./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/termination-crafted/LexIndexValue-Array-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/termination-crafted/LexIndexValue-Array-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 64bit --witnessprinter.graph.data.programhash b9dfe2826dbd43b76a93fbf593c8a07947a4c894 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 03:56:42,284 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 03:56:42,288 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 03:56:42,342 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 03:56:42,343 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 03:56:42,344 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 03:56:42,346 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 03:56:42,349 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 03:56:42,351 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 03:56:42,353 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 03:56:42,354 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 03:56:42,356 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 03:56:42,356 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 03:56:42,358 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 03:56:42,359 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 03:56:42,361 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 03:56:42,362 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 03:56:42,363 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 03:56:42,365 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 03:56:42,368 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 03:56:42,378 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 03:56:42,381 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 03:56:42,387 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 03:56:42,389 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 03:56:42,395 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 03:56:42,396 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 03:56:42,396 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 03:56:42,397 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 03:56:42,398 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 03:56:42,403 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 03:56:42,403 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 03:56:42,404 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 03:56:42,405 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 03:56:42,406 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 03:56:42,408 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 03:56:42,409 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 03:56:42,410 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 03:56:42,410 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 03:56:42,410 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 03:56:42,413 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 03:56:42,414 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 03:56:42,415 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-10-26 03:56:42,471 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 03:56:42,471 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 03:56:42,475 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 03:56:42,475 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 03:56:42,476 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 03:56:42,476 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 03:56:42,476 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 03:56:42,476 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 03:56:42,476 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 03:56:42,477 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-26 03:56:42,478 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-26 03:56:42,478 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-26 03:56:42,479 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 03:56:42,479 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-26 03:56:42,479 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 03:56:42,479 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 03:56:42,479 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 03:56:42,480 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 03:56:42,480 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 03:56:42,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 03:56:42,480 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 03:56:42,481 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 03:56:42,481 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 03:56:42,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 03:56:42,481 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 03:56:42,481 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9dfe2826dbd43b76a93fbf593c8a07947a4c894 [2020-10-26 03:56:42,900 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 03:56:42,923 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 03:56:42,926 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 03:56:42,928 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 03:56:42,929 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 03:56:42,930 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/LexIndexValue-Array-1.c [2020-10-26 03:56:43,018 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/148ab2c86/790b0bf1dad94704a80e53394929c203/FLAG4c45dfdf5 [2020-10-26 03:56:43,597 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 03:56:43,597 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/LexIndexValue-Array-1.c [2020-10-26 03:56:43,604 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/148ab2c86/790b0bf1dad94704a80e53394929c203/FLAG4c45dfdf5 [2020-10-26 03:56:43,985 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/148ab2c86/790b0bf1dad94704a80e53394929c203 [2020-10-26 03:56:43,989 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 03:56:43,998 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-26 03:56:44,001 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 03:56:44,001 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 03:56:44,005 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 03:56:44,006 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 03:56:43" (1/1) ... [2020-10-26 03:56:44,010 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5035fedf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:56:44, skipping insertion in model container [2020-10-26 03:56:44,011 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 03:56:43" (1/1) ... [2020-10-26 03:56:44,020 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 03:56:44,036 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 03:56:44,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 03:56:44,230 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 03:56:44,247 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 03:56:44,268 INFO L208 MainTranslator]: Completed translation [2020-10-26 03:56:44,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:56:44 WrapperNode [2020-10-26 03:56:44,269 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 03:56:44,270 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 03:56:44,270 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 03:56:44,270 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 03:56:44,285 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:56:44" (1/1) ... [2020-10-26 03:56:44,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:56:44" (1/1) ... [2020-10-26 03:56:44,293 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:56:44" (1/1) ... [2020-10-26 03:56:44,294 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:56:44" (1/1) ... [2020-10-26 03:56:44,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:56:44" (1/1) ... [2020-10-26 03:56:44,306 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:56:44" (1/1) ... [2020-10-26 03:56:44,307 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:56:44" (1/1) ... [2020-10-26 03:56:44,309 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 03:56:44,310 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 03:56:44,311 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 03:56:44,311 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 03:56:44,312 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:56:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-26 03:56:44,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 03:56:44,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 03:56:44,399 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 03:56:44,400 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 03:56:44,400 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 03:56:44,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 03:56:44,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 03:56:44,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 03:56:44,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 03:56:44,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 03:56:44,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 03:56:44,758 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 03:56:44,758 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-26 03:56:44,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:56:44 BoogieIcfgContainer [2020-10-26 03:56:44,761 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 03:56:44,767 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 03:56:44,768 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 03:56:44,787 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 03:56:44,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 03:56:43" (1/3) ... [2020-10-26 03:56:44,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3219cd34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 03:56:44, skipping insertion in model container [2020-10-26 03:56:44,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:56:44" (2/3) ... [2020-10-26 03:56:44,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3219cd34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 03:56:44, skipping insertion in model container [2020-10-26 03:56:44,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:56:44" (3/3) ... [2020-10-26 03:56:44,793 INFO L111 eAbstractionObserver]: Analyzing ICFG LexIndexValue-Array-1.c [2020-10-26 03:56:44,809 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 03:56:44,814 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2020-10-26 03:56:44,831 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-10-26 03:56:44,880 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 03:56:44,880 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-26 03:56:44,881 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 03:56:44,881 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 03:56:44,881 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 03:56:44,881 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 03:56:44,881 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 03:56:44,882 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 03:56:44,899 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-10-26 03:56:44,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-26 03:56:44,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:56:44,910 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:56:44,911 INFO L429 AbstractCegarLoop]: === Iteration 1 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:56:44,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:56:44,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1038673271, now seen corresponding path program 1 times [2020-10-26 03:56:44,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:56:44,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881116153] [2020-10-26 03:56:44,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:56:45,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:56:45,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:56:45,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:56:45,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:56:45,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881116153] [2020-10-26 03:56:45,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:56:45,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 03:56:45,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998708962] [2020-10-26 03:56:45,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:56:45,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:56:45,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:56:45,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:56:45,206 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 4 states. [2020-10-26 03:56:45,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:56:45,354 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2020-10-26 03:56:45,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:56:45,357 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-26 03:56:45,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:56:45,367 INFO L225 Difference]: With dead ends: 39 [2020-10-26 03:56:45,367 INFO L226 Difference]: Without dead ends: 36 [2020-10-26 03:56:45,369 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:56:45,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-26 03:56:45,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2020-10-26 03:56:45,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-26 03:56:45,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-26 03:56:45,411 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 8 [2020-10-26 03:56:45,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:56:45,411 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-26 03:56:45,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:56:45,412 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-26 03:56:45,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-26 03:56:45,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:56:45,412 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:56:45,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 03:56:45,413 INFO L429 AbstractCegarLoop]: === Iteration 2 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:56:45,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:56:45,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1038673272, now seen corresponding path program 1 times [2020-10-26 03:56:45,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:56:45,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797026007] [2020-10-26 03:56:45,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:56:45,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:56:45,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:56:45,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:56:45,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:56:45,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797026007] [2020-10-26 03:56:45,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:56:45,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 03:56:45,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916271889] [2020-10-26 03:56:45,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:56:45,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:56:45,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:56:45,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:56:45,503 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2020-10-26 03:56:45,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:56:45,645 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2020-10-26 03:56:45,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:56:45,646 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-26 03:56:45,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:56:45,647 INFO L225 Difference]: With dead ends: 29 [2020-10-26 03:56:45,647 INFO L226 Difference]: Without dead ends: 29 [2020-10-26 03:56:45,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:56:45,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-26 03:56:45,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-26 03:56:45,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-26 03:56:45,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-10-26 03:56:45,658 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 8 [2020-10-26 03:56:45,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:56:45,659 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-10-26 03:56:45,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:56:45,660 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-10-26 03:56:45,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-26 03:56:45,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:56:45,661 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:56:45,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 03:56:45,662 INFO L429 AbstractCegarLoop]: === Iteration 3 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:56:45,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:56:45,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1416659532, now seen corresponding path program 1 times [2020-10-26 03:56:45,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:56:45,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010022300] [2020-10-26 03:56:45,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:56:45,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:56:45,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:56:45,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:56:45,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:56:45,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010022300] [2020-10-26 03:56:45,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062529064] [2020-10-26 03:56:45,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:56:45,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:56:45,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-26 03:56:45,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:56:45,953 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-26 03:56:45,954 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:56:45,967 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:56:45,968 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:56:45,968 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-10-26 03:56:46,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:56:46,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 03:56:46,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3] total 6 [2020-10-26 03:56:46,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691868875] [2020-10-26 03:56:46,014 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 03:56:46,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:56:46,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 03:56:46,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 03:56:46,018 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 7 states. [2020-10-26 03:56:46,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:56:46,172 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2020-10-26 03:56:46,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 03:56:46,173 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-10-26 03:56:46,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:56:46,175 INFO L225 Difference]: With dead ends: 35 [2020-10-26 03:56:46,175 INFO L226 Difference]: Without dead ends: 35 [2020-10-26 03:56:46,176 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 03:56:46,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-26 03:56:46,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-26 03:56:46,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-26 03:56:46,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2020-10-26 03:56:46,185 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 12 [2020-10-26 03:56:46,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:56:46,187 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2020-10-26 03:56:46,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 03:56:46,187 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2020-10-26 03:56:46,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-26 03:56:46,189 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:56:46,189 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:56:46,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-26 03:56:46,393 INFO L429 AbstractCegarLoop]: === Iteration 4 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:56:46,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:56:46,394 INFO L82 PathProgramCache]: Analyzing trace with hash 945846593, now seen corresponding path program 1 times [2020-10-26 03:56:46,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:56:46,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485376788] [2020-10-26 03:56:46,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:56:46,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:56:46,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:56:46,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:56:46,535 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-26 03:56:46,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485376788] [2020-10-26 03:56:46,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:56:46,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 03:56:46,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254769601] [2020-10-26 03:56:46,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:56:46,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:56:46,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:56:46,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:56:46,540 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand 4 states. [2020-10-26 03:56:46,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:56:46,613 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2020-10-26 03:56:46,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:56:46,613 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-26 03:56:46,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:56:46,615 INFO L225 Difference]: With dead ends: 46 [2020-10-26 03:56:46,615 INFO L226 Difference]: Without dead ends: 46 [2020-10-26 03:56:46,615 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:56:46,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-26 03:56:46,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-26 03:56:46,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-26 03:56:46,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2020-10-26 03:56:46,622 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 22 [2020-10-26 03:56:46,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:56:46,623 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2020-10-26 03:56:46,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:56:46,623 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2020-10-26 03:56:46,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-26 03:56:46,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:56:46,625 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:56:46,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 03:56:46,625 INFO L429 AbstractCegarLoop]: === Iteration 5 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:56:46,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:56:46,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1574303516, now seen corresponding path program 1 times [2020-10-26 03:56:46,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:56:46,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558357681] [2020-10-26 03:56:46,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:56:46,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:56:46,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:56:46,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:56:46,689 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-26 03:56:46,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558357681] [2020-10-26 03:56:46,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:56:46,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 03:56:46,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971132031] [2020-10-26 03:56:46,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 03:56:46,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:56:46,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 03:56:46,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 03:56:46,692 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand 5 states. [2020-10-26 03:56:46,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:56:46,774 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2020-10-26 03:56:46,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 03:56:46,777 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-10-26 03:56:46,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:56:46,778 INFO L225 Difference]: With dead ends: 48 [2020-10-26 03:56:46,778 INFO L226 Difference]: Without dead ends: 48 [2020-10-26 03:56:46,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-26 03:56:46,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-26 03:56:46,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2020-10-26 03:56:46,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-26 03:56:46,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2020-10-26 03:56:46,784 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 24 [2020-10-26 03:56:46,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:56:46,785 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2020-10-26 03:56:46,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 03:56:46,785 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2020-10-26 03:56:46,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-26 03:56:46,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:56:46,786 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:56:46,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 03:56:46,787 INFO L429 AbstractCegarLoop]: === Iteration 6 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:56:46,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:56:46,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1258071097, now seen corresponding path program 1 times [2020-10-26 03:56:46,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:56:46,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658147207] [2020-10-26 03:56:46,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:56:46,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:56:46,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:56:46,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:56:46,870 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:56:46,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658147207] [2020-10-26 03:56:46,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073950317] [2020-10-26 03:56:46,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:56:46,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:56:46,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-26 03:56:46,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:56:46,960 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:56:46,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 03:56:46,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2020-10-26 03:56:46,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65504250] [2020-10-26 03:56:46,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 03:56:46,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:56:46,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 03:56:46,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 03:56:46,963 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand 8 states. [2020-10-26 03:56:47,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:56:47,048 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2020-10-26 03:56:47,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 03:56:47,049 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-10-26 03:56:47,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:56:47,050 INFO L225 Difference]: With dead ends: 52 [2020-10-26 03:56:47,050 INFO L226 Difference]: Without dead ends: 52 [2020-10-26 03:56:47,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 03:56:47,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-26 03:56:47,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2020-10-26 03:56:47,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-26 03:56:47,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2020-10-26 03:56:47,056 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 26 [2020-10-26 03:56:47,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:56:47,057 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2020-10-26 03:56:47,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 03:56:47,057 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2020-10-26 03:56:47,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-26 03:56:47,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:56:47,059 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:56:47,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:56:47,272 INFO L429 AbstractCegarLoop]: === Iteration 7 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:56:47,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:56:47,274 INFO L82 PathProgramCache]: Analyzing trace with hash -113674038, now seen corresponding path program 2 times [2020-10-26 03:56:47,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:56:47,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250569061] [2020-10-26 03:56:47,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:56:47,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:56:47,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:56:47,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:56:47,389 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:56:47,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250569061] [2020-10-26 03:56:47,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745104693] [2020-10-26 03:56:47,390 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:56:47,428 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-26 03:56:47,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 03:56:47,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-26 03:56:47,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:56:47,490 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-26 03:56:47,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-26 03:56:47,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2020-10-26 03:56:47,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339277885] [2020-10-26 03:56:47,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 03:56:47,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:56:47,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 03:56:47,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-26 03:56:47,493 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand 5 states. [2020-10-26 03:56:47,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:56:47,534 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2020-10-26 03:56:47,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 03:56:47,535 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-10-26 03:56:47,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:56:47,536 INFO L225 Difference]: With dead ends: 48 [2020-10-26 03:56:47,536 INFO L226 Difference]: Without dead ends: 46 [2020-10-26 03:56:47,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-26 03:56:47,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-26 03:56:47,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-10-26 03:56:47,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-26 03:56:47,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-10-26 03:56:47,541 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 30 [2020-10-26 03:56:47,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:56:47,542 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-10-26 03:56:47,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 03:56:47,542 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-10-26 03:56:47,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-26 03:56:47,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:56:47,543 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:56:47,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:56:47,745 INFO L429 AbstractCegarLoop]: === Iteration 8 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:56:47,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:56:47,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1865200645, now seen corresponding path program 1 times [2020-10-26 03:56:47,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:56:47,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517334303] [2020-10-26 03:56:47,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:56:47,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:56:47,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:56:47,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:56:47,843 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 03:56:47,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517334303] [2020-10-26 03:56:47,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457787163] [2020-10-26 03:56:47,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:56:47,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:56:47,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-26 03:56:47,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:56:47,953 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 03:56:47,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 03:56:47,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 9 [2020-10-26 03:56:47,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871431568] [2020-10-26 03:56:47,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 03:56:47,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:56:47,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 03:56:47,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-26 03:56:47,956 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 9 states. [2020-10-26 03:56:48,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:56:48,036 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2020-10-26 03:56:48,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 03:56:48,036 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-10-26 03:56:48,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:56:48,037 INFO L225 Difference]: With dead ends: 53 [2020-10-26 03:56:48,037 INFO L226 Difference]: Without dead ends: 53 [2020-10-26 03:56:48,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-26 03:56:48,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-26 03:56:48,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2020-10-26 03:56:48,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-26 03:56:48,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-10-26 03:56:48,042 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 32 [2020-10-26 03:56:48,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:56:48,043 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-10-26 03:56:48,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 03:56:48,043 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-10-26 03:56:48,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-26 03:56:48,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:56:48,044 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:56:48,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:56:48,257 INFO L429 AbstractCegarLoop]: === Iteration 9 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:56:48,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:56:48,259 INFO L82 PathProgramCache]: Analyzing trace with hash 133323454, now seen corresponding path program 2 times [2020-10-26 03:56:48,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:56:48,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14187755] [2020-10-26 03:56:48,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:56:48,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:56:48,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:56:48,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:56:48,342 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 03:56:48,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14187755] [2020-10-26 03:56:48,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26520124] [2020-10-26 03:56:48,342 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:56:48,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-26 03:56:48,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 03:56:48,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-26 03:56:48,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:56:48,430 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 03:56:48,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 03:56:48,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 10 [2020-10-26 03:56:48,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246089479] [2020-10-26 03:56:48,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 03:56:48,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:56:48,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 03:56:48,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-26 03:56:48,432 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 10 states. [2020-10-26 03:56:48,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:56:48,506 INFO L93 Difference]: Finished difference Result 57 states and 61 transitions. [2020-10-26 03:56:48,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 03:56:48,507 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-10-26 03:56:48,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:56:48,508 INFO L225 Difference]: With dead ends: 57 [2020-10-26 03:56:48,508 INFO L226 Difference]: Without dead ends: 57 [2020-10-26 03:56:48,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-26 03:56:48,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-26 03:56:48,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2020-10-26 03:56:48,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-26 03:56:48,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-10-26 03:56:48,514 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 36 [2020-10-26 03:56:48,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:56:48,514 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-10-26 03:56:48,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 03:56:48,515 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-10-26 03:56:48,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-26 03:56:48,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:56:48,516 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:56:48,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:56:48,717 INFO L429 AbstractCegarLoop]: === Iteration 10 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-26 03:56:48,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:56:48,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1483321343, now seen corresponding path program 3 times [2020-10-26 03:56:48,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:56:48,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917176671] [2020-10-26 03:56:48,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:56:48,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:56:48,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:56:48,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:56:48,825 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 03:56:48,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917176671] [2020-10-26 03:56:48,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419671503] [2020-10-26 03:56:48,826 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:56:48,867 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-26 03:56:48,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 03:56:48,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-26 03:56:48,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:56:48,877 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-26 03:56:48,878 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:56:48,884 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:56:48,885 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:56:48,885 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-10-26 03:56:48,980 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-26 03:56:48,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-26 03:56:48,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 14 [2020-10-26 03:56:48,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48090748] [2020-10-26 03:56:48,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 03:56:48,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:56:48,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 03:56:48,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-10-26 03:56:48,982 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 6 states. [2020-10-26 03:56:49,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:56:49,083 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2020-10-26 03:56:49,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 03:56:49,084 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-10-26 03:56:49,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:56:49,084 INFO L225 Difference]: With dead ends: 54 [2020-10-26 03:56:49,085 INFO L226 Difference]: Without dead ends: 0 [2020-10-26 03:56:49,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-26 03:56:49,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-26 03:56:49,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-26 03:56:49,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-26 03:56:49,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-26 03:56:49,086 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2020-10-26 03:56:49,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:56:49,086 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 03:56:49,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 03:56:49,086 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-26 03:56:49,086 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-26 03:56:49,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:56:49,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 03:56:49 BoogieIcfgContainer [2020-10-26 03:56:49,294 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 03:56:49,295 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 03:56:49,295 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 03:56:49,295 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 03:56:49,296 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:56:44" (3/4) ... [2020-10-26 03:56:49,299 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-26 03:56:49,307 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-10-26 03:56:49,307 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-10-26 03:56:49,311 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-10-26 03:56:49,312 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-10-26 03:56:49,312 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 03:56:49,312 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 03:56:49,362 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-26 03:56:49,362 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 03:56:49,366 INFO L168 Benchmark]: Toolchain (without parser) took 5371.05 ms. Allocated memory was 46.1 MB in the beginning and 83.9 MB in the end (delta: 37.7 MB). Free memory was 23.9 MB in the beginning and 53.8 MB in the end (delta: -29.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-10-26 03:56:49,367 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 37.7 MB. Free memory is still 18.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 03:56:49,367 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.44 ms. Allocated memory is still 46.1 MB. Free memory was 23.3 MB in the beginning and 25.5 MB in the end (delta: -2.3 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-10-26 03:56:49,369 INFO L168 Benchmark]: Boogie Preprocessor took 39.37 ms. Allocated memory is still 46.1 MB. Free memory was 25.5 MB in the beginning and 24.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 03:56:49,370 INFO L168 Benchmark]: RCFGBuilder took 450.80 ms. Allocated memory is still 46.1 MB. Free memory was 24.0 MB in the beginning and 21.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. [2020-10-26 03:56:49,371 INFO L168 Benchmark]: TraceAbstraction took 4526.85 ms. Allocated memory was 46.1 MB in the beginning and 83.9 MB in the end (delta: 37.7 MB). Free memory was 21.2 MB in the beginning and 56.6 MB in the end (delta: -35.4 MB). Peak memory consumption was 1.9 MB. Max. memory is 16.1 GB. [2020-10-26 03:56:49,371 INFO L168 Benchmark]: Witness Printer took 67.68 ms. Allocated memory is still 83.9 MB. Free memory was 56.6 MB in the beginning and 53.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 03:56:49,377 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 37.7 MB. Free memory is still 18.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 268.44 ms. Allocated memory is still 46.1 MB. Free memory was 23.3 MB in the beginning and 25.5 MB in the end (delta: -2.3 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.37 ms. Allocated memory is still 46.1 MB. Free memory was 25.5 MB in the beginning and 24.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 450.80 ms. Allocated memory is still 46.1 MB. Free memory was 24.0 MB in the beginning and 21.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4526.85 ms. Allocated memory was 46.1 MB in the beginning and 83.9 MB in the end (delta: 37.7 MB). Free memory was 21.2 MB in the beginning and 56.6 MB in the end (delta: -35.4 MB). Peak memory consumption was 1.9 MB. Max. memory is 16.1 GB. * Witness Printer took 67.68 ms. Allocated memory is still 83.9 MB. Free memory was 56.6 MB in the beginning and 53.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 22]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 22]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 15]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 15]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 22]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 22]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 10]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 34 locations, 9 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.4s, OverallIterations: 10, TraceHistogramMax: 6, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 213 SDtfs, 156 SDslu, 484 SDs, 0 SdLazy, 505 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 243 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 16 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 414 NumberOfCodeBlocks, 378 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 398 ConstructedInterpolants, 1 QuantifiedInterpolants, 51941 SizeOfPredicates, 4 NumberOfNonLiveVariables, 485 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 16 InterpolantComputations, 6 PerfectInterpolantSequences, 142/416 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 correct! Received shutdown request...