./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/num_conversion_1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/num_conversion_1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt --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 22f8891fc10bb8c305de18eb9540699e7b8a01ce ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/num_conversion_1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt --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 22f8891fc10bb8c305de18eb9540699e7b8a01ce ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-12 23:59:05,262 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-12 23:59:05,265 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-12 23:59:05,320 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-12 23:59:05,321 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-12 23:59:05,326 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-12 23:59:05,328 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-12 23:59:05,332 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-12 23:59:05,334 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-12 23:59:05,340 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-12 23:59:05,341 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-12 23:59:05,343 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-12 23:59:05,344 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-12 23:59:05,346 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-12 23:59:05,349 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-12 23:59:05,353 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-12 23:59:05,355 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-12 23:59:05,356 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-12 23:59:05,358 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-12 23:59:05,366 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-12 23:59:05,368 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-12 23:59:05,369 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-12 23:59:05,373 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-12 23:59:05,374 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-12 23:59:05,383 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-12 23:59:05,383 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-12 23:59:05,384 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-12 23:59:05,386 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-12 23:59:05,387 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-12 23:59:05,388 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-12 23:59:05,388 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-12 23:59:05,389 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-12 23:59:05,391 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-12 23:59:05,393 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-12 23:59:05,394 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-12 23:59:05,395 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-12 23:59:05,396 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-12 23:59:05,396 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-12 23:59:05,396 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-12 23:59:05,397 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-12 23:59:05,398 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-12 23:59:05,399 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-12 23:59:05,445 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-12 23:59:05,445 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-12 23:59:05,446 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-12 23:59:05,446 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-12 23:59:05,453 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-12 23:59:05,453 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-12 23:59:05,454 INFO L138 SettingsManager]: * Use SBE=true [2021-10-12 23:59:05,454 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-12 23:59:05,454 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-12 23:59:05,455 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-12 23:59:05,456 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-12 23:59:05,456 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-12 23:59:05,456 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-12 23:59:05,456 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-12 23:59:05,457 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-12 23:59:05,457 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-12 23:59:05,457 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-12 23:59:05,457 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-12 23:59:05,458 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-12 23:59:05,458 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-12 23:59:05,458 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-12 23:59:05,458 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-12 23:59:05,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-12 23:59:05,459 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-12 23:59:05,459 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-12 23:59:05,460 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-12 23:59:05,460 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-12 23:59:05,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-12 23:59:05,460 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-12 23:59:05,462 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-12 23:59:05,462 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_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22f8891fc10bb8c305de18eb9540699e7b8a01ce [2021-10-12 23:59:05,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-12 23:59:05,756 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-12 23:59:05,758 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-12 23:59:05,760 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-12 23:59:05,760 INFO L275 PluginConnector]: CDTParser initialized [2021-10-12 23:59:05,761 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/bitvector/num_conversion_1.c [2021-10-12 23:59:05,824 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/data/b9ef28cec/de521a437f6443c78db24d8cb14715e0/FLAG4e68bb9de [2021-10-12 23:59:06,307 INFO L306 CDTParser]: Found 1 translation units. [2021-10-12 23:59:06,308 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/sv-benchmarks/c/bitvector/num_conversion_1.c [2021-10-12 23:59:06,320 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/data/b9ef28cec/de521a437f6443c78db24d8cb14715e0/FLAG4e68bb9de [2021-10-12 23:59:06,694 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/data/b9ef28cec/de521a437f6443c78db24d8cb14715e0 [2021-10-12 23:59:06,698 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-12 23:59:06,701 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-12 23:59:06,704 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-12 23:59:06,705 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-12 23:59:06,709 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-12 23:59:06,709 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:59:06" (1/1) ... [2021-10-12 23:59:06,711 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b319d7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:06, skipping insertion in model container [2021-10-12 23:59:06,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:59:06" (1/1) ... [2021-10-12 23:59:06,719 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-12 23:59:06,732 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-12 23:59:06,913 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_42a28ac6-bab5-4837-8bbc-756311e612dc/sv-benchmarks/c/bitvector/num_conversion_1.c[368,381] [2021-10-12 23:59:06,944 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-12 23:59:06,953 INFO L203 MainTranslator]: Completed pre-run [2021-10-12 23:59:06,967 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_42a28ac6-bab5-4837-8bbc-756311e612dc/sv-benchmarks/c/bitvector/num_conversion_1.c[368,381] [2021-10-12 23:59:06,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-12 23:59:06,990 INFO L208 MainTranslator]: Completed translation [2021-10-12 23:59:06,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:06 WrapperNode [2021-10-12 23:59:06,993 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-12 23:59:06,994 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-12 23:59:06,995 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-12 23:59:06,995 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-12 23:59:07,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:06" (1/1) ... [2021-10-12 23:59:07,010 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:06" (1/1) ... [2021-10-12 23:59:07,029 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-12 23:59:07,030 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-12 23:59:07,031 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-12 23:59:07,031 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-12 23:59:07,039 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:06" (1/1) ... [2021-10-12 23:59:07,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:06" (1/1) ... [2021-10-12 23:59:07,051 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:06" (1/1) ... [2021-10-12 23:59:07,052 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:06" (1/1) ... [2021-10-12 23:59:07,056 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:06" (1/1) ... [2021-10-12 23:59:07,062 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:06" (1/1) ... [2021-10-12 23:59:07,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:06" (1/1) ... [2021-10-12 23:59:07,072 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-12 23:59:07,077 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-12 23:59:07,077 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-12 23:59:07,078 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-12 23:59:07,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:06" (1/1) ... [2021-10-12 23:59:07,086 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-12 23:59:07,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-12 23:59:07,114 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-12 23:59:07,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-12 23:59:07,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-12 23:59:07,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-12 23:59:07,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-12 23:59:07,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-12 23:59:07,417 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-12 23:59:07,417 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-12 23:59:07,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:59:07 BoogieIcfgContainer [2021-10-12 23:59:07,419 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-12 23:59:07,421 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-12 23:59:07,421 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-12 23:59:07,443 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-12 23:59:07,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 11:59:06" (1/3) ... [2021-10-12 23:59:07,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@561db181 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:59:07, skipping insertion in model container [2021-10-12 23:59:07,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:06" (2/3) ... [2021-10-12 23:59:07,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@561db181 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:59:07, skipping insertion in model container [2021-10-12 23:59:07,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:59:07" (3/3) ... [2021-10-12 23:59:07,446 INFO L111 eAbstractionObserver]: Analyzing ICFG num_conversion_1.c [2021-10-12 23:59:07,452 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-12 23:59:07,452 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-12 23:59:07,536 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-12 23:59:07,553 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, mConcurrency=FINITE_AUTOMATA, 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 [2021-10-12 23:59:07,553 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-12 23:59:07,566 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:07,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-12 23:59:07,571 INFO L504 BasicCegarLoop]: Found error trace [2021-10-12 23:59:07,572 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-12 23:59:07,572 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-12 23:59:07,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-12 23:59:07,578 INFO L82 PathProgramCache]: Analyzing trace with hash 889968487, now seen corresponding path program 1 times [2021-10-12 23:59:07,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-12 23:59:07,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497900601] [2021-10-12 23:59:07,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-12 23:59:07,589 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-12 23:59:07,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-12 23:59:07,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-12 23:59:07,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-12 23:59:07,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497900601] [2021-10-12 23:59:07,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497900601] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-12 23:59:07,778 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-12 23:59:07,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-12 23:59:07,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484703161] [2021-10-12 23:59:07,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-12 23:59:07,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-12 23:59:07,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-12 23:59:07,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-12 23:59:07,815 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 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 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:07,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-12 23:59:07,828 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2021-10-12 23:59:07,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-12 23:59:07,829 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2021-10-12 23:59:07,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-12 23:59:07,837 INFO L225 Difference]: With dead ends: 21 [2021-10-12 23:59:07,837 INFO L226 Difference]: Without dead ends: 9 [2021-10-12 23:59:07,857 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-12 23:59:07,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-12 23:59:07,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-12 23:59:07,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:07,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2021-10-12 23:59:07,885 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2021-10-12 23:59:07,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-12 23:59:07,886 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-10-12 23:59:07,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:07,888 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2021-10-12 23:59:07,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-12 23:59:07,888 INFO L504 BasicCegarLoop]: Found error trace [2021-10-12 23:59:07,888 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-12 23:59:07,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-12 23:59:07,889 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-12 23:59:07,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-12 23:59:07,893 INFO L82 PathProgramCache]: Analyzing trace with hash 889640786, now seen corresponding path program 1 times [2021-10-12 23:59:07,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-12 23:59:07,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740133064] [2021-10-12 23:59:07,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-12 23:59:07,894 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-12 23:59:07,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-12 23:59:08,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-12 23:59:08,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-12 23:59:08,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740133064] [2021-10-12 23:59:08,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740133064] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-12 23:59:08,006 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-12 23:59:08,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-12 23:59:08,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311632995] [2021-10-12 23:59:08,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-12 23:59:08,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-12 23:59:08,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-12 23:59:08,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-12 23:59:08,010 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:08,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-12 23:59:08,034 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2021-10-12 23:59:08,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-12 23:59:08,035 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2021-10-12 23:59:08,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-12 23:59:08,036 INFO L225 Difference]: With dead ends: 16 [2021-10-12 23:59:08,036 INFO L226 Difference]: Without dead ends: 12 [2021-10-12 23:59:08,037 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-12 23:59:08,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-12 23:59:08,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2021-10-12 23:59:08,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:08,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2021-10-12 23:59:08,040 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2021-10-12 23:59:08,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-12 23:59:08,040 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-10-12 23:59:08,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:08,041 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2021-10-12 23:59:08,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-12 23:59:08,041 INFO L504 BasicCegarLoop]: Found error trace [2021-10-12 23:59:08,042 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-12 23:59:08,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-12 23:59:08,042 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-12 23:59:08,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-12 23:59:08,043 INFO L82 PathProgramCache]: Analyzing trace with hash 641725625, now seen corresponding path program 1 times [2021-10-12 23:59:08,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-12 23:59:08,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927300424] [2021-10-12 23:59:08,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-12 23:59:08,044 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-12 23:59:08,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-12 23:59:08,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-12 23:59:08,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-12 23:59:08,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927300424] [2021-10-12 23:59:08,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927300424] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-12 23:59:08,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356997688] [2021-10-12 23:59:08,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-12 23:59:08,169 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-12 23:59:08,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-12 23:59:08,176 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-12 23:59:08,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-12 23:59:08,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-12 23:59:08,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-12 23:59:08,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-12 23:59:08,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-12 23:59:08,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356997688] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-12 23:59:08,338 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-12 23:59:08,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-10-12 23:59:08,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393934918] [2021-10-12 23:59:08,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-12 23:59:08,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-12 23:59:08,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-12 23:59:08,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-12 23:59:08,353 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:08,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-12 23:59:08,385 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2021-10-12 23:59:08,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-12 23:59:08,385 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 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 9 [2021-10-12 23:59:08,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-12 23:59:08,386 INFO L225 Difference]: With dead ends: 19 [2021-10-12 23:59:08,386 INFO L226 Difference]: Without dead ends: 15 [2021-10-12 23:59:08,387 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 18.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-12 23:59:08,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-12 23:59:08,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2021-10-12 23:59:08,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:08,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2021-10-12 23:59:08,391 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 9 [2021-10-12 23:59:08,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-12 23:59:08,391 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-10-12 23:59:08,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:08,392 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2021-10-12 23:59:08,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-12 23:59:08,393 INFO L504 BasicCegarLoop]: Found error trace [2021-10-12 23:59:08,393 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-12 23:59:08,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:08,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-12 23:59:08,594 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-12 23:59:08,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-12 23:59:08,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1950053902, now seen corresponding path program 2 times [2021-10-12 23:59:08,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-12 23:59:08,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496140225] [2021-10-12 23:59:08,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-12 23:59:08,596 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-12 23:59:08,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-12 23:59:08,683 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-12 23:59:08,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-12 23:59:08,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496140225] [2021-10-12 23:59:08,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496140225] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-12 23:59:08,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780325546] [2021-10-12 23:59:08,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-12 23:59:08,685 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-12 23:59:08,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-12 23:59:08,686 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-12 23:59:08,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-12 23:59:08,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-12 23:59:08,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-12 23:59:08,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-12 23:59:08,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-12 23:59:08,857 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-12 23:59:08,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780325546] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-12 23:59:08,857 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-12 23:59:08,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-10-12 23:59:08,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938420421] [2021-10-12 23:59:08,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-12 23:59:08,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-12 23:59:08,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-12 23:59:08,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-12 23:59:08,860 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:08,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-12 23:59:08,890 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2021-10-12 23:59:08,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-12 23:59:08,890 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 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 12 [2021-10-12 23:59:08,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-12 23:59:08,891 INFO L225 Difference]: With dead ends: 22 [2021-10-12 23:59:08,891 INFO L226 Difference]: Without dead ends: 18 [2021-10-12 23:59:08,892 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 24.0ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-12 23:59:08,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-12 23:59:08,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2021-10-12 23:59:08,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:08,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2021-10-12 23:59:08,896 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 12 [2021-10-12 23:59:08,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-12 23:59:08,896 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2021-10-12 23:59:08,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:08,897 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2021-10-12 23:59:08,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-12 23:59:08,897 INFO L504 BasicCegarLoop]: Found error trace [2021-10-12 23:59:08,897 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2021-10-12 23:59:08,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:09,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-12 23:59:09,129 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-12 23:59:09,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-12 23:59:09,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1268104729, now seen corresponding path program 3 times [2021-10-12 23:59:09,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-12 23:59:09,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39908734] [2021-10-12 23:59:09,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-12 23:59:09,130 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-12 23:59:09,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-12 23:59:09,246 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-12 23:59:09,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-12 23:59:09,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39908734] [2021-10-12 23:59:09,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39908734] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-12 23:59:09,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240133259] [2021-10-12 23:59:09,249 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-12 23:59:09,250 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-12 23:59:09,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-12 23:59:09,256 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-12 23:59:09,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-12 23:59:09,333 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-12 23:59:09,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-12 23:59:09,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-12 23:59:09,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-12 23:59:09,491 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-12 23:59:09,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240133259] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-12 23:59:09,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-12 23:59:09,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-12 23:59:09,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540522213] [2021-10-12 23:59:09,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-12 23:59:09,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-12 23:59:09,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-12 23:59:09,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-12 23:59:09,495 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:09,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-12 23:59:09,625 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2021-10-12 23:59:09,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-12 23:59:09,626 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 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 15 [2021-10-12 23:59:09,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-12 23:59:09,629 INFO L225 Difference]: With dead ends: 35 [2021-10-12 23:59:09,630 INFO L226 Difference]: Without dead ends: 31 [2021-10-12 23:59:09,634 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 69.1ms TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-12 23:59:09,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-10-12 23:59:09,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 19. [2021-10-12 23:59:09,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:09,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2021-10-12 23:59:09,641 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 15 [2021-10-12 23:59:09,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-12 23:59:09,642 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2021-10-12 23:59:09,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:09,642 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2021-10-12 23:59:09,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-12 23:59:09,643 INFO L504 BasicCegarLoop]: Found error trace [2021-10-12 23:59:09,643 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1] [2021-10-12 23:59:09,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:09,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-12 23:59:09,861 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-12 23:59:09,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-12 23:59:09,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1171899538, now seen corresponding path program 4 times [2021-10-12 23:59:09,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-12 23:59:09,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466754344] [2021-10-12 23:59:09,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-12 23:59:09,862 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-12 23:59:09,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-12 23:59:09,985 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-12 23:59:09,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-12 23:59:09,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466754344] [2021-10-12 23:59:09,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466754344] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-12 23:59:09,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432802069] [2021-10-12 23:59:09,987 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-12 23:59:09,987 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-12 23:59:09,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-12 23:59:09,992 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-12 23:59:09,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-12 23:59:10,067 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-12 23:59:10,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-12 23:59:10,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-12 23:59:10,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-12 23:59:10,215 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-12 23:59:10,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432802069] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-12 23:59:10,216 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-12 23:59:10,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-10-12 23:59:10,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27296142] [2021-10-12 23:59:10,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-12 23:59:10,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-12 23:59:10,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-12 23:59:10,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-12 23:59:10,219 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:10,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-12 23:59:10,292 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2021-10-12 23:59:10,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-12 23:59:10,292 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 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 18 [2021-10-12 23:59:10,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-12 23:59:10,293 INFO L225 Difference]: With dead ends: 28 [2021-10-12 23:59:10,293 INFO L226 Difference]: Without dead ends: 24 [2021-10-12 23:59:10,294 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 63.4ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-12 23:59:10,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-12 23:59:10,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2021-10-12 23:59:10,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:10,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2021-10-12 23:59:10,305 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 18 [2021-10-12 23:59:10,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-12 23:59:10,306 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2021-10-12 23:59:10,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:10,307 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2021-10-12 23:59:10,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-12 23:59:10,309 INFO L504 BasicCegarLoop]: Found error trace [2021-10-12 23:59:10,310 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1] [2021-10-12 23:59:10,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:10,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-12 23:59:10,512 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-12 23:59:10,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-12 23:59:10,513 INFO L82 PathProgramCache]: Analyzing trace with hash -133759111, now seen corresponding path program 5 times [2021-10-12 23:59:10,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-12 23:59:10,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738642310] [2021-10-12 23:59:10,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-12 23:59:10,514 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-12 23:59:10,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-12 23:59:10,644 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-12 23:59:10,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-12 23:59:10,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738642310] [2021-10-12 23:59:10,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738642310] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-12 23:59:10,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108583524] [2021-10-12 23:59:10,645 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-12 23:59:10,645 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-12 23:59:10,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-12 23:59:10,646 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-12 23:59:10,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-12 23:59:10,735 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-12 23:59:10,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-12 23:59:10,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-12 23:59:10,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-12 23:59:10,879 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-12 23:59:10,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108583524] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-12 23:59:10,879 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-12 23:59:10,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-12 23:59:10,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238491834] [2021-10-12 23:59:10,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-12 23:59:10,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-12 23:59:10,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-12 23:59:10,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-10-12 23:59:10,881 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:10,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-12 23:59:10,987 INFO L93 Difference]: Finished difference Result 31 states and 38 transitions. [2021-10-12 23:59:10,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-12 23:59:10,989 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 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 21 [2021-10-12 23:59:10,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-12 23:59:10,989 INFO L225 Difference]: With dead ends: 31 [2021-10-12 23:59:10,989 INFO L226 Difference]: Without dead ends: 27 [2021-10-12 23:59:10,990 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 79.4ms TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-10-12 23:59:10,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-12 23:59:10,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2021-10-12 23:59:10,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:10,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2021-10-12 23:59:10,995 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 21 [2021-10-12 23:59:10,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-12 23:59:10,995 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2021-10-12 23:59:10,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:10,995 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2021-10-12 23:59:10,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-12 23:59:10,996 INFO L504 BasicCegarLoop]: Found error trace [2021-10-12 23:59:10,996 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1] [2021-10-12 23:59:11,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:11,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-10-12 23:59:11,197 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-12 23:59:11,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-12 23:59:11,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1786738894, now seen corresponding path program 6 times [2021-10-12 23:59:11,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-12 23:59:11,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292945401] [2021-10-12 23:59:11,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-12 23:59:11,198 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-12 23:59:11,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-12 23:59:11,333 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-12 23:59:11,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-12 23:59:11,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292945401] [2021-10-12 23:59:11,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292945401] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-12 23:59:11,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73563710] [2021-10-12 23:59:11,343 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-12 23:59:11,343 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-12 23:59:11,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-12 23:59:11,348 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-12 23:59:11,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-12 23:59:11,456 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-12 23:59:11,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-12 23:59:11,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-12 23:59:11,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-12 23:59:11,607 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-12 23:59:11,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73563710] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-12 23:59:11,608 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-12 23:59:11,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-10-12 23:59:11,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213728205] [2021-10-12 23:59:11,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-12 23:59:11,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-12 23:59:11,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-12 23:59:11,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-10-12 23:59:11,610 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:11,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-12 23:59:11,707 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2021-10-12 23:59:11,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-12 23:59:11,708 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 0 states have call successors, (0), 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 24 [2021-10-12 23:59:11,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-12 23:59:11,709 INFO L225 Difference]: With dead ends: 34 [2021-10-12 23:59:11,709 INFO L226 Difference]: Without dead ends: 30 [2021-10-12 23:59:11,709 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 105.0ms TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-10-12 23:59:11,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-12 23:59:11,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2021-10-12 23:59:11,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:11,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2021-10-12 23:59:11,713 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 24 [2021-10-12 23:59:11,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-12 23:59:11,714 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2021-10-12 23:59:11,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 15 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:11,714 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2021-10-12 23:59:11,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-12 23:59:11,715 INFO L504 BasicCegarLoop]: Found error trace [2021-10-12 23:59:11,715 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1] [2021-10-12 23:59:11,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:11,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-10-12 23:59:11,941 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-12 23:59:11,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-12 23:59:11,941 INFO L82 PathProgramCache]: Analyzing trace with hash 387561689, now seen corresponding path program 7 times [2021-10-12 23:59:11,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-12 23:59:11,941 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367063667] [2021-10-12 23:59:11,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-12 23:59:11,941 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-12 23:59:11,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-12 23:59:12,096 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-12 23:59:12,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-12 23:59:12,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367063667] [2021-10-12 23:59:12,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367063667] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-12 23:59:12,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983874138] [2021-10-12 23:59:12,097 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-12 23:59:12,097 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-12 23:59:12,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-12 23:59:12,101 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-12 23:59:12,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-12 23:59:12,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-12 23:59:12,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-12 23:59:12,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-12 23:59:12,387 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-12 23:59:12,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983874138] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-12 23:59:12,387 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-12 23:59:12,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-10-12 23:59:12,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133481881] [2021-10-12 23:59:12,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-12 23:59:12,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-12 23:59:12,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-12 23:59:12,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2021-10-12 23:59:12,389 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 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) [2021-10-12 23:59:12,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-12 23:59:12,516 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2021-10-12 23:59:12,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-12 23:59:12,520 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 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 27 [2021-10-12 23:59:12,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-12 23:59:12,521 INFO L225 Difference]: With dead ends: 37 [2021-10-12 23:59:12,521 INFO L226 Difference]: Without dead ends: 33 [2021-10-12 23:59:12,521 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 137.0ms TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2021-10-12 23:59:12,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-12 23:59:12,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2021-10-12 23:59:12,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.3) internal successors, (39), 30 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:12,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2021-10-12 23:59:12,526 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 27 [2021-10-12 23:59:12,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-12 23:59:12,526 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2021-10-12 23:59:12,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 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) [2021-10-12 23:59:12,526 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2021-10-12 23:59:12,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-12 23:59:12,527 INFO L504 BasicCegarLoop]: Found error trace [2021-10-12 23:59:12,527 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1] [2021-10-12 23:59:12,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:12,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-12 23:59:12,728 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-12 23:59:12,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-12 23:59:12,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1720528430, now seen corresponding path program 8 times [2021-10-12 23:59:12,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-12 23:59:12,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263250296] [2021-10-12 23:59:12,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-12 23:59:12,729 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-12 23:59:12,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-12 23:59:12,748 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-12 23:59:12,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-12 23:59:12,782 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-12 23:59:12,782 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-12 23:59:12,783 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-12 23:59:12,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-12 23:59:12,790 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-12 23:59:12,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 11:59:12 BoogieIcfgContainer [2021-10-12 23:59:12,826 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-12 23:59:12,827 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-12 23:59:12,827 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-12 23:59:12,827 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-12 23:59:12,827 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:59:07" (3/4) ... [2021-10-12 23:59:12,831 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-12 23:59:12,831 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-12 23:59:12,832 INFO L168 Benchmark]: Toolchain (without parser) took 6130.60 ms. Allocated memory was 96.5 MB in the beginning and 119.5 MB in the end (delta: 23.1 MB). Free memory was 65.0 MB in the beginning and 84.7 MB in the end (delta: -19.7 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. [2021-10-12 23:59:12,833 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 96.5 MB. Free memory is still 53.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-12 23:59:12,833 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.02 ms. Allocated memory is still 96.5 MB. Free memory was 64.8 MB in the beginning and 71.7 MB in the end (delta: -6.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-12 23:59:12,833 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.97 ms. Allocated memory is still 96.5 MB. Free memory was 71.7 MB in the beginning and 70.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-12 23:59:12,834 INFO L168 Benchmark]: Boogie Preprocessor took 45.84 ms. Allocated memory is still 96.5 MB. Free memory was 70.1 MB in the beginning and 69.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-12 23:59:12,834 INFO L168 Benchmark]: RCFGBuilder took 342.23 ms. Allocated memory is still 96.5 MB. Free memory was 69.1 MB in the beginning and 60.4 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-12 23:59:12,835 INFO L168 Benchmark]: TraceAbstraction took 5405.41 ms. Allocated memory was 96.5 MB in the beginning and 119.5 MB in the end (delta: 23.1 MB). Free memory was 59.8 MB in the beginning and 84.7 MB in the end (delta: -25.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-12 23:59:12,835 INFO L168 Benchmark]: Witness Printer took 4.33 ms. Allocated memory is still 119.5 MB. Free memory was 84.7 MB in the beginning and 84.7 MB in the end (delta: 2.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-12 23:59:12,837 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 96.5 MB. Free memory is still 53.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 289.02 ms. Allocated memory is still 96.5 MB. Free memory was 64.8 MB in the beginning and 71.7 MB in the end (delta: -6.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.97 ms. Allocated memory is still 96.5 MB. Free memory was 71.7 MB in the beginning and 70.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.84 ms. Allocated memory is still 96.5 MB. Free memory was 70.1 MB in the beginning and 69.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 342.23 ms. Allocated memory is still 96.5 MB. Free memory was 69.1 MB in the beginning and 60.4 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5405.41 ms. Allocated memory was 96.5 MB in the beginning and 119.5 MB in the end (delta: 23.1 MB). Free memory was 59.8 MB in the beginning and 84.7 MB in the end (delta: -25.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.33 ms. Allocated memory is still 119.5 MB. Free memory was 84.7 MB in the beginning and 84.7 MB in the end (delta: 2.6 kB). 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 8]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of shiftLeft at line 24, overapproximation of bitwiseAnd at line 25. Possible FailurePath: [L16] unsigned char x; [L17] unsigned char y; [L18] unsigned char c; [L20] x = 37 [L21] y = 0 [L22] c = 0 [L23] COND TRUE c < (unsigned char)8 [L24] unsigned char i = ((unsigned char)1) << c; [L25] unsigned char bit = x & i; [L26] COND FALSE !(bit != (unsigned char)0) [L29] c = c + ((unsigned char)1) [L23] COND TRUE c < (unsigned char)8 [L24] unsigned char i = ((unsigned char)1) << c; [L25] unsigned char bit = x & i; [L26] COND FALSE !(bit != (unsigned char)0) [L29] c = c + ((unsigned char)1) [L23] COND TRUE c < (unsigned char)8 [L24] unsigned char i = ((unsigned char)1) << c; [L25] unsigned char bit = x & i; [L26] COND FALSE !(bit != (unsigned char)0) [L29] c = c + ((unsigned char)1) [L23] COND TRUE c < (unsigned char)8 [L24] unsigned char i = ((unsigned char)1) << c; [L25] unsigned char bit = x & i; [L26] COND FALSE !(bit != (unsigned char)0) [L29] c = c + ((unsigned char)1) [L23] COND TRUE c < (unsigned char)8 [L24] unsigned char i = ((unsigned char)1) << c; [L25] unsigned char bit = x & i; [L26] COND FALSE !(bit != (unsigned char)0) [L29] c = c + ((unsigned char)1) [L23] COND TRUE c < (unsigned char)8 [L24] unsigned char i = ((unsigned char)1) << c; [L25] unsigned char bit = x & i; [L26] COND FALSE !(bit != (unsigned char)0) [L29] c = c + ((unsigned char)1) [L23] COND TRUE c < (unsigned char)8 [L24] unsigned char i = ((unsigned char)1) << c; [L25] unsigned char bit = x & i; [L26] COND FALSE !(bit != (unsigned char)0) [L29] c = c + ((unsigned char)1) [L23] COND TRUE c < (unsigned char)8 [L24] unsigned char i = ((unsigned char)1) << c; [L25] unsigned char bit = x & i; [L26] COND FALSE !(bit != (unsigned char)0) [L29] c = c + ((unsigned char)1) [L23] COND FALSE !(c < (unsigned char)8) [L7] COND TRUE !(cond) [L8] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5254.8ms, OverallIterations: 10, TraceHistogramMax: 8, EmptinessCheckTime: 16.0ms, AutomataDifference: 721.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 130 SDtfs, 132 SDslu, 623 SDs, 0 SdLazy, 645 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 401.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 173 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 505.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=9, InterpolantAutomatonStates: 59, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 53.9ms AutomataMinimizationTime, 9 MinimizatonAttempts, 26 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 84.0ms SsaConstructionTime, 421.3ms SatisfiabilityAnalysisTime, 1804.1ms InterpolantComputationTime, 294 NumberOfCodeBlocks, 294 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 248 ConstructedInterpolants, 0 QuantifiedInterpolants, 1326 SizeOfPredicates, 9 NumberOfNonLiveVariables, 455 ConjunctsInSsa, 108 ConjunctsInUnsatCore, 16 InterpolantComputations, 2 PerfectInterpolantSequences, 0/392 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 [2021-10-12 23:59:12,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/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-4e77c04 [2021-10-12 23:59:15,317 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-12 23:59:15,320 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-12 23:59:15,388 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-12 23:59:15,454 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-12 23:59:15,455 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-12 23:59:15,457 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-12 23:59:15,458 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-12 23:59:15,460 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-12 23:59:15,460 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-12 23:59:15,461 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-12 23:59:15,462 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-12 23:59:15,462 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-12 23:59:15,464 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-12 23:59:15,465 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-12 23:59:15,470 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-12 23:59:15,517 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-12 23:59:15,517 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-12 23:59:15,518 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-12 23:59:15,518 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-12 23:59:15,520 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-12 23:59:15,521 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-12 23:59:15,521 INFO L138 SettingsManager]: * Use SBE=true [2021-10-12 23:59:15,521 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-12 23:59:15,522 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-12 23:59:15,522 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-12 23:59:15,523 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-12 23:59:15,523 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-12 23:59:15,523 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-12 23:59:15,524 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-12 23:59:15,524 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-12 23:59:15,524 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-12 23:59:15,524 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-12 23:59:15,525 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-12 23:59:15,525 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-12 23:59:15,525 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-12 23:59:15,525 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-12 23:59:15,526 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-12 23:59:15,526 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-12 23:59:15,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-12 23:59:15,526 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-12 23:59:15,527 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-12 23:59:15,527 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-12 23:59:15,527 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-12 23:59:15,527 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-12 23:59:15,528 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-12 23:59:15,528 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-12 23:59:15,528 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-12 23:59:15,529 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_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22f8891fc10bb8c305de18eb9540699e7b8a01ce [2021-10-12 23:59:15,958 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-12 23:59:15,985 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-12 23:59:15,989 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-12 23:59:15,991 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-12 23:59:15,991 INFO L275 PluginConnector]: CDTParser initialized [2021-10-12 23:59:15,994 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/bitvector/num_conversion_1.c [2021-10-12 23:59:16,087 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/data/e49faf617/efeab9a773874b37941faea018921123/FLAGfbf2d819b [2021-10-12 23:59:16,658 INFO L306 CDTParser]: Found 1 translation units. [2021-10-12 23:59:16,658 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/sv-benchmarks/c/bitvector/num_conversion_1.c [2021-10-12 23:59:16,665 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/data/e49faf617/efeab9a773874b37941faea018921123/FLAGfbf2d819b [2021-10-12 23:59:17,094 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/data/e49faf617/efeab9a773874b37941faea018921123 [2021-10-12 23:59:17,097 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-12 23:59:17,098 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-12 23:59:17,100 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-12 23:59:17,100 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-12 23:59:17,104 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-12 23:59:17,105 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:59:17" (1/1) ... [2021-10-12 23:59:17,106 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30804efc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:17, skipping insertion in model container [2021-10-12 23:59:17,106 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:59:17" (1/1) ... [2021-10-12 23:59:17,113 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-12 23:59:17,127 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-12 23:59:17,262 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_42a28ac6-bab5-4837-8bbc-756311e612dc/sv-benchmarks/c/bitvector/num_conversion_1.c[368,381] [2021-10-12 23:59:17,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-12 23:59:17,289 INFO L203 MainTranslator]: Completed pre-run [2021-10-12 23:59:17,304 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_42a28ac6-bab5-4837-8bbc-756311e612dc/sv-benchmarks/c/bitvector/num_conversion_1.c[368,381] [2021-10-12 23:59:17,309 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-12 23:59:17,329 INFO L208 MainTranslator]: Completed translation [2021-10-12 23:59:17,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:17 WrapperNode [2021-10-12 23:59:17,330 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-12 23:59:17,331 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-12 23:59:17,331 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-12 23:59:17,331 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-12 23:59:17,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:17" (1/1) ... [2021-10-12 23:59:17,348 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:17" (1/1) ... [2021-10-12 23:59:17,398 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-12 23:59:17,399 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-12 23:59:17,400 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-12 23:59:17,400 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-12 23:59:17,413 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:17" (1/1) ... [2021-10-12 23:59:17,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:17" (1/1) ... [2021-10-12 23:59:17,426 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:17" (1/1) ... [2021-10-12 23:59:17,427 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:17" (1/1) ... [2021-10-12 23:59:17,432 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:17" (1/1) ... [2021-10-12 23:59:17,444 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:17" (1/1) ... [2021-10-12 23:59:17,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:17" (1/1) ... [2021-10-12 23:59:17,452 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-12 23:59:17,453 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-12 23:59:17,454 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-12 23:59:17,454 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-12 23:59:17,455 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:17" (1/1) ... [2021-10-12 23:59:17,464 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-12 23:59:17,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-12 23:59:17,491 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-12 23:59:17,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-12 23:59:17,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-12 23:59:17,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-12 23:59:17,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-12 23:59:17,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-12 23:59:17,866 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-12 23:59:17,867 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-12 23:59:17,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:59:17 BoogieIcfgContainer [2021-10-12 23:59:17,869 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-12 23:59:17,871 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-12 23:59:17,871 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-12 23:59:17,874 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-12 23:59:17,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 11:59:17" (1/3) ... [2021-10-12 23:59:17,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b88df46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:59:17, skipping insertion in model container [2021-10-12 23:59:17,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:17" (2/3) ... [2021-10-12 23:59:17,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b88df46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:59:17, skipping insertion in model container [2021-10-12 23:59:17,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:59:17" (3/3) ... [2021-10-12 23:59:17,879 INFO L111 eAbstractionObserver]: Analyzing ICFG num_conversion_1.c [2021-10-12 23:59:17,885 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-12 23:59:17,885 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-12 23:59:17,953 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-12 23:59:17,965 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, mConcurrency=FINITE_AUTOMATA, 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 [2021-10-12 23:59:17,965 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-12 23:59:17,983 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:17,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-12 23:59:18,000 INFO L504 BasicCegarLoop]: Found error trace [2021-10-12 23:59:18,000 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-12 23:59:18,001 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-12 23:59:18,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-12 23:59:18,007 INFO L82 PathProgramCache]: Analyzing trace with hash 889968487, now seen corresponding path program 1 times [2021-10-12 23:59:18,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-12 23:59:18,031 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1678240168] [2021-10-12 23:59:18,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-12 23:59:18,032 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-12 23:59:18,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-12 23:59:18,039 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-12 23:59:18,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-12 23:59:18,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-12 23:59:18,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-12 23:59:18,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-12 23:59:18,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-12 23:59:18,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-12 23:59:18,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-12 23:59:18,316 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-12 23:59:18,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1678240168] [2021-10-12 23:59:18,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1678240168] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-12 23:59:18,318 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-12 23:59:18,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-12 23:59:18,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067702942] [2021-10-12 23:59:18,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-12 23:59:18,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-12 23:59:18,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-12 23:59:18,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-12 23:59:18,342 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 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 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:18,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-12 23:59:18,356 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2021-10-12 23:59:18,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-12 23:59:18,357 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2021-10-12 23:59:18,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-12 23:59:18,365 INFO L225 Difference]: With dead ends: 21 [2021-10-12 23:59:18,365 INFO L226 Difference]: Without dead ends: 9 [2021-10-12 23:59:18,368 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-12 23:59:18,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-12 23:59:18,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-12 23:59:18,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:18,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2021-10-12 23:59:18,401 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2021-10-12 23:59:18,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-12 23:59:18,402 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-10-12 23:59:18,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:18,402 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2021-10-12 23:59:18,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-12 23:59:18,402 INFO L504 BasicCegarLoop]: Found error trace [2021-10-12 23:59:18,402 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-12 23:59:18,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:18,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-12 23:59:18,603 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-12 23:59:18,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-12 23:59:18,604 INFO L82 PathProgramCache]: Analyzing trace with hash 889640786, now seen corresponding path program 1 times [2021-10-12 23:59:18,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-12 23:59:18,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [233442127] [2021-10-12 23:59:18,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-12 23:59:18,606 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-12 23:59:18,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-12 23:59:18,607 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-12 23:59:18,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-12 23:59:18,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-12 23:59:18,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-12 23:59:18,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-12 23:59:18,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-12 23:59:18,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-12 23:59:18,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-12 23:59:18,727 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-12 23:59:18,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [233442127] [2021-10-12 23:59:18,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [233442127] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-12 23:59:18,728 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-12 23:59:18,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-12 23:59:18,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954248197] [2021-10-12 23:59:18,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-12 23:59:18,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-12 23:59:18,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-12 23:59:18,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-12 23:59:18,732 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:18,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-12 23:59:18,751 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2021-10-12 23:59:18,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-12 23:59:18,751 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 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 6 [2021-10-12 23:59:18,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-12 23:59:18,752 INFO L225 Difference]: With dead ends: 17 [2021-10-12 23:59:18,752 INFO L226 Difference]: Without dead ends: 13 [2021-10-12 23:59:18,753 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-12 23:59:18,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-12 23:59:18,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-12 23:59:18,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:18,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2021-10-12 23:59:18,757 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 6 [2021-10-12 23:59:18,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-12 23:59:18,758 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-10-12 23:59:18,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:18,758 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2021-10-12 23:59:18,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-12 23:59:18,759 INFO L504 BasicCegarLoop]: Found error trace [2021-10-12 23:59:18,759 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-12 23:59:18,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:18,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-12 23:59:18,970 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-12 23:59:18,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-12 23:59:18,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1950053902, now seen corresponding path program 1 times [2021-10-12 23:59:18,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-12 23:59:18,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1915472938] [2021-10-12 23:59:18,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-12 23:59:18,972 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-12 23:59:18,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-12 23:59:18,973 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-12 23:59:19,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-12 23:59:19,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-12 23:59:19,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-12 23:59:19,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-12 23:59:19,110 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-12 23:59:19,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-12 23:59:19,190 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-12 23:59:19,191 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-12 23:59:19,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1915472938] [2021-10-12 23:59:19,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1915472938] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-12 23:59:19,192 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-12 23:59:19,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-12 23:59:19,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408883806] [2021-10-12 23:59:19,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-12 23:59:19,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-12 23:59:19,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-12 23:59:19,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-12 23:59:19,200 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:19,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-12 23:59:19,258 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2021-10-12 23:59:19,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-12 23:59:19,259 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 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 12 [2021-10-12 23:59:19,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-12 23:59:19,260 INFO L225 Difference]: With dead ends: 28 [2021-10-12 23:59:19,260 INFO L226 Difference]: Without dead ends: 19 [2021-10-12 23:59:19,261 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 55.1ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-12 23:59:19,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-12 23:59:19,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 13. [2021-10-12 23:59:19,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:19,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-10-12 23:59:19,281 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 12 [2021-10-12 23:59:19,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-12 23:59:19,282 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-10-12 23:59:19,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:19,282 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2021-10-12 23:59:19,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-12 23:59:19,283 INFO L504 BasicCegarLoop]: Found error trace [2021-10-12 23:59:19,283 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-12 23:59:19,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:19,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-12 23:59:19,484 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-12 23:59:19,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-12 23:59:19,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1664855024, now seen corresponding path program 1 times [2021-10-12 23:59:19,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-12 23:59:19,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [520264275] [2021-10-12 23:59:19,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-12 23:59:19,486 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-12 23:59:19,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-12 23:59:19,491 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-12 23:59:19,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-12 23:59:19,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-12 23:59:19,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-12 23:59:19,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-12 23:59:19,614 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-12 23:59:19,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-12 23:59:19,689 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-12 23:59:19,690 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-12 23:59:19,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [520264275] [2021-10-12 23:59:19,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [520264275] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-12 23:59:19,691 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-12 23:59:19,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-10-12 23:59:19,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978812629] [2021-10-12 23:59:19,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-12 23:59:19,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-12 23:59:19,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-12 23:59:19,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-12 23:59:19,694 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:19,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-12 23:59:19,784 INFO L93 Difference]: Finished difference Result 29 states and 37 transitions. [2021-10-12 23:59:19,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-12 23:59:19,785 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 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 12 [2021-10-12 23:59:19,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-12 23:59:19,788 INFO L225 Difference]: With dead ends: 29 [2021-10-12 23:59:19,788 INFO L226 Difference]: Without dead ends: 25 [2021-10-12 23:59:19,790 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 67.1ms TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-10-12 23:59:19,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-12 23:59:19,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-10-12 23:59:19,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:19,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2021-10-12 23:59:19,807 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 12 [2021-10-12 23:59:19,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-12 23:59:19,808 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2021-10-12 23:59:19,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:19,808 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2021-10-12 23:59:19,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-12 23:59:19,811 INFO L504 BasicCegarLoop]: Found error trace [2021-10-12 23:59:19,811 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1] [2021-10-12 23:59:19,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:20,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-12 23:59:20,023 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-12 23:59:20,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-12 23:59:20,027 INFO L82 PathProgramCache]: Analyzing trace with hash 2085526576, now seen corresponding path program 2 times [2021-10-12 23:59:20,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-12 23:59:20,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [410345095] [2021-10-12 23:59:20,028 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-12 23:59:20,028 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-12 23:59:20,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-12 23:59:20,029 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-12 23:59:20,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-12 23:59:20,114 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-12 23:59:20,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-12 23:59:20,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-12 23:59:20,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-12 23:59:20,338 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 29 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-12 23:59:20,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-12 23:59:20,512 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 29 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-12 23:59:20,512 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-12 23:59:20,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [410345095] [2021-10-12 23:59:20,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [410345095] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-12 23:59:20,513 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-12 23:59:20,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-12 23:59:20,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129982713] [2021-10-12 23:59:20,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-12 23:59:20,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-12 23:59:20,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-12 23:59:20,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-12 23:59:20,522 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:20,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-12 23:59:20,769 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2021-10-12 23:59:20,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-12 23:59:20,770 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 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 24 [2021-10-12 23:59:20,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-12 23:59:20,771 INFO L225 Difference]: With dead ends: 54 [2021-10-12 23:59:20,771 INFO L226 Difference]: Without dead ends: 39 [2021-10-12 23:59:20,772 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 207.9ms TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-10-12 23:59:20,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-12 23:59:20,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 26. [2021-10-12 23:59:20,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:20,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2021-10-12 23:59:20,777 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 24 [2021-10-12 23:59:20,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-12 23:59:20,778 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2021-10-12 23:59:20,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:20,778 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2021-10-12 23:59:20,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-12 23:59:20,779 INFO L504 BasicCegarLoop]: Found error trace [2021-10-12 23:59:20,779 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 1, 1, 1, 1, 1, 1] [2021-10-12 23:59:20,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:20,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-12 23:59:20,991 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-12 23:59:20,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-12 23:59:20,991 INFO L82 PathProgramCache]: Analyzing trace with hash -986835344, now seen corresponding path program 3 times [2021-10-12 23:59:20,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-12 23:59:20,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [21353550] [2021-10-12 23:59:20,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-12 23:59:20,992 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-12 23:59:20,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-12 23:59:20,993 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-12 23:59:20,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-12 23:59:21,076 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-12 23:59:21,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-12 23:59:21,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-12 23:59:21,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-12 23:59:21,270 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-12 23:59:21,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-12 23:59:21,683 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-12 23:59:21,683 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-12 23:59:21,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [21353550] [2021-10-12 23:59:21,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [21353550] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-12 23:59:21,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-12 23:59:21,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-12 23:59:21,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736634353] [2021-10-12 23:59:21,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-12 23:59:21,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-12 23:59:21,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-12 23:59:21,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-12 23:59:21,689 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:21,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-12 23:59:21,897 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2021-10-12 23:59:21,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-12 23:59:21,898 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 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 24 [2021-10-12 23:59:21,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-12 23:59:21,899 INFO L225 Difference]: With dead ends: 53 [2021-10-12 23:59:21,899 INFO L226 Difference]: Without dead ends: 31 [2021-10-12 23:59:21,899 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 268.3ms TimeCoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2021-10-12 23:59:21,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-10-12 23:59:21,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-10-12 23:59:21,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 30 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:21,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2021-10-12 23:59:21,908 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 24 [2021-10-12 23:59:21,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-12 23:59:21,910 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2021-10-12 23:59:21,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:21,911 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2021-10-12 23:59:21,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-12 23:59:21,912 INFO L504 BasicCegarLoop]: Found error trace [2021-10-12 23:59:21,913 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 5, 3, 1, 1, 1, 1, 1, 1] [2021-10-12 23:59:21,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:22,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-12 23:59:22,133 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-12 23:59:22,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-12 23:59:22,133 INFO L82 PathProgramCache]: Analyzing trace with hash -29656432, now seen corresponding path program 4 times [2021-10-12 23:59:22,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-12 23:59:22,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [80668386] [2021-10-12 23:59:22,134 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-12 23:59:22,134 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-12 23:59:22,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-12 23:59:22,135 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-12 23:59:22,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-12 23:59:22,230 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-12 23:59:22,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-12 23:59:22,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-12 23:59:22,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-12 23:59:22,709 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-12 23:59:22,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-12 23:59:23,446 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-12 23:59:23,447 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-12 23:59:23,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [80668386] [2021-10-12 23:59:23,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [80668386] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-12 23:59:23,447 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-12 23:59:23,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2021-10-12 23:59:23,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869283339] [2021-10-12 23:59:23,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-12 23:59:23,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-12 23:59:23,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-12 23:59:23,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2021-10-12 23:59:23,449 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 28 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 28 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:24,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-12 23:59:24,393 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2021-10-12 23:59:24,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-12 23:59:24,394 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 28 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-12 23:59:24,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-12 23:59:24,395 INFO L225 Difference]: With dead ends: 53 [2021-10-12 23:59:24,395 INFO L226 Difference]: Without dead ends: 37 [2021-10-12 23:59:24,396 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1304.3ms TimeCoverageRelationStatistics Valid=152, Invalid=1108, Unknown=0, NotChecked=0, Total=1260 [2021-10-12 23:59:24,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-12 23:59:24,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-10-12 23:59:24,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 36 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:24,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2021-10-12 23:59:24,404 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 30 [2021-10-12 23:59:24,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-12 23:59:24,404 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2021-10-12 23:59:24,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 28 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:24,405 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2021-10-12 23:59:24,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-12 23:59:24,414 INFO L504 BasicCegarLoop]: Found error trace [2021-10-12 23:59:24,414 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 6, 4, 1, 1, 1, 1, 1, 1] [2021-10-12 23:59:24,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:24,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-12 23:59:24,625 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-12 23:59:24,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-12 23:59:24,626 INFO L82 PathProgramCache]: Analyzing trace with hash -166593550, now seen corresponding path program 5 times [2021-10-12 23:59:24,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-12 23:59:24,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [410215123] [2021-10-12 23:59:24,627 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-12 23:59:24,627 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-12 23:59:24,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-12 23:59:24,628 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-12 23:59:24,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-12 23:59:24,748 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-10-12 23:59:24,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-12 23:59:24,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-12 23:59:24,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-12 23:59:25,655 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-12 23:59:25,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-12 23:59:26,381 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-12 23:59:26,382 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-12 23:59:26,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [410215123] [2021-10-12 23:59:26,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [410215123] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-12 23:59:26,382 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-12 23:59:26,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18, 18] imperfect sequences [] total 34 [2021-10-12 23:59:26,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490472734] [2021-10-12 23:59:26,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-10-12 23:59:26,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-12 23:59:26,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-10-12 23:59:26,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=376, Invalid=746, Unknown=0, NotChecked=0, Total=1122 [2021-10-12 23:59:26,386 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand has 34 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 34 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) [2021-10-12 23:59:26,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-12 23:59:26,523 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2021-10-12 23:59:26,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-12 23:59:26,523 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 34 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 36 [2021-10-12 23:59:26,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-12 23:59:26,524 INFO L225 Difference]: With dead ends: 39 [2021-10-12 23:59:26,524 INFO L226 Difference]: Without dead ends: 0 [2021-10-12 23:59:26,525 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 876.6ms TimeCoverageRelationStatistics Valid=376, Invalid=746, Unknown=0, NotChecked=0, Total=1122 [2021-10-12 23:59:26,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-12 23:59:26,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-12 23:59:26,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:26,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-12 23:59:26,526 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2021-10-12 23:59:26,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-12 23:59:26,526 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-12 23:59:26,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 34 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) [2021-10-12 23:59:26,526 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-12 23:59:26,526 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-12 23:59:26,529 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-12 23:59:26,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:26,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-12 23:59:26,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-12 23:59:26,743 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-12 23:59:26,882 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-12 23:59:26,884 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-12 23:59:27,575 INFO L860 garLoopResultBuilder]: At program point L33(lines 14 34) the Hoare annotation is: true [2021-10-12 23:59:27,575 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-12 23:59:27,575 INFO L853 garLoopResultBuilder]: At program point L23-2(lines 23 30) the Hoare annotation is: (let ((.cse8 ((_ zero_extend 24) ((_ extract 7 0) (bvadd ((_ zero_extend 24) ULTIMATE.start_main_~c~0) (_ bv1 32)))))) (let ((.cse6 ((_ zero_extend 24) ULTIMATE.start_main_~x~0)) (.cse2 ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse8 (_ bv1 32))))) (.cse7 ((_ zero_extend 24) ULTIMATE.start_main_~y~0))) (let ((.cse9 (= ULTIMATE.start_main_~y~0 (_ bv37 8))) (.cse10 (= .cse6 ((_ zero_extend 24) ((_ extract 7 0) (bvadd ((_ zero_extend 24) ((_ extract 7 0) (bvshl (_ bv1 32) .cse2))) .cse7))))) (.cse0 (= ULTIMATE.start_main_~y~0 (_ bv5 8))) (.cse1 (= ULTIMATE.start_main_~x~0 (_ bv37 8))) (.cse5 (= (_ bv1 8) ULTIMATE.start_main_~y~0))) (or (and .cse0 .cse1 (bvslt .cse2 (_ bv8 32)) (exists ((v_ULTIMATE.start_main_~c~0_50 (_ BitVec 8))) (let ((.cse4 ((_ zero_extend 24) v_ULTIMATE.start_main_~c~0_50))) (let ((.cse3 ((_ zero_extend 24) ((_ extract 7 0) (bvadd ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse4 (_ bv1 32)))) (_ bv1 32)))))) (and (= ULTIMATE.start_main_~c~0 ((_ extract 7 0) (bvadd .cse3 (_ bv1 32)))) (bvslt .cse4 (_ bv8 32)) (bvslt .cse3 (_ bv8 32)))))) (= ULTIMATE.start_main_~bit~0 (_ bv4 8))) (and (= ULTIMATE.start_main_~y~0 (_ bv0 8)) .cse1 (= ULTIMATE.start_main_~c~0 (_ bv0 8))) (and (= (_ bv1 8) ULTIMATE.start_main_~bit~0) .cse1 (= (_ bv1 8) ULTIMATE.start_main_~c~0) .cse5) (and (= (_ bv0 32) ((_ zero_extend 24) ULTIMATE.start_main_~bit~0)) (= .cse6 ((_ zero_extend 24) ((_ extract 7 0) (bvadd ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse7 ((_ zero_extend 24) ((_ extract 7 0) (bvshl (_ bv1 32) .cse8)))))) ((_ zero_extend 24) ((_ extract 7 0) (bvshl (_ bv1 32) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (_ bv1 32) ((_ zero_extend 24) ((_ extract 7 0) (bvadd (_ bv1 32) .cse2))))))))))))) .cse9 .cse10) (and .cse0 .cse1 (= (_ bv4 8) ULTIMATE.start_main_~c~0)) (and (exists ((v_ULTIMATE.start_main_~c~0_28 (_ BitVec 8))) (let ((.cse11 ((_ zero_extend 24) v_ULTIMATE.start_main_~c~0_28))) (and (not (= ((_ zero_extend 24) ((_ extract 7 0) (bvand (_ bv37 32) ((_ zero_extend 24) ((_ extract 7 0) (bvshl (_ bv1 32) .cse11)))))) (_ bv0 32))) (= ULTIMATE.start_main_~c~0 ((_ extract 7 0) (bvadd .cse11 (_ bv1 32))))))) (exists ((v_ULTIMATE.start_main_~c~0_50 (_ BitVec 8))) (let ((.cse13 ((_ zero_extend 24) v_ULTIMATE.start_main_~c~0_50))) (let ((.cse12 ((_ zero_extend 24) ((_ extract 7 0) (bvadd ((_ zero_extend 24) ((_ extract 7 0) (bvadd ((_ zero_extend 24) ((_ extract 7 0) (bvadd ((_ zero_extend 24) ((_ extract 7 0) (bvadd ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse13 (_ bv1 32)))) (_ bv1 32)))) (_ bv1 32)))) (_ bv1 32)))) (_ bv1 32)))))) (and (= ULTIMATE.start_main_~c~0 ((_ extract 7 0) (bvadd .cse12 (_ bv1 32)))) (bvslt .cse12 (_ bv8 32)) (bvslt .cse13 (_ bv8 32)))))) .cse9 .cse10) (and .cse0 (= ULTIMATE.start_main_~c~0 (_ bv5 8)) .cse1) (and .cse1 (= (_ bv2 8) ULTIMATE.start_main_~c~0) .cse5))))) [2021-10-12 23:59:27,576 INFO L857 garLoopResultBuilder]: For program point L23-3(lines 23 30) no Hoare annotation was computed. [2021-10-12 23:59:27,576 INFO L857 garLoopResultBuilder]: For program point L7(lines 7 9) no Hoare annotation was computed. [2021-10-12 23:59:27,576 INFO L860 garLoopResultBuilder]: At program point L7-2(lines 6 11) the Hoare annotation is: true [2021-10-12 23:59:27,576 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-12 23:59:27,576 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-12 23:59:27,577 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-12 23:59:27,577 INFO L857 garLoopResultBuilder]: For program point L26(lines 26 28) no Hoare annotation was computed. [2021-10-12 23:59:27,577 INFO L857 garLoopResultBuilder]: For program point L26-2(lines 26 28) no Hoare annotation was computed. [2021-10-12 23:59:27,577 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2021-10-12 23:59:27,577 INFO L857 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2021-10-12 23:59:27,581 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-12 23:59:27,588 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2021-10-12 23:59:27,588 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2021-10-12 23:59:27,589 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2021-10-12 23:59:27,589 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2021-10-12 23:59:27,589 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2021-10-12 23:59:27,590 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2021-10-12 23:59:27,590 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2021-10-12 23:59:27,590 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2021-10-12 23:59:27,600 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2021-10-12 23:59:27,601 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2021-10-12 23:59:27,601 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2021-10-12 23:59:27,601 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2021-10-12 23:59:27,602 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2021-10-12 23:59:27,603 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2021-10-12 23:59:27,603 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2021-10-12 23:59:27,603 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2021-10-12 23:59:27,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 11:59:27 BoogieIcfgContainer [2021-10-12 23:59:27,617 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-12 23:59:27,618 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-12 23:59:27,618 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-12 23:59:27,618 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-12 23:59:27,619 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:59:17" (3/4) ... [2021-10-12 23:59:27,622 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-12 23:59:27,635 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-12 23:59:27,636 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-12 23:59:27,636 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-12 23:59:27,636 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-12 23:59:27,670 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((y == 5bv8 && x == 37bv8) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32)) && (\exists v_ULTIMATE.start_main_~c~0_50 : bv8 :: (c == ~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0] && ~bvslt32(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32))) && bit == 4bv8) || ((y == 0bv8 && x == 37bv8) && c == 0bv8)) || (((1bv8 == bit && x == 37bv8) && 1bv8 == c) && 1bv8 == y)) || (((0bv32 == ~zero_extendFrom8To32(bit) && ~zero_extendFrom8To32(x) == ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(y), ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]))[7:0]))[7:0]), ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(1bv32, ~zero_extendFrom8To32(~bvadd64(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 1bv32)[7:0]))[7:0]))[7:0]))[7:0]))[7:0])) && y == 37bv8) && ~zero_extendFrom8To32(x) == ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 1bv32)[7:0]))[7:0]), ~zero_extendFrom8To32(y))[7:0]))) || ((y == 5bv8 && x == 37bv8) && 4bv8 == c)) || ((((\exists v_ULTIMATE.start_main_~c~0_28 : bv8 :: !(~zero_extendFrom8To32(~bvand32(37bv32, ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_28))[7:0]))[7:0]) == 0bv32) && c == ~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_28), 1bv32)[7:0]) && (\exists v_ULTIMATE.start_main_~c~0_50 : bv8 :: (c == ~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0] && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 8bv32))) && y == 37bv8) && ~zero_extendFrom8To32(x) == ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 1bv32)[7:0]))[7:0]), ~zero_extendFrom8To32(y))[7:0]))) || ((y == 5bv8 && c == 5bv8) && x == 37bv8)) || ((x == 37bv8 && 2bv8 == c) && 1bv8 == y) [2021-10-12 23:59:27,678 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-12 23:59:27,679 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-12 23:59:27,680 INFO L168 Benchmark]: Toolchain (without parser) took 10581.17 ms. Allocated memory was 56.6 MB in the beginning and 75.5 MB in the end (delta: 18.9 MB). Free memory was 33.6 MB in the beginning and 29.0 MB in the end (delta: 4.5 MB). Peak memory consumption was 22.9 MB. Max. memory is 16.1 GB. [2021-10-12 23:59:27,683 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 56.6 MB. Free memory was 36.9 MB in the beginning and 36.9 MB in the end (delta: 44.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-12 23:59:27,684 INFO L168 Benchmark]: CACSL2BoogieTranslator took 230.39 ms. Allocated memory was 56.6 MB in the beginning and 75.5 MB in the end (delta: 18.9 MB). Free memory was 33.4 MB in the beginning and 58.4 MB in the end (delta: -25.0 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. [2021-10-12 23:59:27,684 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.75 ms. Allocated memory is still 75.5 MB. Free memory was 58.4 MB in the beginning and 56.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-12 23:59:27,685 INFO L168 Benchmark]: Boogie Preprocessor took 53.20 ms. Allocated memory is still 75.5 MB. Free memory was 56.9 MB in the beginning and 55.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-12 23:59:27,685 INFO L168 Benchmark]: RCFGBuilder took 415.63 ms. Allocated memory is still 75.5 MB. Free memory was 55.7 MB in the beginning and 46.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-12 23:59:27,685 INFO L168 Benchmark]: TraceAbstraction took 9746.34 ms. Allocated memory is still 75.5 MB. Free memory was 45.9 MB in the beginning and 31.8 MB in the end (delta: 14.1 MB). Peak memory consumption was 25.9 MB. Max. memory is 16.1 GB. [2021-10-12 23:59:27,686 INFO L168 Benchmark]: Witness Printer took 61.00 ms. Allocated memory is still 75.5 MB. Free memory was 31.8 MB in the beginning and 29.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-12 23:59:27,688 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 56.6 MB. Free memory was 36.9 MB in the beginning and 36.9 MB in the end (delta: 44.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 230.39 ms. Allocated memory was 56.6 MB in the beginning and 75.5 MB in the end (delta: 18.9 MB). Free memory was 33.4 MB in the beginning and 58.4 MB in the end (delta: -25.0 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 67.75 ms. Allocated memory is still 75.5 MB. Free memory was 58.4 MB in the beginning and 56.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 53.20 ms. Allocated memory is still 75.5 MB. Free memory was 56.9 MB in the beginning and 55.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 415.63 ms. Allocated memory is still 75.5 MB. Free memory was 55.7 MB in the beginning and 46.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9746.34 ms. Allocated memory is still 75.5 MB. Free memory was 45.9 MB in the beginning and 31.8 MB in the end (delta: 14.1 MB). Peak memory consumption was 25.9 MB. Max. memory is 16.1 GB. * Witness Printer took 61.00 ms. Allocated memory is still 75.5 MB. Free memory was 31.8 MB in the beginning and 29.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 8]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9630.6ms, OverallIterations: 8, TraceHistogramMax: 10, EmptinessCheckTime: 36.7ms, AutomataDifference: 1783.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 835.5ms, InitialAbstractionConstructionTime: 12.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 77 SDtfs, 149 SDslu, 286 SDs, 0 SdLazy, 677 SolverSat, 46 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 593.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 310 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 2788.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=7, InterpolantAutomatonStates: 84, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 81.0ms AutomataMinimizationTime, 8 MinimizatonAttempts, 19 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 16 NumberOfFragments, 289 HoareAnnotationTreeSize, 3 FomulaSimplifications, 127 FormulaSimplificationTreeSizeReduction, 142.0ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 630 FormulaSimplificationTreeSizeReductionInter, 687.0ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 69.0ms SsaConstructionTime, 170.3ms SatisfiabilityAnalysisTime, 4388.0ms InterpolantComputationTime, 150 NumberOfCodeBlocks, 129 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 284 ConstructedInterpolants, 39 QuantifiedInterpolants, 3243 SizeOfPredicates, 24 NumberOfNonLiveVariables, 361 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 16 InterpolantComputations, 8 PerfectInterpolantSequences, 472/698 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant [2021-10-12 23:59:27,701 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2021-10-12 23:59:27,701 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2021-10-12 23:59:27,701 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2021-10-12 23:59:27,702 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2021-10-12 23:59:27,702 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2021-10-12 23:59:27,702 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2021-10-12 23:59:27,702 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2021-10-12 23:59:27,703 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2021-10-12 23:59:27,707 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2021-10-12 23:59:27,707 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2021-10-12 23:59:27,707 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2021-10-12 23:59:27,707 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2021-10-12 23:59:27,708 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_28,QUANTIFIED] [2021-10-12 23:59:27,708 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2021-10-12 23:59:27,708 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] [2021-10-12 23:59:27,708 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~c~0_50,QUANTIFIED] Derived loop invariant: ((((((((((y == 5bv8 && x == 37bv8) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32)) && (\exists v_ULTIMATE.start_main_~c~0_50 : bv8 :: (c == ~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0] && ~bvslt32(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32))) && bit == 4bv8) || ((y == 0bv8 && x == 37bv8) && c == 0bv8)) || (((1bv8 == bit && x == 37bv8) && 1bv8 == c) && 1bv8 == y)) || (((0bv32 == ~zero_extendFrom8To32(bit) && ~zero_extendFrom8To32(x) == ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(y), ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]))[7:0]))[7:0]), ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(1bv32, ~zero_extendFrom8To32(~bvadd64(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 1bv32)[7:0]))[7:0]))[7:0]))[7:0]))[7:0])) && y == 37bv8) && ~zero_extendFrom8To32(x) == ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 1bv32)[7:0]))[7:0]), ~zero_extendFrom8To32(y))[7:0]))) || ((y == 5bv8 && x == 37bv8) && 4bv8 == c)) || ((((\exists v_ULTIMATE.start_main_~c~0_28 : bv8 :: !(~zero_extendFrom8To32(~bvand32(37bv32, ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_28))[7:0]))[7:0]) == 0bv32) && c == ~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_28), 1bv32)[7:0]) && (\exists v_ULTIMATE.start_main_~c~0_50 : bv8 :: (c == ~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0] && ~bvslt32(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 1bv32)[7:0]), 8bv32)) && ~bvslt32(~zero_extendFrom8To32(v_ULTIMATE.start_main_~c~0_50), 8bv32))) && y == 37bv8) && ~zero_extendFrom8To32(x) == ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(~bvadd64(~zero_extendFrom8To32(c), 1bv32)[7:0]), 1bv32)[7:0]))[7:0]), ~zero_extendFrom8To32(y))[7:0]))) || ((y == 5bv8 && c == 5bv8) && x == 37bv8)) || ((x == 37bv8 && 2bv8 == c) && 1bv8 == y) - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-12 23:59:27,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42a28ac6-bab5-4837-8bbc-756311e612dc/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...