./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/psyco/psyco_abp_1-3.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_ecc94ca2-79e6-4fe7-a6ee-26feca6e888d/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc94ca2-79e6-4fe7-a6ee-26feca6e888d/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_ecc94ca2-79e6-4fe7-a6ee-26feca6e888d/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc94ca2-79e6-4fe7-a6ee-26feca6e888d/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/psyco/psyco_abp_1-3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc94ca2-79e6-4fe7-a6ee-26feca6e888d/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_ecc94ca2-79e6-4fe7-a6ee-26feca6e888d/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 0db572bf30caf92f48b0dba5a9cc25cec23b8ac8 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:50:17,769 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:50:17,771 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:50:17,801 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:50:17,802 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:50:17,803 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:50:17,805 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:50:17,807 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:50:17,809 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:50:17,811 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:50:17,812 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:50:17,813 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:50:17,814 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:50:17,815 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:50:17,817 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:50:17,818 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:50:17,820 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:50:17,821 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:50:17,823 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:50:17,825 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:50:17,827 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:50:17,829 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:50:17,830 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:50:17,831 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:50:17,834 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:50:17,835 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:50:17,835 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:50:17,836 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:50:17,837 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:50:17,838 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:50:17,838 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:50:17,839 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:50:17,840 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:50:17,841 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:50:17,842 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:50:17,843 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:50:17,843 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:50:17,844 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:50:17,844 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:50:17,845 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:50:17,845 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:50:17,846 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc94ca2-79e6-4fe7-a6ee-26feca6e888d/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-13 00:50:17,871 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:50:17,871 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:50:17,871 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:50:17,872 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:50:17,873 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:50:17,873 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:50:17,873 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:50:17,873 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:50:17,873 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:50:17,874 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:50:17,874 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:50:17,874 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:50:17,874 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 00:50:17,874 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:50:17,875 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 00:50:17,875 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:50:17,875 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 00:50:17,875 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:50:17,875 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 00:50:17,876 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:50:17,876 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:50:17,876 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:50:17,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:50:17,876 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:50:17,877 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:50:17,877 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 00:50:17,877 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:50:17,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 00:50:17,877 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 00:50:17,878 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:50:17,878 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_ecc94ca2-79e6-4fe7-a6ee-26feca6e888d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc94ca2-79e6-4fe7-a6ee-26feca6e888d/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0db572bf30caf92f48b0dba5a9cc25cec23b8ac8 [2021-10-13 00:50:18,229 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:50:18,252 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:50:18,255 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:50:18,256 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:50:18,257 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:50:18,258 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc94ca2-79e6-4fe7-a6ee-26feca6e888d/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/psyco/psyco_abp_1-3.c [2021-10-13 00:50:18,354 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc94ca2-79e6-4fe7-a6ee-26feca6e888d/bin/uautomizer-WNIpwEf4Nt/data/d33612a5f/17e3ea1f98ae4747ac2750efcf60fa97/FLAG97074a904 [2021-10-13 00:50:18,989 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:50:18,990 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc94ca2-79e6-4fe7-a6ee-26feca6e888d/sv-benchmarks/c/psyco/psyco_abp_1-3.c [2021-10-13 00:50:19,010 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc94ca2-79e6-4fe7-a6ee-26feca6e888d/bin/uautomizer-WNIpwEf4Nt/data/d33612a5f/17e3ea1f98ae4747ac2750efcf60fa97/FLAG97074a904 [2021-10-13 00:50:19,285 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc94ca2-79e6-4fe7-a6ee-26feca6e888d/bin/uautomizer-WNIpwEf4Nt/data/d33612a5f/17e3ea1f98ae4747ac2750efcf60fa97 [2021-10-13 00:50:19,288 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:50:19,290 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 00:50:19,294 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:50:19,294 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:50:19,297 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:50:19,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:50:19" (1/1) ... [2021-10-13 00:50:19,299 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ea310dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:50:19, skipping insertion in model container [2021-10-13 00:50:19,300 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:50:19" (1/1) ... [2021-10-13 00:50:19,306 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:50:19,350 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:50:19,688 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_ecc94ca2-79e6-4fe7-a6ee-26feca6e888d/sv-benchmarks/c/psyco/psyco_abp_1-3.c[24720,24733] [2021-10-13 00:50:19,707 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:50:19,716 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:50:19,797 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_ecc94ca2-79e6-4fe7-a6ee-26feca6e888d/sv-benchmarks/c/psyco/psyco_abp_1-3.c[24720,24733] [2021-10-13 00:50:19,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:50:19,827 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:50:19,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:50:19 WrapperNode [2021-10-13 00:50:19,828 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:50:19,829 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 00:50:19,829 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 00:50:19,830 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 00:50:19,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:50:19" (1/1) ... [2021-10-13 00:50:19,855 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:50:19" (1/1) ... [2021-10-13 00:50:19,952 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 00:50:19,953 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:50:19,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:50:19,953 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:50:19,963 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:50:19" (1/1) ... [2021-10-13 00:50:19,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:50:19" (1/1) ... [2021-10-13 00:50:19,982 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:50:19" (1/1) ... [2021-10-13 00:50:19,986 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:50:19" (1/1) ... [2021-10-13 00:50:20,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:50:19" (1/1) ... [2021-10-13 00:50:20,038 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:50:19" (1/1) ... [2021-10-13 00:50:20,045 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:50:19" (1/1) ... [2021-10-13 00:50:20,054 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:50:20,055 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:50:20,056 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:50:20,056 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:50:20,057 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:50:19" (1/1) ... [2021-10-13 00:50:20,070 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:50:20,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc94ca2-79e6-4fe7-a6ee-26feca6e888d/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:50:20,100 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc94ca2-79e6-4fe7-a6ee-26feca6e888d/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:50:20,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc94ca2-79e6-4fe7-a6ee-26feca6e888d/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:50:20,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:50:20,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:50:20,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 00:50:20,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:50:21,088 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:50:21,088 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-13 00:50:21,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:50:21 BoogieIcfgContainer [2021-10-13 00:50:21,091 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:50:21,095 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:50:21,096 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:50:21,100 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:50:21,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:50:19" (1/3) ... [2021-10-13 00:50:21,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ba00b2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:50:21, skipping insertion in model container [2021-10-13 00:50:21,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:50:19" (2/3) ... [2021-10-13 00:50:21,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ba00b2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:50:21, skipping insertion in model container [2021-10-13 00:50:21,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:50:21" (3/3) ... [2021-10-13 00:50:21,103 INFO L111 eAbstractionObserver]: Analyzing ICFG psyco_abp_1-3.c [2021-10-13 00:50:21,109 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:50:21,109 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 00:50:21,162 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:50:21,169 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 [2021-10-13 00:50:21,169 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 00:50:21,188 INFO L276 IsEmpty]: Start isEmpty. Operand has 109 states, 107 states have (on average 1.9532710280373833) internal successors, (209), 108 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:21,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 00:50:21,194 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:50:21,194 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:50:21,195 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:50:21,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:50:21,200 INFO L82 PathProgramCache]: Analyzing trace with hash 352571511, now seen corresponding path program 1 times [2021-10-13 00:50:21,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:50:21,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561712503] [2021-10-13 00:50:21,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:50:21,212 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:50:21,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:50:21,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:50:21,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:50:21,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561712503] [2021-10-13 00:50:21,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561712503] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:50:21,372 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:50:21,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 00:50:21,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602451331] [2021-10-13 00:50:21,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 00:50:21,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:50:21,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 00:50:21,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 00:50:21,394 INFO L87 Difference]: Start difference. First operand has 109 states, 107 states have (on average 1.9532710280373833) internal successors, (209), 108 states have internal predecessors, (209), 0 states have call successors, (0), 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 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:21,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:50:21,422 INFO L93 Difference]: Finished difference Result 216 states and 416 transitions. [2021-10-13 00:50:21,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 00:50:21,423 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 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 [2021-10-13 00:50:21,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:50:21,433 INFO L225 Difference]: With dead ends: 216 [2021-10-13 00:50:21,433 INFO L226 Difference]: Without dead ends: 100 [2021-10-13 00:50:21,436 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 [2021-10-13 00:50:21,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-10-13 00:50:21,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2021-10-13 00:50:21,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.6666666666666667) internal successors, (165), 99 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:21,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 165 transitions. [2021-10-13 00:50:21,475 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 165 transitions. Word has length 9 [2021-10-13 00:50:21,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:50:21,475 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 165 transitions. [2021-10-13 00:50:21,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:21,476 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 165 transitions. [2021-10-13 00:50:21,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 00:50:21,477 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:50:21,477 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:50:21,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 00:50:21,477 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:50:21,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:50:21,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1422697561, now seen corresponding path program 1 times [2021-10-13 00:50:21,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:50:21,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801331618] [2021-10-13 00:50:21,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:50:21,479 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:50:21,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:50:21,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:50:21,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:50:21,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801331618] [2021-10-13 00:50:21,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801331618] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:50:21,538 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:50:21,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:50:21,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704154188] [2021-10-13 00:50:21,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:50:21,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:50:21,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:50:21,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:50:21,541 INFO L87 Difference]: Start difference. First operand 100 states and 165 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2021-10-13 00:50:21,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:50:21,613 INFO L93 Difference]: Finished difference Result 201 states and 332 transitions. [2021-10-13 00:50:21,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:50:21,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) Word has length 10 [2021-10-13 00:50:21,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:50:21,617 INFO L225 Difference]: With dead ends: 201 [2021-10-13 00:50:21,617 INFO L226 Difference]: Without dead ends: 103 [2021-10-13 00:50:21,618 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:50:21,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-10-13 00:50:21,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2021-10-13 00:50:21,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.6470588235294117) internal successors, (168), 102 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:21,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 168 transitions. [2021-10-13 00:50:21,633 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 168 transitions. Word has length 10 [2021-10-13 00:50:21,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:50:21,634 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 168 transitions. [2021-10-13 00:50:21,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2021-10-13 00:50:21,634 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 168 transitions. [2021-10-13 00:50:21,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 00:50:21,635 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:50:21,636 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:50:21,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 00:50:21,636 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:50:21,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:50:21,638 INFO L82 PathProgramCache]: Analyzing trace with hash 658032730, now seen corresponding path program 1 times [2021-10-13 00:50:21,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:50:21,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351371035] [2021-10-13 00:50:21,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:50:21,640 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:50:21,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:50:21,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:50:21,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:50:21,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351371035] [2021-10-13 00:50:21,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351371035] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:50:21,885 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:50:21,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:50:21,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802508308] [2021-10-13 00:50:21,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:50:21,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:50:21,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:50:21,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:50:21,887 INFO L87 Difference]: Start difference. First operand 103 states and 168 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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) [2021-10-13 00:50:22,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:50:22,028 INFO L93 Difference]: Finished difference Result 205 states and 334 transitions. [2021-10-13 00:50:22,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:50:22,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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) Word has length 15 [2021-10-13 00:50:22,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:50:22,031 INFO L225 Difference]: With dead ends: 205 [2021-10-13 00:50:22,031 INFO L226 Difference]: Without dead ends: 186 [2021-10-13 00:50:22,032 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:50:22,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-10-13 00:50:22,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 172. [2021-10-13 00:50:22,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 1.6432748538011697) internal successors, (281), 171 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:22,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 281 transitions. [2021-10-13 00:50:22,051 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 281 transitions. Word has length 15 [2021-10-13 00:50:22,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:50:22,051 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 281 transitions. [2021-10-13 00:50:22,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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) [2021-10-13 00:50:22,052 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 281 transitions. [2021-10-13 00:50:22,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 00:50:22,054 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:50:22,054 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:50:22,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 00:50:22,054 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:50:22,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:50:22,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1675425412, now seen corresponding path program 1 times [2021-10-13 00:50:22,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:50:22,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812447906] [2021-10-13 00:50:22,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:50:22,057 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:50:22,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:50:22,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:50:22,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:50:22,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812447906] [2021-10-13 00:50:22,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812447906] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:50:22,133 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:50:22,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:50:22,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596691056] [2021-10-13 00:50:22,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:50:22,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:50:22,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:50:22,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:50:22,136 INFO L87 Difference]: Start difference. First operand 172 states and 281 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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) [2021-10-13 00:50:22,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:50:22,177 INFO L93 Difference]: Finished difference Result 293 states and 477 transitions. [2021-10-13 00:50:22,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:50:22,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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) Word has length 16 [2021-10-13 00:50:22,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:50:22,180 INFO L225 Difference]: With dead ends: 293 [2021-10-13 00:50:22,180 INFO L226 Difference]: Without dead ends: 124 [2021-10-13 00:50:22,184 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:50:22,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-10-13 00:50:22,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2021-10-13 00:50:22,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 1.603305785123967) internal successors, (194), 121 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:22,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 194 transitions. [2021-10-13 00:50:22,206 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 194 transitions. Word has length 16 [2021-10-13 00:50:22,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:50:22,206 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 194 transitions. [2021-10-13 00:50:22,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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) [2021-10-13 00:50:22,206 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 194 transitions. [2021-10-13 00:50:22,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 00:50:22,209 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:50:22,209 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:50:22,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 00:50:22,209 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:50:22,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:50:22,211 INFO L82 PathProgramCache]: Analyzing trace with hash -843118083, now seen corresponding path program 1 times [2021-10-13 00:50:22,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:50:22,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649302845] [2021-10-13 00:50:22,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:50:22,212 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:50:22,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:50:22,297 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 00:50:22,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:50:22,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649302845] [2021-10-13 00:50:22,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649302845] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:50:22,298 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:50:22,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:50:22,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68426960] [2021-10-13 00:50:22,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:50:22,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:50:22,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:50:22,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:50:22,301 INFO L87 Difference]: Start difference. First operand 122 states and 194 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 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) [2021-10-13 00:50:22,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:50:22,330 INFO L93 Difference]: Finished difference Result 226 states and 358 transitions. [2021-10-13 00:50:22,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:50:22,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 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 21 [2021-10-13 00:50:22,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:50:22,334 INFO L225 Difference]: With dead ends: 226 [2021-10-13 00:50:22,334 INFO L226 Difference]: Without dead ends: 107 [2021-10-13 00:50:22,334 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:50:22,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-10-13 00:50:22,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 105. [2021-10-13 00:50:22,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.5673076923076923) internal successors, (163), 104 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:22,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 163 transitions. [2021-10-13 00:50:22,354 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 163 transitions. Word has length 21 [2021-10-13 00:50:22,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:50:22,354 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 163 transitions. [2021-10-13 00:50:22,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 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) [2021-10-13 00:50:22,355 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 163 transitions. [2021-10-13 00:50:22,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-13 00:50:22,360 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:50:22,360 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:50:22,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 00:50:22,360 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:50:22,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:50:22,361 INFO L82 PathProgramCache]: Analyzing trace with hash -671640130, now seen corresponding path program 1 times [2021-10-13 00:50:22,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:50:22,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464667524] [2021-10-13 00:50:22,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:50:22,362 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:50:22,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:50:22,584 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:50:22,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:50:22,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464667524] [2021-10-13 00:50:22,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464667524] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:50:22,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772281982] [2021-10-13 00:50:22,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:50:22,585 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:50:22,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc94ca2-79e6-4fe7-a6ee-26feca6e888d/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:50:22,588 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc94ca2-79e6-4fe7-a6ee-26feca6e888d/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:50:22,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc94ca2-79e6-4fe7-a6ee-26feca6e888d/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 00:50:22,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:50:22,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 00:50:22,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:50:22,836 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:50:22,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772281982] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:50:22,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:50:22,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2021-10-13 00:50:22,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146307579] [2021-10-13 00:50:22,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:50:22,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:50:22,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:50:22,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:50:22,850 INFO L87 Difference]: Start difference. First operand 105 states and 163 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 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) [2021-10-13 00:50:23,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:50:23,424 INFO L93 Difference]: Finished difference Result 359 states and 564 transitions. [2021-10-13 00:50:23,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 00:50:23,425 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 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) Word has length 23 [2021-10-13 00:50:23,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:50:23,427 INFO L225 Difference]: With dead ends: 359 [2021-10-13 00:50:23,427 INFO L226 Difference]: Without dead ends: 319 [2021-10-13 00:50:23,427 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 120.0ms TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-10-13 00:50:23,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2021-10-13 00:50:23,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 275. [2021-10-13 00:50:23,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 274 states have (on average 1.583941605839416) internal successors, (434), 274 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:23,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 434 transitions. [2021-10-13 00:50:23,439 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 434 transitions. Word has length 23 [2021-10-13 00:50:23,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:50:23,439 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 434 transitions. [2021-10-13 00:50:23,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 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) [2021-10-13 00:50:23,440 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 434 transitions. [2021-10-13 00:50:23,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 00:50:23,441 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:50:23,441 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:50:23,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc94ca2-79e6-4fe7-a6ee-26feca6e888d/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 00:50:23,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc94ca2-79e6-4fe7-a6ee-26feca6e888d/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-13 00:50:23,654 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:50:23,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:50:23,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1800121285, now seen corresponding path program 1 times [2021-10-13 00:50:23,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:50:23,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153767449] [2021-10-13 00:50:23,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:50:23,655 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:50:23,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:50:23,716 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 00:50:23,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:50:23,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153767449] [2021-10-13 00:50:23,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153767449] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:50:23,717 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:50:23,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:50:23,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457764509] [2021-10-13 00:50:23,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:50:23,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:50:23,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:50:23,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:50:23,719 INFO L87 Difference]: Start difference. First operand 275 states and 434 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:23,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:50:23,762 INFO L93 Difference]: Finished difference Result 548 states and 861 transitions. [2021-10-13 00:50:23,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:50:23,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 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 25 [2021-10-13 00:50:23,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:50:23,765 INFO L225 Difference]: With dead ends: 548 [2021-10-13 00:50:23,766 INFO L226 Difference]: Without dead ends: 297 [2021-10-13 00:50:23,766 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:50:23,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-10-13 00:50:23,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 295. [2021-10-13 00:50:23,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 294 states have (on average 1.5442176870748299) internal successors, (454), 294 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:23,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 454 transitions. [2021-10-13 00:50:23,780 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 454 transitions. Word has length 25 [2021-10-13 00:50:23,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:50:23,781 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 454 transitions. [2021-10-13 00:50:23,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:23,781 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 454 transitions. [2021-10-13 00:50:23,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-13 00:50:23,782 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:50:23,783 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:50:23,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-13 00:50:23,783 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:50:23,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:50:23,784 INFO L82 PathProgramCache]: Analyzing trace with hash 2124865792, now seen corresponding path program 1 times [2021-10-13 00:50:23,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:50:23,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31148036] [2021-10-13 00:50:23,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:50:23,785 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:50:23,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:50:23,922 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:50:23,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:50:23,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31148036] [2021-10-13 00:50:23,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31148036] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:50:23,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83779389] [2021-10-13 00:50:23,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:50:23,923 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:50:23,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc94ca2-79e6-4fe7-a6ee-26feca6e888d/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:50:23,924 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc94ca2-79e6-4fe7-a6ee-26feca6e888d/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:50:23,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc94ca2-79e6-4fe7-a6ee-26feca6e888d/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 00:50:24,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:50:24,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 00:50:24,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:50:24,229 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-13 00:50:24,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83779389] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:50:24,230 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:50:24,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-10-13 00:50:24,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825944794] [2021-10-13 00:50:24,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:50:24,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:50:24,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:50:24,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:50:24,232 INFO L87 Difference]: Start difference. First operand 295 states and 454 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 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) [2021-10-13 00:50:24,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:50:24,245 INFO L93 Difference]: Finished difference Result 298 states and 456 transitions. [2021-10-13 00:50:24,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:50:24,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 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 27 [2021-10-13 00:50:24,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:50:24,248 INFO L225 Difference]: With dead ends: 298 [2021-10-13 00:50:24,248 INFO L226 Difference]: Without dead ends: 292 [2021-10-13 00:50:24,248 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.8ms TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:50:24,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-10-13 00:50:24,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 291. [2021-10-13 00:50:24,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 290 states have (on average 1.5241379310344827) internal successors, (442), 290 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:24,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 442 transitions. [2021-10-13 00:50:24,259 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 442 transitions. Word has length 27 [2021-10-13 00:50:24,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:50:24,259 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 442 transitions. [2021-10-13 00:50:24,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 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) [2021-10-13 00:50:24,259 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 442 transitions. [2021-10-13 00:50:24,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-13 00:50:24,260 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:50:24,260 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:50:24,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc94ca2-79e6-4fe7-a6ee-26feca6e888d/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 00:50:24,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc94ca2-79e6-4fe7-a6ee-26feca6e888d/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:50:24,477 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:50:24,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:50:24,477 INFO L82 PathProgramCache]: Analyzing trace with hash -917092134, now seen corresponding path program 1 times [2021-10-13 00:50:24,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:50:24,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157876104] [2021-10-13 00:50:24,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:50:24,478 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:50:24,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:50:24,531 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-13 00:50:24,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:50:24,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157876104] [2021-10-13 00:50:24,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157876104] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:50:24,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:50:24,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:50:24,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141764790] [2021-10-13 00:50:24,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:50:24,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:50:24,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:50:24,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:50:24,534 INFO L87 Difference]: Start difference. First operand 291 states and 442 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 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) [2021-10-13 00:50:24,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:50:24,561 INFO L93 Difference]: Finished difference Result 510 states and 775 transitions. [2021-10-13 00:50:24,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:50:24,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 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) Word has length 33 [2021-10-13 00:50:24,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:50:24,563 INFO L225 Difference]: With dead ends: 510 [2021-10-13 00:50:24,564 INFO L226 Difference]: Without dead ends: 243 [2021-10-13 00:50:24,564 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:50:24,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-10-13 00:50:24,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 241. [2021-10-13 00:50:24,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 1.5041666666666667) internal successors, (361), 240 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:24,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 361 transitions. [2021-10-13 00:50:24,574 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 361 transitions. Word has length 33 [2021-10-13 00:50:24,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:50:24,574 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 361 transitions. [2021-10-13 00:50:24,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 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) [2021-10-13 00:50:24,575 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 361 transitions. [2021-10-13 00:50:24,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 00:50:24,576 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:50:24,576 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:50:24,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-13 00:50:24,576 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:50:24,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:50:24,577 INFO L82 PathProgramCache]: Analyzing trace with hash 272165387, now seen corresponding path program 1 times [2021-10-13 00:50:24,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:50:24,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131125948] [2021-10-13 00:50:24,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:50:24,577 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:50:24,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:50:24,613 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-13 00:50:24,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:50:24,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131125948] [2021-10-13 00:50:24,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131125948] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:50:24,614 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:50:24,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:50:24,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869491611] [2021-10-13 00:50:24,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:50:24,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:50:24,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:50:24,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:50:24,616 INFO L87 Difference]: Start difference. First operand 241 states and 361 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:24,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:50:24,644 INFO L93 Difference]: Finished difference Result 424 states and 632 transitions. [2021-10-13 00:50:24,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:50:24,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 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 37 [2021-10-13 00:50:24,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:50:24,646 INFO L225 Difference]: With dead ends: 424 [2021-10-13 00:50:24,646 INFO L226 Difference]: Without dead ends: 225 [2021-10-13 00:50:24,647 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:50:24,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-10-13 00:50:24,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 223. [2021-10-13 00:50:24,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 1.4594594594594594) internal successors, (324), 222 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:24,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 324 transitions. [2021-10-13 00:50:24,656 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 324 transitions. Word has length 37 [2021-10-13 00:50:24,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:50:24,656 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 324 transitions. [2021-10-13 00:50:24,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:24,656 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 324 transitions. [2021-10-13 00:50:24,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-13 00:50:24,657 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:50:24,657 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:50:24,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-13 00:50:24,658 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:50:24,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:50:24,658 INFO L82 PathProgramCache]: Analyzing trace with hash -140510671, now seen corresponding path program 1 times [2021-10-13 00:50:24,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:50:24,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643111394] [2021-10-13 00:50:24,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:50:24,659 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:50:24,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:50:24,706 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-10-13 00:50:24,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:50:24,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643111394] [2021-10-13 00:50:24,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643111394] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:50:24,707 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:50:24,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:50:24,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543024432] [2021-10-13 00:50:24,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:50:24,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:50:24,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:50:24,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:50:24,709 INFO L87 Difference]: Start difference. First operand 223 states and 324 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 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) [2021-10-13 00:50:24,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:50:24,736 INFO L93 Difference]: Finished difference Result 305 states and 442 transitions. [2021-10-13 00:50:24,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:50:24,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 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) Word has length 46 [2021-10-13 00:50:24,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:50:24,738 INFO L225 Difference]: With dead ends: 305 [2021-10-13 00:50:24,738 INFO L226 Difference]: Without dead ends: 143 [2021-10-13 00:50:24,738 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:50:24,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-10-13 00:50:24,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 141. [2021-10-13 00:50:24,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.4214285714285715) internal successors, (199), 140 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:24,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 199 transitions. [2021-10-13 00:50:24,745 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 199 transitions. Word has length 46 [2021-10-13 00:50:24,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:50:24,745 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 199 transitions. [2021-10-13 00:50:24,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 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) [2021-10-13 00:50:24,746 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 199 transitions. [2021-10-13 00:50:24,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 00:50:24,746 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:50:24,747 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:50:24,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-13 00:50:24,747 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:50:24,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:50:24,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1014660280, now seen corresponding path program 1 times [2021-10-13 00:50:24,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:50:24,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595286774] [2021-10-13 00:50:24,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:50:24,748 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:50:24,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:50:24,862 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 20 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-13 00:50:24,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:50:24,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595286774] [2021-10-13 00:50:24,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595286774] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:50:24,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112854282] [2021-10-13 00:50:24,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:50:24,864 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:50:24,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc94ca2-79e6-4fe7-a6ee-26feca6e888d/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:50:24,865 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc94ca2-79e6-4fe7-a6ee-26feca6e888d/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:50:24,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc94ca2-79e6-4fe7-a6ee-26feca6e888d/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 00:50:25,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:50:25,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 00:50:25,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:50:25,350 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:50:25,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112854282] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:50:25,351 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:50:25,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-13 00:50:25,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321680034] [2021-10-13 00:50:25,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 00:50:25,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:50:25,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 00:50:25,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:50:25,352 INFO L87 Difference]: Start difference. First operand 141 states and 199 transitions. Second operand has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:25,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:50:25,455 INFO L93 Difference]: Finished difference Result 167 states and 233 transitions. [2021-10-13 00:50:25,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 00:50:25,456 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-10-13 00:50:25,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:50:25,457 INFO L225 Difference]: With dead ends: 167 [2021-10-13 00:50:25,458 INFO L226 Difference]: Without dead ends: 160 [2021-10-13 00:50:25,458 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 50.8ms TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:50:25,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-10-13 00:50:25,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2021-10-13 00:50:25,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 1.4012738853503184) internal successors, (220), 157 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:25,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 220 transitions. [2021-10-13 00:50:25,465 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 220 transitions. Word has length 47 [2021-10-13 00:50:25,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:50:25,466 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 220 transitions. [2021-10-13 00:50:25,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:25,466 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 220 transitions. [2021-10-13 00:50:25,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-13 00:50:25,467 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:50:25,467 INFO L512 BasicCegarLoop]: trace histogram [6, 5, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:50:25,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc94ca2-79e6-4fe7-a6ee-26feca6e888d/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-13 00:50:25,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc94ca2-79e6-4fe7-a6ee-26feca6e888d/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:50:25,679 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:50:25,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:50:25,679 INFO L82 PathProgramCache]: Analyzing trace with hash 751253453, now seen corresponding path program 1 times [2021-10-13 00:50:25,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:50:25,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853166281] [2021-10-13 00:50:25,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:50:25,679 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:50:25,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:50:26,173 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:50:26,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:50:26,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853166281] [2021-10-13 00:50:26,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853166281] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:50:26,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33035006] [2021-10-13 00:50:26,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:50:26,173 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:50:26,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc94ca2-79e6-4fe7-a6ee-26feca6e888d/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:50:26,174 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc94ca2-79e6-4fe7-a6ee-26feca6e888d/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:50:26,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc94ca2-79e6-4fe7-a6ee-26feca6e888d/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-13 00:50:26,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:50:26,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-13 00:50:26,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:50:26,761 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:50:26,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33035006] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:50:26,761 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:50:26,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-13 00:50:26,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046512149] [2021-10-13 00:50:26,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 00:50:26,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:50:26,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 00:50:26,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-10-13 00:50:26,764 INFO L87 Difference]: Start difference. First operand 158 states and 220 transitions. Second operand has 13 states, 13 states have (on average 7.769230769230769) internal successors, (101), 13 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:27,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:50:27,052 INFO L93 Difference]: Finished difference Result 252 states and 354 transitions. [2021-10-13 00:50:27,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 00:50:27,053 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.769230769230769) internal successors, (101), 13 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-10-13 00:50:27,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:50:27,055 INFO L225 Difference]: With dead ends: 252 [2021-10-13 00:50:27,055 INFO L226 Difference]: Without dead ends: 250 [2021-10-13 00:50:27,056 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 189.9ms TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-10-13 00:50:27,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-10-13 00:50:27,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 248. [2021-10-13 00:50:27,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 1.4008097165991902) internal successors, (346), 247 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:27,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 346 transitions. [2021-10-13 00:50:27,067 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 346 transitions. Word has length 57 [2021-10-13 00:50:27,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:50:27,068 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 346 transitions. [2021-10-13 00:50:27,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.769230769230769) internal successors, (101), 13 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:27,068 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 346 transitions. [2021-10-13 00:50:27,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-10-13 00:50:27,069 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:50:27,070 INFO L512 BasicCegarLoop]: trace histogram [11, 10, 7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:50:27,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc94ca2-79e6-4fe7-a6ee-26feca6e888d/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-13 00:50:27,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc94ca2-79e6-4fe7-a6ee-26feca6e888d/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-13 00:50:27,282 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:50:27,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:50:27,283 INFO L82 PathProgramCache]: Analyzing trace with hash 366250712, now seen corresponding path program 1 times [2021-10-13 00:50:27,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:50:27,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77947941] [2021-10-13 00:50:27,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:50:27,283 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:50:27,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:50:27,816 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 20 proven. 175 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-10-13 00:50:27,817 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:50:27,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77947941] [2021-10-13 00:50:27,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77947941] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:50:27,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338124273] [2021-10-13 00:50:27,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:50:27,817 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:50:27,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc94ca2-79e6-4fe7-a6ee-26feca6e888d/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:50:27,819 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc94ca2-79e6-4fe7-a6ee-26feca6e888d/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:50:27,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc94ca2-79e6-4fe7-a6ee-26feca6e888d/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-13 00:50:28,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:50:28,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 731 conjuncts, 47 conjunts are in the unsatisfiable core [2021-10-13 00:50:28,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:50:29,001 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 20 proven. 219 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:50:29,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338124273] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:50:29,002 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:50:29,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 14] total 19 [2021-10-13 00:50:29,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827636999] [2021-10-13 00:50:29,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 00:50:29,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:50:29,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 00:50:29,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2021-10-13 00:50:29,005 INFO L87 Difference]: Start difference. First operand 248 states and 346 transitions. Second operand has 19 states, 19 states have (on average 8.473684210526315) internal successors, (161), 19 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:29,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:50:29,170 INFO L93 Difference]: Finished difference Result 266 states and 372 transitions. [2021-10-13 00:50:29,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 00:50:29,171 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 8.473684210526315) internal successors, (161), 19 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-10-13 00:50:29,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:50:29,171 INFO L225 Difference]: With dead ends: 266 [2021-10-13 00:50:29,171 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 00:50:29,172 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 98 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 230.4ms TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2021-10-13 00:50:29,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 00:50:29,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 00:50:29,172 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) [2021-10-13 00:50:29,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 00:50:29,173 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 108 [2021-10-13 00:50:29,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:50:29,173 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:50:29,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.473684210526315) internal successors, (161), 19 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:50:29,174 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 00:50:29,174 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 00:50:29,176 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:50:29,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc94ca2-79e6-4fe7-a6ee-26feca6e888d/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-13 00:50:29,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc94ca2-79e6-4fe7-a6ee-26feca6e888d/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-13 00:50:29,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 00:50:29,402 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:50:29,403 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:50:29,453 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:50:29,463 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:50:29,685 INFO L857 garLoopResultBuilder]: For program point L432(lines 432 434) no Hoare annotation was computed. [2021-10-13 00:50:29,685 INFO L857 garLoopResultBuilder]: For program point L300(lines 300 302) no Hoare annotation was computed. [2021-10-13 00:50:29,685 INFO L857 garLoopResultBuilder]: For program point L168(lines 168 170) no Hoare annotation was computed. [2021-10-13 00:50:29,685 INFO L857 garLoopResultBuilder]: For program point L532(lines 532 534) no Hoare annotation was computed. [2021-10-13 00:50:29,685 INFO L857 garLoopResultBuilder]: For program point L400(lines 400 402) no Hoare annotation was computed. [2021-10-13 00:50:29,685 INFO L857 garLoopResultBuilder]: For program point L268(lines 268 270) no Hoare annotation was computed. [2021-10-13 00:50:29,686 INFO L857 garLoopResultBuilder]: For program point L500(lines 500 502) no Hoare annotation was computed. [2021-10-13 00:50:29,686 INFO L857 garLoopResultBuilder]: For program point L368(lines 368 370) no Hoare annotation was computed. [2021-10-13 00:50:29,686 INFO L857 garLoopResultBuilder]: For program point L468(lines 468 470) no Hoare annotation was computed. [2021-10-13 00:50:29,686 INFO L857 garLoopResultBuilder]: For program point L41(lines 41 60) no Hoare annotation was computed. [2021-10-13 00:50:29,686 INFO L857 garLoopResultBuilder]: For program point L42(lines 42 57) no Hoare annotation was computed. [2021-10-13 00:50:29,686 INFO L857 garLoopResultBuilder]: For program point L142(lines 142 157) no Hoare annotation was computed. [2021-10-13 00:50:29,686 INFO L857 garLoopResultBuilder]: For program point L242(lines 242 257) no Hoare annotation was computed. [2021-10-13 00:50:29,686 INFO L857 garLoopResultBuilder]: For program point L110(lines 110 125) no Hoare annotation was computed. [2021-10-13 00:50:29,686 INFO L857 garLoopResultBuilder]: For program point L44(lines 44 55) no Hoare annotation was computed. [2021-10-13 00:50:29,686 INFO L857 garLoopResultBuilder]: For program point L342(lines 342 357) no Hoare annotation was computed. [2021-10-13 00:50:29,686 INFO L857 garLoopResultBuilder]: For program point L210(lines 210 225) no Hoare annotation was computed. [2021-10-13 00:50:29,686 INFO L857 garLoopResultBuilder]: For program point L144(lines 144 155) no Hoare annotation was computed. [2021-10-13 00:50:29,687 INFO L857 garLoopResultBuilder]: For program point L78(lines 78 93) no Hoare annotation was computed. [2021-10-13 00:50:29,687 INFO L857 garLoopResultBuilder]: For program point L442(lines 442 457) no Hoare annotation was computed. [2021-10-13 00:50:29,687 INFO L857 garLoopResultBuilder]: For program point L310(lines 310 325) no Hoare annotation was computed. [2021-10-13 00:50:29,687 INFO L857 garLoopResultBuilder]: For program point L244(lines 244 255) no Hoare annotation was computed. [2021-10-13 00:50:29,687 INFO L857 garLoopResultBuilder]: For program point L178(lines 178 193) no Hoare annotation was computed. [2021-10-13 00:50:29,687 INFO L857 garLoopResultBuilder]: For program point L112(lines 112 123) no Hoare annotation was computed. [2021-10-13 00:50:29,687 INFO L857 garLoopResultBuilder]: For program point L542(lines 542 557) no Hoare annotation was computed. [2021-10-13 00:50:29,687 INFO L857 garLoopResultBuilder]: For program point L410(lines 410 425) no Hoare annotation was computed. [2021-10-13 00:50:29,687 INFO L857 garLoopResultBuilder]: For program point L344(lines 344 355) no Hoare annotation was computed. [2021-10-13 00:50:29,687 INFO L857 garLoopResultBuilder]: For program point L278(lines 278 293) no Hoare annotation was computed. [2021-10-13 00:50:29,688 INFO L857 garLoopResultBuilder]: For program point L212(lines 212 223) no Hoare annotation was computed. [2021-10-13 00:50:29,688 INFO L857 garLoopResultBuilder]: For program point L80(lines 80 91) no Hoare annotation was computed. [2021-10-13 00:50:29,688 INFO L857 garLoopResultBuilder]: For program point L510(lines 510 525) no Hoare annotation was computed. [2021-10-13 00:50:29,688 INFO L857 garLoopResultBuilder]: For program point L444(lines 444 455) no Hoare annotation was computed. [2021-10-13 00:50:29,688 INFO L857 garLoopResultBuilder]: For program point L378(lines 378 393) no Hoare annotation was computed. [2021-10-13 00:50:29,688 INFO L857 garLoopResultBuilder]: For program point L312(lines 312 323) no Hoare annotation was computed. [2021-10-13 00:50:29,688 INFO L857 garLoopResultBuilder]: For program point L180(lines 180 191) no Hoare annotation was computed. [2021-10-13 00:50:29,688 INFO L857 garLoopResultBuilder]: For program point L48(lines 48 50) no Hoare annotation was computed. [2021-10-13 00:50:29,688 INFO L857 garLoopResultBuilder]: For program point L544(lines 544 555) no Hoare annotation was computed. [2021-10-13 00:50:29,688 INFO L857 garLoopResultBuilder]: For program point L478(lines 478 493) no Hoare annotation was computed. [2021-10-13 00:50:29,688 INFO L857 garLoopResultBuilder]: For program point L412(lines 412 423) no Hoare annotation was computed. [2021-10-13 00:50:29,689 INFO L857 garLoopResultBuilder]: For program point L280(lines 280 291) no Hoare annotation was computed. [2021-10-13 00:50:29,689 INFO L857 garLoopResultBuilder]: For program point L148(lines 148 150) no Hoare annotation was computed. [2021-10-13 00:50:29,689 INFO L860 garLoopResultBuilder]: At program point L16(lines 16 568) the Hoare annotation is: true [2021-10-13 00:50:29,689 INFO L857 garLoopResultBuilder]: For program point L512(lines 512 523) no Hoare annotation was computed. [2021-10-13 00:50:29,689 INFO L857 garLoopResultBuilder]: For program point L380(lines 380 391) no Hoare annotation was computed. [2021-10-13 00:50:29,689 INFO L857 garLoopResultBuilder]: For program point L248(lines 248 250) no Hoare annotation was computed. [2021-10-13 00:50:29,689 INFO L857 garLoopResultBuilder]: For program point L116(lines 116 118) no Hoare annotation was computed. [2021-10-13 00:50:29,689 INFO L857 garLoopResultBuilder]: For program point L480(lines 480 491) no Hoare annotation was computed. [2021-10-13 00:50:29,689 INFO L857 garLoopResultBuilder]: For program point L348(lines 348 350) no Hoare annotation was computed. [2021-10-13 00:50:29,690 INFO L857 garLoopResultBuilder]: For program point L216(lines 216 218) no Hoare annotation was computed. [2021-10-13 00:50:29,690 INFO L857 garLoopResultBuilder]: For program point L84(lines 84 86) no Hoare annotation was computed. [2021-10-13 00:50:29,690 INFO L857 garLoopResultBuilder]: For program point L448(lines 448 450) no Hoare annotation was computed. [2021-10-13 00:50:29,690 INFO L857 garLoopResultBuilder]: For program point L316(lines 316 318) no Hoare annotation was computed. [2021-10-13 00:50:29,690 INFO L857 garLoopResultBuilder]: For program point L184(lines 184 186) no Hoare annotation was computed. [2021-10-13 00:50:29,690 INFO L857 garLoopResultBuilder]: For program point L548(lines 548 550) no Hoare annotation was computed. [2021-10-13 00:50:29,690 INFO L857 garLoopResultBuilder]: For program point L416(lines 416 418) no Hoare annotation was computed. [2021-10-13 00:50:29,690 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 00:50:29,690 INFO L857 garLoopResultBuilder]: For program point L284(lines 284 286) no Hoare annotation was computed. [2021-10-13 00:50:29,690 INFO L853 garLoopResultBuilder]: At program point L549(lines 16 568) the Hoare annotation is: false [2021-10-13 00:50:29,691 INFO L857 garLoopResultBuilder]: For program point L516(lines 516 518) no Hoare annotation was computed. [2021-10-13 00:50:29,691 INFO L857 garLoopResultBuilder]: For program point L384(lines 384 386) no Hoare annotation was computed. [2021-10-13 00:50:29,691 INFO L857 garLoopResultBuilder]: For program point L484(lines 484 486) no Hoare annotation was computed. [2021-10-13 00:50:29,691 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 00:50:29,691 INFO L853 garLoopResultBuilder]: At program point L26-2(lines 26 563) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~this_buffer_empty~0 0))) (or (and (<= 0 (+ ULTIMATE.start_main_~P8~0 2147483648)) (<= 5 ULTIMATE.start_main_~q~0) .cse0 (<= ULTIMATE.start_main_~this_expect~0 (+ 2 (* 2 (div (+ (- 2) ULTIMATE.start_main_~this_expect~0) 2)))) (<= ULTIMATE.start_main_~P8~0 2147483647)) (and .cse0 (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~this_expect~0 0)))) [2021-10-13 00:50:29,691 INFO L857 garLoopResultBuilder]: For program point L26-3(lines 26 563) no Hoare annotation was computed. [2021-10-13 00:50:29,691 INFO L857 garLoopResultBuilder]: For program point L126(lines 126 141) no Hoare annotation was computed. [2021-10-13 00:50:29,691 INFO L857 garLoopResultBuilder]: For program point L226(lines 226 241) no Hoare annotation was computed. [2021-10-13 00:50:29,691 INFO L857 garLoopResultBuilder]: For program point L94(lines 94 109) no Hoare annotation was computed. [2021-10-13 00:50:29,691 INFO L857 garLoopResultBuilder]: For program point L61(lines 61 160) no Hoare annotation was computed. [2021-10-13 00:50:29,691 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 00:50:29,692 INFO L857 garLoopResultBuilder]: For program point L326(lines 326 341) no Hoare annotation was computed. [2021-10-13 00:50:29,692 INFO L857 garLoopResultBuilder]: For program point L194(lines 194 209) no Hoare annotation was computed. [2021-10-13 00:50:29,692 INFO L857 garLoopResultBuilder]: For program point L161(lines 161 260) no Hoare annotation was computed. [2021-10-13 00:50:29,692 INFO L857 garLoopResultBuilder]: For program point L128(lines 128 139) no Hoare annotation was computed. [2021-10-13 00:50:29,692 INFO L857 garLoopResultBuilder]: For program point L62(lines 62 77) no Hoare annotation was computed. [2021-10-13 00:50:29,692 INFO L857 garLoopResultBuilder]: For program point L426(lines 426 441) no Hoare annotation was computed. [2021-10-13 00:50:29,692 INFO L857 garLoopResultBuilder]: For program point L294(lines 294 309) no Hoare annotation was computed. [2021-10-13 00:50:29,692 INFO L857 garLoopResultBuilder]: For program point L261(lines 261 360) no Hoare annotation was computed. [2021-10-13 00:50:29,692 INFO L857 garLoopResultBuilder]: For program point L228(lines 228 239) no Hoare annotation was computed. [2021-10-13 00:50:29,692 INFO L857 garLoopResultBuilder]: For program point L162(lines 162 177) no Hoare annotation was computed. [2021-10-13 00:50:29,692 INFO L857 garLoopResultBuilder]: For program point L96(lines 96 107) no Hoare annotation was computed. [2021-10-13 00:50:29,692 INFO L853 garLoopResultBuilder]: At program point L559(lines 26 563) the Hoare annotation is: (let ((.cse2 (= ULTIMATE.start_main_~this_buffer_empty~0 1)) (.cse0 (<= ULTIMATE.start_main_~this_expect~0 (+ (* 2 (div (+ (- 1) ULTIMATE.start_main_~this_expect~0) 2)) 1))) (.cse1 (<= 0 (+ ULTIMATE.start_main_~P8~0 2147483648))) (.cse4 (<= ULTIMATE.start_main_~this_expect~0 (+ 2 (* 2 (div (+ (- 2) ULTIMATE.start_main_~this_expect~0) 2))))) (.cse3 (<= ULTIMATE.start_main_~P8~0 2147483647)) (.cse5 (= ULTIMATE.start_main_~this_buffer_empty~0 0))) (or (and .cse0 (= ULTIMATE.start_main_~q~0 4) .cse1 .cse2 .cse3) (and .cse1 .cse2 .cse4 .cse3 (= ULTIMATE.start_main_~q~0 1)) (and .cse0 .cse1 .cse5 .cse3 (= ULTIMATE.start_main_~q~0 3)) (and .cse1 (<= 5 ULTIMATE.start_main_~q~0) .cse5 .cse4 .cse3) (and .cse5 (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~this_expect~0 0)))) [2021-10-13 00:50:29,692 INFO L857 garLoopResultBuilder]: For program point L526(lines 526 541) no Hoare annotation was computed. [2021-10-13 00:50:29,693 INFO L857 garLoopResultBuilder]: For program point L394(lines 394 409) no Hoare annotation was computed. [2021-10-13 00:50:29,693 INFO L857 garLoopResultBuilder]: For program point L361(lines 361 460) no Hoare annotation was computed. [2021-10-13 00:50:29,693 INFO L857 garLoopResultBuilder]: For program point L328(lines 328 339) no Hoare annotation was computed. [2021-10-13 00:50:29,693 INFO L857 garLoopResultBuilder]: For program point L262(lines 262 277) no Hoare annotation was computed. [2021-10-13 00:50:29,693 INFO L857 garLoopResultBuilder]: For program point L196(lines 196 207) no Hoare annotation was computed. [2021-10-13 00:50:29,693 INFO L857 garLoopResultBuilder]: For program point L64(lines 64 75) no Hoare annotation was computed. [2021-10-13 00:50:29,693 INFO L857 garLoopResultBuilder]: For program point L494(lines 494 509) no Hoare annotation was computed. [2021-10-13 00:50:29,693 INFO L857 garLoopResultBuilder]: For program point L461(lines 461 560) no Hoare annotation was computed. [2021-10-13 00:50:29,693 INFO L857 garLoopResultBuilder]: For program point L428(lines 428 439) no Hoare annotation was computed. [2021-10-13 00:50:29,693 INFO L857 garLoopResultBuilder]: For program point L362(lines 362 377) no Hoare annotation was computed. [2021-10-13 00:50:29,693 INFO L857 garLoopResultBuilder]: For program point L296(lines 296 307) no Hoare annotation was computed. [2021-10-13 00:50:29,693 INFO L857 garLoopResultBuilder]: For program point L164(lines 164 175) no Hoare annotation was computed. [2021-10-13 00:50:29,693 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 00:50:29,693 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 567) no Hoare annotation was computed. [2021-10-13 00:50:29,693 INFO L857 garLoopResultBuilder]: For program point L528(lines 528 539) no Hoare annotation was computed. [2021-10-13 00:50:29,694 INFO L857 garLoopResultBuilder]: For program point L462(lines 462 477) no Hoare annotation was computed. [2021-10-13 00:50:29,694 INFO L857 garLoopResultBuilder]: For program point L396(lines 396 407) no Hoare annotation was computed. [2021-10-13 00:50:29,694 INFO L857 garLoopResultBuilder]: For program point L264(lines 264 275) no Hoare annotation was computed. [2021-10-13 00:50:29,694 INFO L857 garLoopResultBuilder]: For program point L132(lines 132 134) no Hoare annotation was computed. [2021-10-13 00:50:29,694 INFO L857 garLoopResultBuilder]: For program point L496(lines 496 507) no Hoare annotation was computed. [2021-10-13 00:50:29,694 INFO L857 garLoopResultBuilder]: For program point L364(lines 364 375) no Hoare annotation was computed. [2021-10-13 00:50:29,694 INFO L857 garLoopResultBuilder]: For program point L232(lines 232 234) no Hoare annotation was computed. [2021-10-13 00:50:29,694 INFO L857 garLoopResultBuilder]: For program point L100(lines 100 102) no Hoare annotation was computed. [2021-10-13 00:50:29,694 INFO L857 garLoopResultBuilder]: For program point L464(lines 464 475) no Hoare annotation was computed. [2021-10-13 00:50:29,694 INFO L857 garLoopResultBuilder]: For program point L332(lines 332 334) no Hoare annotation was computed. [2021-10-13 00:50:29,694 INFO L857 garLoopResultBuilder]: For program point L200(lines 200 202) no Hoare annotation was computed. [2021-10-13 00:50:29,694 INFO L857 garLoopResultBuilder]: For program point L68(lines 68 70) no Hoare annotation was computed. [2021-10-13 00:50:29,705 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:50:29,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:50:29 BoogieIcfgContainer [2021-10-13 00:50:29,744 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:50:29,745 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:50:29,745 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:50:29,745 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:50:29,746 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:50:21" (3/4) ... [2021-10-13 00:50:29,748 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 00:50:29,775 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-13 00:50:29,777 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 00:50:29,777 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 00:50:29,777 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 00:50:29,813 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc94ca2-79e6-4fe7-a6ee-26feca6e888d/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 00:50:29,813 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:50:29,814 INFO L168 Benchmark]: Toolchain (without parser) took 10523.83 ms. Allocated memory was 81.8 MB in the beginning and 136.3 MB in the end (delta: 54.5 MB). Free memory was 47.0 MB in the beginning and 73.9 MB in the end (delta: -26.9 MB). Peak memory consumption was 27.0 MB. Max. memory is 16.1 GB. [2021-10-13 00:50:29,815 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 81.8 MB. Free memory was 54.4 MB in the beginning and 54.4 MB in the end (delta: 24.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:50:29,816 INFO L168 Benchmark]: CACSL2BoogieTranslator took 534.75 ms. Allocated memory was 81.8 MB in the beginning and 109.1 MB in the end (delta: 27.3 MB). Free memory was 46.7 MB in the beginning and 75.8 MB in the end (delta: -29.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:50:29,816 INFO L168 Benchmark]: Boogie Procedure Inliner took 122.64 ms. Allocated memory is still 109.1 MB. Free memory was 75.8 MB in the beginning and 71.1 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 00:50:29,817 INFO L168 Benchmark]: Boogie Preprocessor took 101.76 ms. Allocated memory is still 109.1 MB. Free memory was 71.1 MB in the beginning and 68.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:50:29,817 INFO L168 Benchmark]: RCFGBuilder took 1036.24 ms. Allocated memory is still 109.1 MB. Free memory was 68.0 MB in the beginning and 81.6 MB in the end (delta: -13.6 MB). Peak memory consumption was 38.8 MB. Max. memory is 16.1 GB. [2021-10-13 00:50:29,817 INFO L168 Benchmark]: TraceAbstraction took 8648.88 ms. Allocated memory was 109.1 MB in the beginning and 136.3 MB in the end (delta: 27.3 MB). Free memory was 81.0 MB in the beginning and 76.0 MB in the end (delta: 5.0 MB). Peak memory consumption was 30.7 MB. Max. memory is 16.1 GB. [2021-10-13 00:50:29,818 INFO L168 Benchmark]: Witness Printer took 68.07 ms. Allocated memory is still 136.3 MB. Free memory was 76.0 MB in the beginning and 73.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:50:29,820 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 81.8 MB. Free memory was 54.4 MB in the beginning and 54.4 MB in the end (delta: 24.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 534.75 ms. Allocated memory was 81.8 MB in the beginning and 109.1 MB in the end (delta: 27.3 MB). Free memory was 46.7 MB in the beginning and 75.8 MB in the end (delta: -29.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 122.64 ms. Allocated memory is still 109.1 MB. Free memory was 75.8 MB in the beginning and 71.1 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 101.76 ms. Allocated memory is still 109.1 MB. Free memory was 71.1 MB in the beginning and 68.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1036.24 ms. Allocated memory is still 109.1 MB. Free memory was 68.0 MB in the beginning and 81.6 MB in the end (delta: -13.6 MB). Peak memory consumption was 38.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8648.88 ms. Allocated memory was 109.1 MB in the beginning and 136.3 MB in the end (delta: 27.3 MB). Free memory was 81.0 MB in the beginning and 76.0 MB in the end (delta: 5.0 MB). Peak memory consumption was 30.7 MB. Max. memory is 16.1 GB. * Witness Printer took 68.07 ms. Allocated memory is still 136.3 MB. Free memory was 76.0 MB in the beginning and 73.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms 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: 567]: 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, 109 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8537.7ms, OverallIterations: 14, TraceHistogramMax: 11, EmptinessCheckTime: 29.2ms, AutomataDifference: 1673.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 287.0ms, InitialAbstractionConstructionTime: 13.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2194 SDtfs, 2169 SDslu, 4497 SDs, 0 SdLazy, 686 SolverSat, 166 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 981.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 334 GetRequests, 267 SyntacticMatches, 5 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 635.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=295occurred in iteration=7, InterpolantAutomatonStates: 81, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 177.4ms AutomataMinimizationTime, 14 MinimizatonAttempts, 75 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 24 NumberOfFragments, 154 HoareAnnotationTreeSize, 4 FomulaSimplifications, 843 FormulaSimplificationTreeSizeReduction, 63.1ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 414 FormulaSimplificationTreeSizeReductionInter, 217.3ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 147.0ms SsaConstructionTime, 1055.0ms SatisfiabilityAnalysisTime, 3431.7ms InterpolantComputationTime, 736 NumberOfCodeBlocks, 736 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 717 ConstructedInterpolants, 0 QuantifiedInterpolants, 5648 SizeOfPredicates, 16 NumberOfNonLiveVariables, 1920 ConjunctsInSsa, 109 ConjunctsInUnsatCore, 19 InterpolantComputations, 10 PerfectInterpolantSequences, 238/766 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: 16]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: (((((((this_expect <= 2 * ((-1 + this_expect) / 2) + 1 && q == 4) && 0 <= P8 + 2147483648) && this_buffer_empty == 1) && P8 <= 2147483647) || ((((0 <= P8 + 2147483648 && this_buffer_empty == 1) && this_expect <= 2 + 2 * ((-2 + this_expect) / 2)) && P8 <= 2147483647) && q == 1)) || ((((this_expect <= 2 * ((-1 + this_expect) / 2) + 1 && 0 <= P8 + 2147483648) && this_buffer_empty == 0) && P8 <= 2147483647) && q == 3)) || ((((0 <= P8 + 2147483648 && 5 <= q) && this_buffer_empty == 0) && this_expect <= 2 + 2 * ((-2 + this_expect) / 2)) && P8 <= 2147483647)) || ((this_buffer_empty == 0 && q == 0) && this_expect == 0) - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: ((((0 <= P8 + 2147483648 && 5 <= q) && this_buffer_empty == 0) && this_expect <= 2 + 2 * ((-2 + this_expect) / 2)) && P8 <= 2147483647) || ((this_buffer_empty == 0 && q == 0) && this_expect == 0) - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2021-10-13 00:50:29,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc94ca2-79e6-4fe7-a6ee-26feca6e888d/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...