./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/verifythis/elimination_max.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1951273a-5e9f-4333-8acf-35fc821c5939/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1951273a-5e9f-4333-8acf-35fc821c5939/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1951273a-5e9f-4333-8acf-35fc821c5939/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1951273a-5e9f-4333-8acf-35fc821c5939/bin/uautomizer-w2VwFs6gM0/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/verifythis/elimination_max.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1951273a-5e9f-4333-8acf-35fc821c5939/bin/uautomizer-w2VwFs6gM0/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1951273a-5e9f-4333-8acf-35fc821c5939/bin/uautomizer-w2VwFs6gM0 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0bc7b1b837bfd7794f122f6504da8d835bb2276ae4afe0cc0d058d385032d49e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:27:05,398 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:27:05,401 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:27:05,431 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:27:05,432 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:27:05,433 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:27:05,435 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:27:05,437 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:27:05,439 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:27:05,440 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:27:05,442 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:27:05,443 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:27:05,444 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:27:05,445 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:27:05,447 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:27:05,448 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:27:05,449 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:27:05,451 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:27:05,453 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:27:05,455 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:27:05,457 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:27:05,459 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:27:05,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:27:05,462 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:27:05,465 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:27:05,466 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:27:05,467 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:27:05,468 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:27:05,468 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:27:05,470 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:27:05,470 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:27:05,471 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:27:05,473 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:27:05,474 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:27:05,475 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:27:05,476 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:27:05,477 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:27:05,477 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:27:05,477 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:27:05,479 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:27:05,479 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:27:05,480 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1951273a-5e9f-4333-8acf-35fc821c5939/bin/uautomizer-w2VwFs6gM0/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-22 15:27:05,504 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:27:05,505 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:27:05,505 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:27:05,506 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:27:05,507 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:27:05,507 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:27:05,507 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:27:05,508 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:27:05,508 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 15:27:05,508 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-22 15:27:05,508 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 15:27:05,509 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 15:27:05,509 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:27:05,509 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-22 15:27:05,510 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-22 15:27:05,510 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-22 15:27:05,510 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 15:27:05,510 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-22 15:27:05,511 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 15:27:05,511 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:27:05,511 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:27:05,512 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:27:05,512 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 15:27:05,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:27:05,512 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:27:05,513 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 15:27:05,513 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 15:27:05,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 15:27:05,514 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:27:05,514 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_1951273a-5e9f-4333-8acf-35fc821c5939/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1951273a-5e9f-4333-8acf-35fc821c5939/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0bc7b1b837bfd7794f122f6504da8d835bb2276ae4afe0cc0d058d385032d49e [2021-11-22 15:27:05,793 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:27:05,824 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:27:05,827 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:27:05,828 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:27:05,830 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:27:05,832 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1951273a-5e9f-4333-8acf-35fc821c5939/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/verifythis/elimination_max.c [2021-11-22 15:27:05,921 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1951273a-5e9f-4333-8acf-35fc821c5939/bin/uautomizer-w2VwFs6gM0/data/cd6c6d28e/6be14beb6d834429bc0b90e40f0b069a/FLAGa0843feda [2021-11-22 15:27:06,465 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:27:06,467 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1951273a-5e9f-4333-8acf-35fc821c5939/sv-benchmarks/c/verifythis/elimination_max.c [2021-11-22 15:27:06,478 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1951273a-5e9f-4333-8acf-35fc821c5939/bin/uautomizer-w2VwFs6gM0/data/cd6c6d28e/6be14beb6d834429bc0b90e40f0b069a/FLAGa0843feda [2021-11-22 15:27:06,814 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1951273a-5e9f-4333-8acf-35fc821c5939/bin/uautomizer-w2VwFs6gM0/data/cd6c6d28e/6be14beb6d834429bc0b90e40f0b069a [2021-11-22 15:27:06,822 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:27:06,824 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:27:06,827 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:27:06,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:27:06,831 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:27:06,832 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:27:06" (1/1) ... [2021-11-22 15:27:06,834 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a0b26a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:27:06, skipping insertion in model container [2021-11-22 15:27:06,834 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:27:06" (1/1) ... [2021-11-22 15:27:06,842 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:27:06,857 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:27:07,112 WARN L230 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_1951273a-5e9f-4333-8acf-35fc821c5939/sv-benchmarks/c/verifythis/elimination_max.c[485,498] [2021-11-22 15:27:07,128 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:27:07,141 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 15:27:07,154 WARN L230 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_1951273a-5e9f-4333-8acf-35fc821c5939/sv-benchmarks/c/verifythis/elimination_max.c[485,498] [2021-11-22 15:27:07,161 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:27:07,175 INFO L208 MainTranslator]: Completed translation [2021-11-22 15:27:07,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:27:07 WrapperNode [2021-11-22 15:27:07,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:27:07,176 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 15:27:07,177 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 15:27:07,177 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 15:27:07,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:27:07" (1/1) ... [2021-11-22 15:27:07,209 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:27:07" (1/1) ... [2021-11-22 15:27:07,244 INFO L137 Inliner]: procedures = 18, calls = 20, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 80 [2021-11-22 15:27:07,244 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 15:27:07,246 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 15:27:07,246 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 15:27:07,246 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 15:27:07,254 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:27:07" (1/1) ... [2021-11-22 15:27:07,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:27:07" (1/1) ... [2021-11-22 15:27:07,261 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:27:07" (1/1) ... [2021-11-22 15:27:07,261 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:27:07" (1/1) ... [2021-11-22 15:27:07,280 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:27:07" (1/1) ... [2021-11-22 15:27:07,284 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:27:07" (1/1) ... [2021-11-22 15:27:07,294 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:27:07" (1/1) ... [2021-11-22 15:27:07,304 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 15:27:07,305 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 15:27:07,306 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 15:27:07,306 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 15:27:07,307 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:27:07" (1/1) ... [2021-11-22 15:27:07,316 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:27:07,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1951273a-5e9f-4333-8acf-35fc821c5939/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:27:07,349 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1951273a-5e9f-4333-8acf-35fc821c5939/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 15:27:07,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1951273a-5e9f-4333-8acf-35fc821c5939/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 15:27:07,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 15:27:07,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 15:27:07,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 15:27:07,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 15:27:07,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 15:27:07,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 15:27:07,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 15:27:07,504 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 15:27:07,506 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 15:27:07,791 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 15:27:07,797 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 15:27:07,797 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-22 15:27:07,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:27:07 BoogieIcfgContainer [2021-11-22 15:27:07,799 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 15:27:07,801 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 15:27:07,801 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 15:27:07,804 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 15:27:07,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:27:06" (1/3) ... [2021-11-22 15:27:07,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34acf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:27:07, skipping insertion in model container [2021-11-22 15:27:07,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:27:07" (2/3) ... [2021-11-22 15:27:07,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34acf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:27:07, skipping insertion in model container [2021-11-22 15:27:07,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:27:07" (3/3) ... [2021-11-22 15:27:07,807 INFO L111 eAbstractionObserver]: Analyzing ICFG elimination_max.c [2021-11-22 15:27:07,813 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 15:27:07,813 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2021-11-22 15:27:07,876 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 15:27:07,893 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 [2021-11-22 15:27:07,894 INFO L340 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2021-11-22 15:27:07,916 INFO L276 IsEmpty]: Start isEmpty. Operand has 50 states, 31 states have (on average 1.8709677419354838) internal successors, (58), 49 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:07,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-22 15:27:07,924 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:07,925 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:07,925 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-11-22 15:27:07,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:07,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1804965574, now seen corresponding path program 1 times [2021-11-22 15:27:07,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:07,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117903959] [2021-11-22 15:27:07,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:07,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:08,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:08,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:27:08,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:08,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117903959] [2021-11-22 15:27:08,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117903959] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:27:08,140 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:27:08,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:27:08,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293769287] [2021-11-22 15:27:08,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:27:08,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 15:27:08,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:08,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 15:27:08,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 15:27:08,188 INFO L87 Difference]: Start difference. First operand has 50 states, 31 states have (on average 1.8709677419354838) internal successors, (58), 49 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:08,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:27:08,206 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2021-11-22 15:27:08,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 15:27:08,210 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-22 15:27:08,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:27:08,218 INFO L225 Difference]: With dead ends: 50 [2021-11-22 15:27:08,219 INFO L226 Difference]: Without dead ends: 48 [2021-11-22 15:27:08,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 15:27:08,227 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:27:08,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:27:08,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-11-22 15:27:08,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-11-22 15:27:08,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 47 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:08,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2021-11-22 15:27:08,273 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 7 [2021-11-22 15:27:08,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:27:08,274 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2021-11-22 15:27:08,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:08,275 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2021-11-22 15:27:08,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-22 15:27:08,276 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:08,276 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:08,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 15:27:08,277 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-11-22 15:27:08,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:08,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1806812616, now seen corresponding path program 1 times [2021-11-22 15:27:08,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:08,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863689972] [2021-11-22 15:27:08,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:08,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:08,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:08,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:27:08,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:08,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863689972] [2021-11-22 15:27:08,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863689972] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:27:08,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:27:08,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:27:08,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941711372] [2021-11-22 15:27:08,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:27:08,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:27:08,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:08,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:27:08,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:27:08,418 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:08,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:27:08,479 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2021-11-22 15:27:08,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:27:08,480 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-22 15:27:08,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:27:08,482 INFO L225 Difference]: With dead ends: 41 [2021-11-22 15:27:08,482 INFO L226 Difference]: Without dead ends: 41 [2021-11-22 15:27:08,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:27:08,484 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 72 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:27:08,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 29 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:27:08,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-11-22 15:27:08,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-11-22 15:27:08,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 30 states have (on average 1.4333333333333333) internal successors, (43), 40 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:08,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2021-11-22 15:27:08,491 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 7 [2021-11-22 15:27:08,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:27:08,492 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2021-11-22 15:27:08,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:08,492 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2021-11-22 15:27:08,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-22 15:27:08,493 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:08,493 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:08,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 15:27:08,517 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-11-22 15:27:08,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:08,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1806812617, now seen corresponding path program 1 times [2021-11-22 15:27:08,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:08,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678667452] [2021-11-22 15:27:08,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:08,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:08,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:08,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:27:08,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:08,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678667452] [2021-11-22 15:27:08,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678667452] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:27:08,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:27:08,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:27:08,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674039081] [2021-11-22 15:27:08,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:27:08,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:27:08,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:08,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:27:08,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:27:08,684 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:08,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:27:08,959 INFO L93 Difference]: Finished difference Result 103 states and 108 transitions. [2021-11-22 15:27:08,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:27:08,960 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-22 15:27:08,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:27:08,963 INFO L225 Difference]: With dead ends: 103 [2021-11-22 15:27:08,963 INFO L226 Difference]: Without dead ends: 103 [2021-11-22 15:27:08,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:27:08,969 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 138 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:27:08,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 65 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:27:08,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-11-22 15:27:08,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 77. [2021-11-22 15:27:08,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 66 states have (on average 1.4393939393939394) internal successors, (95), 76 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:08,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 95 transitions. [2021-11-22 15:27:08,990 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 95 transitions. Word has length 7 [2021-11-22 15:27:08,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:27:08,991 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 95 transitions. [2021-11-22 15:27:08,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:08,991 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 95 transitions. [2021-11-22 15:27:08,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-22 15:27:08,992 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:08,992 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:08,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 15:27:08,993 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-11-22 15:27:08,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:08,995 INFO L85 PathProgramCache]: Analyzing trace with hash 176616243, now seen corresponding path program 1 times [2021-11-22 15:27:08,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:08,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864958339] [2021-11-22 15:27:08,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:08,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:09,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:09,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:27:09,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:09,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864958339] [2021-11-22 15:27:09,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864958339] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:27:09,194 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:27:09,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:27:09,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270900252] [2021-11-22 15:27:09,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:27:09,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:27:09,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:09,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:27:09,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:27:09,197 INFO L87 Difference]: Start difference. First operand 77 states and 95 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:09,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:27:09,389 INFO L93 Difference]: Finished difference Result 124 states and 136 transitions. [2021-11-22 15:27:09,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:27:09,390 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-22 15:27:09,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:27:09,396 INFO L225 Difference]: With dead ends: 124 [2021-11-22 15:27:09,396 INFO L226 Difference]: Without dead ends: 124 [2021-11-22 15:27:09,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:27:09,408 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 178 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:27:09,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 65 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:27:09,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-11-22 15:27:09,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 81. [2021-11-22 15:27:09,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 70 states have (on average 1.4428571428571428) internal successors, (101), 80 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:09,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 101 transitions. [2021-11-22 15:27:09,429 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 101 transitions. Word has length 8 [2021-11-22 15:27:09,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:27:09,429 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 101 transitions. [2021-11-22 15:27:09,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:09,430 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 101 transitions. [2021-11-22 15:27:09,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-22 15:27:09,430 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:09,431 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:09,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 15:27:09,432 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-11-22 15:27:09,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:09,433 INFO L85 PathProgramCache]: Analyzing trace with hash -2071866700, now seen corresponding path program 1 times [2021-11-22 15:27:09,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:09,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217707162] [2021-11-22 15:27:09,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:09,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:09,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:09,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:27:09,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:09,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217707162] [2021-11-22 15:27:09,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217707162] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:27:09,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:27:09,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:27:09,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759633083] [2021-11-22 15:27:09,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:27:09,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:27:09,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:09,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:27:09,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:27:09,620 INFO L87 Difference]: Start difference. First operand 81 states and 101 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:09,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:27:09,752 INFO L93 Difference]: Finished difference Result 85 states and 103 transitions. [2021-11-22 15:27:09,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:27:09,753 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-22 15:27:09,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:27:09,754 INFO L225 Difference]: With dead ends: 85 [2021-11-22 15:27:09,754 INFO L226 Difference]: Without dead ends: 85 [2021-11-22 15:27:09,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:27:09,756 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 92 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:27:09,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 33 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:27:09,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-11-22 15:27:09,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 67. [2021-11-22 15:27:09,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 58 states have (on average 1.3620689655172413) internal successors, (79), 66 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:09,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 79 transitions. [2021-11-22 15:27:09,762 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 79 transitions. Word has length 10 [2021-11-22 15:27:09,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:27:09,763 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 79 transitions. [2021-11-22 15:27:09,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:09,763 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 79 transitions. [2021-11-22 15:27:09,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-22 15:27:09,764 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:09,764 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:09,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 15:27:09,765 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-11-22 15:27:09,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:09,765 INFO L85 PathProgramCache]: Analyzing trace with hash 196641727, now seen corresponding path program 1 times [2021-11-22 15:27:09,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:09,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161113785] [2021-11-22 15:27:09,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:09,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:09,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:09,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:27:09,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:09,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161113785] [2021-11-22 15:27:09,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161113785] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:27:09,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:27:09,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:27:09,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782937883] [2021-11-22 15:27:09,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:27:09,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:27:09,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:09,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:27:09,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:27:09,842 INFO L87 Difference]: Start difference. First operand 67 states and 79 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:09,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:27:09,921 INFO L93 Difference]: Finished difference Result 96 states and 108 transitions. [2021-11-22 15:27:09,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:27:09,921 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-22 15:27:09,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:27:09,922 INFO L225 Difference]: With dead ends: 96 [2021-11-22 15:27:09,923 INFO L226 Difference]: Without dead ends: 96 [2021-11-22 15:27:09,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:27:09,924 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 99 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:27:09,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 73 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:27:09,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-11-22 15:27:09,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 66. [2021-11-22 15:27:09,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 57 states have (on average 1.3508771929824561) internal successors, (77), 65 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:09,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 77 transitions. [2021-11-22 15:27:09,931 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 77 transitions. Word has length 11 [2021-11-22 15:27:09,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:27:09,931 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 77 transitions. [2021-11-22 15:27:09,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:09,932 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 77 transitions. [2021-11-22 15:27:09,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-22 15:27:09,932 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:09,933 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:09,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 15:27:09,933 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-11-22 15:27:09,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:09,934 INFO L85 PathProgramCache]: Analyzing trace with hash 239526543, now seen corresponding path program 1 times [2021-11-22 15:27:09,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:09,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225233677] [2021-11-22 15:27:09,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:09,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:09,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:10,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:27:10,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:10,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225233677] [2021-11-22 15:27:10,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225233677] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:27:10,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155234103] [2021-11-22 15:27:10,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:10,038 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:27:10,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1951273a-5e9f-4333-8acf-35fc821c5939/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:27:10,046 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1951273a-5e9f-4333-8acf-35fc821c5939/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:27:10,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1951273a-5e9f-4333-8acf-35fc821c5939/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 15:27:10,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:10,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-22 15:27:10,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:27:10,394 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:27:10,395 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:27:10,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155234103] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:27:10,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 15:27:10,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 10 [2021-11-22 15:27:10,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698665753] [2021-11-22 15:27:10,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:27:10,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 15:27:10,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:10,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 15:27:10,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-22 15:27:10,397 INFO L87 Difference]: Start difference. First operand 66 states and 77 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:10,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:27:10,599 INFO L93 Difference]: Finished difference Result 136 states and 144 transitions. [2021-11-22 15:27:10,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 15:27:10,600 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-22 15:27:10,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:27:10,601 INFO L225 Difference]: With dead ends: 136 [2021-11-22 15:27:10,601 INFO L226 Difference]: Without dead ends: 136 [2021-11-22 15:27:10,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-11-22 15:27:10,602 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 154 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:27:10,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 150 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:27:10,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-11-22 15:27:10,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 66. [2021-11-22 15:27:10,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 58 states have (on average 1.3275862068965518) internal successors, (77), 65 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:10,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 77 transitions. [2021-11-22 15:27:10,608 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 77 transitions. Word has length 11 [2021-11-22 15:27:10,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:27:10,608 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 77 transitions. [2021-11-22 15:27:10,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:10,608 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 77 transitions. [2021-11-22 15:27:10,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-22 15:27:10,609 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:10,610 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:10,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1951273a-5e9f-4333-8acf-35fc821c5939/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-22 15:27:10,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1951273a-5e9f-4333-8acf-35fc821c5939/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:27:10,833 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-11-22 15:27:10,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:10,834 INFO L85 PathProgramCache]: Analyzing trace with hash -181712522, now seen corresponding path program 1 times [2021-11-22 15:27:10,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:10,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214872898] [2021-11-22 15:27:10,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:10,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:10,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:10,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:27:10,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:10,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214872898] [2021-11-22 15:27:10,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214872898] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:27:10,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:27:10,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-22 15:27:10,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677931314] [2021-11-22 15:27:10,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:27:10,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 15:27:10,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:10,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 15:27:10,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-22 15:27:10,947 INFO L87 Difference]: Start difference. First operand 66 states and 77 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:11,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:27:11,057 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2021-11-22 15:27:11,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-22 15:27:11,058 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-22 15:27:11,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:27:11,059 INFO L225 Difference]: With dead ends: 64 [2021-11-22 15:27:11,059 INFO L226 Difference]: Without dead ends: 64 [2021-11-22 15:27:11,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-22 15:27:11,060 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 88 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:27:11,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 71 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:27:11,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-11-22 15:27:11,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-11-22 15:27:11,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 57 states have (on average 1.2982456140350878) internal successors, (74), 63 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:11,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 74 transitions. [2021-11-22 15:27:11,065 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 74 transitions. Word has length 14 [2021-11-22 15:27:11,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:27:11,066 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 74 transitions. [2021-11-22 15:27:11,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:11,066 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 74 transitions. [2021-11-22 15:27:11,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-22 15:27:11,067 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:11,067 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:11,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-22 15:27:11,067 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-11-22 15:27:11,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:11,068 INFO L85 PathProgramCache]: Analyzing trace with hash -247083643, now seen corresponding path program 1 times [2021-11-22 15:27:11,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:11,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980954302] [2021-11-22 15:27:11,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:11,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:11,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:11,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:27:11,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:11,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980954302] [2021-11-22 15:27:11,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980954302] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:27:11,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429120914] [2021-11-22 15:27:11,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:11,194 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:27:11,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1951273a-5e9f-4333-8acf-35fc821c5939/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:27:11,195 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1951273a-5e9f-4333-8acf-35fc821c5939/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:27:11,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1951273a-5e9f-4333-8acf-35fc821c5939/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-22 15:27:11,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:11,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-22 15:27:11,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:27:11,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:27:11,444 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:27:11,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429120914] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:27:11,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 15:27:11,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2021-11-22 15:27:11,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890440206] [2021-11-22 15:27:11,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:27:11,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 15:27:11,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:11,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 15:27:11,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-11-22 15:27:11,446 INFO L87 Difference]: Start difference. First operand 64 states and 74 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:11,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:27:11,774 INFO L93 Difference]: Finished difference Result 129 states and 137 transitions. [2021-11-22 15:27:11,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-22 15:27:11,774 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-22 15:27:11,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:27:11,775 INFO L225 Difference]: With dead ends: 129 [2021-11-22 15:27:11,775 INFO L226 Difference]: Without dead ends: 129 [2021-11-22 15:27:11,776 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2021-11-22 15:27:11,776 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 117 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:27:11,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 193 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:27:11,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-11-22 15:27:11,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 44. [2021-11-22 15:27:11,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 39 states have (on average 1.2820512820512822) internal successors, (50), 43 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:11,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2021-11-22 15:27:11,780 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 15 [2021-11-22 15:27:11,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:27:11,780 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2021-11-22 15:27:11,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:11,780 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2021-11-22 15:27:11,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-22 15:27:11,784 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:11,784 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:11,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1951273a-5e9f-4333-8acf-35fc821c5939/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-22 15:27:11,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1951273a-5e9f-4333-8acf-35fc821c5939/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:27:11,993 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-11-22 15:27:11,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:11,994 INFO L85 PathProgramCache]: Analyzing trace with hash -2035136795, now seen corresponding path program 1 times [2021-11-22 15:27:11,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:11,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997733494] [2021-11-22 15:27:11,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:11,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:12,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:12,088 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:27:12,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:12,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997733494] [2021-11-22 15:27:12,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997733494] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:27:12,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10007867] [2021-11-22 15:27:12,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:12,090 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:27:12,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1951273a-5e9f-4333-8acf-35fc821c5939/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:27:12,091 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1951273a-5e9f-4333-8acf-35fc821c5939/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:27:12,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1951273a-5e9f-4333-8acf-35fc821c5939/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-22 15:27:12,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:12,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-22 15:27:12,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:27:12,331 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:27:12,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:27:12,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 41 [2021-11-22 15:27:12,717 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:27:12,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10007867] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:27:12,718 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:27:12,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 20 [2021-11-22 15:27:12,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483975735] [2021-11-22 15:27:12,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:27:12,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-22 15:27:12,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:12,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-22 15:27:12,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2021-11-22 15:27:12,720 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand has 20 states, 20 states have (on average 2.1) internal successors, (42), 20 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:13,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:27:13,142 INFO L93 Difference]: Finished difference Result 65 states and 67 transitions. [2021-11-22 15:27:13,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-22 15:27:13,143 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.1) internal successors, (42), 20 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-22 15:27:13,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:27:13,143 INFO L225 Difference]: With dead ends: 65 [2021-11-22 15:27:13,143 INFO L226 Difference]: Without dead ends: 65 [2021-11-22 15:27:13,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=210, Invalid=602, Unknown=0, NotChecked=0, Total=812 [2021-11-22 15:27:13,145 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 277 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:27:13,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 200 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:27:13,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-11-22 15:27:13,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 35. [2021-11-22 15:27:13,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 34 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:13,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2021-11-22 15:27:13,148 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 16 [2021-11-22 15:27:13,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:27:13,148 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2021-11-22 15:27:13,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.1) internal successors, (42), 20 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:13,148 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2021-11-22 15:27:13,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-22 15:27:13,149 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:13,149 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:13,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1951273a-5e9f-4333-8acf-35fc821c5939/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-22 15:27:13,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1951273a-5e9f-4333-8acf-35fc821c5939/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:27:13,361 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-11-22 15:27:13,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:13,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1344801372, now seen corresponding path program 1 times [2021-11-22 15:27:13,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:13,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725895481] [2021-11-22 15:27:13,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:13,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:13,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:13,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:27:13,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:13,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725895481] [2021-11-22 15:27:13,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725895481] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:27:13,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:27:13,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-22 15:27:13,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073265735] [2021-11-22 15:27:13,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:27:13,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 15:27:13,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:13,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 15:27:13,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-22 15:27:13,481 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:13,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:27:13,573 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2021-11-22 15:27:13,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 15:27:13,574 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-22 15:27:13,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:27:13,574 INFO L225 Difference]: With dead ends: 33 [2021-11-22 15:27:13,574 INFO L226 Difference]: Without dead ends: 33 [2021-11-22 15:27:13,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-11-22 15:27:13,576 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 70 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:27:13,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 60 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:27:13,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-11-22 15:27:13,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-11-22 15:27:13,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 32 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:13,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2021-11-22 15:27:13,578 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 20 [2021-11-22 15:27:13,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:27:13,579 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2021-11-22 15:27:13,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:13,579 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2021-11-22 15:27:13,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-22 15:27:13,580 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:13,580 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:13,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-22 15:27:13,580 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-11-22 15:27:13,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:13,581 INFO L85 PathProgramCache]: Analyzing trace with hash -473336965, now seen corresponding path program 1 times [2021-11-22 15:27:13,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:13,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857350902] [2021-11-22 15:27:13,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:13,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:13,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:13,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:27:13,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:13,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857350902] [2021-11-22 15:27:13,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857350902] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:27:13,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755054710] [2021-11-22 15:27:13,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:13,649 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:27:13,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1951273a-5e9f-4333-8acf-35fc821c5939/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:27:13,650 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1951273a-5e9f-4333-8acf-35fc821c5939/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:27:13,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1951273a-5e9f-4333-8acf-35fc821c5939/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-22 15:27:13,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:13,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-22 15:27:13,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:27:13,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:27:13,814 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:27:13,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755054710] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:27:13,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 15:27:13,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2021-11-22 15:27:13,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260920605] [2021-11-22 15:27:13,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:27:13,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:27:13,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:13,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:27:13,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-22 15:27:13,819 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:13,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:27:13,885 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2021-11-22 15:27:13,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:27:13,886 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-22 15:27:13,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:27:13,888 INFO L225 Difference]: With dead ends: 59 [2021-11-22 15:27:13,888 INFO L226 Difference]: Without dead ends: 59 [2021-11-22 15:27:13,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-11-22 15:27:13,890 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 43 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:27:13,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 70 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:27:13,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-11-22 15:27:13,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 50. [2021-11-22 15:27:13,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 49 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:13,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2021-11-22 15:27:13,900 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 23 [2021-11-22 15:27:13,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:27:13,901 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2021-11-22 15:27:13,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:13,901 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2021-11-22 15:27:13,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-22 15:27:13,906 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:13,906 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:13,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1951273a-5e9f-4333-8acf-35fc821c5939/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-22 15:27:14,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1951273a-5e9f-4333-8acf-35fc821c5939/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-22 15:27:14,121 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-11-22 15:27:14,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:14,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1788545238, now seen corresponding path program 1 times [2021-11-22 15:27:14,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:14,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175585434] [2021-11-22 15:27:14,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:14,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:14,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:14,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 15:27:14,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:14,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175585434] [2021-11-22 15:27:14,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175585434] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:27:14,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:27:14,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:27:14,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799020872] [2021-11-22 15:27:14,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:27:14,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:27:14,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:14,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:27:14,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:27:14,155 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:14,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:27:14,174 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions. [2021-11-22 15:27:14,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:27:14,175 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-22 15:27:14,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:27:14,176 INFO L225 Difference]: With dead ends: 49 [2021-11-22 15:27:14,176 INFO L226 Difference]: Without dead ends: 49 [2021-11-22 15:27:14,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:27:14,179 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 35 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:27:14,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 23 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:27:14,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-11-22 15:27:14,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-11-22 15:27:14,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 47 states have (on average 1.0851063829787233) internal successors, (51), 48 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:14,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2021-11-22 15:27:14,182 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 24 [2021-11-22 15:27:14,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:27:14,182 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2021-11-22 15:27:14,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:14,183 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2021-11-22 15:27:14,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-22 15:27:14,183 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:14,184 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:14,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-22 15:27:14,184 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-11-22 15:27:14,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:14,185 INFO L85 PathProgramCache]: Analyzing trace with hash -805051347, now seen corresponding path program 1 times [2021-11-22 15:27:14,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:14,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062091158] [2021-11-22 15:27:14,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:14,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:14,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:14,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 15:27:14,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:14,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062091158] [2021-11-22 15:27:14,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062091158] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:27:14,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:27:14,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:27:14,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390217281] [2021-11-22 15:27:14,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:27:14,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:27:14,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:14,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:27:14,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:27:14,253 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:14,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:27:14,291 INFO L93 Difference]: Finished difference Result 48 states and 50 transitions. [2021-11-22 15:27:14,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:27:14,292 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-22 15:27:14,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:27:14,292 INFO L225 Difference]: With dead ends: 48 [2021-11-22 15:27:14,293 INFO L226 Difference]: Without dead ends: 28 [2021-11-22 15:27:14,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:27:14,294 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 30 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:27:14,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 37 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:27:14,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-22 15:27:14,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-11-22 15:27:14,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 27 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:14,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2021-11-22 15:27:14,296 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 26 [2021-11-22 15:27:14,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:27:14,296 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2021-11-22 15:27:14,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:14,296 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2021-11-22 15:27:14,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-22 15:27:14,299 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:14,299 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:14,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-22 15:27:14,300 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-11-22 15:27:14,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:14,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1274526655, now seen corresponding path program 1 times [2021-11-22 15:27:14,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:14,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786671570] [2021-11-22 15:27:14,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:14,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:14,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:14,442 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:27:14,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:14,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786671570] [2021-11-22 15:27:14,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786671570] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:27:14,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106361922] [2021-11-22 15:27:14,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:14,443 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:27:14,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1951273a-5e9f-4333-8acf-35fc821c5939/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:27:14,445 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1951273a-5e9f-4333-8acf-35fc821c5939/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:27:14,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1951273a-5e9f-4333-8acf-35fc821c5939/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-22 15:27:14,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:14,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-22 15:27:14,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:27:14,758 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:27:14,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:27:14,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-11-22 15:27:15,019 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:27:15,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106361922] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:27:15,019 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:27:15,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 20 [2021-11-22 15:27:15,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323605226] [2021-11-22 15:27:15,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:27:15,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-22 15:27:15,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:15,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-22 15:27:15,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2021-11-22 15:27:15,022 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 21 states, 20 states have (on average 3.75) internal successors, (75), 21 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:15,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:27:15,318 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2021-11-22 15:27:15,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 15:27:15,319 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.75) internal successors, (75), 21 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-22 15:27:15,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:27:15,319 INFO L225 Difference]: With dead ends: 43 [2021-11-22 15:27:15,319 INFO L226 Difference]: Without dead ends: 43 [2021-11-22 15:27:15,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=161, Invalid=541, Unknown=0, NotChecked=0, Total=702 [2021-11-22 15:27:15,321 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 305 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:27:15,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [305 Valid, 69 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:27:15,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-22 15:27:15,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 35. [2021-11-22 15:27:15,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 34 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:15,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2021-11-22 15:27:15,323 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 27 [2021-11-22 15:27:15,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:27:15,323 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2021-11-22 15:27:15,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.75) internal successors, (75), 21 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:15,323 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2021-11-22 15:27:15,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-22 15:27:15,324 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:15,324 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:15,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1951273a-5e9f-4333-8acf-35fc821c5939/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-22 15:27:15,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1951273a-5e9f-4333-8acf-35fc821c5939/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:27:15,525 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-11-22 15:27:15,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:15,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1039481356, now seen corresponding path program 2 times [2021-11-22 15:27:15,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:15,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155526562] [2021-11-22 15:27:15,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:15,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:15,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:15,590 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:27:15,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:15,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155526562] [2021-11-22 15:27:15,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155526562] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:27:15,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431402919] [2021-11-22 15:27:15,591 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 15:27:15,591 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:27:15,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1951273a-5e9f-4333-8acf-35fc821c5939/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:27:15,593 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1951273a-5e9f-4333-8acf-35fc821c5939/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:27:15,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1951273a-5e9f-4333-8acf-35fc821c5939/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-22 15:27:15,654 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-22 15:27:15,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 15:27:15,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-22 15:27:15,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:27:15,817 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:27:15,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:27:15,925 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:27:15,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431402919] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:27:15,926 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:27:15,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2021-11-22 15:27:15,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118235854] [2021-11-22 15:27:15,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:27:15,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-22 15:27:15,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:15,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-22 15:27:15,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2021-11-22 15:27:15,928 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand has 16 states, 16 states have (on average 4.375) internal successors, (70), 16 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:16,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:27:16,061 INFO L93 Difference]: Finished difference Result 65 states and 66 transitions. [2021-11-22 15:27:16,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 15:27:16,065 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.375) internal successors, (70), 16 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-22 15:27:16,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:27:16,066 INFO L225 Difference]: With dead ends: 65 [2021-11-22 15:27:16,066 INFO L226 Difference]: Without dead ends: 42 [2021-11-22 15:27:16,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2021-11-22 15:27:16,067 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 49 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:27:16,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 145 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:27:16,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-11-22 15:27:16,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2021-11-22 15:27:16,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 38 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:16,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2021-11-22 15:27:16,069 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 34 [2021-11-22 15:27:16,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:27:16,069 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2021-11-22 15:27:16,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.375) internal successors, (70), 16 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:16,070 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2021-11-22 15:27:16,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-22 15:27:16,073 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:27:16,073 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:16,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1951273a-5e9f-4333-8acf-35fc821c5939/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-22 15:27:16,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1951273a-5e9f-4333-8acf-35fc821c5939/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-22 15:27:16,285 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 14 more)] === [2021-11-22 15:27:16,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:27:16,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1221582190, now seen corresponding path program 3 times [2021-11-22 15:27:16,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:27:16,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527241190] [2021-11-22 15:27:16,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:27:16,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:27:16,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:27:16,480 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:27:16,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:27:16,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527241190] [2021-11-22 15:27:16,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527241190] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:27:16,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207974454] [2021-11-22 15:27:16,481 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-22 15:27:16,481 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:27:16,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1951273a-5e9f-4333-8acf-35fc821c5939/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:27:16,489 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1951273a-5e9f-4333-8acf-35fc821c5939/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:27:16,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1951273a-5e9f-4333-8acf-35fc821c5939/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-22 15:27:16,539 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-22 15:27:16,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 15:27:16,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-22 15:27:16,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:27:16,756 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-22 15:27:16,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:27:17,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 51 [2021-11-22 15:27:17,192 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-22 15:27:17,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207974454] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:27:17,193 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:27:17,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 19 [2021-11-22 15:27:17,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057605003] [2021-11-22 15:27:17,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:27:17,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-22 15:27:17,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:27:17,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-22 15:27:17,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2021-11-22 15:27:17,198 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 20 states, 19 states have (on average 4.578947368421052) internal successors, (87), 20 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:17,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:27:17,711 INFO L93 Difference]: Finished difference Result 50 states and 51 transitions. [2021-11-22 15:27:17,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-22 15:27:17,711 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.578947368421052) internal successors, (87), 20 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-22 15:27:17,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:27:17,712 INFO L225 Difference]: With dead ends: 50 [2021-11-22 15:27:17,712 INFO L226 Difference]: Without dead ends: 0 [2021-11-22 15:27:17,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=234, Invalid=636, Unknown=0, NotChecked=0, Total=870 [2021-11-22 15:27:17,713 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 213 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:27:17,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 85 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:27:17,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-22 15:27:17,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-22 15:27:17,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:17,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-22 15:27:17,715 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2021-11-22 15:27:17,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:27:17,715 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-22 15:27:17,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.578947368421052) internal successors, (87), 20 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:27:17,715 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-22 15:27:17,715 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-22 15:27:17,718 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION (17 of 18 remaining) [2021-11-22 15:27:17,718 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION (16 of 18 remaining) [2021-11-22 15:27:17,718 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATION (15 of 18 remaining) [2021-11-22 15:27:17,718 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATION (14 of 18 remaining) [2021-11-22 15:27:17,719 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATION (13 of 18 remaining) [2021-11-22 15:27:17,719 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATION (12 of 18 remaining) [2021-11-22 15:27:17,719 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATION (11 of 18 remaining) [2021-11-22 15:27:17,719 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATION (10 of 18 remaining) [2021-11-22 15:27:17,719 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (9 of 18 remaining) [2021-11-22 15:27:17,719 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATION (8 of 18 remaining) [2021-11-22 15:27:17,720 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATION (7 of 18 remaining) [2021-11-22 15:27:17,720 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATION (6 of 18 remaining) [2021-11-22 15:27:17,720 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATION (5 of 18 remaining) [2021-11-22 15:27:17,720 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK (4 of 18 remaining) [2021-11-22 15:27:17,720 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE (3 of 18 remaining) [2021-11-22 15:27:17,720 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE (2 of 18 remaining) [2021-11-22 15:27:17,721 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE (1 of 18 remaining) [2021-11-22 15:27:17,721 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK (0 of 18 remaining) [2021-11-22 15:27:17,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1951273a-5e9f-4333-8acf-35fc821c5939/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-22 15:27:17,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1951273a-5e9f-4333-8acf-35fc821c5939/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-22 15:27:17,944 INFO L732 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:27:17,946 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-22 15:27:17,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 03:27:17 BoogieIcfgContainer [2021-11-22 15:27:17,949 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-22 15:27:17,950 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-22 15:27:17,950 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-22 15:27:17,950 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-22 15:27:17,950 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:27:07" (3/4) ... [2021-11-22 15:27:17,952 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-22 15:27:17,962 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-11-22 15:27:17,962 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-22 15:27:17,963 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-22 15:27:17,963 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-22 15:27:18,006 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1951273a-5e9f-4333-8acf-35fc821c5939/bin/uautomizer-w2VwFs6gM0/witness.graphml [2021-11-22 15:27:18,006 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-22 15:27:18,007 INFO L158 Benchmark]: Toolchain (without parser) took 11182.49ms. Allocated memory was 132.1MB in the beginning and 165.7MB in the end (delta: 33.6MB). Free memory was 98.5MB in the beginning and 121.6MB in the end (delta: -23.1MB). Peak memory consumption was 11.3MB. Max. memory is 16.1GB. [2021-11-22 15:27:18,007 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 83.9MB. Free memory was 44.5MB in the beginning and 44.5MB in the end (delta: 40.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 15:27:18,007 INFO L158 Benchmark]: CACSL2BoogieTranslator took 348.63ms. Allocated memory is still 132.1MB. Free memory was 98.3MB in the beginning and 107.1MB in the end (delta: -8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-22 15:27:18,008 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.35ms. Allocated memory is still 132.1MB. Free memory was 107.1MB in the beginning and 105.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 15:27:18,008 INFO L158 Benchmark]: Boogie Preprocessor took 58.77ms. Allocated memory is still 132.1MB. Free memory was 105.6MB in the beginning and 104.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 15:27:18,008 INFO L158 Benchmark]: RCFGBuilder took 494.05ms. Allocated memory is still 132.1MB. Free memory was 104.2MB in the beginning and 91.5MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-22 15:27:18,009 INFO L158 Benchmark]: TraceAbstraction took 10148.32ms. Allocated memory was 132.1MB in the beginning and 165.7MB in the end (delta: 33.6MB). Free memory was 91.0MB in the beginning and 125.5MB in the end (delta: -34.5MB). Peak memory consumption was 1.9MB. Max. memory is 16.1GB. [2021-11-22 15:27:18,009 INFO L158 Benchmark]: Witness Printer took 56.42ms. Allocated memory is still 165.7MB. Free memory was 125.5MB in the beginning and 121.6MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-22 15:27:18,011 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 83.9MB. Free memory was 44.5MB in the beginning and 44.5MB in the end (delta: 40.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 348.63ms. Allocated memory is still 132.1MB. Free memory was 98.3MB in the beginning and 107.1MB in the end (delta: -8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.35ms. Allocated memory is still 132.1MB. Free memory was 107.1MB in the beginning and 105.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 58.77ms. Allocated memory is still 132.1MB. Free memory was 105.6MB in the beginning and 104.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 494.05ms. Allocated memory is still 132.1MB. Free memory was 104.2MB in the beginning and 91.5MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 10148.32ms. Allocated memory was 132.1MB in the beginning and 165.7MB in the end (delta: 33.6MB). Free memory was 91.0MB in the beginning and 125.5MB in the end (delta: -34.5MB). Peak memory consumption was 1.9MB. Max. memory is 16.1GB. * Witness Printer took 56.42ms. Allocated memory is still 165.7MB. Free memory was 125.5MB in the beginning and 121.6MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 35]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 35]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 35]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 35]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 43]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 43]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 43]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 43]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 11]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 46]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 46]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 46]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 46]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 11]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 48]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 48]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 48]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 16]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 50 locations, 18 error locations. Started 1 CEGAR loops. OverallTime: 10.1s, OverallIterations: 17, TraceHistogramMax: 3, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1960 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1960 mSDsluCounter, 1420 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 918 mSDsCounter, 171 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1494 IncrementalHoareTripleChecker+Invalid, 1665 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 171 mSolverCounterUnsat, 502 mSDtfsCounter, 1494 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 434 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred in iteration=4, InterpolantAutomatonStates: 119, 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, 17 MinimizatonAttempts, 322 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 462 NumberOfCodeBlocks, 451 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 549 ConstructedInterpolants, 0 QuantifiedInterpolants, 5232 SizeOfPredicates, 31 NumberOfNonLiveVariables, 793 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 28 InterpolantComputations, 13 PerfectInterpolantSequences, 69/138 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 18 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-11-22 15:27:18,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1951273a-5e9f-4333-8acf-35fc821c5939/bin/uautomizer-w2VwFs6gM0/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 Result: TRUE