/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_7.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 17:35:41,602 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 17:35:41,605 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 17:35:41,674 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 17:35:41,675 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 17:35:41,682 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 17:35:41,687 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 17:35:41,696 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 17:35:41,702 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 17:35:41,709 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 17:35:41,715 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 17:35:41,717 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 17:35:41,718 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 17:35:41,722 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 17:35:41,725 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 17:35:41,727 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 17:35:41,729 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 17:35:41,735 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 17:35:41,761 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 17:35:41,768 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 17:35:41,772 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 17:35:41,774 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 17:35:41,776 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 17:35:41,778 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 17:35:41,781 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 17:35:41,794 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 17:35:41,796 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 17:35:41,797 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 17:35:41,798 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 17:35:41,830 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 17:35:41,831 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 17:35:41,833 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 17:35:41,833 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 17:35:41,833 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 17:35:41,834 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 17:35:41,834 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-23 17:35:41,834 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 17:35:41,834 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 17:35:41,835 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-23 17:35:41,835 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-23 17:35:41,835 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-23 17:35:41,836 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 17:35:41,836 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-23 17:35:41,836 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 17:35:41,837 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 17:35:41,837 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 17:35:41,837 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 17:35:41,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 17:35:41,838 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 17:35:41,838 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 17:35:41,838 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 17:35:41,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 17:35:41,839 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 17:35:41,839 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 17:35:42,279 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 17:35:42,314 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 17:35:42,318 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 17:35:42,320 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 17:35:42,321 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 17:35:42,322 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_7.c [2020-12-23 17:35:42,423 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a8d47ea51/c3c1fc9739924632908569a1363c4eb3/FLAGa6f68dcf0 [2020-12-23 17:35:43,336 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 17:35:43,340 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/locks/test_locks_7.c [2020-12-23 17:35:43,357 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a8d47ea51/c3c1fc9739924632908569a1363c4eb3/FLAGa6f68dcf0 [2020-12-23 17:35:43,610 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a8d47ea51/c3c1fc9739924632908569a1363c4eb3 [2020-12-23 17:35:43,616 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 17:35:43,623 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 17:35:43,628 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 17:35:43,629 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 17:35:43,635 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 17:35:43,636 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 05:35:43" (1/1) ... [2020-12-23 17:35:43,638 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60b86991 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:43, skipping insertion in model container [2020-12-23 17:35:43,639 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 05:35:43" (1/1) ... [2020-12-23 17:35:43,650 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 17:35:43,675 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[~lk7~0,] 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[~lk7~0,] 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[~lk7~0,] [2020-12-23 17:35:43,910 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_7.c[2881,2894] [2020-12-23 17:35:43,916 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 17:35:43,932 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[~lk7~0,] 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[~lk7~0,] 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[~lk7~0,] [2020-12-23 17:35:43,965 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_7.c[2881,2894] [2020-12-23 17:35:43,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 17:35:43,989 INFO L208 MainTranslator]: Completed translation [2020-12-23 17:35:43,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:43 WrapperNode [2020-12-23 17:35:43,991 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 17:35:43,993 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 17:35:43,994 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 17:35:43,994 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 17:35:44,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:43" (1/1) ... [2020-12-23 17:35:44,018 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:43" (1/1) ... [2020-12-23 17:35:44,050 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 17:35:44,051 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 17:35:44,052 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 17:35:44,052 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 17:35:44,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:43" (1/1) ... [2020-12-23 17:35:44,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:43" (1/1) ... [2020-12-23 17:35:44,068 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:43" (1/1) ... [2020-12-23 17:35:44,069 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:43" (1/1) ... [2020-12-23 17:35:44,075 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:43" (1/1) ... [2020-12-23 17:35:44,083 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:43" (1/1) ... [2020-12-23 17:35:44,085 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:43" (1/1) ... [2020-12-23 17:35:44,089 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 17:35:44,090 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 17:35:44,091 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 17:35:44,091 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 17:35:44,092 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:43" (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 17:35:44,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 17:35:44,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 17:35:44,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 17:35:44,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 17:35:44,708 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 17:35:44,712 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2020-12-23 17:35:44,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:35:44 BoogieIcfgContainer [2020-12-23 17:35:44,716 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 17:35:44,724 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 17:35:44,724 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 17:35:44,733 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 17:35:44,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 05:35:43" (1/3) ... [2020-12-23 17:35:44,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@269011a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 05:35:44, skipping insertion in model container [2020-12-23 17:35:44,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:35:43" (2/3) ... [2020-12-23 17:35:44,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@269011a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 05:35:44, skipping insertion in model container [2020-12-23 17:35:44,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:35:44" (3/3) ... [2020-12-23 17:35:44,752 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_7.c [2020-12-23 17:35:44,780 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 17:35:44,800 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-23 17:35:44,849 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-23 17:35:44,912 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 17:35:44,913 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-23 17:35:44,913 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 17:35:44,913 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 17:35:44,913 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 17:35:44,914 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 17:35:44,916 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 17:35:44,917 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 17:35:44,946 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-12-23 17:35:44,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-23 17:35:44,963 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:44,964 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-23 17:35:44,965 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:44,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:44,978 INFO L82 PathProgramCache]: Analyzing trace with hash 28824843, now seen corresponding path program 1 times [2020-12-23 17:35:44,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:44,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724562318] [2020-12-23 17:35:44,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:45,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:45,323 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 17:35:45,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724562318] [2020-12-23 17:35:45,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:45,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 17:35:45,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514240591] [2020-12-23 17:35:45,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 17:35:45,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:45,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 17:35:45,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 17:35:45,371 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2020-12-23 17:35:45,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:45,396 INFO L93 Difference]: Finished difference Result 32 states and 52 transitions. [2020-12-23 17:35:45,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 17:35:45,398 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-12-23 17:35:45,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:45,423 INFO L225 Difference]: With dead ends: 32 [2020-12-23 17:35:45,424 INFO L226 Difference]: Without dead ends: 30 [2020-12-23 17:35:45,426 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 17:35:45,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-12-23 17:35:45,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-12-23 17:35:45,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-12-23 17:35:45,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 50 transitions. [2020-12-23 17:35:45,509 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 50 transitions. Word has length 5 [2020-12-23 17:35:45,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:45,510 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 50 transitions. [2020-12-23 17:35:45,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 17:35:45,511 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 50 transitions. [2020-12-23 17:35:45,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-23 17:35:45,511 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:45,511 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-23 17:35:45,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 17:35:45,514 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:45,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:45,518 INFO L82 PathProgramCache]: Analyzing trace with hash 889696331, now seen corresponding path program 1 times [2020-12-23 17:35:45,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:45,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059674903] [2020-12-23 17:35:45,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:45,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:45,684 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 17:35:45,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059674903] [2020-12-23 17:35:45,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:45,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 17:35:45,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434053752] [2020-12-23 17:35:45,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:45,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:45,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:45,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:45,690 INFO L87 Difference]: Start difference. First operand 30 states and 50 transitions. Second operand 3 states. [2020-12-23 17:35:45,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:45,705 INFO L93 Difference]: Finished difference Result 29 states and 49 transitions. [2020-12-23 17:35:45,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:45,706 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-23 17:35:45,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:45,707 INFO L225 Difference]: With dead ends: 29 [2020-12-23 17:35:45,707 INFO L226 Difference]: Without dead ends: 27 [2020-12-23 17:35:45,709 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 17:35:45,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-23 17:35:45,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-12-23 17:35:45,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-23 17:35:45,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 47 transitions. [2020-12-23 17:35:45,720 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 47 transitions. Word has length 6 [2020-12-23 17:35:45,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:45,721 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 47 transitions. [2020-12-23 17:35:45,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:45,721 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 47 transitions. [2020-12-23 17:35:45,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 17:35:45,723 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:45,723 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:45,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 17:35:45,724 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:45,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:45,725 INFO L82 PathProgramCache]: Analyzing trace with hash -882170869, now seen corresponding path program 1 times [2020-12-23 17:35:45,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:45,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871564914] [2020-12-23 17:35:45,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:45,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:45,830 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 17:35:45,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871564914] [2020-12-23 17:35:45,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:45,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:45,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596402192] [2020-12-23 17:35:45,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:45,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:45,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:45,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:45,841 INFO L87 Difference]: Start difference. First operand 27 states and 47 transitions. Second operand 3 states. [2020-12-23 17:35:45,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:45,892 INFO L93 Difference]: Finished difference Result 51 states and 89 transitions. [2020-12-23 17:35:45,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:45,893 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-12-23 17:35:45,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:45,894 INFO L225 Difference]: With dead ends: 51 [2020-12-23 17:35:45,895 INFO L226 Difference]: Without dead ends: 51 [2020-12-23 17:35:45,895 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 17:35:45,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-12-23 17:35:45,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 35. [2020-12-23 17:35:45,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-23 17:35:45,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 62 transitions. [2020-12-23 17:35:45,904 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 62 transitions. Word has length 14 [2020-12-23 17:35:45,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:45,904 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 62 transitions. [2020-12-23 17:35:45,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:45,905 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 62 transitions. [2020-12-23 17:35:45,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-23 17:35:45,906 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:45,906 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:45,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 17:35:45,907 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:45,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:45,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1275197879, now seen corresponding path program 1 times [2020-12-23 17:35:45,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:45,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324156999] [2020-12-23 17:35:45,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:45,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:45,954 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 17:35:45,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324156999] [2020-12-23 17:35:45,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:45,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:45,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530496260] [2020-12-23 17:35:45,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:45,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:45,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:45,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:45,958 INFO L87 Difference]: Start difference. First operand 35 states and 62 transitions. Second operand 3 states. [2020-12-23 17:35:45,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:45,984 INFO L93 Difference]: Finished difference Result 51 states and 87 transitions. [2020-12-23 17:35:45,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:45,985 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-12-23 17:35:45,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:45,987 INFO L225 Difference]: With dead ends: 51 [2020-12-23 17:35:45,987 INFO L226 Difference]: Without dead ends: 51 [2020-12-23 17:35:45,988 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 17:35:45,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-12-23 17:35:45,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2020-12-23 17:35:45,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-12-23 17:35:46,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 86 transitions. [2020-12-23 17:35:46,005 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 86 transitions. Word has length 14 [2020-12-23 17:35:46,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:46,006 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 86 transitions. [2020-12-23 17:35:46,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:46,006 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 86 transitions. [2020-12-23 17:35:46,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 17:35:46,007 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:46,007 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:46,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 17:35:46,008 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:46,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:46,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1577278843, now seen corresponding path program 1 times [2020-12-23 17:35:46,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:46,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071345964] [2020-12-23 17:35:46,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:46,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:46,056 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 17:35:46,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071345964] [2020-12-23 17:35:46,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:46,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:46,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147916237] [2020-12-23 17:35:46,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:46,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:46,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:46,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:46,060 INFO L87 Difference]: Start difference. First operand 49 states and 86 transitions. Second operand 3 states. [2020-12-23 17:35:46,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:46,082 INFO L93 Difference]: Finished difference Result 54 states and 89 transitions. [2020-12-23 17:35:46,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:46,083 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-12-23 17:35:46,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:46,084 INFO L225 Difference]: With dead ends: 54 [2020-12-23 17:35:46,084 INFO L226 Difference]: Without dead ends: 54 [2020-12-23 17:35:46,085 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 17:35:46,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-23 17:35:46,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2020-12-23 17:35:46,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-23 17:35:46,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 88 transitions. [2020-12-23 17:35:46,093 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 88 transitions. Word has length 15 [2020-12-23 17:35:46,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:46,093 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 88 transitions. [2020-12-23 17:35:46,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:46,094 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 88 transitions. [2020-12-23 17:35:46,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 17:35:46,098 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:46,098 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:46,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 17:35:46,101 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:46,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:46,102 INFO L82 PathProgramCache]: Analyzing trace with hash -876214265, now seen corresponding path program 1 times [2020-12-23 17:35:46,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:46,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697277461] [2020-12-23 17:35:46,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:46,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:46,206 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 17:35:46,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697277461] [2020-12-23 17:35:46,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:46,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:46,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979262963] [2020-12-23 17:35:46,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:46,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:46,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:46,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:46,211 INFO L87 Difference]: Start difference. First operand 52 states and 88 transitions. Second operand 3 states. [2020-12-23 17:35:46,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:46,233 INFO L93 Difference]: Finished difference Result 95 states and 162 transitions. [2020-12-23 17:35:46,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:46,234 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-12-23 17:35:46,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:46,236 INFO L225 Difference]: With dead ends: 95 [2020-12-23 17:35:46,236 INFO L226 Difference]: Without dead ends: 95 [2020-12-23 17:35:46,236 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 17:35:46,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-12-23 17:35:46,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 69. [2020-12-23 17:35:46,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-12-23 17:35:46,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 117 transitions. [2020-12-23 17:35:46,246 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 117 transitions. Word has length 15 [2020-12-23 17:35:46,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:46,247 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 117 transitions. [2020-12-23 17:35:46,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:46,247 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 117 transitions. [2020-12-23 17:35:46,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 17:35:46,249 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:46,250 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:46,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 17:35:46,250 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:46,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:46,251 INFO L82 PathProgramCache]: Analyzing trace with hash -1269241275, now seen corresponding path program 1 times [2020-12-23 17:35:46,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:46,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468057565] [2020-12-23 17:35:46,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:46,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:46,292 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 17:35:46,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468057565] [2020-12-23 17:35:46,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:46,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:46,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470211628] [2020-12-23 17:35:46,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:46,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:46,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:46,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:46,296 INFO L87 Difference]: Start difference. First operand 69 states and 117 transitions. Second operand 3 states. [2020-12-23 17:35:46,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:46,324 INFO L93 Difference]: Finished difference Result 97 states and 160 transitions. [2020-12-23 17:35:46,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:46,325 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-12-23 17:35:46,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:46,327 INFO L225 Difference]: With dead ends: 97 [2020-12-23 17:35:46,327 INFO L226 Difference]: Without dead ends: 97 [2020-12-23 17:35:46,330 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 17:35:46,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-12-23 17:35:46,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95. [2020-12-23 17:35:46,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-12-23 17:35:46,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 159 transitions. [2020-12-23 17:35:46,352 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 159 transitions. Word has length 15 [2020-12-23 17:35:46,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:46,355 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 159 transitions. [2020-12-23 17:35:46,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:46,356 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 159 transitions. [2020-12-23 17:35:46,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 17:35:46,358 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:46,358 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:46,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 17:35:46,360 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:46,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:46,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1392623778, now seen corresponding path program 1 times [2020-12-23 17:35:46,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:46,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317638064] [2020-12-23 17:35:46,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:46,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:46,461 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 17:35:46,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317638064] [2020-12-23 17:35:46,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:46,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:46,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777818639] [2020-12-23 17:35:46,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:46,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:46,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:46,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:46,465 INFO L87 Difference]: Start difference. First operand 95 states and 159 transitions. Second operand 3 states. [2020-12-23 17:35:46,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:46,508 INFO L93 Difference]: Finished difference Result 99 states and 160 transitions. [2020-12-23 17:35:46,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:46,510 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-12-23 17:35:46,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:46,511 INFO L225 Difference]: With dead ends: 99 [2020-12-23 17:35:46,512 INFO L226 Difference]: Without dead ends: 99 [2020-12-23 17:35:46,512 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 17:35:46,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-12-23 17:35:46,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 97. [2020-12-23 17:35:46,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-12-23 17:35:46,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 159 transitions. [2020-12-23 17:35:46,527 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 159 transitions. Word has length 16 [2020-12-23 17:35:46,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:46,528 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 159 transitions. [2020-12-23 17:35:46,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:46,532 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 159 transitions. [2020-12-23 17:35:46,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 17:35:46,536 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:46,536 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:46,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 17:35:46,537 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:46,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:46,537 INFO L82 PathProgramCache]: Analyzing trace with hash -691559200, now seen corresponding path program 1 times [2020-12-23 17:35:46,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:46,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341391048] [2020-12-23 17:35:46,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:46,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:46,575 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 17:35:46,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341391048] [2020-12-23 17:35:46,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:46,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:46,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435339945] [2020-12-23 17:35:46,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:46,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:46,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:46,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:46,579 INFO L87 Difference]: Start difference. First operand 97 states and 159 transitions. Second operand 3 states. [2020-12-23 17:35:46,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:46,599 INFO L93 Difference]: Finished difference Result 183 states and 292 transitions. [2020-12-23 17:35:46,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:46,601 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-12-23 17:35:46,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:46,603 INFO L225 Difference]: With dead ends: 183 [2020-12-23 17:35:46,604 INFO L226 Difference]: Without dead ends: 183 [2020-12-23 17:35:46,605 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 17:35:46,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-12-23 17:35:46,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 181. [2020-12-23 17:35:46,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-12-23 17:35:46,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 291 transitions. [2020-12-23 17:35:46,635 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 291 transitions. Word has length 16 [2020-12-23 17:35:46,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:46,639 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 291 transitions. [2020-12-23 17:35:46,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:46,640 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 291 transitions. [2020-12-23 17:35:46,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 17:35:46,641 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:46,641 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:46,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 17:35:46,645 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:46,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:46,646 INFO L82 PathProgramCache]: Analyzing trace with hash -298532190, now seen corresponding path program 1 times [2020-12-23 17:35:46,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:46,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859140779] [2020-12-23 17:35:46,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:46,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:46,682 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 17:35:46,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859140779] [2020-12-23 17:35:46,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:46,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:46,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841780101] [2020-12-23 17:35:46,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:46,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:46,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:46,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:46,685 INFO L87 Difference]: Start difference. First operand 181 states and 291 transitions. Second operand 3 states. [2020-12-23 17:35:46,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:46,697 INFO L93 Difference]: Finished difference Result 223 states and 360 transitions. [2020-12-23 17:35:46,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:46,698 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-12-23 17:35:46,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:46,700 INFO L225 Difference]: With dead ends: 223 [2020-12-23 17:35:46,700 INFO L226 Difference]: Without dead ends: 223 [2020-12-23 17:35:46,701 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 17:35:46,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-12-23 17:35:46,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 181. [2020-12-23 17:35:46,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-12-23 17:35:46,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 287 transitions. [2020-12-23 17:35:46,710 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 287 transitions. Word has length 16 [2020-12-23 17:35:46,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:46,711 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 287 transitions. [2020-12-23 17:35:46,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:46,711 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 287 transitions. [2020-12-23 17:35:46,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 17:35:46,713 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:46,713 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 17:35:46,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 17:35:46,713 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:46,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:46,714 INFO L82 PathProgramCache]: Analyzing trace with hash 36716282, now seen corresponding path program 1 times [2020-12-23 17:35:46,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:46,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896498608] [2020-12-23 17:35:46,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:46,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:46,742 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 17:35:46,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896498608] [2020-12-23 17:35:46,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:46,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:46,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805451958] [2020-12-23 17:35:46,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:46,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:46,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:46,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:46,745 INFO L87 Difference]: Start difference. First operand 181 states and 287 transitions. Second operand 3 states. [2020-12-23 17:35:46,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:46,760 INFO L93 Difference]: Finished difference Result 323 states and 512 transitions. [2020-12-23 17:35:46,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:46,761 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-12-23 17:35:46,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:46,766 INFO L225 Difference]: With dead ends: 323 [2020-12-23 17:35:46,766 INFO L226 Difference]: Without dead ends: 323 [2020-12-23 17:35:46,767 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 17:35:46,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-12-23 17:35:46,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 257. [2020-12-23 17:35:46,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-12-23 17:35:46,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 399 transitions. [2020-12-23 17:35:46,793 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 399 transitions. Word has length 17 [2020-12-23 17:35:46,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:46,794 INFO L481 AbstractCegarLoop]: Abstraction has 257 states and 399 transitions. [2020-12-23 17:35:46,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:46,794 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 399 transitions. [2020-12-23 17:35:46,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 17:35:46,796 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:46,796 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 17:35:46,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 17:35:46,797 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:46,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:46,797 INFO L82 PathProgramCache]: Analyzing trace with hash -356310728, now seen corresponding path program 1 times [2020-12-23 17:35:46,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:46,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504885351] [2020-12-23 17:35:46,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:46,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:46,821 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 17:35:46,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504885351] [2020-12-23 17:35:46,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:46,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:46,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151480950] [2020-12-23 17:35:46,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:46,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:46,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:46,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:46,824 INFO L87 Difference]: Start difference. First operand 257 states and 399 transitions. Second operand 3 states. [2020-12-23 17:35:46,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:46,841 INFO L93 Difference]: Finished difference Result 347 states and 524 transitions. [2020-12-23 17:35:46,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:46,842 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-12-23 17:35:46,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:46,844 INFO L225 Difference]: With dead ends: 347 [2020-12-23 17:35:46,844 INFO L226 Difference]: Without dead ends: 347 [2020-12-23 17:35:46,844 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 17:35:46,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2020-12-23 17:35:46,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 345. [2020-12-23 17:35:46,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2020-12-23 17:35:46,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 523 transitions. [2020-12-23 17:35:46,854 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 523 transitions. Word has length 17 [2020-12-23 17:35:46,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:46,855 INFO L481 AbstractCegarLoop]: Abstraction has 345 states and 523 transitions. [2020-12-23 17:35:46,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:46,855 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 523 transitions. [2020-12-23 17:35:46,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 17:35:46,857 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:46,857 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 17:35:46,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 17:35:46,858 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:46,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:46,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1138420085, now seen corresponding path program 1 times [2020-12-23 17:35:46,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:46,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028565887] [2020-12-23 17:35:46,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:46,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:46,882 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 17:35:46,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028565887] [2020-12-23 17:35:46,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:46,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:46,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620667336] [2020-12-23 17:35:46,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:46,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:46,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:46,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:46,885 INFO L87 Difference]: Start difference. First operand 345 states and 523 transitions. Second operand 3 states. [2020-12-23 17:35:46,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:46,905 INFO L93 Difference]: Finished difference Result 359 states and 532 transitions. [2020-12-23 17:35:46,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:46,906 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-12-23 17:35:46,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:46,911 INFO L225 Difference]: With dead ends: 359 [2020-12-23 17:35:46,911 INFO L226 Difference]: Without dead ends: 359 [2020-12-23 17:35:46,912 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 17:35:46,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2020-12-23 17:35:46,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 357. [2020-12-23 17:35:46,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2020-12-23 17:35:46,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 531 transitions. [2020-12-23 17:35:46,933 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 531 transitions. Word has length 18 [2020-12-23 17:35:46,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:46,933 INFO L481 AbstractCegarLoop]: Abstraction has 357 states and 531 transitions. [2020-12-23 17:35:46,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:46,933 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 531 transitions. [2020-12-23 17:35:46,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 17:35:46,935 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:46,936 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 17:35:46,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 17:35:46,936 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:46,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:46,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1839484663, now seen corresponding path program 1 times [2020-12-23 17:35:46,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:46,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565033730] [2020-12-23 17:35:46,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:46,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:46,971 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 17:35:46,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565033730] [2020-12-23 17:35:46,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:46,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:46,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152413310] [2020-12-23 17:35:46,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:46,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:46,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:46,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:46,976 INFO L87 Difference]: Start difference. First operand 357 states and 531 transitions. Second operand 3 states. [2020-12-23 17:35:47,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:47,010 INFO L93 Difference]: Finished difference Result 615 states and 908 transitions. [2020-12-23 17:35:47,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:47,011 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-12-23 17:35:47,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:47,018 INFO L225 Difference]: With dead ends: 615 [2020-12-23 17:35:47,019 INFO L226 Difference]: Without dead ends: 615 [2020-12-23 17:35:47,019 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 17:35:47,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2020-12-23 17:35:47,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 517. [2020-12-23 17:35:47,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 517 states. [2020-12-23 17:35:47,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 747 transitions. [2020-12-23 17:35:47,037 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 747 transitions. Word has length 18 [2020-12-23 17:35:47,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:47,037 INFO L481 AbstractCegarLoop]: Abstraction has 517 states and 747 transitions. [2020-12-23 17:35:47,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:47,037 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 747 transitions. [2020-12-23 17:35:47,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 17:35:47,039 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:47,039 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 17:35:47,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 17:35:47,040 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:47,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:47,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1446457653, now seen corresponding path program 1 times [2020-12-23 17:35:47,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:47,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100661059] [2020-12-23 17:35:47,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:47,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:47,065 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 17:35:47,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100661059] [2020-12-23 17:35:47,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:47,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:47,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539326699] [2020-12-23 17:35:47,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:47,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:47,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:47,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:47,068 INFO L87 Difference]: Start difference. First operand 517 states and 747 transitions. Second operand 3 states. [2020-12-23 17:35:47,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:47,088 INFO L93 Difference]: Finished difference Result 679 states and 948 transitions. [2020-12-23 17:35:47,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:47,089 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-12-23 17:35:47,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:47,093 INFO L225 Difference]: With dead ends: 679 [2020-12-23 17:35:47,094 INFO L226 Difference]: Without dead ends: 679 [2020-12-23 17:35:47,094 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 17:35:47,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2020-12-23 17:35:47,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 677. [2020-12-23 17:35:47,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 677 states. [2020-12-23 17:35:47,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 947 transitions. [2020-12-23 17:35:47,116 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 947 transitions. Word has length 18 [2020-12-23 17:35:47,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:47,117 INFO L481 AbstractCegarLoop]: Abstraction has 677 states and 947 transitions. [2020-12-23 17:35:47,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:47,117 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 947 transitions. [2020-12-23 17:35:47,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-23 17:35:47,119 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:47,119 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:47,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 17:35:47,120 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:47,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:47,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1189665389, now seen corresponding path program 1 times [2020-12-23 17:35:47,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:47,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252381744] [2020-12-23 17:35:47,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:47,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:47,148 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 17:35:47,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252381744] [2020-12-23 17:35:47,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:47,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:47,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520535402] [2020-12-23 17:35:47,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:47,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:47,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:47,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:47,153 INFO L87 Difference]: Start difference. First operand 677 states and 947 transitions. Second operand 3 states. [2020-12-23 17:35:47,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:47,187 INFO L93 Difference]: Finished difference Result 695 states and 948 transitions. [2020-12-23 17:35:47,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:47,188 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-23 17:35:47,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:47,194 INFO L225 Difference]: With dead ends: 695 [2020-12-23 17:35:47,194 INFO L226 Difference]: Without dead ends: 695 [2020-12-23 17:35:47,195 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 17:35:47,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-12-23 17:35:47,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 693. [2020-12-23 17:35:47,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2020-12-23 17:35:47,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 947 transitions. [2020-12-23 17:35:47,220 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 947 transitions. Word has length 19 [2020-12-23 17:35:47,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:47,221 INFO L481 AbstractCegarLoop]: Abstraction has 693 states and 947 transitions. [2020-12-23 17:35:47,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:47,221 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 947 transitions. [2020-12-23 17:35:47,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-23 17:35:47,227 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:47,227 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:47,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 17:35:47,228 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:47,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:47,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1890729967, now seen corresponding path program 1 times [2020-12-23 17:35:47,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:47,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091814221] [2020-12-23 17:35:47,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:47,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:47,295 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 17:35:47,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091814221] [2020-12-23 17:35:47,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:47,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:47,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137746705] [2020-12-23 17:35:47,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:47,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:47,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:47,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:47,303 INFO L87 Difference]: Start difference. First operand 693 states and 947 transitions. Second operand 3 states. [2020-12-23 17:35:47,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:47,330 INFO L93 Difference]: Finished difference Result 1159 states and 1556 transitions. [2020-12-23 17:35:47,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:47,333 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-23 17:35:47,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:47,340 INFO L225 Difference]: With dead ends: 1159 [2020-12-23 17:35:47,340 INFO L226 Difference]: Without dead ends: 1159 [2020-12-23 17:35:47,341 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 17:35:47,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2020-12-23 17:35:47,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1029. [2020-12-23 17:35:47,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1029 states. [2020-12-23 17:35:47,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 1363 transitions. [2020-12-23 17:35:47,374 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 1363 transitions. Word has length 19 [2020-12-23 17:35:47,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:47,374 INFO L481 AbstractCegarLoop]: Abstraction has 1029 states and 1363 transitions. [2020-12-23 17:35:47,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:47,375 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 1363 transitions. [2020-12-23 17:35:47,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-23 17:35:47,377 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:47,378 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:47,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-23 17:35:47,379 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:47,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:47,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1497702957, now seen corresponding path program 1 times [2020-12-23 17:35:47,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:47,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747527803] [2020-12-23 17:35:47,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:47,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:47,421 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 17:35:47,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747527803] [2020-12-23 17:35:47,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:47,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:47,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156909927] [2020-12-23 17:35:47,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:47,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:47,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:47,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:47,432 INFO L87 Difference]: Start difference. First operand 1029 states and 1363 transitions. Second operand 3 states. [2020-12-23 17:35:47,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:47,464 INFO L93 Difference]: Finished difference Result 1319 states and 1668 transitions. [2020-12-23 17:35:47,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:47,465 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-23 17:35:47,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:47,473 INFO L225 Difference]: With dead ends: 1319 [2020-12-23 17:35:47,474 INFO L226 Difference]: Without dead ends: 1319 [2020-12-23 17:35:47,476 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 17:35:47,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states. [2020-12-23 17:35:47,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 1317. [2020-12-23 17:35:47,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1317 states. [2020-12-23 17:35:47,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 1667 transitions. [2020-12-23 17:35:47,536 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 1667 transitions. Word has length 19 [2020-12-23 17:35:47,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:47,536 INFO L481 AbstractCegarLoop]: Abstraction has 1317 states and 1667 transitions. [2020-12-23 17:35:47,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:47,537 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 1667 transitions. [2020-12-23 17:35:47,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 17:35:47,540 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:47,540 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:47,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-23 17:35:47,541 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:47,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:47,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1516697142, now seen corresponding path program 1 times [2020-12-23 17:35:47,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:47,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687814421] [2020-12-23 17:35:47,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:47,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:47,583 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 17:35:47,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687814421] [2020-12-23 17:35:47,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:47,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:47,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114506291] [2020-12-23 17:35:47,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:47,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:47,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:47,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:47,591 INFO L87 Difference]: Start difference. First operand 1317 states and 1667 transitions. Second operand 3 states. [2020-12-23 17:35:47,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:47,612 INFO L93 Difference]: Finished difference Result 1351 states and 1668 transitions. [2020-12-23 17:35:47,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:47,613 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-12-23 17:35:47,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:47,623 INFO L225 Difference]: With dead ends: 1351 [2020-12-23 17:35:47,623 INFO L226 Difference]: Without dead ends: 1351 [2020-12-23 17:35:47,624 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 17:35:47,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2020-12-23 17:35:47,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1349. [2020-12-23 17:35:47,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1349 states. [2020-12-23 17:35:47,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1349 states to 1349 states and 1667 transitions. [2020-12-23 17:35:47,671 INFO L78 Accepts]: Start accepts. Automaton has 1349 states and 1667 transitions. Word has length 20 [2020-12-23 17:35:47,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:47,673 INFO L481 AbstractCegarLoop]: Abstraction has 1349 states and 1667 transitions. [2020-12-23 17:35:47,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:47,674 INFO L276 IsEmpty]: Start isEmpty. Operand 1349 states and 1667 transitions. [2020-12-23 17:35:47,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 17:35:47,677 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:47,677 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:47,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-23 17:35:47,679 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:47,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:47,680 INFO L82 PathProgramCache]: Analyzing trace with hash -815632564, now seen corresponding path program 1 times [2020-12-23 17:35:47,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:47,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396512651] [2020-12-23 17:35:47,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:47,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:47,716 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 17:35:47,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396512651] [2020-12-23 17:35:47,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:47,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:47,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147572030] [2020-12-23 17:35:47,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:47,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:47,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:47,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:47,719 INFO L87 Difference]: Start difference. First operand 1349 states and 1667 transitions. Second operand 3 states. [2020-12-23 17:35:47,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:47,758 INFO L93 Difference]: Finished difference Result 2181 states and 2595 transitions. [2020-12-23 17:35:47,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:47,759 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-12-23 17:35:47,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:47,770 INFO L225 Difference]: With dead ends: 2181 [2020-12-23 17:35:47,771 INFO L226 Difference]: Without dead ends: 2181 [2020-12-23 17:35:47,771 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 17:35:47,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2181 states. [2020-12-23 17:35:47,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2181 to 2053. [2020-12-23 17:35:47,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2053 states. [2020-12-23 17:35:47,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2053 states to 2053 states and 2467 transitions. [2020-12-23 17:35:47,847 INFO L78 Accepts]: Start accepts. Automaton has 2053 states and 2467 transitions. Word has length 20 [2020-12-23 17:35:47,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:47,847 INFO L481 AbstractCegarLoop]: Abstraction has 2053 states and 2467 transitions. [2020-12-23 17:35:47,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:47,847 INFO L276 IsEmpty]: Start isEmpty. Operand 2053 states and 2467 transitions. [2020-12-23 17:35:47,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 17:35:47,852 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 17:35:47,852 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 17:35:47,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-23 17:35:47,853 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-23 17:35:47,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 17:35:47,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1208659574, now seen corresponding path program 1 times [2020-12-23 17:35:47,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 17:35:47,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599488881] [2020-12-23 17:35:47,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 17:35:47,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 17:35:47,894 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 17:35:47,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599488881] [2020-12-23 17:35:47,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 17:35:47,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 17:35:47,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878783889] [2020-12-23 17:35:47,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 17:35:47,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 17:35:47,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 17:35:47,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 17:35:47,897 INFO L87 Difference]: Start difference. First operand 2053 states and 2467 transitions. Second operand 3 states. [2020-12-23 17:35:47,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 17:35:47,953 INFO L93 Difference]: Finished difference Result 2563 states and 2882 transitions. [2020-12-23 17:35:47,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 17:35:47,954 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-12-23 17:35:47,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 17:35:47,954 INFO L225 Difference]: With dead ends: 2563 [2020-12-23 17:35:47,954 INFO L226 Difference]: Without dead ends: 0 [2020-12-23 17:35:47,955 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 17:35:47,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-23 17:35:47,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-23 17:35:47,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-23 17:35:47,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-23 17:35:47,955 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-12-23 17:35:47,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 17:35:47,956 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-23 17:35:47,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 17:35:47,956 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-23 17:35:47,956 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-23 17:35:47,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-23 17:35:47,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 05:35:47 BoogieIcfgContainer [2020-12-23 17:35:47,964 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 17:35:47,965 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 17:35:47,965 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 17:35:47,965 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 17:35:47,966 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:35:44" (3/4) ... [2020-12-23 17:35:47,972 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-23 17:35:47,991 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-23 17:35:47,991 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-23 17:35:47,991 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-23 17:35:47,992 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-23 17:35:48,062 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/locks/test_locks_7.c-witness.graphml [2020-12-23 17:35:48,063 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 17:35:48,071 INFO L168 Benchmark]: Toolchain (without parser) took 4445.20 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 131.6 MB in the beginning and 106.5 MB in the end (delta: 25.1 MB). Peak memory consumption was 57.2 MB. Max. memory is 8.0 GB. [2020-12-23 17:35:48,072 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 156.2 MB. Free memory is still 128.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 17:35:48,073 INFO L168 Benchmark]: CACSL2BoogieTranslator took 363.56 ms. Allocated memory is still 156.2 MB. Free memory was 131.4 MB in the beginning and 121.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-23 17:35:48,073 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.23 ms. Allocated memory is still 156.2 MB. Free memory was 121.2 MB in the beginning and 119.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 17:35:48,074 INFO L168 Benchmark]: Boogie Preprocessor took 37.92 ms. Allocated memory is still 156.2 MB. Free memory was 119.7 MB in the beginning and 118.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 17:35:48,078 INFO L168 Benchmark]: RCFGBuilder took 625.71 ms. Allocated memory is still 156.2 MB. Free memory was 118.6 MB in the beginning and 133.3 MB in the end (delta: -14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-12-23 17:35:48,080 INFO L168 Benchmark]: TraceAbstraction took 3240.76 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 132.7 MB in the beginning and 109.6 MB in the end (delta: 23.1 MB). Peak memory consumption was 55.1 MB. Max. memory is 8.0 GB. [2020-12-23 17:35:48,081 INFO L168 Benchmark]: Witness Printer took 97.80 ms. Allocated memory is still 187.7 MB. Free memory was 109.6 MB in the beginning and 106.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-23 17:35:48,084 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 156.2 MB. Free memory is still 128.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 363.56 ms. Allocated memory is still 156.2 MB. Free memory was 131.4 MB in the beginning and 121.4 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 57.23 ms. Allocated memory is still 156.2 MB. Free memory was 121.2 MB in the beginning and 119.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 37.92 ms. Allocated memory is still 156.2 MB. Free memory was 119.7 MB in the beginning and 118.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 625.71 ms. Allocated memory is still 156.2 MB. Free memory was 118.6 MB in the beginning and 133.3 MB in the end (delta: -14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3240.76 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 132.7 MB in the beginning and 109.6 MB in the end (delta: 23.1 MB). Peak memory consumption was 55.1 MB. Max. memory is 8.0 GB. * Witness Printer took 97.80 ms. Allocated memory is still 187.7 MB. Free memory was 109.6 MB in the beginning and 106.5 MB in the end (delta: 3.1 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: 121]: 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, 32 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.0s, OverallIterations: 21, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1221 SDtfs, 583 SDslu, 725 SDs, 0 SdLazy, 102 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2053occurred in iteration=20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 21 MinimizatonAttempts, 528 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 337 NumberOfCodeBlocks, 337 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 316 ConstructedInterpolants, 0 QuantifiedInterpolants, 10219 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 21 InterpolantComputations, 21 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...