hash -690451240, now seen corresponding path program 1 times [2021-10-28 23:02:34,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:34,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615083017] [2021-10-28 23:02:34,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:34,611 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:34,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:34,691 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 23:02:34,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:34,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615083017] [2021-10-28 23:02:34,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615083017] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:02:34,692 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:02:34,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:02:34,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496644032] [2021-10-28 23:02:34,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:02:34,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:34,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:02:34,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:02:34,694 INFO L87 Difference]: Start difference. First operand 254 states and 382 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 23:02:37,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:02:37,188 INFO L93 Difference]: Finished difference Result 537 states and 805 transitions. [2021-10-28 23:02:37,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:02:37,188 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 23:02:37,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:02:37,191 INFO L225 Difference]: With dead ends: 537 [2021-10-28 23:02:37,192 INFO L226 Difference]: Without dead ends: 304 [2021-10-28 23:02:37,192 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 23:02:37,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-10-28 23:02:37,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 254. [2021-10-28 23:02:37,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 1.5059288537549407) internal successors, (381), 253 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 23:02:37,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 381 transitions. [2021-10-28 23:02:37,203 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 381 transitions. Word has length 102 [2021-10-28 23:02:37,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:02:37,203 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 381 transitions. [2021-10-28 23:02:37,203 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 23:02:37,204 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 381 transitions. [2021-10-28 23:02:37,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-10-28 23:02:37,205 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:02:37,205 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, 1] [2021-10-28 23:02:37,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-10-28 23:02:37,206 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:02:37,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:37,206 INFO L85 PathProgramCache]: Analyzing trace with hash -460987164, now seen corresponding path program 1 times [2021-10-28 23:02:37,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:37,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138752374] [2021-10-28 23:02:37,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:37,207 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:37,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:37,283 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 23:02:37,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:37,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138752374] [2021-10-28 23:02:37,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138752374] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:02:37,284 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:02:37,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:02:37,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390293336] [2021-10-28 23:02:37,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:02:37,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:37,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:02:37,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:02:37,286 INFO L87 Difference]: Start difference. First operand 254 states and 381 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 23:02:39,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:02:39,630 INFO L93 Difference]: Finished difference Result 508 states and 764 transitions. [2021-10-28 23:02:39,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:02:39,631 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 23:02:39,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:02:39,633 INFO L225 Difference]: With dead ends: 508 [2021-10-28 23:02:39,633 INFO L226 Difference]: Without dead ends: 275 [2021-10-28 23:02:39,634 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 23:02:39,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-10-28 23:02:39,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 254. [2021-10-28 23:02:39,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 1.5019762845849802) internal successors, (380), 253 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 23:02:39,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 380 transitions. [2021-10-28 23:02:39,644 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 380 transitions. Word has length 103 [2021-10-28 23:02:39,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:02:39,644 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 380 transitions. [2021-10-28 23:02:39,645 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 23:02:39,645 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 380 transitions. [2021-10-28 23:02:39,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-10-28 23:02:39,646 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:02:39,646 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, 1] [2021-10-28 23:02:39,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-10-28 23:02:39,647 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:02:39,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:39,648 INFO L85 PathProgramCache]: Analyzing trace with hash -662811098, now seen corresponding path program 1 times [2021-10-28 23:02:39,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:39,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519123458] [2021-10-28 23:02:39,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:39,649 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:39,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:39,727 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 23:02:39,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:39,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519123458] [2021-10-28 23:02:39,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519123458] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:02:39,728 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:02:39,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:02:39,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067111830] [2021-10-28 23:02:39,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:02:39,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:39,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:02:39,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:02:39,730 INFO L87 Difference]: Start difference. First operand 254 states and 380 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 23:02:42,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:02:42,232 INFO L93 Difference]: Finished difference Result 537 states and 801 transitions. [2021-10-28 23:02:42,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:02:42,233 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 23:02:42,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:02:42,235 INFO L225 Difference]: With dead ends: 537 [2021-10-28 23:02:42,235 INFO L226 Difference]: Without dead ends: 304 [2021-10-28 23:02:42,236 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 23:02:42,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-10-28 23:02:42,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 254. [2021-10-28 23:02:42,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 1.4980237154150198) internal successors, (379), 253 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 23:02:42,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 379 transitions. [2021-10-28 23:02:42,248 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 379 transitions. Word has length 103 [2021-10-28 23:02:42,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:02:42,248 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 379 transitions. [2021-10-28 23:02:42,249 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 23:02:42,249 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 379 transitions. [2021-10-28 23:02:42,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-10-28 23:02:42,250 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:02:42,250 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, 1] [2021-10-28 23:02:42,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-10-28 23:02:42,251 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:02:42,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:42,252 INFO L85 PathProgramCache]: Analyzing trace with hash -768373665, now seen corresponding path program 1 times [2021-10-28 23:02:42,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:42,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112143389] [2021-10-28 23:02:42,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:42,253 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:42,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:42,356 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 23:02:42,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:42,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112143389] [2021-10-28 23:02:42,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112143389] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:02:42,357 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:02:42,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:02:42,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026302276] [2021-10-28 23:02:42,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:02:42,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:42,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:02:42,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:02:42,361 INFO L87 Difference]: Start difference. First operand 254 states and 379 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 23:02:44,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:02:44,722 INFO L93 Difference]: Finished difference Result 508 states and 760 transitions. [2021-10-28 23:02:44,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:02:44,722 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 23:02:44,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:02:44,725 INFO L225 Difference]: With dead ends: 508 [2021-10-28 23:02:44,725 INFO L226 Difference]: Without dead ends: 275 [2021-10-28 23:02:44,726 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 23:02:44,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-10-28 23:02:44,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 254. [2021-10-28 23:02:44,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 1.4940711462450593) internal successors, (378), 253 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 23:02:44,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 378 transitions. [2021-10-28 23:02:44,737 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 378 transitions. Word has length 104 [2021-10-28 23:02:44,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:02:44,737 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 378 transitions. [2021-10-28 23:02:44,738 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 23:02:44,738 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 378 transitions. [2021-10-28 23:02:44,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-10-28 23:02:44,739 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:02:44,740 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, 1] [2021-10-28 23:02:44,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-10-28 23:02:44,740 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:02:44,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:44,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1565018973, now seen corresponding path program 1 times [2021-10-28 23:02:44,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:44,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650183339] [2021-10-28 23:02:44,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:44,742 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:44,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:44,818 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 23:02:44,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:44,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650183339] [2021-10-28 23:02:44,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650183339] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:02:44,819 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:02:44,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:02:44,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598297764] [2021-10-28 23:02:44,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:02:44,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:44,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:02:44,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:02:44,821 INFO L87 Difference]: Start difference. First operand 254 states and 378 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 23:02:47,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:02:47,415 INFO L93 Difference]: Finished difference Result 537 states and 797 transitions. [2021-10-28 23:02:47,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:02:47,416 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 23:02:47,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:02:47,418 INFO L225 Difference]: With dead ends: 537 [2021-10-28 23:02:47,418 INFO L226 Difference]: Without dead ends: 304 [2021-10-28 23:02:47,419 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 23:02:47,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-10-28 23:02:47,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 254. [2021-10-28 23:02:47,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 1.4901185770750989) internal successors, (377), 253 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 23:02:47,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 377 transitions. [2021-10-28 23:02:47,430 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 377 transitions. Word has length 104 [2021-10-28 23:02:47,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:02:47,430 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 377 transitions. [2021-10-28 23:02:47,431 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 23:02:47,431 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 377 transitions. [2021-10-28 23:02:47,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-28 23:02:47,432 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:02:47,433 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, 1] [2021-10-28 23:02:47,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-10-28 23:02:47,433 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:02:47,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:47,434 INFO L85 PathProgramCache]: Analyzing trace with hash -336434935, now seen corresponding path program 1 times [2021-10-28 23:02:47,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:47,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715865628] [2021-10-28 23:02:47,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:47,435 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:47,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:47,510 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 23:02:47,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:47,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715865628] [2021-10-28 23:02:47,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715865628] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:02:47,511 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:02:47,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:02:47,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621781320] [2021-10-28 23:02:47,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:02:47,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:47,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:02:47,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:02:47,513 INFO L87 Difference]: Start difference. First operand 254 states and 377 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:02:49,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:02:49,931 INFO L93 Difference]: Finished difference Result 498 states and 744 transitions. [2021-10-28 23:02:49,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:02:49,932 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-10-28 23:02:49,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:02:49,934 INFO L225 Difference]: With dead ends: 498 [2021-10-28 23:02:49,934 INFO L226 Difference]: Without dead ends: 265 [2021-10-28 23:02:49,935 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 23:02:49,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-10-28 23:02:49,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 254. [2021-10-28 23:02:49,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 1.4861660079051384) internal successors, (376), 253 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 23:02:49,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 376 transitions. [2021-10-28 23:02:49,962 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 376 transitions. Word has length 105 [2021-10-28 23:02:49,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:02:49,963 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 376 transitions. [2021-10-28 23:02:49,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:02:49,963 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 376 transitions. [2021-10-28 23:02:49,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-28 23:02:49,965 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:02:49,965 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, 1] [2021-10-28 23:02:49,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-10-28 23:02:49,966 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:02:49,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:49,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1015707189, now seen corresponding path program 1 times [2021-10-28 23:02:49,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:49,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488817783] [2021-10-28 23:02:49,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:49,968 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:50,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:50,048 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 23:02:50,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:50,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488817783] [2021-10-28 23:02:50,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488817783] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:02:50,049 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:02:50,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:02:50,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249672909] [2021-10-28 23:02:50,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:02:50,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:50,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:02:50,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:02:50,051 INFO L87 Difference]: Start difference. First operand 254 states and 376 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:02:52,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:02:52,507 INFO L93 Difference]: Finished difference Result 527 states and 781 transitions. [2021-10-28 23:02:52,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:02:52,508 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-10-28 23:02:52,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:02:52,510 INFO L225 Difference]: With dead ends: 527 [2021-10-28 23:02:52,511 INFO L226 Difference]: Without dead ends: 294 [2021-10-28 23:02:52,512 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 23:02:52,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-10-28 23:02:52,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 254. [2021-10-28 23:02:52,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 1.482213438735178) internal successors, (375), 253 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 23:02:52,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 375 transitions. [2021-10-28 23:02:52,523 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 375 transitions. Word has length 105 [2021-10-28 23:02:52,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:02:52,523 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 375 transitions. [2021-10-28 23:02:52,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:02:52,524 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 375 transitions. [2021-10-28 23:02:52,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-10-28 23:02:52,525 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:02:52,525 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 23:02:52,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-10-28 23:02:52,526 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:02:52,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:52,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1617780493, now seen corresponding path program 1 times [2021-10-28 23:02:52,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:52,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078328976] [2021-10-28 23:02:52,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:52,528 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:52,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:52,604 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 23:02:52,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:52,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078328976] [2021-10-28 23:02:52,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078328976] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:02:52,605 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:02:52,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:02:52,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538667850] [2021-10-28 23:02:52,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:02:52,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:52,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:02:52,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:02:52,607 INFO L87 Difference]: Start difference. First operand 254 states and 375 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 23:02:52,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:02:52,662 INFO L93 Difference]: Finished difference Result 716 states and 1072 transitions. [2021-10-28 23:02:52,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:02:52,663 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 23:02:52,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:02:52,667 INFO L225 Difference]: With dead ends: 716 [2021-10-28 23:02:52,667 INFO L226 Difference]: Without dead ends: 483 [2021-10-28 23:02:52,668 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 23:02:52,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2021-10-28 23:02:52,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2021-10-28 23:02:52,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.4854771784232366) internal successors, (716), 482 states have internal predecessors, (716), 0 states have call successors, (0), 0 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 23:02:52,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 716 transitions. [2021-10-28 23:02:52,689 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 716 transitions. Word has length 108 [2021-10-28 23:02:52,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:02:52,689 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 716 transitions. [2021-10-28 23:02:52,690 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 23:02:52,690 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 716 transitions. [2021-10-28 23:02:52,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-10-28 23:02:52,692 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:02:52,692 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 23:02:52,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-10-28 23:02:52,693 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:02:52,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:52,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1461033077, now seen corresponding path program 1 times [2021-10-28 23:02:52,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:52,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774150748] [2021-10-28 23:02:52,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:52,694 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:52,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:52,757 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 23:02:52,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:52,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774150748] [2021-10-28 23:02:52,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774150748] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:02:52,758 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:02:52,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:02:52,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513919496] [2021-10-28 23:02:52,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:02:52,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:52,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:02:52,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:02:52,761 INFO L87 Difference]: Start difference. First operand 483 states and 716 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 23:02:52,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:02:52,801 INFO L93 Difference]: Finished difference Result 972 states and 1444 transitions. [2021-10-28 23:02:52,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:02:52,802 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 23:02:52,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:02:52,806 INFO L225 Difference]: With dead ends: 972 [2021-10-28 23:02:52,806 INFO L226 Difference]: Without dead ends: 510 [2021-10-28 23:02:52,807 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 23:02:52,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2021-10-28 23:02:52,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 510. [2021-10-28 23:02:52,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 509 states have (on average 1.475442043222004) internal successors, (751), 509 states have internal predecessors, (751), 0 states have call successors, (0), 0 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 23:02:52,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 751 transitions. [2021-10-28 23:02:52,828 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 751 transitions. Word has length 108 [2021-10-28 23:02:52,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:02:52,828 INFO L470 AbstractCegarLoop]: Abstraction has 510 states and 751 transitions. [2021-10-28 23:02:52,828 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 23:02:52,829 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 751 transitions. [2021-10-28 23:02:52,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-10-28 23:02:52,858 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:02:52,858 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 23:02:52,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-10-28 23:02:52,859 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:02:52,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:52,860 INFO L85 PathProgramCache]: Analyzing trace with hash 874756855, now seen corresponding path program 1 times [2021-10-28 23:02:52,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:52,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930672817] [2021-10-28 23:02:52,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:52,861 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:52,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:52,912 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 23:02:52,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:52,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930672817] [2021-10-28 23:02:52,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930672817] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:02:52,913 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:02:52,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:02:52,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871656685] [2021-10-28 23:02:52,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:02:52,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:52,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:02:52,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:02:52,915 INFO L87 Difference]: Start difference. First operand 510 states and 751 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 23:02:52,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:02:52,946 INFO L93 Difference]: Finished difference Result 1001 states and 1480 transitions. [2021-10-28 23:02:52,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:02:52,946 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 23:02:52,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:02:52,950 INFO L225 Difference]: With dead ends: 1001 [2021-10-28 23:02:52,950 INFO L226 Difference]: Without dead ends: 512 [2021-10-28 23:02:52,953 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 23:02:52,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2021-10-28 23:02:52,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 512. [2021-10-28 23:02:52,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 511 states have (on average 1.4735812133072408) internal successors, (753), 511 states have internal predecessors, (753), 0 states have call successors, (0), 0 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 23:02:52,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 753 transitions. [2021-10-28 23:02:52,973 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 753 transitions. Word has length 108 [2021-10-28 23:02:52,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:02:52,974 INFO L470 AbstractCegarLoop]: Abstraction has 512 states and 753 transitions. [2021-10-28 23:02:52,974 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 23:02:52,974 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 753 transitions. [2021-10-28 23:02:52,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-10-28 23:02:52,976 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:02:52,976 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 23:02:52,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-10-28 23:02:52,977 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:02:52,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:52,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1658817010, now seen corresponding path program 1 times [2021-10-28 23:02:52,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:52,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056866076] [2021-10-28 23:02:52,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:52,978 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:53,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:53,065 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-10-28 23:02:53,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:53,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056866076] [2021-10-28 23:02:53,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056866076] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:02:53,067 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:02:53,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:02:53,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036493874] [2021-10-28 23:02:53,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:02:53,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:53,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:02:53,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:02:53,071 INFO L87 Difference]: Start difference. First operand 512 states and 753 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:02:53,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:02:53,116 INFO L93 Difference]: Finished difference Result 1001 states and 1479 transitions. [2021-10-28 23:02:53,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:02:53,117 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2021-10-28 23:02:53,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:02:53,121 INFO L225 Difference]: With dead ends: 1001 [2021-10-28 23:02:53,121 INFO L226 Difference]: Without dead ends: 512 [2021-10-28 23:02:53,122 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 23:02:53,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2021-10-28 23:02:53,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 512. [2021-10-28 23:02:53,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 511 states have (on average 1.4637964774951076) internal successors, (748), 511 states have internal predecessors, (748), 0 states have call successors, (0), 0 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 23:02:53,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 748 transitions. [2021-10-28 23:02:53,143 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 748 transitions. Word has length 127 [2021-10-28 23:02:53,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:02:53,144 INFO L470 AbstractCegarLoop]: Abstraction has 512 states and 748 transitions. [2021-10-28 23:02:53,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:02:53,144 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 748 transitions. [2021-10-28 23:02:53,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-10-28 23:02:53,146 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:02:53,147 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, 1] [2021-10-28 23:02:53,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-10-28 23:02:53,147 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:02:53,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:53,148 INFO L85 PathProgramCache]: Analyzing trace with hash -116280318, now seen corresponding path program 1 times [2021-10-28 23:02:53,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:53,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604995012] [2021-10-28 23:02:53,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:53,149 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:53,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:02:53,567 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 23:02:53,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:02:53,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604995012] [2021-10-28 23:02:53,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604995012] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:02:53,568 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:02:53,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:02:53,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383938640] [2021-10-28 23:02:53,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:02:53,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:02:53,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:02:53,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:02:53,572 INFO L87 Difference]: Start difference. First operand 512 states and 748 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:02:58,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:02:58,046 INFO L93 Difference]: Finished difference Result 1021 states and 1492 transitions. [2021-10-28 23:02:58,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:02:58,047 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2021-10-28 23:02:58,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:02:58,050 INFO L225 Difference]: With dead ends: 1021 [2021-10-28 23:02:58,050 INFO L226 Difference]: Without dead ends: 512 [2021-10-28 23:02:58,050 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 23:02:58,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2021-10-28 23:02:58,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 512. [2021-10-28 23:02:58,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 511 states have (on average 1.461839530332681) internal successors, (747), 511 states have internal predecessors, (747), 0 states have call successors, (0), 0 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 23:02:58,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 747 transitions. [2021-10-28 23:02:58,072 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 747 transitions. Word has length 128 [2021-10-28 23:02:58,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:02:58,073 INFO L470 AbstractCegarLoop]: Abstraction has 512 states and 747 transitions. [2021-10-28 23:02:58,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:02:58,073 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 747 transitions. [2021-10-28 23:02:58,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-10-28 23:02:58,075 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:02:58,076 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, 1] [2021-10-28 23:02:58,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-10-28 23:02:58,076 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:02:58,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:02:58,077 INFO L85 PathProgramCache]: Analyzing trace with hash -545938624, now seen corresponding path program 1 times [2021-10-28 23:02:58,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:02:58,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489816741] [2021-10-28 23:02:58,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:02:58,078 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:02:58,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:02:58,399 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:02:58,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:02:58,875 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:02:58,875 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:02:58,877 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:02:58,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-10-28 23:02:58,885 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 23:02:58,891 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:02:59,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:02:59 BoogieIcfgContainer [2021-10-28 23:02:59,130 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:02:59,131 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:02:59,131 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:02:59,131 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:02:59,132 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:01:18" (3/4) ... [2021-10-28 23:02:59,137 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 23:02:59,138 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:02:59,140 INFO L168 Benchmark]: Toolchain (without parser) took 105227.99 ms. Allocated memory was 92.3 MB in the beginning and 163.6 MB in the end (delta: 71.3 MB). Free memory was 67.9 MB in the beginning and 115.6 MB in the end (delta: -47.7 MB). Peak memory consumption was 22.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:02:59,140 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 92.3 MB. Free memory was 66.4 MB in the beginning and 66.3 MB in the end (delta: 77.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:02:59,141 INFO L168 Benchmark]: CACSL2BoogieTranslator took 755.14 ms. Allocated memory is still 92.3 MB. Free memory was 67.6 MB in the beginning and 46.2 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-28 23:02:59,142 INFO L168 Benchmark]: Boogie Procedure Inliner took 122.67 ms. Allocated memory is still 92.3 MB. Free memory was 46.2 MB in the beginning and 41.4 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:02:59,142 INFO L168 Benchmark]: Boogie Preprocessor took 138.00 ms. Allocated memory was 92.3 MB in the beginning and 123.7 MB in the end (delta: 31.5 MB). Free memory was 41.4 MB in the beginning and 94.9 MB in the end (delta: -53.5 MB). Peak memory consumption was 12.9 MB. Max. memory is 16.1 GB. [2021-10-28 23:02:59,143 INFO L168 Benchmark]: RCFGBuilder took 3360.16 ms. Allocated memory is still 123.7 MB. Free memory was 95.3 MB in the beginning and 63.1 MB in the end (delta: 32.2 MB). Peak memory consumption was 41.9 MB. Max. memory is 16.1 GB. [2021-10-28 23:02:59,144 INFO L168 Benchmark]: TraceAbstraction took 100825.01 ms. Allocated memory was 123.7 MB in the beginning and 163.6 MB in the end (delta: 39.8 MB). Free memory was 62.3 MB in the beginning and 116.6 MB in the end (delta: -54.3 MB). Peak memory consumption was 67.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:02:59,145 INFO L168 Benchmark]: Witness Printer took 7.06 ms. Allocated memory is still 163.6 MB. Free memory was 116.6 MB in the beginning and 115.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:02:59,148 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 92.3 MB. Free memory was 66.4 MB in the beginning and 66.3 MB in the end (delta: 77.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 755.14 ms. Allocated memory is still 92.3 MB. Free memory was 67.6 MB in the beginning and 46.2 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 122.67 ms. Allocated memory is still 92.3 MB. Free memory was 46.2 MB in the beginning and 41.4 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 138.00 ms. Allocated memory was 92.3 MB in the beginning and 123.7 MB in the end (delta: 31.5 MB). Free memory was 41.4 MB in the beginning and 94.9 MB in the end (delta: -53.5 MB). Peak memory consumption was 12.9 MB. Max. memory is 16.1 GB. * RCFGBuilder took 3360.16 ms. Allocated memory is still 123.7 MB. Free memory was 95.3 MB in the beginning and 63.1 MB in the end (delta: 32.2 MB). Peak memory consumption was 41.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 100825.01 ms. Allocated memory was 123.7 MB in the beginning and 163.6 MB in the end (delta: 39.8 MB). Free memory was 62.3 MB in the beginning and 116.6 MB in the end (delta: -54.3 MB). Peak memory consumption was 67.1 MB. Max. memory is 16.1 GB. * Witness Printer took 7.06 ms. Allocated memory is still 163.6 MB. Free memory was 116.6 MB in the beginning and 115.6 MB in the end (delta: 1.0 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: 1737]: 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 1151. Possible FailurePath: [L1054] static int init = 1; [L1055] static SSL_METHOD SSLv3_server_data ; VAL [init=1, SSLv3_server_data={4294967305:0}] [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 = (BUF_MEM *)__VERIFIER_nondet_ulong(); [L1113] unsigned long l ; [L1114] unsigned long Time ; [L1115] unsigned long tmp = __VERIFIER_nondet_long() ; [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 ; [L1126] int tmp___4 ; [L1127] int tmp___5 ; [L1128] int tmp___6 ; [L1129] int tmp___7 ; [L1130] long tmp___8 = __VERIFIER_nondet_long() ; [L1131] int tmp___9 ; [L1132] int tmp___10 ; [L1133] int blastFlag ; [L1137] blastFlag = 0 [L1138] s->hit=__VERIFIER_nondet_int () [L1139] s->state = 8464 [L1140] Time = tmp [L1141] cb = (void (*)())((void *)0) [L1142] ret = -1 [L1143] skip = 0 [L1144] got_new_session = 0 [L1145] EXPR s->info_callback VAL [init=1, SSLv3_server_data={4294967305:0}] [L1145] COND TRUE (unsigned long )s->info_callback != (unsigned long )((void *)0) [L1146] EXPR s->info_callback [L1146] cb = s->info_callback [L1150] EXPR s->in_handshake [L1150] s->in_handshake += 1 [L1151] COND FALSE !(tmp___1 & 12288) VAL [init=1, SSLv3_server_data={4294967305:0}] [L1160] EXPR s->cert VAL [init=1, SSLv3_server_data={4294967305:0}] [L1160] COND FALSE !((unsigned long )s->cert == (unsigned long )((void *)0)) [L1166] COND TRUE 1 VAL [init=1, SSLv3_server_data={4294967305:0}] [L1168] EXPR s->state [L1168] state = s->state [L1169] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1169] COND FALSE !(s->state == 12292) [L1172] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1172] COND FALSE !(s->state == 16384) [L1175] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1175] COND FALSE !(s->state == 8192) [L1178] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1178] COND FALSE !(s->state == 24576) [L1181] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1181] COND FALSE !(s->state == 8195) [L1184] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1184] COND FALSE !(s->state == 8480) [L1187] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1187] COND FALSE !(s->state == 8481) [L1190] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1190] COND FALSE !(s->state == 8482) [L1193] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1193] COND TRUE s->state == 8464 [L1349] s->shutdown = 0 [L1350] ret = __VERIFIER_nondet_int() [L1351] COND TRUE blastFlag == 0 [L1352] blastFlag = 1 VAL [init=1, SSLv3_server_data={4294967305:0}] [L1356] COND FALSE !(ret <= 0) [L1361] got_new_session = 1 [L1362] s->state = 8496 [L1363] s->init_num = 0 VAL [init=1, SSLv3_server_data={4294967305:0}] [L1696] EXPR s->s3 [L1696] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={4294967305:0}] [L1696] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1725] skip = 0 VAL [init=1, SSLv3_server_data={4294967305:0}] [L1166] COND TRUE 1 VAL [init=1, SSLv3_server_data={4294967305:0}] [L1168] EXPR s->state [L1168] state = s->state [L1169] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1169] COND FALSE !(s->state == 12292) [L1172] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1172] COND FALSE !(s->state == 16384) [L1175] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1175] COND FALSE !(s->state == 8192) [L1178] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1178] COND FALSE !(s->state == 24576) [L1181] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1181] COND FALSE !(s->state == 8195) [L1184] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1184] COND FALSE !(s->state == 8480) [L1187] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1187] COND FALSE !(s->state == 8481) [L1190] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1190] COND FALSE !(s->state == 8482) [L1193] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1193] COND FALSE !(s->state == 8464) [L1196] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1196] COND FALSE !(s->state == 8465) [L1199] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1199] COND FALSE !(s->state == 8466) [L1202] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1202] COND TRUE s->state == 8496 [L1367] ret = __VERIFIER_nondet_int() [L1368] COND TRUE blastFlag == 1 [L1369] blastFlag = 2 VAL [init=1, SSLv3_server_data={4294967305:0}] [L1373] COND FALSE !(ret <= 0) [L1378] s->hit VAL [init=1, SSLv3_server_data={4294967305:0}] [L1378] COND TRUE s->hit [L1379] s->state = 8656 VAL [init=1, SSLv3_server_data={4294967305:0}] [L1383] s->init_num = 0 VAL [init=1, SSLv3_server_data={4294967305:0}] [L1696] EXPR s->s3 [L1696] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={4294967305:0}] [L1696] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1725] skip = 0 VAL [init=1, SSLv3_server_data={4294967305:0}] [L1166] COND TRUE 1 VAL [init=1, SSLv3_server_data={4294967305:0}] [L1168] EXPR s->state [L1168] state = s->state [L1169] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1169] COND FALSE !(s->state == 12292) [L1172] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1172] COND FALSE !(s->state == 16384) [L1175] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1175] COND FALSE !(s->state == 8192) [L1178] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1178] COND FALSE !(s->state == 24576) [L1181] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1181] COND FALSE !(s->state == 8195) [L1184] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1184] COND FALSE !(s->state == 8480) [L1187] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1187] COND FALSE !(s->state == 8481) [L1190] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1190] COND FALSE !(s->state == 8482) [L1193] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1193] COND FALSE !(s->state == 8464) [L1196] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1196] COND FALSE !(s->state == 8465) [L1199] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1199] COND FALSE !(s->state == 8466) [L1202] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1202] COND FALSE !(s->state == 8496) [L1205] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1205] COND FALSE !(s->state == 8497) [L1208] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1208] COND FALSE !(s->state == 8512) [L1211] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1211] COND FALSE !(s->state == 8513) [L1214] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1214] COND FALSE !(s->state == 8528) [L1217] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1217] COND FALSE !(s->state == 8529) [L1220] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1220] COND FALSE !(s->state == 8544) [L1223] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1223] COND FALSE !(s->state == 8545) [L1226] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1226] COND FALSE !(s->state == 8560) [L1229] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1229] COND FALSE !(s->state == 8561) [L1232] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1232] COND FALSE !(s->state == 8448) [L1235] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1235] COND FALSE !(s->state == 8576) [L1238] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1238] COND FALSE !(s->state == 8577) [L1241] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1241] COND FALSE !(s->state == 8592) [L1244] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1244] COND FALSE !(s->state == 8593) [L1247] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1247] COND FALSE !(s->state == 8608) [L1250] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1250] COND FALSE !(s->state == 8609) [L1253] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1253] COND FALSE !(s->state == 8640) [L1256] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1256] COND FALSE !(s->state == 8641) [L1259] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1259] COND TRUE s->state == 8656 [L1583] EXPR s->session [L1583] EXPR s->s3 [L1583] EXPR (s->s3)->tmp.new_cipher [L1583] (s->session)->cipher = (s->s3)->tmp.new_cipher [L1584] tmp___9 = __VERIFIER_nondet_int() [L1585] COND FALSE !(! tmp___9) [L1591] ret = __VERIFIER_nondet_int() [L1592] COND TRUE blastFlag == 2 [L1593] blastFlag = 5 VAL [init=1, SSLv3_server_data={4294967305:0}] [L1597] COND FALSE !(ret <= 0) [L1602] s->state = 8672 [L1603] s->init_num = 0 [L1604] tmp___10 = __VERIFIER_nondet_int() [L1605] COND FALSE !(! tmp___10) VAL [init=1, SSLv3_server_data={4294967305:0}] [L1696] EXPR s->s3 [L1696] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={4294967305:0}] [L1696] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1725] skip = 0 VAL [init=1, SSLv3_server_data={4294967305:0}] [L1166] COND TRUE 1 VAL [init=1, SSLv3_server_data={4294967305:0}] [L1168] EXPR s->state [L1168] state = s->state [L1169] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1169] COND FALSE !(s->state == 12292) [L1172] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1172] COND FALSE !(s->state == 16384) [L1175] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1175] COND FALSE !(s->state == 8192) [L1178] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1178] COND FALSE !(s->state == 24576) [L1181] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1181] COND FALSE !(s->state == 8195) [L1184] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1184] COND FALSE !(s->state == 8480) [L1187] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1187] COND FALSE !(s->state == 8481) [L1190] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1190] COND FALSE !(s->state == 8482) [L1193] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1193] COND FALSE !(s->state == 8464) [L1196] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1196] COND FALSE !(s->state == 8465) [L1199] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1199] COND FALSE !(s->state == 8466) [L1202] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1202] COND FALSE !(s->state == 8496) [L1205] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1205] COND FALSE !(s->state == 8497) [L1208] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1208] COND FALSE !(s->state == 8512) [L1211] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1211] COND FALSE !(s->state == 8513) [L1214] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1214] COND FALSE !(s->state == 8528) [L1217] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1217] COND FALSE !(s->state == 8529) [L1220] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1220] COND FALSE !(s->state == 8544) [L1223] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1223] COND FALSE !(s->state == 8545) [L1226] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1226] COND FALSE !(s->state == 8560) [L1229] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1229] COND FALSE !(s->state == 8561) [L1232] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1232] COND FALSE !(s->state == 8448) [L1235] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1235] COND FALSE !(s->state == 8576) [L1238] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1238] COND FALSE !(s->state == 8577) [L1241] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1241] COND FALSE !(s->state == 8592) [L1244] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1244] COND FALSE !(s->state == 8593) [L1247] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1247] COND FALSE !(s->state == 8608) [L1250] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1250] COND FALSE !(s->state == 8609) [L1253] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1253] COND FALSE !(s->state == 8640) [L1256] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1256] COND FALSE !(s->state == 8641) [L1259] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1259] COND FALSE !(s->state == 8656) [L1262] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1262] COND FALSE !(s->state == 8657) [L1265] EXPR s->state VAL [init=1, SSLv3_server_data={4294967305:0}] [L1265] COND TRUE s->state == 8672 [L1614] ret = __VERIFIER_nondet_int() [L1615] COND FALSE !(blastFlag == 4) VAL [init=1, SSLv3_server_data={4294967305:0}] [L1618] COND TRUE blastFlag == 5 VAL [init=1, SSLv3_server_data={4294967305:0}] [L1737] reach_error() VAL [init=1, SSLv3_server_data={4294967305:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 147 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 100.5s, OverallIterations: 42, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 94.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 8199 SDtfs, 2141 SDslu, 11719 SDs, 0 SdLazy, 6840 SolverSat, 342 SolverUnsat, 39 SolverUnknown, 0 SolverNotchecked, 89.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 230 GetRequests, 83 SyntacticMatches, 28 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=512occurred in iteration=39, InterpolantAutomatonStates: 164, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 41 MinimizatonAttempts, 868 StatesRemovedByMinimization, 36 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 3750 NumberOfCodeBlocks, 3750 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 3581 ConstructedInterpolants, 0 QuantifiedInterpolants, 9484 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 41 InterpolantComputations, 41 PerfectInterpolantSequences, 1856/1856 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 23:02:59,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/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 23:03:02,202 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2021-10-28 23:03:02,263 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:03:02,265 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:03:02,267 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:03:02,269 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:03:02,271 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:03:02,272 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:03:02,282 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:03:02,285 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:03:02,288 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:03:02,290 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:03:02,292 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:03:02,293 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:03:02,299 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:03:02,299 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:03:02,300 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:03:02,302 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:03:02,302 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:03:02,304 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:03:02,305 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:03:02,306 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:03:02,308 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:03:02,309 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:03:02,311 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:03:02,312 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:03:02,313 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:03:02,314 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:03:02,315 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:03:02,316 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:03:02,318 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:03:02,319 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-28 23:03:02,355 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:03:02,356 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:03:02,357 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:03:02,357 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:03:02,359 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:03:02,360 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:03:02,360 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:03:02,361 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:03:02,362 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:03:02,362 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:03:02,363 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:03:02,366 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:03:02,366 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:03:02,367 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:03:02,368 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 23:03:02,368 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 23:03:02,369 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:03:02,371 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:03:02,371 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:03:02,371 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:03:02,372 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:03:02,372 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:03:02,372 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:03:02,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:03:02,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:03:02,374 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:03:02,374 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:03:02,375 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 23:03:02,376 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 23:03:02,376 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:03:02,377 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:03:02,377 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:03:02,377 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:03:02,378 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 23:03:02,378 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_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a1fff1f2750aedbe7119b44ad3cdc8a2dbfa05ad8147a422ae9aeb0054d6e253 [2021-10-28 23:03:02,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:03:02,923 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:03:02,927 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:03:02,928 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:03:02,930 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:03:02,931 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-2.c [2021-10-28 23:03:03,013 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/bin/uautomizer-GMMbpWq8iD/data/b87e19c3b/9a43346836414ca09850632abd19cae3/FLAG4013b5095 [2021-10-28 23:03:03,872 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:03:03,873 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-2.c [2021-10-28 23:03:03,909 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/bin/uautomizer-GMMbpWq8iD/data/b87e19c3b/9a43346836414ca09850632abd19cae3/FLAG4013b5095 [2021-10-28 23:03:04,014 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/bin/uautomizer-GMMbpWq8iD/data/b87e19c3b/9a43346836414ca09850632abd19cae3 [2021-10-28 23:03:04,019 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:03:04,022 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:03:04,025 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:03:04,026 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:03:04,030 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:03:04,032 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:03:04" (1/1) ... [2021-10-28 23:03:04,034 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a8488f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:03:04, skipping insertion in model container [2021-10-28 23:03:04,034 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:03:04" (1/1) ... [2021-10-28 23:03:04,044 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:03:04,147 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:03:04,916 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_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-2.c[72913,72926] [2021-10-28 23:03:04,933 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:03:04,980 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:03:05,157 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_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-2.c[72913,72926] [2021-10-28 23:03:05,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:03:05,205 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:03:05,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:03:05 WrapperNode [2021-10-28 23:03:05,206 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:03:05,209 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:03:05,209 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:03:05,209 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:03:05,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:03:05" (1/1) ... [2021-10-28 23:03:05,281 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:03:05" (1/1) ... [2021-10-28 23:03:05,370 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:03:05,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:03:05,380 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:03:05,381 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:03:05,392 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:03:05" (1/1) ... [2021-10-28 23:03:05,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:03:05" (1/1) ... [2021-10-28 23:03:05,415 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:03:05" (1/1) ... [2021-10-28 23:03:05,423 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:03:05" (1/1) ... [2021-10-28 23:03:05,511 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:03:05" (1/1) ... [2021-10-28 23:03:05,535 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:03:05" (1/1) ... [2021-10-28 23:03:05,539 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:03:05" (1/1) ... [2021-10-28 23:03:05,548 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:03:05,549 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:03:05,549 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:03:05,550 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:03:05,551 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:03:05" (1/1) ... [2021-10-28 23:03:05,572 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:03:05,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:03:05,606 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:03:05,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:03:05,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 23:03:05,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 23:03:05,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:03:05,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-28 23:03:05,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 23:03:05,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 23:03:05,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:03:05,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:03:05,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-28 23:03:05,981 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-28 23:03:10,932 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-10-28 23:03:10,933 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-10-28 23:03:10,953 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:03:10,954 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-28 23:03:10,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:03:10 BoogieIcfgContainer [2021-10-28 23:03:10,957 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:03:10,963 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:03:10,963 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:03:10,967 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:03:10,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:03:04" (1/3) ... [2021-10-28 23:03:10,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56713bfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:03:10, skipping insertion in model container [2021-10-28 23:03:10,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:03:05" (2/3) ... [2021-10-28 23:03:10,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56713bfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:03:10, skipping insertion in model container [2021-10-28 23:03:10,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:03:10" (3/3) ... [2021-10-28 23:03:10,973 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.01.i.cil-2.c [2021-10-28 23:03:10,981 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:03:10,981 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 23:03:11,069 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:03:11,083 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 23:03:11,083 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 23:03:11,130 INFO L276 IsEmpty]: Start isEmpty. Operand has 147 states, 145 states have (on average 1.696551724137931) internal successors, (246), 146 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 23:03:11,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-28 23:03:11,155 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:03:11,156 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 23:03:11,156 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:03:11,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:03:11,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1430116946, now seen corresponding path program 1 times [2021-10-28 23:03:11,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:03:11,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1771606720] [2021-10-28 23:03:11,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:03:11,190 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:03:11,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:03:11,199 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:03:11,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 23:03:11,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:03:11,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:03:11,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:03:12,130 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 23:03:12,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:03:12,606 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 23:03:12,607 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:03:12,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1771606720] [2021-10-28 23:03:12,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1771606720] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:03:12,608 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:03:12,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-28 23:03:12,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152062820] [2021-10-28 23:03:12,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:03:12,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:03:12,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:03:12,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:03:12,640 INFO L87 Difference]: Start difference. First operand has 147 states, 145 states have (on average 1.696551724137931) internal successors, (246), 146 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) 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 23:03:12,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:03:12,907 INFO L93 Difference]: Finished difference Result 551 states and 928 transitions. [2021-10-28 23:03:12,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:03:12,910 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 23:03:12,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:03:12,930 INFO L225 Difference]: With dead ends: 551 [2021-10-28 23:03:12,931 INFO L226 Difference]: Without dead ends: 375 [2021-10-28 23:03:12,935 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 23:03:12,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2021-10-28 23:03:13,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 373. [2021-10-28 23:03:13,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 372 states have (on average 1.5188172043010753) internal successors, (565), 372 states have internal predecessors, (565), 0 states have call successors, (0), 0 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 23:03:13,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 565 transitions. [2021-10-28 23:03:13,061 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 565 transitions. Word has length 47 [2021-10-28 23:03:13,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:03:13,062 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 565 transitions. [2021-10-28 23:03:13,062 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 23:03:13,063 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 565 transitions. [2021-10-28 23:03:13,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-28 23:03:13,073 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:03:13,074 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, 1] [2021-10-28 23:03:13,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:03:13,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:03:13,288 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:03:13,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:03:13,289 INFO L85 PathProgramCache]: Analyzing trace with hash 315021975, now seen corresponding path program 1 times [2021-10-28 23:03:13,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:03:13,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1118887580] [2021-10-28 23:03:13,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:03:13,291 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:03:13,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:03:13,292 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:03:13,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 23:03:13,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:03:13,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:03:13,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:03:14,016 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 23:03:14,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:03:14,467 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 23:03:14,467 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:03:14,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1118887580] [2021-10-28 23:03:14,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1118887580] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:03:14,468 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:03:14,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-28 23:03:14,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134378979] [2021-10-28 23:03:14,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:03:14,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:03:14,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:03:14,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:03:14,473 INFO L87 Difference]: Start difference. First operand 373 states and 565 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 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 23:03:14,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:03:14,649 INFO L93 Difference]: Finished difference Result 855 states and 1302 transitions. [2021-10-28 23:03:14,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:03:14,650 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-10-28 23:03:14,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:03:14,657 INFO L225 Difference]: With dead ends: 855 [2021-10-28 23:03:14,658 INFO L226 Difference]: Without dead ends: 613 [2021-10-28 23:03:14,663 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 126 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 23:03:14,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2021-10-28 23:03:14,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 611. [2021-10-28 23:03:14,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 610 states have (on average 1.5163934426229508) internal successors, (925), 610 states have internal predecessors, (925), 0 states have call successors, (0), 0 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 23:03:14,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 925 transitions. [2021-10-28 23:03:14,740 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 925 transitions. Word has length 65 [2021-10-28 23:03:14,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:03:14,740 INFO L470 AbstractCegarLoop]: Abstraction has 611 states and 925 transitions. [2021-10-28 23:03:14,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 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 23:03:14,749 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 925 transitions. [2021-10-28 23:03:14,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-10-28 23:03:14,763 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:03:14,764 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:03:14,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:03:14,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:03:14,978 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:03:14,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:03:14,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1540639451, now seen corresponding path program 1 times [2021-10-28 23:03:14,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:03:14,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [664641548] [2021-10-28 23:03:14,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:03:14,981 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:03:14,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:03:14,982 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:03:15,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 23:03:15,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:03:15,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:03:15,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:03:16,105 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-28 23:03:16,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:03:16,764 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-28 23:03:16,765 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:03:16,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [664641548] [2021-10-28 23:03:16,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [664641548] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:03:16,766 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:03:16,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-28 23:03:16,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169695742] [2021-10-28 23:03:16,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:03:16,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:03:16,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:03:16,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:03:16,777 INFO L87 Difference]: Start difference. First operand 611 states and 925 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 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 23:03:16,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:03:16,930 INFO L93 Difference]: Finished difference Result 1093 states and 1657 transitions. [2021-10-28 23:03:16,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:03:16,931 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 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 125 [2021-10-28 23:03:16,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:03:16,937 INFO L225 Difference]: With dead ends: 1093 [2021-10-28 23:03:16,938 INFO L226 Difference]: Without dead ends: 613 [2021-10-28 23:03:16,939 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 246 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 23:03:16,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2021-10-28 23:03:16,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 613. [2021-10-28 23:03:16,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 612 states have (on average 1.5049019607843137) internal successors, (921), 612 states have internal predecessors, (921), 0 states have call successors, (0), 0 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 23:03:16,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 921 transitions. [2021-10-28 23:03:16,980 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 921 transitions. Word has length 125 [2021-10-28 23:03:16,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:03:16,981 INFO L470 AbstractCegarLoop]: Abstraction has 613 states and 921 transitions. [2021-10-28 23:03:16,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 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 23:03:16,982 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 921 transitions. [2021-10-28 23:03:16,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-10-28 23:03:16,984 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:03:16,985 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, 1] [2021-10-28 23:03:17,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 23:03:17,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:03:17,207 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:03:17,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:03:17,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1760202500, now seen corresponding path program 1 times [2021-10-28 23:03:17,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:03:17,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [124089325] [2021-10-28 23:03:17,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:03:17,210 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:03:17,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:03:17,211 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:03:17,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-28 23:03:17,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:03:17,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-28 23:03:17,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:03:17,958 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 23:03:17,979 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 23:03:18,200 INFO L354 Elim1Store]: treesize reduction 96, result has 16.5 percent of original size [2021-10-28 23:03:18,200 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 23:03:18,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 23:03:18,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 23:03:18,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 23:03:18,248 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 23:03:18,393 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-10-28 23:03:18,394 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 23:03:18,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-28 23:03:18,420 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 23:03:18,513 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 23:03:18,522 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 23:03:19,121 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 23:03:19,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:03:20,084 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 23:03:20,085 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:03:20,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [124089325] [2021-10-28 23:03:20,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [124089325] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:03:20,086 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:03:20,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-28 23:03:20,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465925285] [2021-10-28 23:03:20,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:03:20,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:03:20,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:03:20,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:03:20,089 INFO L87 Difference]: Start difference. First operand 613 states and 921 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 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 23:03:30,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:03:30,484 INFO L93 Difference]: Finished difference Result 1223 states and 1838 transitions. [2021-10-28 23:03:30,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:03:30,486 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 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 128 [2021-10-28 23:03:30,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:03:30,492 INFO L225 Difference]: With dead ends: 1223 [2021-10-28 23:03:30,492 INFO L226 Difference]: Without dead ends: 613 [2021-10-28 23:03:30,494 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 247 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:03:30,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2021-10-28 23:03:30,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 613. [2021-10-28 23:03:30,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 612 states have (on average 1.5032679738562091) internal successors, (920), 612 states have internal predecessors, (920), 0 states have call successors, (0), 0 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 23:03:30,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 920 transitions. [2021-10-28 23:03:30,527 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 920 transitions. Word has length 128 [2021-10-28 23:03:30,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:03:30,528 INFO L470 AbstractCegarLoop]: Abstraction has 613 states and 920 transitions. [2021-10-28 23:03:30,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 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 23:03:30,529 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 920 transitions. [2021-10-28 23:03:30,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-10-28 23:03:30,531 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:03:30,531 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, 1] [2021-10-28 23:03:30,550 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-28 23:03:30,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:03:30,748 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:03:30,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:03:30,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1330544194, now seen corresponding path program 1 times [2021-10-28 23:03:30,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:03:30,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1716051862] [2021-10-28 23:03:30,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:03:30,750 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:03:30,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:03:30,752 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:03:30,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-28 23:03:31,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:03:31,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:03:31,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:03:31,742 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 23:03:31,801 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-10-28 23:03:31,802 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 23 treesize of output 22 [2021-10-28 23:03:32,280 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-28 23:03:32,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 10 [2021-10-28 23:03:32,576 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-10-28 23:03:32,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:03:33,230 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-10-28 23:03:33,230 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:03:33,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1716051862] [2021-10-28 23:03:33,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1716051862] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:03:33,231 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:03:33,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 5 [2021-10-28 23:03:33,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958069330] [2021-10-28 23:03:33,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:03:33,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:03:33,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:03:33,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:03:33,234 INFO L87 Difference]: Start difference. First operand 613 states and 920 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 0 states have call successors, (0), 0 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 23:03:38,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:03:38,034 INFO L93 Difference]: Finished difference Result 1420 states and 2131 transitions. [2021-10-28 23:03:38,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:03:38,036 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 0 states have call successors, (0), 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 128 [2021-10-28 23:03:38,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:03:38,043 INFO L225 Difference]: With dead ends: 1420 [2021-10-28 23:03:38,044 INFO L226 Difference]: Without dead ends: 817 [2021-10-28 23:03:38,045 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 250 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:03:38,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2021-10-28 23:03:38,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 713. [2021-10-28 23:03:38,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 712 states have (on average 1.5337078651685394) internal successors, (1092), 712 states have internal predecessors, (1092), 0 states have call successors, (0), 0 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 23:03:38,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1092 transitions. [2021-10-28 23:03:38,085 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1092 transitions. Word has length 128 [2021-10-28 23:03:38,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:03:38,086 INFO L470 AbstractCegarLoop]: Abstraction has 713 states and 1092 transitions. [2021-10-28 23:03:38,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 0 states have call successors, (0), 0 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 23:03:38,087 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1092 transitions. [2021-10-28 23:03:38,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-10-28 23:03:38,089 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:03:38,090 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, 1] [2021-10-28 23:03:38,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-28 23:03:38,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:03:38,304 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:03:38,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:03:38,304 INFO L85 PathProgramCache]: Analyzing trace with hash -545938624, now seen corresponding path program 1 times [2021-10-28 23:03:38,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:03:38,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [992334729] [2021-10-28 23:03:38,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:03:38,306 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:03:38,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:03:38,308 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:03:38,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-28 23:03:39,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:03:39,554 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:03:40,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:03:40,936 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-28 23:03:40,937 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:03:40,938 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:03:40,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-28 23:03:41,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:03:41,170 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-10-28 23:03:41,173 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:03:41,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:03:41 BoogieIcfgContainer [2021-10-28 23:03:41,405 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:03:41,406 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:03:41,406 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:03:41,406 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:03:41,407 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:03:10" (3/4) ... [2021-10-28 23:03:41,409 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 23:03:41,578 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:03:41,578 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:03:41,579 INFO L168 Benchmark]: Toolchain (without parser) took 37557.56 ms. Allocated memory was 54.5 MB in the beginning and 121.6 MB in the end (delta: 67.1 MB). Free memory was 29.7 MB in the beginning and 57.2 MB in the end (delta: -27.5 MB). Peak memory consumption was 42.0 MB. Max. memory is 16.1 GB. [2021-10-28 23:03:41,580 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 54.5 MB. Free memory is still 34.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:03:41,580 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1181.93 ms. Allocated memory was 54.5 MB in the beginning and 75.5 MB in the end (delta: 21.0 MB). Free memory was 29.4 MB in the beginning and 37.2 MB in the end (delta: -7.7 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2021-10-28 23:03:41,581 INFO L168 Benchmark]: Boogie Procedure Inliner took 170.63 ms. Allocated memory is still 75.5 MB. Free memory was 37.2 MB in the beginning and 52.3 MB in the end (delta: -15.1 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:03:41,581 INFO L168 Benchmark]: Boogie Preprocessor took 168.36 ms. Allocated memory is still 75.5 MB. Free memory was 52.3 MB in the beginning and 45.3 MB in the end (delta: 7.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:03:41,582 INFO L168 Benchmark]: RCFGBuilder took 5408.19 ms. Allocated memory was 75.5 MB in the beginning and 100.7 MB in the end (delta: 25.2 MB). Free memory was 44.9 MB in the beginning and 57.5 MB in the end (delta: -12.6 MB). Peak memory consumption was 21.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:03:41,583 INFO L168 Benchmark]: TraceAbstraction took 30442.29 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 57.5 MB in the beginning and 73.0 MB in the end (delta: -15.5 MB). Peak memory consumption was 52.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:03:41,583 INFO L168 Benchmark]: Witness Printer took 172.47 ms. Allocated memory is still 121.6 MB. Free memory was 71.9 MB in the beginning and 57.2 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-28 23:03:41,590 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 54.5 MB. Free memory is still 34.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1181.93 ms. Allocated memory was 54.5 MB in the beginning and 75.5 MB in the end (delta: 21.0 MB). Free memory was 29.4 MB in the beginning and 37.2 MB in the end (delta: -7.7 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 170.63 ms. Allocated memory is still 75.5 MB. Free memory was 37.2 MB in the beginning and 52.3 MB in the end (delta: -15.1 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 168.36 ms. Allocated memory is still 75.5 MB. Free memory was 52.3 MB in the beginning and 45.3 MB in the end (delta: 7.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * RCFGBuilder took 5408.19 ms. Allocated memory was 75.5 MB in the beginning and 100.7 MB in the end (delta: 25.2 MB). Free memory was 44.9 MB in the beginning and 57.5 MB in the end (delta: -12.6 MB). Peak memory consumption was 21.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 30442.29 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 57.5 MB in the beginning and 73.0 MB in the end (delta: -15.5 MB). Peak memory consumption was 52.3 MB. Max. memory is 16.1 GB. * Witness Printer took 172.47 ms. Allocated memory is still 121.6 MB. Free memory was 71.9 MB in the beginning and 57.2 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 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: 1737]: 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 = (BUF_MEM *)__VERIFIER_nondet_ulong(); [L1113] unsigned long l ; [L1114] unsigned long Time ; [L1115] unsigned long tmp = __VERIFIER_nondet_long() ; [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 ; [L1126] int tmp___4 ; [L1127] int tmp___5 ; [L1128] int tmp___6 ; [L1129] int tmp___7 ; [L1130] long tmp___8 = __VERIFIER_nondet_long() ; [L1131] int tmp___9 ; [L1132] int tmp___10 ; [L1133] int blastFlag ; [L1137] blastFlag = 0 [L1138] s->hit=__VERIFIER_nondet_int () [L1139] s->state = 8464 [L1140] Time = tmp [L1141] cb = (void (*)())((void *)0) [L1142] ret = -1 [L1143] skip = 0 [L1144] got_new_session = 0 [L1145] EXPR s->info_callback VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1145] COND TRUE (unsigned long )s->info_callback != (unsigned long )((void *)0) [L1146] EXPR s->info_callback [L1146] cb = s->info_callback [L1150] EXPR s->in_handshake [L1150] s->in_handshake += 1 [L1151] COND FALSE !(tmp___1 & 12288) VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1160] EXPR s->cert VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1160] COND FALSE !((unsigned long )s->cert == (unsigned long )((void *)0)) [L1166] COND TRUE 1 VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1168] EXPR s->state [L1168] state = s->state [L1169] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1169] COND FALSE !(s->state == 12292) [L1172] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1172] COND FALSE !(s->state == 16384) [L1175] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1175] COND FALSE !(s->state == 8192) [L1178] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1178] COND FALSE !(s->state == 24576) [L1181] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1181] COND FALSE !(s->state == 8195) [L1184] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1184] COND FALSE !(s->state == 8480) [L1187] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1187] COND FALSE !(s->state == 8481) [L1190] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1190] COND FALSE !(s->state == 8482) [L1193] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1193] COND TRUE s->state == 8464 [L1349] s->shutdown = 0 [L1350] ret = __VERIFIER_nondet_int() [L1351] COND TRUE blastFlag == 0 [L1352] blastFlag = 1 VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1356] COND FALSE !(ret <= 0) [L1361] got_new_session = 1 [L1362] s->state = 8496 [L1363] s->init_num = 0 VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1696] EXPR s->s3 [L1696] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1696] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1725] skip = 0 VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1166] COND TRUE 1 VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1168] EXPR s->state [L1168] state = s->state [L1169] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1169] COND FALSE !(s->state == 12292) [L1172] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1172] COND FALSE !(s->state == 16384) [L1175] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1175] COND FALSE !(s->state == 8192) [L1178] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1178] COND FALSE !(s->state == 24576) [L1181] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1181] COND FALSE !(s->state == 8195) [L1184] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1184] COND FALSE !(s->state == 8480) [L1187] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1187] COND FALSE !(s->state == 8481) [L1190] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1190] COND FALSE !(s->state == 8482) [L1193] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1193] COND FALSE !(s->state == 8464) [L1196] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1196] COND FALSE !(s->state == 8465) [L1199] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1199] COND FALSE !(s->state == 8466) [L1202] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1202] COND TRUE s->state == 8496 [L1367] ret = __VERIFIER_nondet_int() [L1368] COND TRUE blastFlag == 1 [L1369] blastFlag = 2 VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1373] COND FALSE !(ret <= 0) [L1378] s->hit VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1378] COND TRUE s->hit [L1379] s->state = 8656 VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1383] s->init_num = 0 VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1696] EXPR s->s3 [L1696] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1696] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1725] skip = 0 VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1166] COND TRUE 1 VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1168] EXPR s->state [L1168] state = s->state [L1169] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1169] COND FALSE !(s->state == 12292) [L1172] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1172] COND FALSE !(s->state == 16384) [L1175] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1175] COND FALSE !(s->state == 8192) [L1178] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1178] COND FALSE !(s->state == 24576) [L1181] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1181] COND FALSE !(s->state == 8195) [L1184] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1184] COND FALSE !(s->state == 8480) [L1187] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1187] COND FALSE !(s->state == 8481) [L1190] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1190] COND FALSE !(s->state == 8482) [L1193] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1193] COND FALSE !(s->state == 8464) [L1196] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1196] COND FALSE !(s->state == 8465) [L1199] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1199] COND FALSE !(s->state == 8466) [L1202] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1202] COND FALSE !(s->state == 8496) [L1205] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1205] COND FALSE !(s->state == 8497) [L1208] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1208] COND FALSE !(s->state == 8512) [L1211] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1211] COND FALSE !(s->state == 8513) [L1214] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1214] COND FALSE !(s->state == 8528) [L1217] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1217] COND FALSE !(s->state == 8529) [L1220] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1220] COND FALSE !(s->state == 8544) [L1223] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1223] COND FALSE !(s->state == 8545) [L1226] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1226] COND FALSE !(s->state == 8560) [L1229] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1229] COND FALSE !(s->state == 8561) [L1232] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1232] COND FALSE !(s->state == 8448) [L1235] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1235] COND FALSE !(s->state == 8576) [L1238] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1238] COND FALSE !(s->state == 8577) [L1241] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1241] COND FALSE !(s->state == 8592) [L1244] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1244] COND FALSE !(s->state == 8593) [L1247] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1247] COND FALSE !(s->state == 8608) [L1250] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1250] COND FALSE !(s->state == 8609) [L1253] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1253] COND FALSE !(s->state == 8640) [L1256] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1256] COND FALSE !(s->state == 8641) [L1259] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1259] COND TRUE s->state == 8656 [L1583] EXPR s->session [L1583] EXPR s->s3 [L1583] EXPR (s->s3)->tmp.new_cipher [L1583] (s->session)->cipher = (s->s3)->tmp.new_cipher [L1584] tmp___9 = __VERIFIER_nondet_int() [L1585] COND FALSE !(! tmp___9) [L1591] ret = __VERIFIER_nondet_int() [L1592] COND TRUE blastFlag == 2 [L1593] blastFlag = 5 VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1597] COND FALSE !(ret <= 0) [L1602] s->state = 8672 [L1603] s->init_num = 0 [L1604] tmp___10 = __VERIFIER_nondet_int() [L1605] COND FALSE !(! tmp___10) VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1696] EXPR s->s3 [L1696] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1696] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1725] skip = 0 VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1166] COND TRUE 1 VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1168] EXPR s->state [L1168] state = s->state [L1169] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1169] COND FALSE !(s->state == 12292) [L1172] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1172] COND FALSE !(s->state == 16384) [L1175] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1175] COND FALSE !(s->state == 8192) [L1178] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1178] COND FALSE !(s->state == 24576) [L1181] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1181] COND FALSE !(s->state == 8195) [L1184] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1184] COND FALSE !(s->state == 8480) [L1187] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1187] COND FALSE !(s->state == 8481) [L1190] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1190] COND FALSE !(s->state == 8482) [L1193] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1193] COND FALSE !(s->state == 8464) [L1196] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1196] COND FALSE !(s->state == 8465) [L1199] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1199] COND FALSE !(s->state == 8466) [L1202] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1202] COND FALSE !(s->state == 8496) [L1205] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1205] COND FALSE !(s->state == 8497) [L1208] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1208] COND FALSE !(s->state == 8512) [L1211] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1211] COND FALSE !(s->state == 8513) [L1214] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1214] COND FALSE !(s->state == 8528) [L1217] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1217] COND FALSE !(s->state == 8529) [L1220] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1220] COND FALSE !(s->state == 8544) [L1223] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1223] COND FALSE !(s->state == 8545) [L1226] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1226] COND FALSE !(s->state == 8560) [L1229] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1229] COND FALSE !(s->state == 8561) [L1232] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1232] COND FALSE !(s->state == 8448) [L1235] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1235] COND FALSE !(s->state == 8576) [L1238] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1238] COND FALSE !(s->state == 8577) [L1241] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1241] COND FALSE !(s->state == 8592) [L1244] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1244] COND FALSE !(s->state == 8593) [L1247] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1247] COND FALSE !(s->state == 8608) [L1250] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1250] COND FALSE !(s->state == 8609) [L1253] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1253] COND FALSE !(s->state == 8640) [L1256] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1256] COND FALSE !(s->state == 8641) [L1259] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1259] COND FALSE !(s->state == 8656) [L1262] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1262] COND FALSE !(s->state == 8657) [L1265] EXPR s->state VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1265] COND TRUE s->state == 8672 [L1614] ret = __VERIFIER_nondet_int() [L1615] COND FALSE !(blastFlag == 4) VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1618] COND TRUE blastFlag == 5 VAL [init=1, SSLv3_server_data={-1073741793:0}] [L1737] reach_error() VAL [init=1, SSLv3_server_data={-1073741793:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 147 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 30.1s, OverallIterations: 6, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 15.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1393 SDtfs, 1235 SDslu, 2054 SDs, 0 SdLazy, 542 SolverSat, 52 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 14.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 979 GetRequests, 959 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=713occurred in iteration=5, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 108 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 7.2s InterpolantComputationTime, 621 NumberOfCodeBlocks, 621 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 976 ConstructedInterpolants, 1 QuantifiedInterpolants, 2280 SizeOfPredicates, 15 NumberOfNonLiveVariables, 1387 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 636/636 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 23:03:41,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5789b0-e6e6-4a9c-8fd4-8fee9ab1238d/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...