/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/termination-crafted/NonTermination3-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-07 05:08:37,324 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-07 05:08:37,329 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-07 05:08:37,386 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-07 05:08:37,387 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-07 05:08:37,391 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-07 05:08:37,395 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-07 05:08:37,401 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-07 05:08:37,405 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-07 05:08:37,411 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-07 05:08:37,415 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-07 05:08:37,417 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-07 05:08:37,417 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-07 05:08:37,421 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-07 05:08:37,423 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-07 05:08:37,425 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-07 05:08:37,426 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-07 05:08:37,430 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-07 05:08:37,437 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-07 05:08:37,445 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-07 05:08:37,447 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-07 05:08:37,449 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-07 05:08:37,452 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-07 05:08:37,453 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-07 05:08:37,473 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-07 05:08:37,474 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-07 05:08:37,474 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-07 05:08:37,476 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-07 05:08:37,477 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-07 05:08:37,478 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-07 05:08:37,479 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-07 05:08:37,479 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-07 05:08:37,482 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-07 05:08:37,483 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-07 05:08:37,484 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-07 05:08:37,484 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-07 05:08:37,485 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-07 05:08:37,492 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-07 05:08:37,492 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-07 05:08:37,494 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-07 05:08:37,494 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-07 05:08:37,496 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2021-01-07 05:08:37,544 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-07 05:08:37,545 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-07 05:08:37,550 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-07 05:08:37,550 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-07 05:08:37,551 INFO L138 SettingsManager]: * Use SBE=true [2021-01-07 05:08:37,551 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-07 05:08:37,551 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-01-07 05:08:37,551 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-07 05:08:37,551 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-07 05:08:37,552 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-01-07 05:08:37,553 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-01-07 05:08:37,554 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-01-07 05:08:37,554 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-07 05:08:37,554 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-01-07 05:08:37,554 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-07 05:08:37,555 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-07 05:08:37,555 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-07 05:08:37,555 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-07 05:08:37,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-07 05:08:37,555 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-07 05:08:37,556 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-07 05:08:37,556 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-07 05:08:37,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-07 05:08:37,558 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-07 05:08:37,558 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-bitabs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-07 05:08:38,029 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-07 05:08:38,073 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-07 05:08:38,076 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-07 05:08:38,078 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-07 05:08:38,081 INFO L275 PluginConnector]: CDTParser initialized [2021-01-07 05:08:38,082 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/NonTermination3-1.c [2021-01-07 05:08:38,192 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/09d9e7ae4/3a61785162e94cebbe1d618eb39edd4f/FLAG831732c95 [2021-01-07 05:08:38,828 INFO L306 CDTParser]: Found 1 translation units. [2021-01-07 05:08:38,829 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/termination-crafted/NonTermination3-1.c [2021-01-07 05:08:38,836 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/09d9e7ae4/3a61785162e94cebbe1d618eb39edd4f/FLAG831732c95 [2021-01-07 05:08:39,221 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/09d9e7ae4/3a61785162e94cebbe1d618eb39edd4f [2021-01-07 05:08:39,225 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-07 05:08:39,228 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-07 05:08:39,232 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-07 05:08:39,233 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-07 05:08:39,237 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-07 05:08:39,238 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:08:39" (1/1) ... [2021-01-07 05:08:39,239 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18e06587 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:39, skipping insertion in model container [2021-01-07 05:08:39,240 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:08:39" (1/1) ... [2021-01-07 05:08:39,249 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-07 05:08:39,264 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~a~0,],[IdentifierExpression[~n~0,]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: ArrayLHS[VariableLHS[~a~0,],[IdentifierExpression[~i~0,]]] [2021-01-07 05:08:39,432 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:08:39,437 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#a~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#a~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~n~0,]]]]] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#a~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~#a~0,],offset],BinaryExpression[ARITHMUL,IntegerLiteral[4],IdentifierExpression[~i~0,]]]]] [2021-01-07 05:08:39,459 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:08:39,481 INFO L208 MainTranslator]: Completed translation [2021-01-07 05:08:39,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:39 WrapperNode [2021-01-07 05:08:39,482 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-07 05:08:39,483 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-07 05:08:39,483 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-07 05:08:39,484 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-07 05:08:39,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:39" (1/1) ... [2021-01-07 05:08:39,501 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:39" (1/1) ... [2021-01-07 05:08:39,522 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-07 05:08:39,523 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-07 05:08:39,523 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-07 05:08:39,523 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-07 05:08:39,533 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:39" (1/1) ... [2021-01-07 05:08:39,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:39" (1/1) ... [2021-01-07 05:08:39,535 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:39" (1/1) ... [2021-01-07 05:08:39,536 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:39" (1/1) ... [2021-01-07 05:08:39,541 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:39" (1/1) ... [2021-01-07 05:08:39,546 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:39" (1/1) ... [2021-01-07 05:08:39,548 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:39" (1/1) ... [2021-01-07 05:08:39,550 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-07 05:08:39,551 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-07 05:08:39,551 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-07 05:08:39,551 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-07 05:08:39,552 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:39" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-07 05:08:39,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-07 05:08:39,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-07 05:08:39,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-07 05:08:39,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-07 05:08:39,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-07 05:08:39,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-07 05:08:39,958 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-07 05:08:39,959 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-01-07 05:08:39,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:08:39 BoogieIcfgContainer [2021-01-07 05:08:39,963 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-07 05:08:39,966 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-07 05:08:39,966 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-07 05:08:39,972 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-07 05:08:39,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.01 05:08:39" (1/3) ... [2021-01-07 05:08:39,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42a7e734 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:08:39, skipping insertion in model container [2021-01-07 05:08:39,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:39" (2/3) ... [2021-01-07 05:08:39,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42a7e734 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:08:39, skipping insertion in model container [2021-01-07 05:08:39,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:08:39" (3/3) ... [2021-01-07 05:08:40,001 INFO L111 eAbstractionObserver]: Analyzing ICFG NonTermination3-1.c [2021-01-07 05:08:40,012 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-07 05:08:40,019 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2021-01-07 05:08:40,048 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-01-07 05:08:40,094 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-07 05:08:40,094 INFO L378 AbstractCegarLoop]: Hoare is false [2021-01-07 05:08:40,095 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-07 05:08:40,095 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-07 05:08:40,095 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-07 05:08:40,095 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-07 05:08:40,096 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-07 05:08:40,096 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-07 05:08:40,126 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2021-01-07 05:08:40,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-01-07 05:08:40,143 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:40,144 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-01-07 05:08:40,145 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:08:40,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:40,154 INFO L82 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2021-01-07 05:08:40,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:40,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436848338] [2021-01-07 05:08:40,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:40,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:40,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:40,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436848338] [2021-01-07 05:08:40,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:08:40,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:08:40,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953508185] [2021-01-07 05:08:40,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:08:40,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:40,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:08:40,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:08:40,499 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2021-01-07 05:08:40,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:40,619 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2021-01-07 05:08:40,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:08:40,624 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2021-01-07 05:08:40,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:40,650 INFO L225 Difference]: With dead ends: 20 [2021-01-07 05:08:40,651 INFO L226 Difference]: Without dead ends: 18 [2021-01-07 05:08:40,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:08:40,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-01-07 05:08:40,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-01-07 05:08:40,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-01-07 05:08:40,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2021-01-07 05:08:40,731 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 4 [2021-01-07 05:08:40,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:40,732 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2021-01-07 05:08:40,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:08:40,732 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2021-01-07 05:08:40,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-01-07 05:08:40,733 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:40,733 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-01-07 05:08:40,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-07 05:08:40,733 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:08:40,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:40,735 INFO L82 PathProgramCache]: Analyzing trace with hash 925766, now seen corresponding path program 1 times [2021-01-07 05:08:40,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:40,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203505830] [2021-01-07 05:08:40,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:40,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:40,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:40,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203505830] [2021-01-07 05:08:40,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:08:40,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:08:40,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905835367] [2021-01-07 05:08:40,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:08:40,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:40,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:08:40,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:08:40,800 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 3 states. [2021-01-07 05:08:40,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:40,844 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2021-01-07 05:08:40,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:08:40,846 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2021-01-07 05:08:40,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:40,847 INFO L225 Difference]: With dead ends: 22 [2021-01-07 05:08:40,847 INFO L226 Difference]: Without dead ends: 22 [2021-01-07 05:08:40,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:08:40,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-01-07 05:08:40,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2021-01-07 05:08:40,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-01-07 05:08:40,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2021-01-07 05:08:40,857 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 4 [2021-01-07 05:08:40,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:40,858 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-01-07 05:08:40,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:08:40,858 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2021-01-07 05:08:40,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-07 05:08:40,861 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:40,861 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:40,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-07 05:08:40,862 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:08:40,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:40,864 INFO L82 PathProgramCache]: Analyzing trace with hash 264435913, now seen corresponding path program 1 times [2021-01-07 05:08:40,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:40,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765837610] [2021-01-07 05:08:40,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:40,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:41,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:41,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765837610] [2021-01-07 05:08:41,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146839055] [2021-01-07 05:08:41,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-07 05:08:41,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:41,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-07 05:08:41,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:41,119 INFO L382 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 [2021-01-07 05:08:41,120 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-01-07 05:08:41,128 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-01-07 05:08:41,129 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-01-07 05:08:41,130 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2021-01-07 05:08:41,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:41,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:41,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 5 [2021-01-07 05:08:41,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843724581] [2021-01-07 05:08:41,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:08:41,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:41,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:08:41,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:08:41,171 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 6 states. [2021-01-07 05:08:41,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:41,231 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2021-01-07 05:08:41,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:08:41,232 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2021-01-07 05:08:41,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:41,233 INFO L225 Difference]: With dead ends: 26 [2021-01-07 05:08:41,233 INFO L226 Difference]: Without dead ends: 26 [2021-01-07 05:08:41,233 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:08:41,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-01-07 05:08:41,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-01-07 05:08:41,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-01-07 05:08:41,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2021-01-07 05:08:41,238 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 8 [2021-01-07 05:08:41,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:41,239 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2021-01-07 05:08:41,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:08:41,239 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2021-01-07 05:08:41,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-07 05:08:41,240 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:41,240 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:41,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-01-07 05:08:41,455 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:08:41,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:41,457 INFO L82 PathProgramCache]: Analyzing trace with hash 502834590, now seen corresponding path program 1 times [2021-01-07 05:08:41,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:41,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338119088] [2021-01-07 05:08:41,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:41,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:41,572 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-01-07 05:08:41,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338119088] [2021-01-07 05:08:41,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:08:41,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 05:08:41,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800562669] [2021-01-07 05:08:41,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-07 05:08:41,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:41,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-07 05:08:41,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:08:41,575 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 5 states. [2021-01-07 05:08:41,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:41,637 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2021-01-07 05:08:41,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:08:41,638 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2021-01-07 05:08:41,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:41,639 INFO L225 Difference]: With dead ends: 29 [2021-01-07 05:08:41,639 INFO L226 Difference]: Without dead ends: 29 [2021-01-07 05:08:41,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:08:41,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-01-07 05:08:41,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2021-01-07 05:08:41,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-01-07 05:08:41,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2021-01-07 05:08:41,644 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 18 [2021-01-07 05:08:41,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:41,645 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-01-07 05:08:41,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-07 05:08:41,645 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2021-01-07 05:08:41,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-01-07 05:08:41,646 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:41,646 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:41,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-07 05:08:41,647 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:08:41,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:41,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1591990808, now seen corresponding path program 1 times [2021-01-07 05:08:41,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:41,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955656633] [2021-01-07 05:08:41,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:41,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:41,687 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-01-07 05:08:41,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955656633] [2021-01-07 05:08:41,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:08:41,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:08:41,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661639795] [2021-01-07 05:08:41,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-07 05:08:41,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:41,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-07 05:08:41,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:08:41,690 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 3 states. [2021-01-07 05:08:41,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:41,702 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2021-01-07 05:08:41,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-07 05:08:41,702 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2021-01-07 05:08:41,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:41,703 INFO L225 Difference]: With dead ends: 26 [2021-01-07 05:08:41,704 INFO L226 Difference]: Without dead ends: 26 [2021-01-07 05:08:41,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-07 05:08:41,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-01-07 05:08:41,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-01-07 05:08:41,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-01-07 05:08:41,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2021-01-07 05:08:41,709 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 19 [2021-01-07 05:08:41,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:41,710 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2021-01-07 05:08:41,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-07 05:08:41,710 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2021-01-07 05:08:41,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-01-07 05:08:41,711 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:41,711 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:41,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-07 05:08:41,712 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:08:41,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:41,712 INFO L82 PathProgramCache]: Analyzing trace with hash -2107076543, now seen corresponding path program 1 times [2021-01-07 05:08:41,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:41,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981375531] [2021-01-07 05:08:41,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:41,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:41,782 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:41,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981375531] [2021-01-07 05:08:41,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369778328] [2021-01-07 05:08:41,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-07 05:08:41,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:41,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-07 05:08:41,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:41,907 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:41,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:41,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-01-07 05:08:41,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273596888] [2021-01-07 05:08:41,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-07 05:08:41,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:41,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-07 05:08:41,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:08:41,910 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 7 states. [2021-01-07 05:08:41,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:41,953 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2021-01-07 05:08:41,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:08:41,957 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2021-01-07 05:08:41,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:41,960 INFO L225 Difference]: With dead ends: 33 [2021-01-07 05:08:41,960 INFO L226 Difference]: Without dead ends: 33 [2021-01-07 05:08:41,962 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:08:41,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-01-07 05:08:41,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2021-01-07 05:08:41,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-01-07 05:08:41,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2021-01-07 05:08:41,975 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 20 [2021-01-07 05:08:41,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:41,975 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2021-01-07 05:08:41,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-07 05:08:41,976 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2021-01-07 05:08:41,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-01-07 05:08:41,984 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:41,984 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:42,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:42,187 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:08:42,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:42,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1146749636, now seen corresponding path program 2 times [2021-01-07 05:08:42,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:42,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589977506] [2021-01-07 05:08:42,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:42,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:42,270 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:42,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589977506] [2021-01-07 05:08:42,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139154811] [2021-01-07 05:08:42,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-07 05:08:42,308 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-01-07 05:08:42,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:08:42,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-07 05:08:42,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:42,387 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-01-07 05:08:42,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-07 05:08:42,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2021-01-07 05:08:42,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071650852] [2021-01-07 05:08:42,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:08:42,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:42,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:08:42,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:08:42,390 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 4 states. [2021-01-07 05:08:42,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:42,421 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2021-01-07 05:08:42,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:08:42,422 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2021-01-07 05:08:42,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:42,422 INFO L225 Difference]: With dead ends: 29 [2021-01-07 05:08:42,423 INFO L226 Difference]: Without dead ends: 26 [2021-01-07 05:08:42,423 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:08:42,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-01-07 05:08:42,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-01-07 05:08:42,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-01-07 05:08:42,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2021-01-07 05:08:42,426 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 24 [2021-01-07 05:08:42,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:42,427 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2021-01-07 05:08:42,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:08:42,427 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2021-01-07 05:08:42,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-01-07 05:08:42,428 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:42,428 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:42,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:42,644 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:08:42,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:42,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1183676450, now seen corresponding path program 1 times [2021-01-07 05:08:42,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:42,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394568918] [2021-01-07 05:08:42,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:42,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:42,743 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:42,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394568918] [2021-01-07 05:08:42,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242782668] [2021-01-07 05:08:42,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-07 05:08:42,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:42,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-07 05:08:42,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:42,825 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:42,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:42,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-01-07 05:08:42,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094524672] [2021-01-07 05:08:42,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-07 05:08:42,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:42,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-07 05:08:42,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:08:42,827 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 8 states. [2021-01-07 05:08:42,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:42,861 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2021-01-07 05:08:42,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-07 05:08:42,862 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2021-01-07 05:08:42,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:42,863 INFO L225 Difference]: With dead ends: 33 [2021-01-07 05:08:42,863 INFO L226 Difference]: Without dead ends: 33 [2021-01-07 05:08:42,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:08:42,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-01-07 05:08:42,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2021-01-07 05:08:42,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-01-07 05:08:42,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2021-01-07 05:08:42,867 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 25 [2021-01-07 05:08:42,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:42,867 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2021-01-07 05:08:42,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-07 05:08:42,868 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2021-01-07 05:08:42,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-01-07 05:08:42,868 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:42,868 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:43,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:43,086 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:08:43,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:43,089 INFO L82 PathProgramCache]: Analyzing trace with hash 2067668863, now seen corresponding path program 2 times [2021-01-07 05:08:43,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:43,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526858191] [2021-01-07 05:08:43,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:43,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:43,196 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:43,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526858191] [2021-01-07 05:08:43,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495669420] [2021-01-07 05:08:43,197 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-07 05:08:43,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:08:43,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:08:43,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-07 05:08:43,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:43,322 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:43,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:43,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-01-07 05:08:43,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196963023] [2021-01-07 05:08:43,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-07 05:08:43,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:43,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-07 05:08:43,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:08:43,325 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 9 states. [2021-01-07 05:08:43,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:43,367 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2021-01-07 05:08:43,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-07 05:08:43,368 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2021-01-07 05:08:43,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:43,369 INFO L225 Difference]: With dead ends: 37 [2021-01-07 05:08:43,369 INFO L226 Difference]: Without dead ends: 37 [2021-01-07 05:08:43,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:08:43,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-01-07 05:08:43,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2021-01-07 05:08:43,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-01-07 05:08:43,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2021-01-07 05:08:43,374 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 29 [2021-01-07 05:08:43,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:43,374 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2021-01-07 05:08:43,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-07 05:08:43,375 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2021-01-07 05:08:43,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-01-07 05:08:43,376 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:43,376 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:43,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:43,590 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:08:43,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:43,591 INFO L82 PathProgramCache]: Analyzing trace with hash 241291356, now seen corresponding path program 3 times [2021-01-07 05:08:43,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:43,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404848463] [2021-01-07 05:08:43,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:43,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:43,728 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:43,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404848463] [2021-01-07 05:08:43,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644488809] [2021-01-07 05:08:43,729 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-07 05:08:43,797 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-01-07 05:08:43,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:08:43,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-07 05:08:43,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:43,859 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:43,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:43,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2021-01-07 05:08:43,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920666800] [2021-01-07 05:08:43,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-07 05:08:43,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:43,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-07 05:08:43,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-01-07 05:08:43,862 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 10 states. [2021-01-07 05:08:43,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:43,906 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2021-01-07 05:08:43,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-07 05:08:43,906 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2021-01-07 05:08:43,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:43,907 INFO L225 Difference]: With dead ends: 41 [2021-01-07 05:08:43,907 INFO L226 Difference]: Without dead ends: 41 [2021-01-07 05:08:43,908 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-01-07 05:08:43,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-01-07 05:08:43,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2021-01-07 05:08:43,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-01-07 05:08:43,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2021-01-07 05:08:43,912 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 33 [2021-01-07 05:08:43,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:43,912 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2021-01-07 05:08:43,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-07 05:08:43,913 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2021-01-07 05:08:43,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-01-07 05:08:43,914 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:43,914 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:44,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:44,129 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:08:44,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:44,130 INFO L82 PathProgramCache]: Analyzing trace with hash 341297849, now seen corresponding path program 4 times [2021-01-07 05:08:44,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:44,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865000203] [2021-01-07 05:08:44,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:44,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:44,232 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:44,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865000203] [2021-01-07 05:08:44,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104407839] [2021-01-07 05:08:44,232 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:44,304 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-07 05:08:44,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:08:44,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-07 05:08:44,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:44,384 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:44,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:44,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2021-01-07 05:08:44,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317784287] [2021-01-07 05:08:44,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-07 05:08:44,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:44,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-07 05:08:44,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-01-07 05:08:44,387 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 11 states. [2021-01-07 05:08:44,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:44,444 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions. [2021-01-07 05:08:44,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-07 05:08:44,445 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2021-01-07 05:08:44,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:44,445 INFO L225 Difference]: With dead ends: 45 [2021-01-07 05:08:44,446 INFO L226 Difference]: Without dead ends: 45 [2021-01-07 05:08:44,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-01-07 05:08:44,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-01-07 05:08:44,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2021-01-07 05:08:44,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2021-01-07 05:08:44,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2021-01-07 05:08:44,450 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 37 [2021-01-07 05:08:44,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:44,451 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2021-01-07 05:08:44,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-07 05:08:44,451 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2021-01-07 05:08:44,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-07 05:08:44,452 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:44,452 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:44,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:44,668 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:08:44,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:44,669 INFO L82 PathProgramCache]: Analyzing trace with hash -539013482, now seen corresponding path program 5 times [2021-01-07 05:08:44,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:44,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595501893] [2021-01-07 05:08:44,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:44,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:44,809 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:44,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595501893] [2021-01-07 05:08:44,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659165256] [2021-01-07 05:08:44,810 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:44,909 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-01-07 05:08:44,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:08:44,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-07 05:08:44,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:44,987 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:44,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:44,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-01-07 05:08:44,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681047196] [2021-01-07 05:08:44,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-07 05:08:44,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:44,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-07 05:08:44,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-01-07 05:08:44,989 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 12 states. [2021-01-07 05:08:45,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:45,053 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2021-01-07 05:08:45,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-07 05:08:45,054 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 41 [2021-01-07 05:08:45,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:45,055 INFO L225 Difference]: With dead ends: 49 [2021-01-07 05:08:45,055 INFO L226 Difference]: Without dead ends: 49 [2021-01-07 05:08:45,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-01-07 05:08:45,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-01-07 05:08:45,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2021-01-07 05:08:45,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2021-01-07 05:08:45,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2021-01-07 05:08:45,059 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 41 [2021-01-07 05:08:45,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:45,060 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2021-01-07 05:08:45,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-07 05:08:45,060 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2021-01-07 05:08:45,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-07 05:08:45,061 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:45,061 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:45,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-01-07 05:08:45,275 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:08:45,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:45,276 INFO L82 PathProgramCache]: Analyzing trace with hash -770204685, now seen corresponding path program 6 times [2021-01-07 05:08:45,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:45,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564700257] [2021-01-07 05:08:45,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:45,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:45,406 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:45,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564700257] [2021-01-07 05:08:45,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713310102] [2021-01-07 05:08:45,407 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:45,511 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-01-07 05:08:45,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:08:45,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-07 05:08:45,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:45,595 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:45,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:45,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2021-01-07 05:08:45,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451599907] [2021-01-07 05:08:45,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-07 05:08:45,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:45,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-07 05:08:45,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-01-07 05:08:45,598 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 13 states. [2021-01-07 05:08:45,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:45,663 INFO L93 Difference]: Finished difference Result 50 states and 51 transitions. [2021-01-07 05:08:45,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-07 05:08:45,663 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 45 [2021-01-07 05:08:45,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:45,664 INFO L225 Difference]: With dead ends: 50 [2021-01-07 05:08:45,664 INFO L226 Difference]: Without dead ends: 50 [2021-01-07 05:08:45,665 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-01-07 05:08:45,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-01-07 05:08:45,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-01-07 05:08:45,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-01-07 05:08:45,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2021-01-07 05:08:45,669 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 45 [2021-01-07 05:08:45,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:45,669 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2021-01-07 05:08:45,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-01-07 05:08:45,669 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2021-01-07 05:08:45,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-01-07 05:08:45,673 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:45,673 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:45,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:45,889 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2021-01-07 05:08:45,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:45,890 INFO L82 PathProgramCache]: Analyzing trace with hash 713028304, now seen corresponding path program 7 times [2021-01-07 05:08:45,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:45,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189940703] [2021-01-07 05:08:45,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:45,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-07 05:08:45,928 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-07 05:08:45,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-07 05:08:45,973 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-07 05:08:46,007 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-01-07 05:08:46,008 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-07 05:08:46,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-01-07 05:08:46,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.01 05:08:46 BoogieIcfgContainer [2021-01-07 05:08:46,077 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-07 05:08:46,079 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-07 05:08:46,079 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-07 05:08:46,079 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-07 05:08:46,080 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:08:39" (3/4) ... [2021-01-07 05:08:46,082 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-01-07 05:08:46,159 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/termination-crafted/NonTermination3-1.c-witness.graphml [2021-01-07 05:08:46,159 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-07 05:08:46,162 INFO L168 Benchmark]: Toolchain (without parser) took 6932.66 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 131.3 MB in the beginning and 78.7 MB in the end (delta: 52.6 MB). Peak memory consumption was 85.0 MB. Max. memory is 8.0 GB. [2021-01-07 05:08:46,163 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 156.2 MB. Free memory is still 130.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-07 05:08:46,163 INFO L168 Benchmark]: CACSL2BoogieTranslator took 250.05 ms. Allocated memory is still 156.2 MB. Free memory was 131.2 MB in the beginning and 122.2 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-01-07 05:08:46,164 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.10 ms. Allocated memory is still 156.2 MB. Free memory was 122.2 MB in the beginning and 120.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-07 05:08:46,164 INFO L168 Benchmark]: Boogie Preprocessor took 26.85 ms. Allocated memory is still 156.2 MB. Free memory was 120.7 MB in the beginning and 119.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-07 05:08:46,165 INFO L168 Benchmark]: RCFGBuilder took 412.21 ms. Allocated memory is still 156.2 MB. Free memory was 119.6 MB in the beginning and 106.6 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-01-07 05:08:46,166 INFO L168 Benchmark]: TraceAbstraction took 6111.29 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 106.2 MB in the beginning and 81.3 MB in the end (delta: 24.9 MB). Peak memory consumption was 57.7 MB. Max. memory is 8.0 GB. [2021-01-07 05:08:46,167 INFO L168 Benchmark]: Witness Printer took 80.73 ms. Allocated memory is still 187.7 MB. Free memory was 81.3 MB in the beginning and 78.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-07 05:08:46,173 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 156.2 MB. Free memory is still 130.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 250.05 ms. Allocated memory is still 156.2 MB. Free memory was 131.2 MB in the beginning and 122.2 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 39.10 ms. Allocated memory is still 156.2 MB. Free memory was 122.2 MB in the beginning and 120.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 26.85 ms. Allocated memory is still 156.2 MB. Free memory was 120.7 MB in the beginning and 119.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 412.21 ms. Allocated memory is still 156.2 MB. Free memory was 119.6 MB in the beginning and 106.6 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6111.29 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 106.2 MB in the beginning and 81.3 MB in the end (delta: 24.9 MB). Peak memory consumption was 57.7 MB. Max. memory is 8.0 GB. * Witness Printer took 80.73 ms. Allocated memory is still 187.7 MB. Free memory was 81.3 MB in the beginning and 78.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 20]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L10] int i = __VERIFIER_nondet_int(); [L11] int a[10]; [L13] int n = 0; [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n [L13] COND TRUE n < 10 [L14] a[n] = __VERIFIER_nondet_int() [L13] ++n [L13] COND FALSE !(n < 10) [L17] 0 <= i && i < 10 && a[i] >= 0 [L17] EXPR a[i] [L17] 0 <= i && i < 10 && a[i] >= 0 [L17] COND TRUE 0 <= i && i < 10 && a[i] >= 0 [L18] i = __VERIFIER_nondet_int() [L20] a[i] = 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.9s, OverallIterations: 14, TraceHistogramMax: 10, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 166 SDtfs, 211 SDslu, 483 SDs, 0 SdLazy, 316 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 339 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=13, 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, 13 MinimizatonAttempts, 24 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 618 NumberOfCodeBlocks, 602 NumberOfCodeBlocksAsserted, 48 NumberOfCheckSat, 547 ConstructedInterpolants, 1 QuantifiedInterpolants, 50953 SizeOfPredicates, 0 NumberOfNonLiveVariables, 778 ConjunctsInSsa, 70 ConjunctsInUnsatCore, 22 InterpolantComputations, 5 PerfectInterpolantSequences, 58/1126 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...