./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/mult_array-alloca-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/mult_array-alloca-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 516828c2d0e4e4ea6fd7a5826d09ca378c2c75a9f8159cf96c4b4e28ff76714b ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:43:04,941 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:43:04,944 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:43:04,981 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:43:04,982 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:43:04,984 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:43:04,986 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:43:04,989 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:43:04,992 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:43:04,993 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:43:04,995 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:43:04,997 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:43:04,998 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:43:04,999 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:43:05,002 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:43:05,004 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:43:05,005 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:43:05,007 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:43:05,010 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:43:05,013 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:43:05,016 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:43:05,018 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:43:05,020 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:43:05,022 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:43:05,026 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:43:05,027 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:43:05,028 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:43:05,029 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:43:05,030 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:43:05,032 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:43:05,032 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:43:05,034 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:43:05,035 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:43:05,036 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:43:05,038 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:43:05,039 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:43:05,040 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:43:05,041 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:43:05,041 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:43:05,043 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:43:05,044 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:43:05,045 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-28 23:43:05,075 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:43:05,075 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:43:05,076 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:43:05,076 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:43:05,077 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:43:05,078 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:43:05,078 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:43:05,078 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:43:05,079 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:43:05,079 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:43:05,079 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:43:05,080 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:43:05,080 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:43:05,080 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 23:43:05,080 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 23:43:05,081 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 23:43:05,081 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:43:05,081 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 23:43:05,082 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:43:05,082 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:43:05,082 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:43:05,082 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:43:05,083 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:43:05,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:43:05,083 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:43:05,084 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:43:05,084 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:43:05,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:43:05,085 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:43:05,085 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_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 516828c2d0e4e4ea6fd7a5826d09ca378c2c75a9f8159cf96c4b4e28ff76714b [2021-10-28 23:43:05,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:43:05,419 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:43:05,424 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:43:05,426 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:43:05,429 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:43:05,430 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/array-memsafety/mult_array-alloca-1.i [2021-10-28 23:43:05,515 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/data/b2469e422/f3f70d1a316a4b6db9c75211030dfbd8/FLAG49402bc67 [2021-10-28 23:43:06,152 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:43:06,152 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/sv-benchmarks/c/array-memsafety/mult_array-alloca-1.i [2021-10-28 23:43:06,190 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/data/b2469e422/f3f70d1a316a4b6db9c75211030dfbd8/FLAG49402bc67 [2021-10-28 23:43:06,420 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/data/b2469e422/f3f70d1a316a4b6db9c75211030dfbd8 [2021-10-28 23:43:06,423 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:43:06,425 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 23:43:06,428 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:43:06,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:43:06,433 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:43:06,445 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:43:06" (1/1) ... [2021-10-28 23:43:06,446 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@323f271 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:43:06, skipping insertion in model container [2021-10-28 23:43:06,446 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:43:06" (1/1) ... [2021-10-28 23:43:06,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:43:06,527 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:43:06,872 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:43:06,893 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:43:06,986 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:43:07,026 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:43:07,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:43:07 WrapperNode [2021-10-28 23:43:07,027 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:43:07,028 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:43:07,028 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:43:07,029 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:43:07,042 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:43:07" (1/1) ... [2021-10-28 23:43:07,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:43:07" (1/1) ... [2021-10-28 23:43:07,058 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:43:07" (1/1) ... [2021-10-28 23:43:07,059 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:43:07" (1/1) ... [2021-10-28 23:43:07,075 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:43:07" (1/1) ... [2021-10-28 23:43:07,080 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:43:07" (1/1) ... [2021-10-28 23:43:07,084 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:43:07" (1/1) ... [2021-10-28 23:43:07,091 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:43:07,092 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:43:07,093 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:43:07,093 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:43:07,094 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:43:07" (1/1) ... [2021-10-28 23:43:07,104 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:43:07,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:43:07,135 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:43:07,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:43:07,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 23:43:07,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:43:07,197 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-10-28 23:43:07,197 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-10-28 23:43:07,197 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-10-28 23:43:07,198 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-10-28 23:43:07,198 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-10-28 23:43:07,198 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 23:43:07,199 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 23:43:07,199 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 23:43:07,199 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 23:43:07,199 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 23:43:07,200 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 23:43:07,200 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 23:43:07,200 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 23:43:07,200 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 23:43:07,201 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 23:43:07,201 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 23:43:07,201 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 23:43:07,201 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 23:43:07,202 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 23:43:07,202 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 23:43:07,202 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 23:43:07,202 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 23:43:07,203 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-10-28 23:43:07,203 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-10-28 23:43:07,203 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-10-28 23:43:07,203 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-10-28 23:43:07,204 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-10-28 23:43:07,204 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 23:43:07,204 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 23:43:07,204 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 23:43:07,205 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 23:43:07,205 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 23:43:07,205 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 23:43:07,205 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 23:43:07,206 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 23:43:07,206 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 23:43:07,206 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 23:43:07,206 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 23:43:07,207 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 23:43:07,207 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 23:43:07,207 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 23:43:07,208 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 23:43:07,208 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 23:43:07,208 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 23:43:07,208 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 23:43:07,209 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 23:43:07,209 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 23:43:07,209 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 23:43:07,209 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 23:43:07,209 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 23:43:07,210 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 23:43:07,210 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 23:43:07,210 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 23:43:07,210 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 23:43:07,211 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 23:43:07,211 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 23:43:07,211 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 23:43:07,211 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 23:43:07,212 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 23:43:07,212 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 23:43:07,212 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 23:43:07,212 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 23:43:07,213 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 23:43:07,213 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 23:43:07,213 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 23:43:07,213 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 23:43:07,214 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 23:43:07,214 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 23:43:07,214 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 23:43:07,214 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 23:43:07,215 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 23:43:07,215 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 23:43:07,215 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 23:43:07,215 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 23:43:07,215 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 23:43:07,216 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 23:43:07,216 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 23:43:07,216 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 23:43:07,216 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 23:43:07,217 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 23:43:07,217 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 23:43:07,217 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 23:43:07,217 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 23:43:07,217 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 23:43:07,218 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 23:43:07,218 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 23:43:07,218 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 23:43:07,218 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 23:43:07,219 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 23:43:07,219 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 23:43:07,219 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 23:43:07,219 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 23:43:07,219 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 23:43:07,220 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 23:43:07,220 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 23:43:07,220 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 23:43:07,220 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 23:43:07,221 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 23:43:07,221 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 23:43:07,221 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 23:43:07,221 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 23:43:07,221 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 23:43:07,222 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 23:43:07,222 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 23:43:07,222 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 23:43:07,223 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 23:43:07,223 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 23:43:07,223 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 23:43:07,223 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 23:43:07,224 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 23:43:07,224 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 23:43:07,224 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 23:43:07,224 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 23:43:07,225 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 23:43:07,225 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 23:43:07,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:43:07,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:43:07,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 23:43:07,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 23:43:07,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 23:43:07,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:43:07,774 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:43:07,774 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-10-28 23:43:07,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:43:07 BoogieIcfgContainer [2021-10-28 23:43:07,777 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:43:07,780 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:43:07,780 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:43:07,800 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:43:07,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:43:06" (1/3) ... [2021-10-28 23:43:07,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c344a63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:43:07, skipping insertion in model container [2021-10-28 23:43:07,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:43:07" (2/3) ... [2021-10-28 23:43:07,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c344a63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:43:07, skipping insertion in model container [2021-10-28 23:43:07,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:43:07" (3/3) ... [2021-10-28 23:43:07,805 INFO L111 eAbstractionObserver]: Analyzing ICFG mult_array-alloca-1.i [2021-10-28 23:43:07,811 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:43:07,811 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-10-28 23:43:07,866 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:43:07,874 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 23:43:07,874 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-28 23:43:07,892 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 28 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 23:43:07,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 23:43:07,901 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:43:07,902 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:43:07,903 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr6ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-10-28 23:43:07,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:43:07,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1489715982, now seen corresponding path program 1 times [2021-10-28 23:43:07,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:43:07,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643340009] [2021-10-28 23:43:07,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:43:07,923 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:43:08,031 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:43:08,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1760957082] [2021-10-28 23:43:08,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:43:08,032 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:43:08,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:43:08,045 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:43:08,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 23:43:08,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:43:08,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 23:43:08,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:43:08,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:43:08,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:43:08,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643340009] [2021-10-28 23:43:08,498 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:43:08,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760957082] [2021-10-28 23:43:08,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760957082] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:43:08,499 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:43:08,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:43:08,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829586151] [2021-10-28 23:43:08,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:43:08,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:43:08,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:43:08,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:43:08,526 INFO L87 Difference]: Start difference. First operand has 33 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 28 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:43:08,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:43:08,609 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2021-10-28 23:43:08,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:43:08,612 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-10-28 23:43:08,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:43:08,624 INFO L225 Difference]: With dead ends: 33 [2021-10-28 23:43:08,624 INFO L226 Difference]: Without dead ends: 30 [2021-10-28 23:43:08,626 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:43:08,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-28 23:43:08,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-10-28 23:43:08,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.5) internal successors, (30), 26 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:43:08,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2021-10-28 23:43:08,668 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 12 [2021-10-28 23:43:08,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:43:08,668 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2021-10-28 23:43:08,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:43:08,669 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2021-10-28 23:43:08,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 23:43:08,670 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:43:08,671 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:43:08,710 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-28 23:43:08,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-28 23:43:08,894 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-10-28 23:43:08,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:43:08,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1063444840, now seen corresponding path program 1 times [2021-10-28 23:43:08,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:43:08,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333328677] [2021-10-28 23:43:08,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:43:08,897 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:43:08,916 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:43:08,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1076388069] [2021-10-28 23:43:08,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:43:08,917 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:43:08,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:43:08,922 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:43:08,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 23:43:09,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:43:09,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:43:09,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:43:09,179 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-28 23:43:09,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2021-10-28 23:43:09,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:43:09,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:43:09,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333328677] [2021-10-28 23:43:09,227 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:43:09,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076388069] [2021-10-28 23:43:09,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076388069] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:43:09,231 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:43:09,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 23:43:09,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191236897] [2021-10-28 23:43:09,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:43:09,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:43:09,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:43:09,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:43:09,238 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:43:09,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:43:09,287 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2021-10-28 23:43:09,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:43:09,288 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-10-28 23:43:09,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:43:09,291 INFO L225 Difference]: With dead ends: 28 [2021-10-28 23:43:09,291 INFO L226 Difference]: Without dead ends: 28 [2021-10-28 23:43:09,292 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:43:09,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-28 23:43:09,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-28 23:43:09,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.4) internal successors, (28), 24 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:43:09,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2021-10-28 23:43:09,302 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 13 [2021-10-28 23:43:09,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:43:09,303 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2021-10-28 23:43:09,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:43:09,304 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2021-10-28 23:43:09,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 23:43:09,305 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:43:09,305 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:43:09,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:43:09,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:43:09,533 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-10-28 23:43:09,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:43:09,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1063444839, now seen corresponding path program 1 times [2021-10-28 23:43:09,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:43:09,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442225686] [2021-10-28 23:43:09,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:43:09,535 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:43:09,551 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:43:09,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [533169091] [2021-10-28 23:43:09,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:43:09,561 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:43:09,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:43:09,563 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:43:09,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 23:43:09,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:43:09,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 23:43:09,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:43:09,852 INFO L354 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2021-10-28 23:43:09,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2021-10-28 23:43:09,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 35 [2021-10-28 23:43:10,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:43:10,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:43:10,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442225686] [2021-10-28 23:43:10,305 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:43:10,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533169091] [2021-10-28 23:43:10,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533169091] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:43:10,306 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:43:10,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:43:10,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855696844] [2021-10-28 23:43:10,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:43:10,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:43:10,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:43:10,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:43:10,309 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:43:10,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:43:10,518 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2021-10-28 23:43:10,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:43:10,521 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-10-28 23:43:10,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:43:10,522 INFO L225 Difference]: With dead ends: 32 [2021-10-28 23:43:10,522 INFO L226 Difference]: Without dead ends: 32 [2021-10-28 23:43:10,522 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:43:10,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-28 23:43:10,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2021-10-28 23:43:10,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 26 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:43:10,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2021-10-28 23:43:10,528 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 13 [2021-10-28 23:43:10,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:43:10,528 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2021-10-28 23:43:10,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:43:10,529 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2021-10-28 23:43:10,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 23:43:10,532 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:43:10,532 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:43:10,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-28 23:43:10,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-10-28 23:43:10,753 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-10-28 23:43:10,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:43:10,754 INFO L85 PathProgramCache]: Analyzing trace with hash -650126436, now seen corresponding path program 1 times [2021-10-28 23:43:10,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:43:10,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561195758] [2021-10-28 23:43:10,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:43:10,755 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:43:10,769 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:43:10,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1998631467] [2021-10-28 23:43:10,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:43:10,770 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:43:10,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:43:10,772 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:43:10,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-28 23:43:10,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:43:10,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:43:10,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:43:11,033 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:43:11,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:43:11,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561195758] [2021-10-28 23:43:11,034 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:43:11,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998631467] [2021-10-28 23:43:11,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998631467] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:43:11,034 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:43:11,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:43:11,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54982041] [2021-10-28 23:43:11,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:43:11,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:43:11,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:43:11,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:43:11,037 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:43:11,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:43:11,149 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2021-10-28 23:43:11,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:43:11,150 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-10-28 23:43:11,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:43:11,151 INFO L225 Difference]: With dead ends: 51 [2021-10-28 23:43:11,151 INFO L226 Difference]: Without dead ends: 51 [2021-10-28 23:43:11,152 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:43:11,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-28 23:43:11,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 39. [2021-10-28 23:43:11,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 35 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:43:11,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2021-10-28 23:43:11,162 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 17 [2021-10-28 23:43:11,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:43:11,165 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2021-10-28 23:43:11,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:43:11,165 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2021-10-28 23:43:11,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 23:43:11,166 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:43:11,167 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:43:11,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-28 23:43:11,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:43:11,393 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-10-28 23:43:11,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:43:11,394 INFO L85 PathProgramCache]: Analyzing trace with hash 50938142, now seen corresponding path program 1 times [2021-10-28 23:43:11,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:43:11,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605425545] [2021-10-28 23:43:11,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:43:11,395 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:43:11,423 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:43:11,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [896175367] [2021-10-28 23:43:11,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:43:11,424 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:43:11,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:43:11,441 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:43:11,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-28 23:43:11,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:43:11,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 23:43:11,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:43:11,659 INFO L354 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2021-10-28 23:43:11,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2021-10-28 23:43:11,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2021-10-28 23:43:12,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:43:12,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:43:12,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605425545] [2021-10-28 23:43:12,143 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:43:12,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896175367] [2021-10-28 23:43:12,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896175367] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:43:12,146 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 23:43:12,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-28 23:43:12,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326722988] [2021-10-28 23:43:12,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:43:12,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:43:12,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:43:12,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:43:12,151 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:43:12,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:43:12,820 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2021-10-28 23:43:12,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:43:12,821 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-10-28 23:43:12,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:43:12,822 INFO L225 Difference]: With dead ends: 40 [2021-10-28 23:43:12,822 INFO L226 Difference]: Without dead ends: 40 [2021-10-28 23:43:12,823 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:43:12,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-10-28 23:43:12,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2021-10-28 23:43:12,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 33 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:43:12,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2021-10-28 23:43:12,829 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 17 [2021-10-28 23:43:12,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:43:12,830 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2021-10-28 23:43:12,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:43:12,830 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2021-10-28 23:43:12,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 23:43:12,831 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:43:12,832 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:43:12,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-28 23:43:13,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:43:13,045 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr3REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-10-28 23:43:13,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:43:13,046 INFO L85 PathProgramCache]: Analyzing trace with hash -2001298264, now seen corresponding path program 1 times [2021-10-28 23:43:13,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:43:13,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689547801] [2021-10-28 23:43:13,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:43:13,047 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:43:13,076 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:43:13,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1663441869] [2021-10-28 23:43:13,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:43:13,077 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:43:13,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:43:13,078 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:43:13,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-28 23:43:13,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:43:13,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 23:43:13,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:43:13,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:43:13,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:43:13,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689547801] [2021-10-28 23:43:13,518 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:43:13,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663441869] [2021-10-28 23:43:13,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663441869] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:43:13,519 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:43:13,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 23:43:13,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073701257] [2021-10-28 23:43:13,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:43:13,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:43:13,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:43:13,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:43:13,521 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:43:13,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:43:13,596 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2021-10-28 23:43:13,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:43:13,596 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-10-28 23:43:13,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:43:13,597 INFO L225 Difference]: With dead ends: 48 [2021-10-28 23:43:13,598 INFO L226 Difference]: Without dead ends: 48 [2021-10-28 23:43:13,598 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:43:13,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-10-28 23:43:13,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 43. [2021-10-28 23:43:13,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 39 states have internal predecessors, (47), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:43:13,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2021-10-28 23:43:13,604 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 19 [2021-10-28 23:43:13,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:43:13,605 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2021-10-28 23:43:13,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:43:13,605 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2021-10-28 23:43:13,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 23:43:13,606 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:43:13,607 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:43:13,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-28 23:43:13,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-28 23:43:13,829 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr3REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-10-28 23:43:13,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:43:13,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1706863018, now seen corresponding path program 1 times [2021-10-28 23:43:13,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:43:13,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496272992] [2021-10-28 23:43:13,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:43:13,831 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:43:13,843 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:43:13,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1784751669] [2021-10-28 23:43:13,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:43:13,844 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:43:13,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:43:13,851 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:43:13,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-28 23:43:14,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:43:14,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 23:43:14,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:43:14,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:43:14,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:43:14,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496272992] [2021-10-28 23:43:14,269 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:43:14,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784751669] [2021-10-28 23:43:14,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784751669] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:43:14,270 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:43:14,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 23:43:14,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528479249] [2021-10-28 23:43:14,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:43:14,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:43:14,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:43:14,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:43:14,273 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:43:14,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:43:14,705 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2021-10-28 23:43:14,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:43:14,705 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-10-28 23:43:14,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:43:14,706 INFO L225 Difference]: With dead ends: 45 [2021-10-28 23:43:14,706 INFO L226 Difference]: Without dead ends: 45 [2021-10-28 23:43:14,707 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:43:14,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-10-28 23:43:14,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 36. [2021-10-28 23:43:14,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 32 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:43:14,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2021-10-28 23:43:14,713 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 19 [2021-10-28 23:43:14,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:43:14,713 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2021-10-28 23:43:14,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:43:14,713 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2021-10-28 23:43:14,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 23:43:14,714 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:43:14,715 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:43:14,745 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-10-28 23:43:14,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-10-28 23:43:14,925 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr6ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-10-28 23:43:14,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:43:14,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1910705585, now seen corresponding path program 1 times [2021-10-28 23:43:14,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:43:14,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460524841] [2021-10-28 23:43:14,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:43:14,926 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:43:14,938 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:43:14,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [94063459] [2021-10-28 23:43:14,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:43:14,939 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:43:14,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:43:14,940 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:43:14,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-28 23:43:15,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:43:15,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 23:43:15,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:43:15,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 23:43:15,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:43:15,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460524841] [2021-10-28 23:43:15,364 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:43:15,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94063459] [2021-10-28 23:43:15,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94063459] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:43:15,365 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:43:15,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:43:15,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070809811] [2021-10-28 23:43:15,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:43:15,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:43:15,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:43:15,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:43:15,367 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:43:15,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:43:15,425 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2021-10-28 23:43:15,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:43:15,425 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-10-28 23:43:15,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:43:15,426 INFO L225 Difference]: With dead ends: 35 [2021-10-28 23:43:15,426 INFO L226 Difference]: Without dead ends: 33 [2021-10-28 23:43:15,427 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:43:15,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-28 23:43:15,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-10-28 23:43:15,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 29 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:43:15,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2021-10-28 23:43:15,431 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 20 [2021-10-28 23:43:15,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:43:15,432 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2021-10-28 23:43:15,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:43:15,432 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2021-10-28 23:43:15,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 23:43:15,433 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:43:15,434 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:43:15,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-28 23:43:15,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:43:15,653 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr4REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-10-28 23:43:15,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:43:15,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1910704045, now seen corresponding path program 1 times [2021-10-28 23:43:15,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:43:15,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56242442] [2021-10-28 23:43:15,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:43:15,654 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:43:15,666 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:43:15,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2046190177] [2021-10-28 23:43:15,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:43:15,667 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:43:15,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:43:15,668 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:43:15,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-28 23:43:15,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:43:15,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:43:15,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:43:15,896 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-28 23:43:15,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2021-10-28 23:43:15,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 23:43:15,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:43:15,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56242442] [2021-10-28 23:43:15,944 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:43:15,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046190177] [2021-10-28 23:43:15,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046190177] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:43:15,945 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:43:15,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 23:43:15,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530900599] [2021-10-28 23:43:15,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 23:43:15,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:43:15,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 23:43:15,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:43:15,947 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:43:15,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:43:15,962 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2021-10-28 23:43:15,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 23:43:15,963 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-10-28 23:43:15,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:43:15,964 INFO L225 Difference]: With dead ends: 32 [2021-10-28 23:43:15,964 INFO L226 Difference]: Without dead ends: 32 [2021-10-28 23:43:15,964 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 23:43:15,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-28 23:43:15,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-10-28 23:43:15,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:43:15,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2021-10-28 23:43:15,969 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 20 [2021-10-28 23:43:15,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:43:15,969 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2021-10-28 23:43:15,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:43:15,969 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2021-10-28 23:43:15,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 23:43:15,971 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:43:15,971 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:43:16,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-28 23:43:16,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-10-28 23:43:16,172 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr5REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 2 more)] === [2021-10-28 23:43:16,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:43:16,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1910704044, now seen corresponding path program 1 times [2021-10-28 23:43:16,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:43:16,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670316671] [2021-10-28 23:43:16,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:43:16,173 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:43:16,183 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 23:43:16,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1900128551] [2021-10-28 23:43:16,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:43:16,184 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:43:16,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:43:16,185 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:43:16,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-28 23:43:16,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:43:16,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 23:43:16,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:43:16,465 INFO L354 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2021-10-28 23:43:16,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 21 [2021-10-28 23:43:16,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 23:43:16,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:43:16,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670316671] [2021-10-28 23:43:16,790 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 23:43:16,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900128551] [2021-10-28 23:43:16,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900128551] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:43:16,791 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:43:16,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:43:16,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417762984] [2021-10-28 23:43:16,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:43:16,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:43:16,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:43:16,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:43:16,793 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:43:17,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:43:17,042 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2021-10-28 23:43:17,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:43:17,043 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-10-28 23:43:17,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:43:17,043 INFO L225 Difference]: With dead ends: 31 [2021-10-28 23:43:17,043 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 23:43:17,043 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:43:17,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 23:43:17,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 23:43:17,044 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) [2021-10-28 23:43:17,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 23:43:17,044 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2021-10-28 23:43:17,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:43:17,044 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:43:17,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 23:43:17,044 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 23:43:17,045 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 23:43:17,048 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0REQUIRES_VIOLATION [2021-10-28 23:43:17,049 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr1REQUIRES_VIOLATION [2021-10-28 23:43:17,049 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr2REQUIRES_VIOLATION [2021-10-28 23:43:17,049 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr3REQUIRES_VIOLATION [2021-10-28 23:43:17,049 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr4REQUIRES_VIOLATION [2021-10-28 23:43:17,049 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr5REQUIRES_VIOLATION [2021-10-28 23:43:17,049 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr6ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 23:43:17,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-28 23:43:17,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-28 23:43:17,254 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:43:17,255 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:43:17,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:43:17 BoogieIcfgContainer [2021-10-28 23:43:17,257 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:43:17,258 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:43:17,258 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:43:17,258 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:43:17,259 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:43:07" (3/4) ... [2021-10-28 23:43:17,262 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 23:43:17,271 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2021-10-28 23:43:17,271 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2021-10-28 23:43:17,272 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2021-10-28 23:43:17,272 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2021-10-28 23:43:17,272 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2021-10-28 23:43:17,272 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2021-10-28 23:43:17,272 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2021-10-28 23:43:17,277 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-10-28 23:43:17,278 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-28 23:43:17,278 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-28 23:43:17,278 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:43:17,313 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:43:17,313 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:43:17,315 INFO L168 Benchmark]: Toolchain (without parser) took 10888.96 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 74.3 MB in the beginning and 49.5 MB in the end (delta: 24.8 MB). Peak memory consumption was 47.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:43:17,315 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 107.0 MB. Free memory is still 60.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:43:17,316 INFO L168 Benchmark]: CACSL2BoogieTranslator took 599.25 ms. Allocated memory is still 107.0 MB. Free memory was 74.0 MB in the beginning and 76.8 MB in the end (delta: -2.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:43:17,316 INFO L168 Benchmark]: Boogie Preprocessor took 63.35 ms. Allocated memory is still 107.0 MB. Free memory was 76.8 MB in the beginning and 74.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:43:17,317 INFO L168 Benchmark]: RCFGBuilder took 685.13 ms. Allocated memory is still 107.0 MB. Free memory was 74.3 MB in the beginning and 55.4 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-28 23:43:17,318 INFO L168 Benchmark]: TraceAbstraction took 9477.40 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 54.9 MB in the beginning and 52.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 26.7 MB. Max. memory is 16.1 GB. [2021-10-28 23:43:17,318 INFO L168 Benchmark]: Witness Printer took 55.74 ms. Allocated memory is still 130.0 MB. Free memory was 52.7 MB in the beginning and 49.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:43:17,320 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 107.0 MB. Free memory is still 60.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 599.25 ms. Allocated memory is still 107.0 MB. Free memory was 74.0 MB in the beginning and 76.8 MB in the end (delta: -2.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 63.35 ms. Allocated memory is still 107.0 MB. Free memory was 76.8 MB in the beginning and 74.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 685.13 ms. Allocated memory is still 107.0 MB. Free memory was 74.3 MB in the beginning and 55.4 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9477.40 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 54.9 MB in the beginning and 52.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 26.7 MB. Max. memory is 16.1 GB. * Witness Printer took 55.74 ms. Allocated memory is still 130.0 MB. Free memory was 52.7 MB in the beginning and 49.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 522]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 522]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 525]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 525]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 525]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 525]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 512]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 48 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 9.3s, OverallIterations: 10, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 195 SDtfs, 274 SDslu, 241 SDs, 0 SdLazy, 300 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 166 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=6, InterpolantAutomatonStates: 52, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 31 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 170 NumberOfCodeBlocks, 170 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 160 ConstructedInterpolants, 13 QuantifiedInterpolants, 1346 SizeOfPredicates, 26 NumberOfNonLiveVariables, 812 ConjunctsInSsa, 79 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 8/9 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 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-28 23:43:17,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989d080e-d7f4-4cc2-9a59-a7c120d06f03/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...