./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext-properties/test-0158_1-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e3b08ec6-e815-47c9-9ec6-44f0e41e6eeb/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e3b08ec6-e815-47c9-9ec6-44f0e41e6eeb/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e3b08ec6-e815-47c9-9ec6-44f0e41e6eeb/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e3b08ec6-e815-47c9-9ec6-44f0e41e6eeb/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/test-0158_1-3.i -s /tmp/vcloud-vcloud-master/worker/run_dir_e3b08ec6-e815-47c9-9ec6-44f0e41e6eeb/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e3b08ec6-e815-47c9-9ec6-44f0e41e6eeb/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 816de43cb6e982d6a1f876f61d346a36add599ac ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-free) --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 06:09:42,344 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 06:09:42,348 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 06:09:42,369 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 06:09:42,369 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 06:09:42,370 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 06:09:42,372 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 06:09:42,373 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 06:09:42,375 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 06:09:42,376 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 06:09:42,377 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 06:09:42,377 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 06:09:42,378 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 06:09:42,379 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 06:09:42,380 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 06:09:42,381 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 06:09:42,381 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 06:09:42,382 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 06:09:42,383 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 06:09:42,385 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 06:09:42,386 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 06:09:42,388 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 06:09:42,389 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 06:09:42,389 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 06:09:42,392 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 06:09:42,392 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 06:09:42,392 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 06:09:42,393 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 06:09:42,393 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 06:09:42,394 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 06:09:42,395 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 06:09:42,395 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 06:09:42,396 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 06:09:42,396 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 06:09:42,397 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 06:09:42,397 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 06:09:42,398 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 06:09:42,398 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 06:09:42,398 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 06:09:42,399 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 06:09:42,399 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 06:09:42,400 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e3b08ec6-e815-47c9-9ec6-44f0e41e6eeb/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-12-09 06:09:42,417 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 06:09:42,417 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 06:09:42,418 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 06:09:42,418 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 06:09:42,418 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 06:09:42,418 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 06:09:42,418 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 06:09:42,418 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 06:09:42,418 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 06:09:42,418 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 06:09:42,419 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 06:09:42,419 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 06:09:42,419 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 06:09:42,419 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 06:09:42,419 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 06:09:42,420 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-09 06:09:42,420 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-09 06:09:42,420 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 06:09:42,420 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 06:09:42,420 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 06:09:42,420 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 06:09:42,420 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 06:09:42,420 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 06:09:42,421 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-09 06:09:42,421 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-09 06:09:42,421 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-09 06:09:42,421 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 06:09:42,421 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 06:09:42,421 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 06:09:42,421 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 06:09:42,421 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 06:09:42,422 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 06:09:42,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 06:09:42,422 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 06:09:42,422 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 06:09:42,422 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 06:09:42,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 06:09:42,422 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 06:09:42,422 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 06:09:42,423 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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-vcloud-master/worker/run_dir_e3b08ec6-e815-47c9-9ec6-44f0e41e6eeb/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e3b08ec6-e815-47c9-9ec6-44f0e41e6eeb/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 816de43cb6e982d6a1f876f61d346a36add599ac [2020-12-09 06:09:42,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 06:09:42,602 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 06:09:42,604 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 06:09:42,604 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 06:09:42,605 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 06:09:42,606 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e3b08ec6-e815-47c9-9ec6-44f0e41e6eeb/bin/utaipan/../../sv-benchmarks/c/list-ext-properties/test-0158_1-3.i [2020-12-09 06:09:42,646 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e3b08ec6-e815-47c9-9ec6-44f0e41e6eeb/bin/utaipan/data/ef6981ee2/c0b35f7bb6354a9fae0bb846b7e5b50b/FLAGc81812907 [2020-12-09 06:09:43,065 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 06:09:43,066 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e3b08ec6-e815-47c9-9ec6-44f0e41e6eeb/sv-benchmarks/c/list-ext-properties/test-0158_1-3.i [2020-12-09 06:09:43,075 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e3b08ec6-e815-47c9-9ec6-44f0e41e6eeb/bin/utaipan/data/ef6981ee2/c0b35f7bb6354a9fae0bb846b7e5b50b/FLAGc81812907 [2020-12-09 06:09:43,084 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e3b08ec6-e815-47c9-9ec6-44f0e41e6eeb/bin/utaipan/data/ef6981ee2/c0b35f7bb6354a9fae0bb846b7e5b50b [2020-12-09 06:09:43,086 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 06:09:43,087 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 06:09:43,088 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 06:09:43,089 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 06:09:43,091 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 06:09:43,091 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:09:43" (1/1) ... [2020-12-09 06:09:43,093 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@452112a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:09:43, skipping insertion in model container [2020-12-09 06:09:43,093 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:09:43" (1/1) ... [2020-12-09 06:09:43,100 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 06:09:43,128 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 06:09:43,332 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:09:43,339 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 06:09:43,377 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:09:43,426 INFO L208 MainTranslator]: Completed translation [2020-12-09 06:09:43,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:09:43 WrapperNode [2020-12-09 06:09:43,426 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 06:09:43,427 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 06:09:43,427 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 06:09:43,428 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 06:09:43,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:09:43" (1/1) ... [2020-12-09 06:09:43,445 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:09:43" (1/1) ... [2020-12-09 06:09:43,459 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 06:09:43,459 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 06:09:43,460 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 06:09:43,460 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 06:09:43,465 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:09:43" (1/1) ... [2020-12-09 06:09:43,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:09:43" (1/1) ... [2020-12-09 06:09:43,469 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:09:43" (1/1) ... [2020-12-09 06:09:43,469 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:09:43" (1/1) ... [2020-12-09 06:09:43,474 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:09:43" (1/1) ... [2020-12-09 06:09:43,475 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:09:43" (1/1) ... [2020-12-09 06:09:43,477 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:09:43" (1/1) ... [2020-12-09 06:09:43,478 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 06:09:43,479 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 06:09:43,479 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 06:09:43,479 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 06:09:43,480 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:09:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e3b08ec6-e815-47c9-9ec6-44f0e41e6eeb/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 06:09:43,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-09 06:09:43,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 06:09:43,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-09 06:09:43,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-09 06:09:43,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 06:09:43,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-09 06:09:43,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 06:09:43,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 06:09:43,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 06:09:43,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 06:09:43,760 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 06:09:43,760 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-09 06:09:43,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:09:43 BoogieIcfgContainer [2020-12-09 06:09:43,761 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 06:09:43,762 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 06:09:43,762 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 06:09:43,765 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 06:09:43,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:09:43" (1/3) ... [2020-12-09 06:09:43,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4093d66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:09:43, skipping insertion in model container [2020-12-09 06:09:43,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:09:43" (2/3) ... [2020-12-09 06:09:43,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4093d66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:09:43, skipping insertion in model container [2020-12-09 06:09:43,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:09:43" (3/3) ... [2020-12-09 06:09:43,767 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0158_1-3.i [2020-12-09 06:09:43,776 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 06:09:43,778 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 21 error locations. [2020-12-09 06:09:43,787 INFO L253 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2020-12-09 06:09:43,800 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 06:09:43,800 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-09 06:09:43,804 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 06:09:43,804 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 06:09:43,804 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 06:09:43,804 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 06:09:43,804 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 06:09:43,804 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 06:09:43,814 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-12-09 06:09:43,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2020-12-09 06:09:43,819 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:09:43,819 INFO L422 BasicCegarLoop]: trace histogram [1, 1] [2020-12-09 06:09:43,820 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 06:09:43,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:09:43,823 INFO L82 PathProgramCache]: Analyzing trace with hash 2608, now seen corresponding path program 1 times [2020-12-09 06:09:43,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:09:43,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242522337] [2020-12-09 06:09:43,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:09:43,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:09:43,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:09:43,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242522337] [2020-12-09 06:09:43,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:09:43,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 06:09:43,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260155458] [2020-12-09 06:09:43,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:09:43,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:09:43,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:09:43,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:09:43,977 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 3 states. [2020-12-09 06:09:44,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:09:44,022 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2020-12-09 06:09:44,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:09:44,023 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2020-12-09 06:09:44,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:09:44,028 INFO L225 Difference]: With dead ends: 32 [2020-12-09 06:09:44,028 INFO L226 Difference]: Without dead ends: 31 [2020-12-09 06:09:44,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:09:44,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-12-09 06:09:44,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-12-09 06:09:44,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-09 06:09:44,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2020-12-09 06:09:44,050 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 2 [2020-12-09 06:09:44,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:09:44,051 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2020-12-09 06:09:44,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:09:44,051 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2020-12-09 06:09:44,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2020-12-09 06:09:44,051 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:09:44,051 INFO L422 BasicCegarLoop]: trace histogram [1, 1] [2020-12-09 06:09:44,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 06:09:44,052 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 06:09:44,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:09:44,052 INFO L82 PathProgramCache]: Analyzing trace with hash 2609, now seen corresponding path program 1 times [2020-12-09 06:09:44,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:09:44,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806461411] [2020-12-09 06:09:44,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:09:44,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:09:44,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:09:44,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806461411] [2020-12-09 06:09:44,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:09:44,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 06:09:44,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763271065] [2020-12-09 06:09:44,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:09:44,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:09:44,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:09:44,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:09:44,091 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 3 states. [2020-12-09 06:09:44,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:09:44,112 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2020-12-09 06:09:44,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:09:44,113 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2020-12-09 06:09:44,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:09:44,114 INFO L225 Difference]: With dead ends: 24 [2020-12-09 06:09:44,114 INFO L226 Difference]: Without dead ends: 24 [2020-12-09 06:09:44,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:09:44,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-12-09 06:09:44,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-12-09 06:09:44,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-12-09 06:09:44,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-12-09 06:09:44,119 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 2 [2020-12-09 06:09:44,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:09:44,119 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-12-09 06:09:44,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:09:44,119 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-12-09 06:09:44,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 06:09:44,120 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:09:44,120 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:09:44,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 06:09:44,120 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 06:09:44,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:09:44,121 INFO L82 PathProgramCache]: Analyzing trace with hash 615708885, now seen corresponding path program 1 times [2020-12-09 06:09:44,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:09:44,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834533434] [2020-12-09 06:09:44,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:09:44,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:09:44,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:09:44,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834533434] [2020-12-09 06:09:44,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:09:44,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:09:44,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989928665] [2020-12-09 06:09:44,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 06:09:44,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:09:44,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 06:09:44,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 06:09:44,193 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 5 states. [2020-12-09 06:09:44,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:09:44,239 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2020-12-09 06:09:44,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 06:09:44,240 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-12-09 06:09:44,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:09:44,240 INFO L225 Difference]: With dead ends: 23 [2020-12-09 06:09:44,240 INFO L226 Difference]: Without dead ends: 23 [2020-12-09 06:09:44,241 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 06:09:44,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-09 06:09:44,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-12-09 06:09:44,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-09 06:09:44,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-12-09 06:09:44,243 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 9 [2020-12-09 06:09:44,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:09:44,243 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-12-09 06:09:44,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 06:09:44,243 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-12-09 06:09:44,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 06:09:44,244 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:09:44,244 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:09:44,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 06:09:44,244 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 06:09:44,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:09:44,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1907106321, now seen corresponding path program 1 times [2020-12-09 06:09:44,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:09:44,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307940314] [2020-12-09 06:09:44,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:09:44,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:09:44,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:09:44,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307940314] [2020-12-09 06:09:44,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:09:44,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:09:44,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295809524] [2020-12-09 06:09:44,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 06:09:44,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:09:44,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 06:09:44,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 06:09:44,292 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 5 states. [2020-12-09 06:09:44,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:09:44,338 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2020-12-09 06:09:44,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 06:09:44,338 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-09 06:09:44,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:09:44,339 INFO L225 Difference]: With dead ends: 22 [2020-12-09 06:09:44,339 INFO L226 Difference]: Without dead ends: 22 [2020-12-09 06:09:44,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 06:09:44,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-12-09 06:09:44,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-12-09 06:09:44,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-09 06:09:44,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-12-09 06:09:44,343 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 10 [2020-12-09 06:09:44,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:09:44,343 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-12-09 06:09:44,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 06:09:44,343 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-12-09 06:09:44,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 06:09:44,344 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:09:44,344 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:09:44,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 06:09:44,344 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 06:09:44,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:09:44,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1009246121, now seen corresponding path program 1 times [2020-12-09 06:09:44,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:09:44,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384285474] [2020-12-09 06:09:44,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:09:44,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:09:44,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:09:44,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384285474] [2020-12-09 06:09:44,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:09:44,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:09:44,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581146440] [2020-12-09 06:09:44,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 06:09:44,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:09:44,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 06:09:44,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 06:09:44,397 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 5 states. [2020-12-09 06:09:44,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:09:44,438 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2020-12-09 06:09:44,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 06:09:44,439 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-09 06:09:44,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:09:44,439 INFO L225 Difference]: With dead ends: 21 [2020-12-09 06:09:44,439 INFO L226 Difference]: Without dead ends: 21 [2020-12-09 06:09:44,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 06:09:44,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-12-09 06:09:44,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-12-09 06:09:44,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-12-09 06:09:44,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-12-09 06:09:44,441 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 11 [2020-12-09 06:09:44,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:09:44,442 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-12-09 06:09:44,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 06:09:44,442 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-12-09 06:09:44,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 06:09:44,442 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:09:44,442 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:09:44,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 06:09:44,442 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 06:09:44,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:09:44,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1221858605, now seen corresponding path program 1 times [2020-12-09 06:09:44,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:09:44,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287130756] [2020-12-09 06:09:44,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:09:44,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:09:44,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:09:44,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287130756] [2020-12-09 06:09:44,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:09:44,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:09:44,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884903311] [2020-12-09 06:09:44,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 06:09:44,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:09:44,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 06:09:44,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 06:09:44,477 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 5 states. [2020-12-09 06:09:44,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:09:44,516 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2020-12-09 06:09:44,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 06:09:44,516 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-09 06:09:44,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:09:44,516 INFO L225 Difference]: With dead ends: 20 [2020-12-09 06:09:44,517 INFO L226 Difference]: Without dead ends: 20 [2020-12-09 06:09:44,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-09 06:09:44,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-09 06:09:44,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-12-09 06:09:44,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-09 06:09:44,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-12-09 06:09:44,519 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 12 [2020-12-09 06:09:44,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:09:44,519 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-12-09 06:09:44,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 06:09:44,519 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-12-09 06:09:44,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 06:09:44,520 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:09:44,520 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:09:44,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 06:09:44,520 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 06:09:44,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:09:44,521 INFO L82 PathProgramCache]: Analyzing trace with hash 777088985, now seen corresponding path program 1 times [2020-12-09 06:09:44,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:09:44,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524692416] [2020-12-09 06:09:44,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:09:44,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:09:44,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:09:44,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524692416] [2020-12-09 06:09:44,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:09:44,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:09:44,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136383145] [2020-12-09 06:09:44,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 06:09:44,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:09:44,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 06:09:44,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 06:09:44,569 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 5 states. [2020-12-09 06:09:44,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:09:44,618 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2020-12-09 06:09:44,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 06:09:44,619 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-09 06:09:44,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:09:44,619 INFO L225 Difference]: With dead ends: 19 [2020-12-09 06:09:44,619 INFO L226 Difference]: Without dead ends: 19 [2020-12-09 06:09:44,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-09 06:09:44,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-12-09 06:09:44,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-12-09 06:09:44,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-12-09 06:09:44,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2020-12-09 06:09:44,622 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 13 [2020-12-09 06:09:44,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:09:44,622 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2020-12-09 06:09:44,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 06:09:44,622 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-12-09 06:09:44,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 06:09:44,622 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:09:44,622 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:09:44,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 06:09:44,623 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 06:09:44,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:09:44,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1680045163, now seen corresponding path program 1 times [2020-12-09 06:09:44,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:09:44,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793428432] [2020-12-09 06:09:44,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:09:44,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 06:09:44,636 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 06:09:44,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 06:09:44,647 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 06:09:44,662 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 06:09:44,662 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 06:09:44,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 06:09:44,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:09:44 BoogieIcfgContainer [2020-12-09 06:09:44,680 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 06:09:44,680 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 06:09:44,680 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 06:09:44,680 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 06:09:44,681 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:09:43" (3/4) ... [2020-12-09 06:09:44,682 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-09 06:09:44,709 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e3b08ec6-e815-47c9-9ec6-44f0e41e6eeb/bin/utaipan/witness.graphml [2020-12-09 06:09:44,709 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 06:09:44,710 INFO L168 Benchmark]: Toolchain (without parser) took 1622.39 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 65.1 MB in the beginning and 67.6 MB in the end (delta: -2.6 MB). Peak memory consumption was 21.8 MB. Max. memory is 16.1 GB. [2020-12-09 06:09:44,710 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 71.3 MB. Free memory is still 37.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:09:44,711 INFO L168 Benchmark]: CACSL2BoogieTranslator took 338.34 ms. Allocated memory is still 96.5 MB. Free memory was 64.9 MB in the beginning and 71.1 MB in the end (delta: -6.2 MB). Peak memory consumption was 20.5 MB. Max. memory is 16.1 GB. [2020-12-09 06:09:44,711 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.59 ms. Allocated memory is still 96.5 MB. Free memory was 71.1 MB in the beginning and 69.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 06:09:44,711 INFO L168 Benchmark]: Boogie Preprocessor took 19.18 ms. Allocated memory is still 96.5 MB. Free memory was 69.1 MB in the beginning and 68.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:09:44,712 INFO L168 Benchmark]: RCFGBuilder took 282.27 ms. Allocated memory is still 96.5 MB. Free memory was 68.1 MB in the beginning and 45.8 MB in the end (delta: 22.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-12-09 06:09:44,712 INFO L168 Benchmark]: TraceAbstraction took 917.58 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 45.4 MB in the beginning and 69.7 MB in the end (delta: -24.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:09:44,713 INFO L168 Benchmark]: Witness Printer took 28.57 ms. Allocated memory is still 117.4 MB. Free memory was 69.7 MB in the beginning and 67.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 06:09:44,715 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 71.3 MB. Free memory is still 37.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 338.34 ms. Allocated memory is still 96.5 MB. Free memory was 64.9 MB in the beginning and 71.1 MB in the end (delta: -6.2 MB). Peak memory consumption was 20.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.59 ms. Allocated memory is still 96.5 MB. Free memory was 71.1 MB in the beginning and 69.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.18 ms. Allocated memory is still 96.5 MB. Free memory was 69.1 MB in the beginning and 68.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 282.27 ms. Allocated memory is still 96.5 MB. Free memory was 68.1 MB in the beginning and 45.8 MB in the end (delta: 22.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 917.58 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 45.4 MB in the beginning and 69.7 MB in the end (delta: -24.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 28.57 ms. Allocated memory is still 117.4 MB. Free memory was 69.7 MB in the beginning and 67.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 545]: free of unallocated memory possible free of unallocated memory possible We found a FailurePath: [L526-L533] union { void *p0; struct { char c[2]; int p1; int p2; } str; } data; [L534] data.p0 = malloc(37U) [L535] EXPR data.p0 [L535] void *ptr = data.p0; [L536] COND FALSE !(__VERIFIER_nondet_int()) [L539] data.str.p2 = 30 [L541] EXPR data.str.p2 [L541] COND FALSE !(25 > data.str.p2) [L544] EXPR data.p0 [L544] free(data.p0) [L544] free(data.p0) [L544] free(data.p0) [L545] free(ptr) [L545] free(ptr) [L545] free(ptr) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 39 locations, 21 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 93 SDtfs, 196 SDslu, 43 SDs, 0 SdLazy, 133 SolverSat, 51 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 73 NumberOfCodeBlocks, 73 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 2934 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...