/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/locks/test_locks_6.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 17:35:38,298 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 17:35:38,303 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 17:35:38,366 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 17:35:38,367 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 17:35:38,371 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 17:35:38,375 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 17:35:38,381 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 17:35:38,385 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 17:35:38,387 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 17:35:38,388 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 17:35:38,390 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 17:35:38,390 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 17:35:38,392 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 17:35:38,393 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 17:35:38,395 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 17:35:38,396 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 17:35:38,397 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 17:35:38,399 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 17:35:38,402 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 17:35:38,404 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 17:35:38,406 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 17:35:38,407 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 17:35:38,408 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 17:35:38,411 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 17:35:38,423 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 17:35:38,424 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 17:35:38,434 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 17:35:38,436 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-23 17:35:38,464 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 17:35:38,465 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 17:35:38,466 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 17:35:38,467 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 17:35:38,467 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 17:35:38,467 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 17:35:38,467 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-23 17:35:38,467 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 17:35:38,468 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 17:35:38,468 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-23 17:35:38,468 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-23 17:35:38,468 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-23 17:35:38,468 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 17:35:38,469 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-23 17:35:38,469 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 17:35:38,469 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 17:35:38,469 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 17:35:38,470 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 17:35:38,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 17:35:38,470 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 17:35:38,471 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 17:35:38,471 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 17:35:38,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 17:35:38,471 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 17:35:38,472 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 17:35:38,925 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 17:35:38,957 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 17:35:38,961 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 17:35:38,962 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 17:35:38,963 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 17:35:38,964 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_6.c [2020-12-23 17:35:39,052 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/39eaeccc1/790103db8f3247d9b6f29c5a382b3220/FLAG5e783fc63 [2020-12-23 17:35:39,744 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 17:35:39,745 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/locks/test_locks_6.c [2020-12-23 17:35:39,757 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/39eaeccc1/790103db8f3247d9b6f29c5a382b3220/FLAG5e783fc63 [2020-12-23 17:35:40,092 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/39eaeccc1/790103db8f3247d9b6f29c5a382b3220 [2020-12-23 17:35:40,095 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 17:35:40,098 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 17:35:40,100 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 17:35:40,100 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 17:35:40,110 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 17:35:40,112 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 05:35:40" (1/1) ... [2020-12-23 17:35:40,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27ce387d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:40, skipping insertion in model container [2020-12-23 17:35:40,115 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 05:35:40" (1/1) ... [2020-12-23 17:35:40,127 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 17:35:40,154 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~cond~0,] left hand side expression in assignment: lhs: VariableLHS[~lk1~0,] left hand side expression in assignment: lhs: VariableLHS[~lk2~0,] left hand side expression in assignment: lhs: VariableLHS[~lk3~0,] left hand side expression in assignment: lhs: VariableLHS[~lk4~0,] left hand side expression in assignment: lhs: VariableLHS[~lk5~0,] left hand side expression in assignment: lhs: VariableLHS[~lk6~0,] left hand side expression in assignment: lhs: VariableLHS[~lk1~0,] left hand side expression in assignment: lhs: VariableLHS[~lk2~0,] left hand side expression in assignment: lhs: VariableLHS[~lk3~0,] left hand side expression in assignment: lhs: VariableLHS[~lk4~0,] left hand side expression in assignment: lhs: VariableLHS[~lk5~0,] left hand side expression in assignment: lhs: VariableLHS[~lk6~0,] left hand side expression in assignment: lhs: VariableLHS[~lk1~0,] left hand side expression in assignment: lhs: VariableLHS[~lk2~0,] left hand side expression in assignment: lhs: VariableLHS[~lk3~0,] left hand side expression in assignment: lhs: VariableLHS[~lk4~0,] left hand side expression in assignment: lhs: VariableLHS[~lk5~0,] left hand side expression in assignment: lhs: VariableLHS[~lk6~0,] [2020-12-23 17:35:40,379 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/locks/test_locks_6.c[2544,2557] [2020-12-23 17:35:40,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 17:35:40,400 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~cond~0,] left hand side expression in assignment: lhs: VariableLHS[~lk1~0,] left hand side expression in assignment: lhs: VariableLHS[~lk2~0,] left hand side expression in assignment: lhs: VariableLHS[~lk3~0,] left hand side expression in assignment: lhs: VariableLHS[~lk4~0,] left hand side expression in assignment: lhs: VariableLHS[~lk5~0,] left hand side expression in assignment: lhs: VariableLHS[~lk6~0,] left hand side expression in assignment: lhs: VariableLHS[~lk1~0,] left hand side expression in assignment: lhs: VariableLHS[~lk2~0,] left hand side expression in assignment: lhs: VariableLHS[~lk3~0,] left hand side expression in assignment: lhs: VariableLHS[~lk4~0,] left hand side expression in assignment: lhs: VariableLHS[~lk5~0,] left hand side expression in assignment: lhs: VariableLHS[~lk6~0,] left hand side expression in assignment: lhs: VariableLHS[~lk1~0,] left hand side expression in assignment: lhs: VariableLHS[~lk2~0,] left hand side expression in assignment: lhs: VariableLHS[~lk3~0,] left hand side expression in assignment: lhs: VariableLHS[~lk4~0,] left hand side expression in assignment: lhs: VariableLHS[~lk5~0,] left hand side expression in assignment: lhs: VariableLHS[~lk6~0,] [2020-12-23 17:35:40,430 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/locks/test_locks_6.c[2544,2557] [2020-12-23 17:35:40,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 17:35:40,458 INFO L208 MainTranslator]: Completed translation [2020-12-23 17:35:40,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:40 WrapperNode [2020-12-23 17:35:40,459 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 17:35:40,461 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 17:35:40,461 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 17:35:40,461 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 17:35:40,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:40" (1/1) ... [2020-12-23 17:35:40,500 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:40" (1/1) ... [2020-12-23 17:35:40,542 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 17:35:40,545 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 17:35:40,545 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 17:35:40,547 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 17:35:40,560 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:40" (1/1) ... [2020-12-23 17:35:40,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:40" (1/1) ... [2020-12-23 17:35:40,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:40" (1/1) ... [2020-12-23 17:35:40,568 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:40" (1/1) ... [2020-12-23 17:35:40,590 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:40" (1/1) ... [2020-12-23 17:35:40,600 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:40" (1/1) ... [2020-12-23 17:35:40,603 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:40" (1/1) ... [2020-12-23 17:35:40,612 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 17:35:40,613 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 17:35:40,613 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 17:35:40,614 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 17:35:40,616 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:40" (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 [2020-12-23 17:35:40,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 17:35:40,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 17:35:40,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 17:35:40,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 17:35:41,333 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 17:35:41,333 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2020-12-23 17:35:41,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:35:41 BoogieIcfgContainer [2020-12-23 17:35:41,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 17:35:41,339 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 17:35:41,339 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 17:35:41,345 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 17:35:41,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 05:35:40" (1/3) ... [2020-12-23 17:35:41,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27209f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 05:35:41, skipping insertion in model container [2020-12-23 17:35:41,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:40" (2/3) ... [2020-12-23 17:35:41,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27209f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 05:35:41, skipping insertion in model container [2020-12-23 17:35:41,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:35:41" (3/3) ... [2020-12-23 17:35:41,351 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_6.c [2020-12-23 17:35:41,391 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 17:35:41,399 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-23 17:35:41,503 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-23 17:35:41,552 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 17:35:41,553 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-23 17:35:41,553 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 17:35:41,553 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 17:35:41,554 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 17:35:41,554 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 17:35:41,554 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 17:35:41,554 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 17:35:41,575 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-12-23 17:35:41,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-23 17:35:41,585 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:41,586 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-23 17:35:41,587 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:41,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:41,597 INFO L82 PathProgramCache]: Analyzing trace with hash 28807962, now seen corresponding path program 1 times [2020-12-23 17:35:41,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:41,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177965439] [2020-12-23 17:35:41,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:41,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:41,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:41,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177965439] [2020-12-23 17:35:41,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:41,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 17:35:41,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851909716] [2020-12-23 17:35:41,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 17:35:41,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:41,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 17:35:41,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 17:35:41,844 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-12-23 17:35:41,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:41,863 INFO L93 Difference]: Finished difference Result 29 states and 46 transitions. [2020-12-23 17:35:41,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 17:35:41,865 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-12-23 17:35:41,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:41,877 INFO L225 Difference]: With dead ends: 29 [2020-12-23 17:35:41,877 INFO L226 Difference]: Without dead ends: 27 [2020-12-23 17:35:41,879 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 17:35:41,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-23 17:35:41,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-12-23 17:35:41,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-23 17:35:41,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 44 transitions. [2020-12-23 17:35:41,925 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 44 transitions. Word has length 5 [2020-12-23 17:35:41,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:41,926 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 44 transitions. [2020-12-23 17:35:41,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 17:35:41,926 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 44 transitions. [2020-12-23 17:35:41,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-23 17:35:41,927 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:41,927 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-23 17:35:41,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 17:35:41,928 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:41,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:41,929 INFO L82 PathProgramCache]: Analyzing trace with hash 889695787, now seen corresponding path program 1 times [2020-12-23 17:35:41,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:41,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146270401] [2020-12-23 17:35:41,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:41,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:41,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:42,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146270401] [2020-12-23 17:35:42,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:42,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 17:35:42,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760302032] [2020-12-23 17:35:42,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:42,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:42,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:42,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:42,004 INFO L87 Difference]: Start difference. First operand 27 states and 44 transitions. Second operand 3 states. [2020-12-23 17:35:42,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:42,026 INFO L93 Difference]: Finished difference Result 26 states and 43 transitions. [2020-12-23 17:35:42,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:42,027 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-23 17:35:42,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:42,029 INFO L225 Difference]: With dead ends: 26 [2020-12-23 17:35:42,029 INFO L226 Difference]: Without dead ends: 24 [2020-12-23 17:35:42,033 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 [2020-12-23 17:35:42,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-12-23 17:35:42,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-12-23 17:35:42,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-12-23 17:35:42,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 41 transitions. [2020-12-23 17:35:42,043 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 41 transitions. Word has length 6 [2020-12-23 17:35:42,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:42,043 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 41 transitions. [2020-12-23 17:35:42,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:42,044 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 41 transitions. [2020-12-23 17:35:42,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 17:35:42,046 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:42,046 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:42,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 17:35:42,047 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:42,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:42,049 INFO L82 PathProgramCache]: Analyzing trace with hash -721193823, now seen corresponding path program 1 times [2020-12-23 17:35:42,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:42,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377648309] [2020-12-23 17:35:42,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:42,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:42,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:42,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377648309] [2020-12-23 17:35:42,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:42,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:42,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803312730] [2020-12-23 17:35:42,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:42,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:42,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:42,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:42,142 INFO L87 Difference]: Start difference. First operand 24 states and 41 transitions. Second operand 3 states. [2020-12-23 17:35:42,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:42,170 INFO L93 Difference]: Finished difference Result 45 states and 77 transitions. [2020-12-23 17:35:42,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:42,171 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-12-23 17:35:42,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:42,172 INFO L225 Difference]: With dead ends: 45 [2020-12-23 17:35:42,172 INFO L226 Difference]: Without dead ends: 45 [2020-12-23 17:35:42,173 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 [2020-12-23 17:35:42,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-12-23 17:35:42,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 31. [2020-12-23 17:35:42,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-23 17:35:42,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 54 transitions. [2020-12-23 17:35:42,181 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 54 transitions. Word has length 13 [2020-12-23 17:35:42,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:42,181 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 54 transitions. [2020-12-23 17:35:42,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:42,182 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 54 transitions. [2020-12-23 17:35:42,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 17:35:42,182 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:42,183 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:42,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 17:35:42,183 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:42,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:42,184 INFO L82 PathProgramCache]: Analyzing trace with hash -41135453, now seen corresponding path program 1 times [2020-12-23 17:35:42,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:42,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740066372] [2020-12-23 17:35:42,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:42,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:42,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:42,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740066372] [2020-12-23 17:35:42,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:42,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:42,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984051219] [2020-12-23 17:35:42,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:42,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:42,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:42,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:42,239 INFO L87 Difference]: Start difference. First operand 31 states and 54 transitions. Second operand 3 states. [2020-12-23 17:35:42,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:42,263 INFO L93 Difference]: Finished difference Result 45 states and 75 transitions. [2020-12-23 17:35:42,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:42,264 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-12-23 17:35:42,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:42,265 INFO L225 Difference]: With dead ends: 45 [2020-12-23 17:35:42,266 INFO L226 Difference]: Without dead ends: 45 [2020-12-23 17:35:42,266 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 [2020-12-23 17:35:42,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-12-23 17:35:42,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2020-12-23 17:35:42,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-23 17:35:42,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 74 transitions. [2020-12-23 17:35:42,275 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 74 transitions. Word has length 13 [2020-12-23 17:35:42,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:42,275 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 74 transitions. [2020-12-23 17:35:42,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:42,275 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 74 transitions. [2020-12-23 17:35:42,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 17:35:42,276 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:42,276 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:42,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 17:35:42,277 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:42,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:42,278 INFO L82 PathProgramCache]: Analyzing trace with hash -881957389, now seen corresponding path program 1 times [2020-12-23 17:35:42,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:42,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314598299] [2020-12-23 17:35:42,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:42,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:42,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:42,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314598299] [2020-12-23 17:35:42,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:42,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:42,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335538012] [2020-12-23 17:35:42,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:42,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:42,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:42,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:42,334 INFO L87 Difference]: Start difference. First operand 43 states and 74 transitions. Second operand 3 states. [2020-12-23 17:35:42,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:42,357 INFO L93 Difference]: Finished difference Result 48 states and 77 transitions. [2020-12-23 17:35:42,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:42,358 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-12-23 17:35:42,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:42,359 INFO L225 Difference]: With dead ends: 48 [2020-12-23 17:35:42,360 INFO L226 Difference]: Without dead ends: 48 [2020-12-23 17:35:42,360 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 [2020-12-23 17:35:42,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-12-23 17:35:42,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2020-12-23 17:35:42,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-23 17:35:42,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 76 transitions. [2020-12-23 17:35:42,369 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 76 transitions. Word has length 14 [2020-12-23 17:35:42,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:42,369 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 76 transitions. [2020-12-23 17:35:42,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:42,369 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 76 transitions. [2020-12-23 17:35:42,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 17:35:42,370 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:42,370 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:42,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 17:35:42,371 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:42,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:42,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1274984399, now seen corresponding path program 1 times [2020-12-23 17:35:42,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:42,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276570317] [2020-12-23 17:35:42,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:42,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:42,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:42,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276570317] [2020-12-23 17:35:42,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:42,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:42,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611699512] [2020-12-23 17:35:42,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:42,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:42,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:42,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:42,459 INFO L87 Difference]: Start difference. First operand 46 states and 76 transitions. Second operand 3 states. [2020-12-23 17:35:42,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:42,491 INFO L93 Difference]: Finished difference Result 83 states and 138 transitions. [2020-12-23 17:35:42,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:42,495 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-12-23 17:35:42,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:42,497 INFO L225 Difference]: With dead ends: 83 [2020-12-23 17:35:42,497 INFO L226 Difference]: Without dead ends: 83 [2020-12-23 17:35:42,498 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 [2020-12-23 17:35:42,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-12-23 17:35:42,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 61. [2020-12-23 17:35:42,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-12-23 17:35:42,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 101 transitions. [2020-12-23 17:35:42,518 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 101 transitions. Word has length 14 [2020-12-23 17:35:42,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:42,521 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 101 transitions. [2020-12-23 17:35:42,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:42,522 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 101 transitions. [2020-12-23 17:35:42,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 17:35:42,523 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:42,523 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:42,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 17:35:42,524 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:42,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:42,528 INFO L82 PathProgramCache]: Analyzing trace with hash -594926029, now seen corresponding path program 1 times [2020-12-23 17:35:42,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:42,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397572629] [2020-12-23 17:35:42,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:42,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:42,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:42,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397572629] [2020-12-23 17:35:42,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:42,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:42,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63327477] [2020-12-23 17:35:42,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:42,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:42,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:42,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:42,623 INFO L87 Difference]: Start difference. First operand 61 states and 101 transitions. Second operand 3 states. [2020-12-23 17:35:42,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:42,670 INFO L93 Difference]: Finished difference Result 85 states and 136 transitions. [2020-12-23 17:35:42,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:42,671 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-12-23 17:35:42,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:42,673 INFO L225 Difference]: With dead ends: 85 [2020-12-23 17:35:42,673 INFO L226 Difference]: Without dead ends: 85 [2020-12-23 17:35:42,674 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 [2020-12-23 17:35:42,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-12-23 17:35:42,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 83. [2020-12-23 17:35:42,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-12-23 17:35:42,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 135 transitions. [2020-12-23 17:35:42,701 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 135 transitions. Word has length 14 [2020-12-23 17:35:42,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:42,701 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 135 transitions. [2020-12-23 17:35:42,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:42,702 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 135 transitions. [2020-12-23 17:35:42,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 17:35:42,703 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:42,703 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:42,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 17:35:42,707 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:42,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:42,708 INFO L82 PathProgramCache]: Analyzing trace with hash -869595720, now seen corresponding path program 1 times [2020-12-23 17:35:42,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:42,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375429826] [2020-12-23 17:35:42,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:42,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:42,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:42,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375429826] [2020-12-23 17:35:42,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:42,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:42,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101190998] [2020-12-23 17:35:42,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:42,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:42,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:42,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:42,749 INFO L87 Difference]: Start difference. First operand 83 states and 135 transitions. Second operand 3 states. [2020-12-23 17:35:42,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:42,769 INFO L93 Difference]: Finished difference Result 87 states and 136 transitions. [2020-12-23 17:35:42,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:42,770 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-12-23 17:35:42,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:42,771 INFO L225 Difference]: With dead ends: 87 [2020-12-23 17:35:42,772 INFO L226 Difference]: Without dead ends: 87 [2020-12-23 17:35:42,772 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 [2020-12-23 17:35:42,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-12-23 17:35:42,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2020-12-23 17:35:42,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-12-23 17:35:42,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 135 transitions. [2020-12-23 17:35:42,781 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 135 transitions. Word has length 15 [2020-12-23 17:35:42,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:42,782 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 135 transitions. [2020-12-23 17:35:42,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:42,782 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 135 transitions. [2020-12-23 17:35:42,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 17:35:42,783 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:42,783 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:42,784 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 17:35:42,784 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:42,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:42,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1262622730, now seen corresponding path program 1 times [2020-12-23 17:35:42,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:42,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617661194] [2020-12-23 17:35:42,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:42,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:42,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:42,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617661194] [2020-12-23 17:35:42,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:42,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:42,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193075331] [2020-12-23 17:35:42,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:42,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:42,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:42,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:42,839 INFO L87 Difference]: Start difference. First operand 85 states and 135 transitions. Second operand 3 states. [2020-12-23 17:35:42,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:42,864 INFO L93 Difference]: Finished difference Result 159 states and 244 transitions. [2020-12-23 17:35:42,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:42,868 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-12-23 17:35:42,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:42,870 INFO L225 Difference]: With dead ends: 159 [2020-12-23 17:35:42,870 INFO L226 Difference]: Without dead ends: 159 [2020-12-23 17:35:42,871 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 [2020-12-23 17:35:42,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-12-23 17:35:42,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 157. [2020-12-23 17:35:42,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-12-23 17:35:42,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 243 transitions. [2020-12-23 17:35:42,903 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 243 transitions. Word has length 15 [2020-12-23 17:35:42,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:42,903 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 243 transitions. [2020-12-23 17:35:42,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:42,904 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 243 transitions. [2020-12-23 17:35:42,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 17:35:42,907 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:42,908 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:42,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 17:35:42,911 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:42,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:42,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1942681100, now seen corresponding path program 1 times [2020-12-23 17:35:42,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:42,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846894275] [2020-12-23 17:35:42,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:42,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:42,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:42,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846894275] [2020-12-23 17:35:42,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:42,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:42,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851478411] [2020-12-23 17:35:42,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:42,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:42,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:42,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:42,973 INFO L87 Difference]: Start difference. First operand 157 states and 243 transitions. Second operand 3 states. [2020-12-23 17:35:42,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:42,989 INFO L93 Difference]: Finished difference Result 191 states and 296 transitions. [2020-12-23 17:35:42,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:42,990 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-12-23 17:35:42,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:42,992 INFO L225 Difference]: With dead ends: 191 [2020-12-23 17:35:42,992 INFO L226 Difference]: Without dead ends: 191 [2020-12-23 17:35:42,993 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 [2020-12-23 17:35:42,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-12-23 17:35:43,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 157. [2020-12-23 17:35:43,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-12-23 17:35:43,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 239 transitions. [2020-12-23 17:35:43,006 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 239 transitions. Word has length 15 [2020-12-23 17:35:43,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:43,007 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 239 transitions. [2020-12-23 17:35:43,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:43,007 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 239 transitions. [2020-12-23 17:35:43,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 17:35:43,009 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:43,010 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:43,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 17:35:43,010 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:43,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:43,011 INFO L82 PathProgramCache]: Analyzing trace with hash -486383640, now seen corresponding path program 1 times [2020-12-23 17:35:43,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:43,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403149894] [2020-12-23 17:35:43,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:43,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:43,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:43,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403149894] [2020-12-23 17:35:43,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:43,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:43,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974794940] [2020-12-23 17:35:43,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:43,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:43,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:43,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:43,048 INFO L87 Difference]: Start difference. First operand 157 states and 239 transitions. Second operand 3 states. [2020-12-23 17:35:43,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:43,079 INFO L93 Difference]: Finished difference Result 275 states and 416 transitions. [2020-12-23 17:35:43,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:43,080 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-12-23 17:35:43,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:43,082 INFO L225 Difference]: With dead ends: 275 [2020-12-23 17:35:43,083 INFO L226 Difference]: Without dead ends: 275 [2020-12-23 17:35:43,083 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 [2020-12-23 17:35:43,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-12-23 17:35:43,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 225. [2020-12-23 17:35:43,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-12-23 17:35:43,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 335 transitions. [2020-12-23 17:35:43,100 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 335 transitions. Word has length 16 [2020-12-23 17:35:43,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:43,101 INFO L481 AbstractCegarLoop]: Abstraction has 225 states and 335 transitions. [2020-12-23 17:35:43,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:43,101 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 335 transitions. [2020-12-23 17:35:43,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 17:35:43,103 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:43,103 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:43,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 17:35:43,104 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:43,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:43,105 INFO L82 PathProgramCache]: Analyzing trace with hash 193674730, now seen corresponding path program 1 times [2020-12-23 17:35:43,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:43,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722468898] [2020-12-23 17:35:43,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:43,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:43,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:43,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722468898] [2020-12-23 17:35:43,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:43,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:43,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812208382] [2020-12-23 17:35:43,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:43,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:43,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:43,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:43,139 INFO L87 Difference]: Start difference. First operand 225 states and 335 transitions. Second operand 3 states. [2020-12-23 17:35:43,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:43,158 INFO L93 Difference]: Finished difference Result 299 states and 428 transitions. [2020-12-23 17:35:43,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:43,158 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-12-23 17:35:43,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:43,161 INFO L225 Difference]: With dead ends: 299 [2020-12-23 17:35:43,161 INFO L226 Difference]: Without dead ends: 299 [2020-12-23 17:35:43,162 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 [2020-12-23 17:35:43,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-12-23 17:35:43,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 297. [2020-12-23 17:35:43,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2020-12-23 17:35:43,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 427 transitions. [2020-12-23 17:35:43,178 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 427 transitions. Word has length 16 [2020-12-23 17:35:43,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:43,178 INFO L481 AbstractCegarLoop]: Abstraction has 297 states and 427 transitions. [2020-12-23 17:35:43,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:43,179 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 427 transitions. [2020-12-23 17:35:43,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 17:35:43,181 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:43,181 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:43,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 17:35:43,182 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:43,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:43,183 INFO L82 PathProgramCache]: Analyzing trace with hash 2102192011, now seen corresponding path program 1 times [2020-12-23 17:35:43,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:43,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723391102] [2020-12-23 17:35:43,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:43,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:43,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:43,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723391102] [2020-12-23 17:35:43,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:43,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:43,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016168941] [2020-12-23 17:35:43,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:43,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:43,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:43,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:43,219 INFO L87 Difference]: Start difference. First operand 297 states and 427 transitions. Second operand 3 states. [2020-12-23 17:35:43,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:43,255 INFO L93 Difference]: Finished difference Result 311 states and 436 transitions. [2020-12-23 17:35:43,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:43,256 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-12-23 17:35:43,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:43,259 INFO L225 Difference]: With dead ends: 311 [2020-12-23 17:35:43,259 INFO L226 Difference]: Without dead ends: 311 [2020-12-23 17:35:43,260 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 [2020-12-23 17:35:43,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-12-23 17:35:43,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 309. [2020-12-23 17:35:43,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2020-12-23 17:35:43,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 435 transitions. [2020-12-23 17:35:43,273 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 435 transitions. Word has length 17 [2020-12-23 17:35:43,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:43,273 INFO L481 AbstractCegarLoop]: Abstraction has 309 states and 435 transitions. [2020-12-23 17:35:43,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:43,274 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 435 transitions. [2020-12-23 17:35:43,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 17:35:43,276 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:43,276 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:43,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 17:35:43,277 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:43,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:43,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1709165001, now seen corresponding path program 1 times [2020-12-23 17:35:43,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:43,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165252565] [2020-12-23 17:35:43,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:43,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:43,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:43,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165252565] [2020-12-23 17:35:43,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:43,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:43,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621271241] [2020-12-23 17:35:43,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:43,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:43,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:43,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:43,313 INFO L87 Difference]: Start difference. First operand 309 states and 435 transitions. Second operand 3 states. [2020-12-23 17:35:43,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:43,331 INFO L93 Difference]: Finished difference Result 519 states and 716 transitions. [2020-12-23 17:35:43,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:43,332 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-12-23 17:35:43,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:43,336 INFO L225 Difference]: With dead ends: 519 [2020-12-23 17:35:43,336 INFO L226 Difference]: Without dead ends: 519 [2020-12-23 17:35:43,337 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 [2020-12-23 17:35:43,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2020-12-23 17:35:43,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 453. [2020-12-23 17:35:43,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2020-12-23 17:35:43,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 619 transitions. [2020-12-23 17:35:43,354 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 619 transitions. Word has length 17 [2020-12-23 17:35:43,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:43,355 INFO L481 AbstractCegarLoop]: Abstraction has 453 states and 619 transitions. [2020-12-23 17:35:43,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:43,355 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 619 transitions. [2020-12-23 17:35:43,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 17:35:43,357 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:43,357 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:43,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 17:35:43,358 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:43,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:43,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1905743925, now seen corresponding path program 1 times [2020-12-23 17:35:43,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:43,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099653870] [2020-12-23 17:35:43,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:43,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:43,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:43,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099653870] [2020-12-23 17:35:43,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:43,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:43,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474042476] [2020-12-23 17:35:43,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:43,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:43,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:43,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:43,391 INFO L87 Difference]: Start difference. First operand 453 states and 619 transitions. Second operand 3 states. [2020-12-23 17:35:43,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:43,410 INFO L93 Difference]: Finished difference Result 583 states and 756 transitions. [2020-12-23 17:35:43,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:43,411 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-12-23 17:35:43,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:43,415 INFO L225 Difference]: With dead ends: 583 [2020-12-23 17:35:43,415 INFO L226 Difference]: Without dead ends: 583 [2020-12-23 17:35:43,420 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 [2020-12-23 17:35:43,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2020-12-23 17:35:43,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 581. [2020-12-23 17:35:43,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2020-12-23 17:35:43,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 755 transitions. [2020-12-23 17:35:43,440 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 755 transitions. Word has length 17 [2020-12-23 17:35:43,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:43,443 INFO L481 AbstractCegarLoop]: Abstraction has 581 states and 755 transitions. [2020-12-23 17:35:43,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:43,443 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 755 transitions. [2020-12-23 17:35:43,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 17:35:43,445 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:43,446 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:43,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 17:35:43,446 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:43,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:43,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1444723487, now seen corresponding path program 1 times [2020-12-23 17:35:43,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:43,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412346344] [2020-12-23 17:35:43,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:43,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:43,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:43,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412346344] [2020-12-23 17:35:43,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:43,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:43,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537692229] [2020-12-23 17:35:43,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:43,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:43,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:43,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:43,494 INFO L87 Difference]: Start difference. First operand 581 states and 755 transitions. Second operand 3 states. [2020-12-23 17:35:43,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:43,512 INFO L93 Difference]: Finished difference Result 599 states and 756 transitions. [2020-12-23 17:35:43,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:43,513 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-12-23 17:35:43,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:43,517 INFO L225 Difference]: With dead ends: 599 [2020-12-23 17:35:43,517 INFO L226 Difference]: Without dead ends: 599 [2020-12-23 17:35:43,518 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 [2020-12-23 17:35:43,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2020-12-23 17:35:43,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 597. [2020-12-23 17:35:43,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 597 states. [2020-12-23 17:35:43,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 755 transitions. [2020-12-23 17:35:43,539 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 755 transitions. Word has length 18 [2020-12-23 17:35:43,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:43,539 INFO L481 AbstractCegarLoop]: Abstraction has 597 states and 755 transitions. [2020-12-23 17:35:43,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:43,540 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 755 transitions. [2020-12-23 17:35:43,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 17:35:43,541 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:43,542 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:43,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 17:35:43,542 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:43,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:43,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1051696477, now seen corresponding path program 1 times [2020-12-23 17:35:43,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:43,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026275957] [2020-12-23 17:35:43,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:43,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:43,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:43,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026275957] [2020-12-23 17:35:43,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:43,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:43,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581706299] [2020-12-23 17:35:43,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:43,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:43,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:43,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:43,574 INFO L87 Difference]: Start difference. First operand 597 states and 755 transitions. Second operand 3 states. [2020-12-23 17:35:43,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:43,593 INFO L93 Difference]: Finished difference Result 965 states and 1171 transitions. [2020-12-23 17:35:43,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:43,595 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-12-23 17:35:43,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:43,601 INFO L225 Difference]: With dead ends: 965 [2020-12-23 17:35:43,601 INFO L226 Difference]: Without dead ends: 965 [2020-12-23 17:35:43,602 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 [2020-12-23 17:35:43,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 965 states. [2020-12-23 17:35:43,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 965 to 901. [2020-12-23 17:35:43,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 901 states. [2020-12-23 17:35:43,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1107 transitions. [2020-12-23 17:35:43,630 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1107 transitions. Word has length 18 [2020-12-23 17:35:43,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:43,631 INFO L481 AbstractCegarLoop]: Abstraction has 901 states and 1107 transitions. [2020-12-23 17:35:43,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:43,631 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1107 transitions. [2020-12-23 17:35:43,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 17:35:43,633 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:43,633 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:43,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-23 17:35:43,634 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:43,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:43,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1731754847, now seen corresponding path program 1 times [2020-12-23 17:35:43,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:43,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435965464] [2020-12-23 17:35:43,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:43,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:43,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 17:35:43,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435965464] [2020-12-23 17:35:43,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:43,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:43,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602538894] [2020-12-23 17:35:43,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:43,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:43,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:43,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:43,661 INFO L87 Difference]: Start difference. First operand 901 states and 1107 transitions. Second operand 3 states. [2020-12-23 17:35:43,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:43,683 INFO L93 Difference]: Finished difference Result 1123 states and 1282 transitions. [2020-12-23 17:35:43,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:43,683 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-12-23 17:35:43,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:43,684 INFO L225 Difference]: With dead ends: 1123 [2020-12-23 17:35:43,684 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 17:35:43,685 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 [2020-12-23 17:35:43,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 17:35:43,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 17:35:43,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 17:35:43,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 17:35:43,686 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-12-23 17:35:43,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:43,686 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 17:35:43,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:43,686 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 17:35:43,686 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 17:35:43,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-23 17:35:43,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 05:35:43 BoogieIcfgContainer [2020-12-23 17:35:43,697 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 17:35:43,698 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 17:35:43,698 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 17:35:43,699 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 17:35:43,700 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:35:41" (3/4) ... [2020-12-23 17:35:43,704 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 17:35:43,723 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-23 17:35:43,724 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-23 17:35:43,724 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-23 17:35:43,724 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 17:35:43,782 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/locks/test_locks_6.c-witness.graphml [2020-12-23 17:35:43,782 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 17:35:43,785 INFO L168 Benchmark]: Toolchain (without parser) took 3686.14 ms. Allocated memory was 164.6 MB in the beginning and 207.6 MB in the end (delta: 43.0 MB). Free memory was 139.6 MB in the beginning and 127.5 MB in the end (delta: 12.1 MB). Peak memory consumption was 56.1 MB. Max. memory is 8.0 GB. [2020-12-23 17:35:43,786 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 164.6 MB. Free memory is still 139.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 17:35:43,786 INFO L168 Benchmark]: CACSL2BoogieTranslator took 359.54 ms. Allocated memory is still 164.6 MB. Free memory was 139.5 MB in the beginning and 129.5 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-23 17:35:43,787 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.00 ms. Allocated memory is still 164.6 MB. Free memory was 129.5 MB in the beginning and 128.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 17:35:43,788 INFO L168 Benchmark]: Boogie Preprocessor took 67.19 ms. Allocated memory is still 164.6 MB. Free memory was 127.8 MB in the beginning and 126.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 17:35:43,788 INFO L168 Benchmark]: RCFGBuilder took 723.23 ms. Allocated memory is still 164.6 MB. Free memory was 126.7 MB in the beginning and 110.6 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2020-12-23 17:35:43,789 INFO L168 Benchmark]: TraceAbstraction took 2357.94 ms. Allocated memory was 164.6 MB in the beginning and 207.6 MB in the end (delta: 43.0 MB). Free memory was 110.2 MB in the beginning and 130.5 MB in the end (delta: -20.3 MB). Peak memory consumption was 23.6 MB. Max. memory is 8.0 GB. [2020-12-23 17:35:43,789 INFO L168 Benchmark]: Witness Printer took 84.78 ms. Allocated memory is still 207.6 MB. Free memory was 130.5 MB in the beginning and 127.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-23 17:35:43,793 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 164.6 MB. Free memory is still 139.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 359.54 ms. Allocated memory is still 164.6 MB. Free memory was 139.5 MB in the beginning and 129.5 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 82.00 ms. Allocated memory is still 164.6 MB. Free memory was 129.5 MB in the beginning and 128.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 67.19 ms. Allocated memory is still 164.6 MB. Free memory was 127.8 MB in the beginning and 126.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 723.23 ms. Allocated memory is still 164.6 MB. Free memory was 126.7 MB in the beginning and 110.6 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2357.94 ms. Allocated memory was 164.6 MB in the beginning and 207.6 MB in the end (delta: 43.0 MB). Free memory was 110.2 MB in the beginning and 130.5 MB in the end (delta: -20.3 MB). Peak memory consumption was 23.6 MB. Max. memory is 8.0 GB. * Witness Printer took 84.78 ms. Allocated memory is still 207.6 MB. Free memory was 130.5 MB in the beginning and 127.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 107]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 6]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.1s, OverallIterations: 18, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 909 SDtfs, 425 SDslu, 523 SDs, 0 SdLazy, 86 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=901occurred in iteration=17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 18 MinimizatonAttempts, 268 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 261 NumberOfCodeBlocks, 261 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 243 ConstructedInterpolants, 0 QuantifiedInterpolants, 6891 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...