./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/forester-heap/dll-optional-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cae5996-f92b-47fd-af02-99878665e9ab/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cae5996-f92b-47fd-af02-99878665e9ab/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cae5996-f92b-47fd-af02-99878665e9ab/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cae5996-f92b-47fd-af02-99878665e9ab/bin/uautomizer-AkOaLMaTGY/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/dll-optional-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cae5996-f92b-47fd-af02-99878665e9ab/bin/uautomizer-AkOaLMaTGY/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cae5996-f92b-47fd-af02-99878665e9ab/bin/uautomizer-AkOaLMaTGY --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8287e6117d458104c3f33a0e7a83f771b50c3974e23296edc32c92f0b8cae546 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 08:31:42,449 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 08:31:42,453 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 08:31:42,517 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 08:31:42,518 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 08:31:42,520 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 08:31:42,522 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 08:31:42,524 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 08:31:42,527 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 08:31:42,529 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 08:31:42,530 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 08:31:42,532 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 08:31:42,533 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 08:31:42,534 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 08:31:42,536 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 08:31:42,538 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 08:31:42,540 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 08:31:42,541 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 08:31:42,544 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 08:31:42,547 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 08:31:42,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 08:31:42,552 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 08:31:42,554 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 08:31:42,555 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 08:31:42,560 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 08:31:42,560 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 08:31:42,561 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 08:31:42,562 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 08:31:42,563 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 08:31:42,564 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 08:31:42,565 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 08:31:42,566 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 08:31:42,567 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 08:31:42,568 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 08:31:42,570 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 08:31:42,570 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 08:31:42,571 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 08:31:42,572 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 08:31:42,572 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 08:31:42,573 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 08:31:42,574 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 08:31:42,576 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cae5996-f92b-47fd-af02-99878665e9ab/bin/uautomizer-AkOaLMaTGY/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2021-11-07 08:31:42,607 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 08:31:42,607 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 08:31:42,608 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 08:31:42,608 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 08:31:42,610 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 08:31:42,610 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 08:31:42,610 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 08:31:42,611 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 08:31:42,611 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 08:31:42,612 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 08:31:42,612 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 08:31:42,612 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 08:31:42,613 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 08:31:42,613 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 08:31:42,614 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 08:31:42,614 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 08:31:42,614 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 08:31:42,615 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 08:31:42,615 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 08:31:42,615 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 08:31:42,616 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 08:31:42,616 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 08:31:42,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:31:42,617 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 08:31:42,617 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 08:31:42,618 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 08:31:42,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 08:31:42,622 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 08:31:42,623 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_2cae5996-f92b-47fd-af02-99878665e9ab/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cae5996-f92b-47fd-af02-99878665e9ab/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8287e6117d458104c3f33a0e7a83f771b50c3974e23296edc32c92f0b8cae546 [2021-11-07 08:31:42,975 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 08:31:43,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 08:31:43,019 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 08:31:43,021 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 08:31:43,022 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 08:31:43,025 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cae5996-f92b-47fd-af02-99878665e9ab/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/forester-heap/dll-optional-2.i [2021-11-07 08:31:43,116 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cae5996-f92b-47fd-af02-99878665e9ab/bin/uautomizer-AkOaLMaTGY/data/698f37160/e35a859ff03740beb5b78fc5ed42553c/FLAG8bf805d5a [2021-11-07 08:31:43,682 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 08:31:43,695 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cae5996-f92b-47fd-af02-99878665e9ab/sv-benchmarks/c/forester-heap/dll-optional-2.i [2021-11-07 08:31:43,709 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cae5996-f92b-47fd-af02-99878665e9ab/bin/uautomizer-AkOaLMaTGY/data/698f37160/e35a859ff03740beb5b78fc5ed42553c/FLAG8bf805d5a [2021-11-07 08:31:43,975 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cae5996-f92b-47fd-af02-99878665e9ab/bin/uautomizer-AkOaLMaTGY/data/698f37160/e35a859ff03740beb5b78fc5ed42553c [2021-11-07 08:31:43,977 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 08:31:43,978 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-07 08:31:43,983 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 08:31:43,983 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 08:31:43,987 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 08:31:43,988 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:31:43" (1/1) ... [2021-11-07 08:31:43,989 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@789b6fbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:31:43, skipping insertion in model container [2021-11-07 08:31:43,992 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:31:43" (1/1) ... [2021-11-07 08:31:44,000 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 08:31:44,037 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:31:44,412 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cae5996-f92b-47fd-af02-99878665e9ab/sv-benchmarks/c/forester-heap/dll-optional-2.i[22706,22719] [2021-11-07 08:31:44,419 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:31:44,427 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 08:31:44,472 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cae5996-f92b-47fd-af02-99878665e9ab/sv-benchmarks/c/forester-heap/dll-optional-2.i[22706,22719] [2021-11-07 08:31:44,478 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:31:44,517 INFO L208 MainTranslator]: Completed translation [2021-11-07 08:31:44,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:31:44 WrapperNode [2021-11-07 08:31:44,518 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 08:31:44,519 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 08:31:44,519 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 08:31:44,519 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 08:31:44,531 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:31:44" (1/1) ... [2021-11-07 08:31:44,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:31:44" (1/1) ... [2021-11-07 08:31:44,546 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:31:44" (1/1) ... [2021-11-07 08:31:44,546 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:31:44" (1/1) ... [2021-11-07 08:31:44,567 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:31:44" (1/1) ... [2021-11-07 08:31:44,576 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:31:44" (1/1) ... [2021-11-07 08:31:44,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:31:44" (1/1) ... [2021-11-07 08:31:44,605 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 08:31:44,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 08:31:44,606 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 08:31:44,606 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 08:31:44,610 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:31:44" (1/1) ... [2021-11-07 08:31:44,627 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:31:44,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cae5996-f92b-47fd-af02-99878665e9ab/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:31:44,650 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cae5996-f92b-47fd-af02-99878665e9ab/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 08:31:44,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cae5996-f92b-47fd-af02-99878665e9ab/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 08:31:44,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-07 08:31:44,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 08:31:44,691 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-07 08:31:44,691 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-07 08:31:44,691 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-07 08:31:44,691 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-07 08:31:44,692 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-07 08:31:44,692 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-07 08:31:44,693 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-07 08:31:44,693 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-07 08:31:44,693 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-07 08:31:44,694 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-07 08:31:44,694 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-07 08:31:44,694 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-07 08:31:44,694 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-07 08:31:44,694 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-07 08:31:44,694 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-07 08:31:44,695 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-07 08:31:44,695 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-07 08:31:44,695 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-07 08:31:44,695 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-07 08:31:44,695 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-07 08:31:44,695 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-07 08:31:44,695 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-07 08:31:44,696 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-07 08:31:44,696 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-07 08:31:44,696 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-07 08:31:44,696 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-07 08:31:44,696 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-07 08:31:44,696 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-07 08:31:44,696 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-07 08:31:44,696 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-07 08:31:44,697 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-07 08:31:44,697 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-07 08:31:44,697 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-07 08:31:44,697 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-07 08:31:44,697 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-07 08:31:44,697 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-07 08:31:44,697 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-07 08:31:44,698 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-07 08:31:44,698 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-07 08:31:44,698 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-07 08:31:44,698 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-07 08:31:44,698 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-07 08:31:44,698 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-07 08:31:44,698 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-07 08:31:44,699 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-07 08:31:44,699 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-07 08:31:44,699 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-07 08:31:44,699 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-07 08:31:44,700 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-07 08:31:44,700 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-07 08:31:44,701 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-07 08:31:44,701 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-07 08:31:44,701 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-07 08:31:44,701 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-07 08:31:44,701 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-07 08:31:44,701 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-07 08:31:44,702 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-11-07 08:31:44,702 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-07 08:31:44,702 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-07 08:31:44,702 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-07 08:31:44,702 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-07 08:31:44,702 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-07 08:31:44,702 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-07 08:31:44,703 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-07 08:31:44,703 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-07 08:31:44,704 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-07 08:31:44,704 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-07 08:31:44,705 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-07 08:31:44,705 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-07 08:31:44,705 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-07 08:31:44,706 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-07 08:31:44,706 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-07 08:31:44,706 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-07 08:31:44,706 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-07 08:31:44,706 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-07 08:31:44,706 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-07 08:31:44,706 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-07 08:31:44,707 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-07 08:31:44,707 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-07 08:31:44,708 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-07 08:31:44,708 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-07 08:31:44,708 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-07 08:31:44,708 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-07 08:31:44,708 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-07 08:31:44,708 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-07 08:31:44,708 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-07 08:31:44,709 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-07 08:31:44,709 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-07 08:31:44,709 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-07 08:31:44,709 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-07 08:31:44,709 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-07 08:31:44,709 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-07 08:31:44,709 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-07 08:31:44,709 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-07 08:31:44,710 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-07 08:31:44,710 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-07 08:31:44,710 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-07 08:31:44,710 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-07 08:31:44,710 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-07 08:31:44,710 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-07 08:31:44,710 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-07 08:31:44,711 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-07 08:31:44,711 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-07 08:31:44,711 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-07 08:31:44,711 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-07 08:31:44,711 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-11-07 08:31:44,712 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-07 08:31:44,712 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-07 08:31:44,712 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-07 08:31:44,713 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-07 08:31:44,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 08:31:44,713 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-07 08:31:44,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 08:31:44,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 08:31:44,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 08:31:44,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 08:31:44,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 08:31:44,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 08:31:44,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-07 08:31:44,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 08:31:44,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 08:31:45,524 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 08:31:45,524 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-07 08:31:45,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:31:45 BoogieIcfgContainer [2021-11-07 08:31:45,527 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 08:31:45,529 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 08:31:45,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 08:31:45,534 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 08:31:45,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:31:43" (1/3) ... [2021-11-07 08:31:45,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@303b6008 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:31:45, skipping insertion in model container [2021-11-07 08:31:45,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:31:44" (2/3) ... [2021-11-07 08:31:45,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@303b6008 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:31:45, skipping insertion in model container [2021-11-07 08:31:45,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:31:45" (3/3) ... [2021-11-07 08:31:45,538 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-optional-2.i [2021-11-07 08:31:45,544 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 08:31:45,544 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 66 error locations. [2021-11-07 08:31:45,593 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 08:31:45,600 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 [2021-11-07 08:31:45,601 INFO L340 AbstractCegarLoop]: Starting to check reachability of 66 error locations. [2021-11-07 08:31:45,621 INFO L276 IsEmpty]: Start isEmpty. Operand has 143 states, 72 states have (on average 2.125) internal successors, (153), 138 states have internal predecessors, (153), 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) [2021-11-07 08:31:45,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-07 08:31:45,629 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:31:45,630 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:31:45,631 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 61 more)] === [2021-11-07 08:31:45,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:31:45,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1414783073, now seen corresponding path program 1 times [2021-11-07 08:31:45,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:31:45,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947672148] [2021-11-07 08:31:45,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:31:45,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:31:45,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:31:45,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 08:31:45,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:31:45,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:31:45,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:31:45,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947672148] [2021-11-07 08:31:45,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947672148] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:31:45,928 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:31:45,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:31:45,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844080599] [2021-11-07 08:31:45,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:31:45,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:31:45,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:31:45,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:31:45,955 INFO L87 Difference]: Start difference. First operand has 143 states, 72 states have (on average 2.125) internal successors, (153), 138 states have internal predecessors, (153), 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, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-11-07 08:31:46,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:31:46,287 INFO L93 Difference]: Finished difference Result 143 states and 152 transitions. [2021-11-07 08:31:46,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:31:46,289 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 7 [2021-11-07 08:31:46,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:31:46,300 INFO L225 Difference]: With dead ends: 143 [2021-11-07 08:31:46,301 INFO L226 Difference]: Without dead ends: 139 [2021-11-07 08:31:46,302 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:31:46,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-11-07 08:31:46,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 133. [2021-11-07 08:31:46,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 74 states have (on average 1.8918918918918919) internal successors, (140), 129 states have internal predecessors, (140), 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) [2021-11-07 08:31:46,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 143 transitions. [2021-11-07 08:31:46,376 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 143 transitions. Word has length 7 [2021-11-07 08:31:46,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:31:46,377 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 143 transitions. [2021-11-07 08:31:46,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-11-07 08:31:46,378 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 143 transitions. [2021-11-07 08:31:46,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-07 08:31:46,379 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:31:46,380 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:31:46,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 08:31:46,380 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 61 more)] === [2021-11-07 08:31:46,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:31:46,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1414783074, now seen corresponding path program 1 times [2021-11-07 08:31:46,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:31:46,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681022443] [2021-11-07 08:31:46,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:31:46,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:31:46,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:31:46,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 08:31:46,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:31:46,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:31:46,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:31:46,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681022443] [2021-11-07 08:31:46,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681022443] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:31:46,573 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:31:46,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:31:46,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473048485] [2021-11-07 08:31:46,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:31:46,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:31:46,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:31:46,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:31:46,584 INFO L87 Difference]: Start difference. First operand 133 states and 143 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-11-07 08:31:46,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:31:46,904 INFO L93 Difference]: Finished difference Result 128 states and 138 transitions. [2021-11-07 08:31:46,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:31:46,905 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 7 [2021-11-07 08:31:46,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:31:46,910 INFO L225 Difference]: With dead ends: 128 [2021-11-07 08:31:46,910 INFO L226 Difference]: Without dead ends: 128 [2021-11-07 08:31:46,911 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:31:46,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-11-07 08:31:46,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 124. [2021-11-07 08:31:46,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 74 states have (on average 1.7702702702702702) internal successors, (131), 120 states have internal predecessors, (131), 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) [2021-11-07 08:31:46,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 134 transitions. [2021-11-07 08:31:46,938 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 134 transitions. Word has length 7 [2021-11-07 08:31:46,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:31:46,939 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 134 transitions. [2021-11-07 08:31:46,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-11-07 08:31:46,939 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 134 transitions. [2021-11-07 08:31:46,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-07 08:31:46,941 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:31:46,941 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:31:46,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 08:31:46,941 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr10REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 61 more)] === [2021-11-07 08:31:46,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:31:46,943 INFO L85 PathProgramCache]: Analyzing trace with hash -844776134, now seen corresponding path program 1 times [2021-11-07 08:31:46,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:31:46,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366450028] [2021-11-07 08:31:46,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:31:46,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:31:46,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:31:47,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 08:31:47,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:31:47,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:31:47,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:31:47,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366450028] [2021-11-07 08:31:47,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366450028] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:31:47,120 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:31:47,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 08:31:47,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154812976] [2021-11-07 08:31:47,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 08:31:47,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:31:47,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:31:47,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:31:47,123 INFO L87 Difference]: Start difference. First operand 124 states and 134 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2021-11-07 08:31:47,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:31:47,514 INFO L93 Difference]: Finished difference Result 153 states and 166 transitions. [2021-11-07 08:31:47,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 08:31:47,516 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 16 [2021-11-07 08:31:47,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:31:47,522 INFO L225 Difference]: With dead ends: 153 [2021-11-07 08:31:47,524 INFO L226 Difference]: Without dead ends: 153 [2021-11-07 08:31:47,525 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-07 08:31:47,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-11-07 08:31:47,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 123. [2021-11-07 08:31:47,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 74 states have (on average 1.7567567567567568) internal successors, (130), 119 states have internal predecessors, (130), 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) [2021-11-07 08:31:47,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 133 transitions. [2021-11-07 08:31:47,541 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 133 transitions. Word has length 16 [2021-11-07 08:31:47,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:31:47,547 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 133 transitions. [2021-11-07 08:31:47,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2021-11-07 08:31:47,548 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 133 transitions. [2021-11-07 08:31:47,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-07 08:31:47,548 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:31:47,549 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:31:47,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 08:31:47,549 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr11REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 61 more)] === [2021-11-07 08:31:47,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:31:47,557 INFO L85 PathProgramCache]: Analyzing trace with hash -844776133, now seen corresponding path program 1 times [2021-11-07 08:31:47,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:31:47,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808458353] [2021-11-07 08:31:47,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:31:47,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:31:47,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:31:47,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 08:31:47,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:31:47,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:31:47,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:31:47,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808458353] [2021-11-07 08:31:47,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808458353] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:31:47,725 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:31:47,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 08:31:47,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911044394] [2021-11-07 08:31:47,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 08:31:47,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:31:47,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:31:47,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:31:47,727 INFO L87 Difference]: Start difference. First operand 123 states and 133 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2021-11-07 08:31:48,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:31:48,108 INFO L93 Difference]: Finished difference Result 122 states and 132 transitions. [2021-11-07 08:31:48,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 08:31:48,109 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 16 [2021-11-07 08:31:48,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:31:48,109 INFO L225 Difference]: With dead ends: 122 [2021-11-07 08:31:48,110 INFO L226 Difference]: Without dead ends: 122 [2021-11-07 08:31:48,110 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-07 08:31:48,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-11-07 08:31:48,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2021-11-07 08:31:48,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 74 states have (on average 1.7432432432432432) internal successors, (129), 118 states have internal predecessors, (129), 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) [2021-11-07 08:31:48,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 132 transitions. [2021-11-07 08:31:48,120 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 132 transitions. Word has length 16 [2021-11-07 08:31:48,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:31:48,120 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 132 transitions. [2021-11-07 08:31:48,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2021-11-07 08:31:48,121 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 132 transitions. [2021-11-07 08:31:48,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-07 08:31:48,121 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:31:48,122 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:31:48,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 08:31:48,122 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr20REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 61 more)] === [2021-11-07 08:31:48,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:31:48,123 INFO L85 PathProgramCache]: Analyzing trace with hash -667442544, now seen corresponding path program 1 times [2021-11-07 08:31:48,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:31:48,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562920709] [2021-11-07 08:31:48,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:31:48,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:31:48,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:31:48,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 08:31:48,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:31:48,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:31:48,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:31:48,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562920709] [2021-11-07 08:31:48,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562920709] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:31:48,221 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:31:48,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:31:48,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267327442] [2021-11-07 08:31:48,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:31:48,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:31:48,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:31:48,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:31:48,223 INFO L87 Difference]: Start difference. First operand 122 states and 132 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-11-07 08:31:48,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:31:48,486 INFO L93 Difference]: Finished difference Result 125 states and 134 transitions. [2021-11-07 08:31:48,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 08:31:48,487 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 17 [2021-11-07 08:31:48,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:31:48,488 INFO L225 Difference]: With dead ends: 125 [2021-11-07 08:31:48,488 INFO L226 Difference]: Without dead ends: 125 [2021-11-07 08:31:48,488 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:31:48,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-11-07 08:31:48,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 116. [2021-11-07 08:31:48,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 80 states have (on average 1.6) internal successors, (128), 112 states have internal predecessors, (128), 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) [2021-11-07 08:31:48,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 131 transitions. [2021-11-07 08:31:48,494 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 131 transitions. Word has length 17 [2021-11-07 08:31:48,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:31:48,494 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 131 transitions. [2021-11-07 08:31:48,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-11-07 08:31:48,499 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 131 transitions. [2021-11-07 08:31:48,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-07 08:31:48,500 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:31:48,500 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:31:48,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 08:31:48,500 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr21REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 61 more)] === [2021-11-07 08:31:48,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:31:48,501 INFO L85 PathProgramCache]: Analyzing trace with hash -667442543, now seen corresponding path program 1 times [2021-11-07 08:31:48,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:31:48,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068164325] [2021-11-07 08:31:48,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:31:48,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:31:48,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:31:48,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 08:31:48,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:31:48,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:31:48,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:31:48,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068164325] [2021-11-07 08:31:48,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068164325] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:31:48,645 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:31:48,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:31:48,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23602844] [2021-11-07 08:31:48,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:31:48,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:31:48,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:31:48,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:31:48,648 INFO L87 Difference]: Start difference. First operand 116 states and 131 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-11-07 08:31:48,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:31:48,946 INFO L93 Difference]: Finished difference Result 142 states and 156 transitions. [2021-11-07 08:31:48,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 08:31:48,950 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 17 [2021-11-07 08:31:48,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:31:48,952 INFO L225 Difference]: With dead ends: 142 [2021-11-07 08:31:48,952 INFO L226 Difference]: Without dead ends: 142 [2021-11-07 08:31:48,952 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:31:48,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-11-07 08:31:48,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 131. [2021-11-07 08:31:48,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 95 states have (on average 1.5368421052631578) internal successors, (146), 127 states have internal predecessors, (146), 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) [2021-11-07 08:31:48,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 149 transitions. [2021-11-07 08:31:48,959 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 149 transitions. Word has length 17 [2021-11-07 08:31:48,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:31:48,959 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 149 transitions. [2021-11-07 08:31:48,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-11-07 08:31:48,960 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 149 transitions. [2021-11-07 08:31:48,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-07 08:31:48,960 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:31:48,961 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] [2021-11-07 08:31:48,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 08:31:48,961 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr24REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 61 more)] === [2021-11-07 08:31:48,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:31:48,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1917790938, now seen corresponding path program 1 times [2021-11-07 08:31:48,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:31:48,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656810932] [2021-11-07 08:31:48,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:31:48,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:31:48,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:31:49,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 08:31:49,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:31:49,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:31:49,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:31:49,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656810932] [2021-11-07 08:31:49,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656810932] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:31:49,044 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:31:49,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 08:31:49,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41554943] [2021-11-07 08:31:49,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 08:31:49,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:31:49,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:31:49,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:31:49,046 INFO L87 Difference]: Start difference. First operand 131 states and 149 transitions. Second operand has 6 states, 5 states have (on average 3.4) 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) [2021-11-07 08:31:49,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:31:49,305 INFO L93 Difference]: Finished difference Result 130 states and 147 transitions. [2021-11-07 08:31:49,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 08:31:49,305 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) 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 [2021-11-07 08:31:49,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:31:49,307 INFO L225 Difference]: With dead ends: 130 [2021-11-07 08:31:49,307 INFO L226 Difference]: Without dead ends: 130 [2021-11-07 08:31:49,308 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-07 08:31:49,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-11-07 08:31:49,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-11-07 08:31:49,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 95 states have (on average 1.5157894736842106) internal successors, (144), 126 states have internal predecessors, (144), 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) [2021-11-07 08:31:49,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 147 transitions. [2021-11-07 08:31:49,319 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 147 transitions. Word has length 20 [2021-11-07 08:31:49,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:31:49,320 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 147 transitions. [2021-11-07 08:31:49,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) 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) [2021-11-07 08:31:49,320 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 147 transitions. [2021-11-07 08:31:49,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-07 08:31:49,321 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:31:49,321 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] [2021-11-07 08:31:49,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 08:31:49,322 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr25REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 61 more)] === [2021-11-07 08:31:49,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:31:49,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1917790939, now seen corresponding path program 1 times [2021-11-07 08:31:49,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:31:49,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988600882] [2021-11-07 08:31:49,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:31:49,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:31:49,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:31:49,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 08:31:49,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:31:49,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:31:49,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:31:49,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988600882] [2021-11-07 08:31:49,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988600882] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:31:49,439 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:31:49,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 08:31:49,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7027254] [2021-11-07 08:31:49,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 08:31:49,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:31:49,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:31:49,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:31:49,440 INFO L87 Difference]: Start difference. First operand 130 states and 147 transitions. Second operand has 6 states, 5 states have (on average 3.4) 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) [2021-11-07 08:31:49,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:31:49,717 INFO L93 Difference]: Finished difference Result 129 states and 145 transitions. [2021-11-07 08:31:49,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 08:31:49,718 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) 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 [2021-11-07 08:31:49,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:31:49,719 INFO L225 Difference]: With dead ends: 129 [2021-11-07 08:31:49,719 INFO L226 Difference]: Without dead ends: 129 [2021-11-07 08:31:49,719 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-07 08:31:49,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-11-07 08:31:49,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2021-11-07 08:31:49,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 95 states have (on average 1.4947368421052631) internal successors, (142), 125 states have internal predecessors, (142), 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) [2021-11-07 08:31:49,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 145 transitions. [2021-11-07 08:31:49,724 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 145 transitions. Word has length 20 [2021-11-07 08:31:49,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:31:49,724 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 145 transitions. [2021-11-07 08:31:49,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) 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) [2021-11-07 08:31:49,725 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 145 transitions. [2021-11-07 08:31:49,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-07 08:31:49,726 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:31:49,726 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:31:49,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 08:31:49,726 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr65ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 61 more)] === [2021-11-07 08:31:49,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:31:49,727 INFO L85 PathProgramCache]: Analyzing trace with hash 461207233, now seen corresponding path program 1 times [2021-11-07 08:31:49,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:31:49,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170844649] [2021-11-07 08:31:49,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:31:49,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:31:49,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:31:49,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-07 08:31:49,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:31:49,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:31:49,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:31:49,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170844649] [2021-11-07 08:31:49,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170844649] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:31:49,811 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:31:49,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 08:31:49,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114160783] [2021-11-07 08:31:49,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:31:49,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:31:49,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:31:49,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:31:49,812 INFO L87 Difference]: Start difference. First operand 129 states and 145 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 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) [2021-11-07 08:31:50,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:31:50,066 INFO L93 Difference]: Finished difference Result 156 states and 172 transitions. [2021-11-07 08:31:50,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:31:50,067 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 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 22 [2021-11-07 08:31:50,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:31:50,070 INFO L225 Difference]: With dead ends: 156 [2021-11-07 08:31:50,070 INFO L226 Difference]: Without dead ends: 156 [2021-11-07 08:31:50,075 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:31:50,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-11-07 08:31:50,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 129. [2021-11-07 08:31:50,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 95 states have (on average 1.4736842105263157) internal successors, (140), 125 states have internal predecessors, (140), 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) [2021-11-07 08:31:50,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 143 transitions. [2021-11-07 08:31:50,080 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 143 transitions. Word has length 22 [2021-11-07 08:31:50,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:31:50,080 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 143 transitions. [2021-11-07 08:31:50,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 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) [2021-11-07 08:31:50,081 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 143 transitions. [2021-11-07 08:31:50,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-07 08:31:50,081 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:31:50,082 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:31:50,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 08:31:50,082 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr50ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 61 more)] === [2021-11-07 08:31:50,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:31:50,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1435277979, now seen corresponding path program 1 times [2021-11-07 08:31:50,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:31:50,091 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062211018] [2021-11-07 08:31:50,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:31:50,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:31:50,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:31:50,125 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:31:50,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:31:50,198 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:31:50,198 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 08:31:50,199 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr50ASSERT_VIOLATIONMEMORY_LEAK [2021-11-07 08:31:50,202 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-11-07 08:31:50,203 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-11-07 08:31:50,203 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-11-07 08:31:50,203 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-11-07 08:31:50,203 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-11-07 08:31:50,203 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-11-07 08:31:50,204 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-11-07 08:31:50,204 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-11-07 08:31:50,204 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-11-07 08:31:50,204 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-11-07 08:31:50,204 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-11-07 08:31:50,205 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-11-07 08:31:50,205 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION [2021-11-07 08:31:50,205 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-11-07 08:31:50,205 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-11-07 08:31:50,208 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-11-07 08:31:50,209 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-11-07 08:31:50,209 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION [2021-11-07 08:31:50,209 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-11-07 08:31:50,209 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-11-07 08:31:50,209 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION [2021-11-07 08:31:50,210 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION [2021-11-07 08:31:50,210 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22REQUIRES_VIOLATION [2021-11-07 08:31:50,210 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION [2021-11-07 08:31:50,210 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION [2021-11-07 08:31:50,210 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25REQUIRES_VIOLATION [2021-11-07 08:31:50,211 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr26REQUIRES_VIOLATION [2021-11-07 08:31:50,211 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION [2021-11-07 08:31:50,211 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28REQUIRES_VIOLATION [2021-11-07 08:31:50,211 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr29REQUIRES_VIOLATION [2021-11-07 08:31:50,212 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr30REQUIRES_VIOLATION [2021-11-07 08:31:50,212 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr31REQUIRES_VIOLATION [2021-11-07 08:31:50,212 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr32REQUIRES_VIOLATION [2021-11-07 08:31:50,212 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr33REQUIRES_VIOLATION [2021-11-07 08:31:50,212 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr34REQUIRES_VIOLATION [2021-11-07 08:31:50,213 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr35REQUIRES_VIOLATION [2021-11-07 08:31:50,213 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr36REQUIRES_VIOLATION [2021-11-07 08:31:50,213 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr37REQUIRES_VIOLATION [2021-11-07 08:31:50,213 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr38REQUIRES_VIOLATION [2021-11-07 08:31:50,213 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr39REQUIRES_VIOLATION [2021-11-07 08:31:50,214 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr40REQUIRES_VIOLATION [2021-11-07 08:31:50,214 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr41REQUIRES_VIOLATION [2021-11-07 08:31:50,214 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr42REQUIRES_VIOLATION [2021-11-07 08:31:50,214 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr43REQUIRES_VIOLATION [2021-11-07 08:31:50,214 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr44REQUIRES_VIOLATION [2021-11-07 08:31:50,215 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr45REQUIRES_VIOLATION [2021-11-07 08:31:50,215 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr46REQUIRES_VIOLATION [2021-11-07 08:31:50,215 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr47REQUIRES_VIOLATION [2021-11-07 08:31:50,215 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr48REQUIRES_VIOLATION [2021-11-07 08:31:50,215 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr49REQUIRES_VIOLATION [2021-11-07 08:31:50,222 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr51REQUIRES_VIOLATION [2021-11-07 08:31:50,223 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr52REQUIRES_VIOLATION [2021-11-07 08:31:50,223 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr53REQUIRES_VIOLATION [2021-11-07 08:31:50,223 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr54REQUIRES_VIOLATION [2021-11-07 08:31:50,223 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr55REQUIRES_VIOLATION [2021-11-07 08:31:50,223 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr56REQUIRES_VIOLATION [2021-11-07 08:31:50,224 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr57REQUIRES_VIOLATION [2021-11-07 08:31:50,224 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr58REQUIRES_VIOLATION [2021-11-07 08:31:50,224 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr59ASSERT_VIOLATIONMEMORY_FREE [2021-11-07 08:31:50,225 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr60ASSERT_VIOLATIONMEMORY_FREE [2021-11-07 08:31:50,225 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr61ASSERT_VIOLATIONMEMORY_FREE [2021-11-07 08:31:50,225 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr62ASSERT_VIOLATIONMEMORY_FREE [2021-11-07 08:31:50,225 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr63ASSERT_VIOLATIONMEMORY_FREE [2021-11-07 08:31:50,226 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr64ASSERT_VIOLATIONMEMORY_FREE [2021-11-07 08:31:50,226 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr65ENSURES_VIOLATIONMEMORY_LEAK [2021-11-07 08:31:50,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 08:31:50,230 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:31:50,235 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 08:31:50,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:31:50 BoogieIcfgContainer [2021-11-07 08:31:50,277 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 08:31:50,278 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 08:31:50,278 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 08:31:50,279 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 08:31:50,279 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:31:45" (3/4) ... [2021-11-07 08:31:50,281 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-07 08:31:50,345 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cae5996-f92b-47fd-af02-99878665e9ab/bin/uautomizer-AkOaLMaTGY/witness.graphml [2021-11-07 08:31:50,345 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 08:31:50,347 INFO L168 Benchmark]: Toolchain (without parser) took 6367.45 ms. Allocated memory was 88.1 MB in the beginning and 138.4 MB in the end (delta: 50.3 MB). Free memory was 50.2 MB in the beginning and 88.5 MB in the end (delta: -38.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 16.1 GB. [2021-11-07 08:31:50,347 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 88.1 MB. Free memory was 68.2 MB in the beginning and 68.1 MB in the end (delta: 83.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 08:31:50,348 INFO L168 Benchmark]: CACSL2BoogieTranslator took 535.31 ms. Allocated memory is still 88.1 MB. Free memory was 50.1 MB in the beginning and 58.1 MB in the end (delta: -8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 08:31:50,349 INFO L168 Benchmark]: Boogie Preprocessor took 86.40 ms. Allocated memory is still 88.1 MB. Free memory was 58.1 MB in the beginning and 55.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 08:31:50,350 INFO L168 Benchmark]: RCFGBuilder took 921.40 ms. Allocated memory was 88.1 MB in the beginning and 115.3 MB in the end (delta: 27.3 MB). Free memory was 55.3 MB in the beginning and 85.5 MB in the end (delta: -30.2 MB). Peak memory consumption was 34.1 MB. Max. memory is 16.1 GB. [2021-11-07 08:31:50,350 INFO L168 Benchmark]: TraceAbstraction took 4748.04 ms. Allocated memory was 115.3 MB in the beginning and 138.4 MB in the end (delta: 23.1 MB). Free memory was 85.5 MB in the beginning and 89.5 MB in the end (delta: -4.0 MB). Peak memory consumption was 17.7 MB. Max. memory is 16.1 GB. [2021-11-07 08:31:50,350 INFO L168 Benchmark]: Witness Printer took 66.98 ms. Allocated memory is still 138.4 MB. Free memory was 89.5 MB in the beginning and 88.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 08:31:50,353 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 88.1 MB. Free memory was 68.2 MB in the beginning and 68.1 MB in the end (delta: 83.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 535.31 ms. Allocated memory is still 88.1 MB. Free memory was 50.1 MB in the beginning and 58.1 MB in the end (delta: -8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 86.40 ms. Allocated memory is still 88.1 MB. Free memory was 58.1 MB in the beginning and 55.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 921.40 ms. Allocated memory was 88.1 MB in the beginning and 115.3 MB in the end (delta: 27.3 MB). Free memory was 55.3 MB in the beginning and 85.5 MB in the end (delta: -30.2 MB). Peak memory consumption was 34.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4748.04 ms. Allocated memory was 115.3 MB in the beginning and 138.4 MB in the end (delta: 23.1 MB). Free memory was 85.5 MB in the beginning and 89.5 MB in the end (delta: -4.0 MB). Peak memory consumption was 17.7 MB. Max. memory is 16.1 GB. * Witness Printer took 66.98 ms. Allocated memory is still 138.4 MB. Free memory was 89.5 MB in the beginning and 88.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 1009]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L997] SLL* head = malloc(sizeof(SLL)); [L998] head->next = ((void*)0) VAL [head={-1:0}] [L999] head->prev = ((void*)0) VAL [head={-1:0}] [L1000] COND FALSE !(__VERIFIER_nondet_int()) [L1000] COND TRUE __VERIFIER_nondet_int() [L1000] head->data = 1 VAL [head={-1:0}] [L1000] head->opt = head VAL [head={-1:0}] [L1001] SLL* x = head; VAL [head={-1:0}, x={-1:0}] [L1003] COND FALSE !(__VERIFIER_nondet_int()) [L1006] x = head VAL [head={-1:0}, x={-1:0}] [L1007] COND TRUE x != ((void*)0) VAL [head={-1:0}, x={-1:0}] [L1009] EXPR x->data VAL [head={-1:0}, x={-1:0}, x->data=1] [L1009] EXPR x->data == 2 && x->opt == x VAL [head={-1:0}, x={-1:0}, x->data=1, x->data == 2 && x->opt == x=0] [L1009] COND TRUE !(x->data == 2 && x->opt == x) [L1009] reach_error() VAL [head={-1:0}, x={-1:0}] - UnprovableResult [Line: 998]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 998]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 999]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 999]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1000]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1003]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1009]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1009]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1009]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1009]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1010]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1010]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1018]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1019]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1020]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1020]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1020]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1020]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1020]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1021]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1021]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1021]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 994]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 146 locations, 66 error locations. Started 1 CEGAR loops. OverallTime: 4.6s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 778 SDtfs, 658 SDslu, 948 SDs, 0 SdLazy, 2272 SolverSat, 94 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=143occurred in iteration=0, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 87 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 165 NumberOfCodeBlocks, 165 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 133 ConstructedInterpolants, 0 QuantifiedInterpolants, 689 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-07 08:31:50,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2cae5996-f92b-47fd-af02-99878665e9ab/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup)