/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/verifythis/elimination_max.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-07 05:08:48,846 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-07 05:08:48,849 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-07 05:08:48,916 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-07 05:08:48,916 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-07 05:08:48,918 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-07 05:08:48,920 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-07 05:08:48,923 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-07 05:08:48,926 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-07 05:08:48,928 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-07 05:08:48,929 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-07 05:08:48,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-07 05:08:48,932 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-07 05:08:48,934 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-07 05:08:48,935 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-07 05:08:48,937 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-07 05:08:48,939 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-07 05:08:48,941 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-07 05:08:48,944 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-07 05:08:48,947 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-07 05:08:48,949 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-07 05:08:48,951 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-07 05:08:48,953 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-07 05:08:48,954 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-07 05:08:48,987 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-07 05:08:49,010 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-07 05:08:49,011 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-07 05:08:49,012 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-07 05:08:49,013 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-07 05:08:49,015 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-07 05:08:49,015 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-07 05:08:49,016 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-07 05:08:49,017 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-07 05:08:49,017 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-07 05:08:49,018 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-07 05:08:49,019 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-07 05:08:49,020 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2021-01-07 05:08:49,058 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-07 05:08:49,058 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-07 05:08:49,061 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-07 05:08:49,061 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-07 05:08:49,062 INFO L138 SettingsManager]: * Use SBE=true [2021-01-07 05:08:49,064 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-07 05:08:49,064 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-01-07 05:08:49,064 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-07 05:08:49,065 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-07 05:08:49,065 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-01-07 05:08:49,065 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-01-07 05:08:49,065 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-01-07 05:08:49,065 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-07 05:08:49,066 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-01-07 05:08:49,066 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-07 05:08:49,066 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-07 05:08:49,066 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-07 05:08:49,067 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-07 05:08:49,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-07 05:08:49,069 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-07 05:08:49,069 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-07 05:08:49,069 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-07 05:08:49,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-07 05:08:49,070 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-07 05:08:49,070 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-07 05:08:49,567 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-07 05:08:49,606 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-07 05:08:49,610 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-07 05:08:49,611 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-07 05:08:49,612 INFO L275 PluginConnector]: CDTParser initialized [2021-01-07 05:08:49,614 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/verifythis/elimination_max.c [2021-01-07 05:08:49,703 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/7cca2b018/bd07990424e446a18a07de461abe054a/FLAGf32eda766 [2021-01-07 05:08:50,452 INFO L306 CDTParser]: Found 1 translation units. [2021-01-07 05:08:50,453 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/verifythis/elimination_max.c [2021-01-07 05:08:50,465 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/7cca2b018/bd07990424e446a18a07de461abe054a/FLAGf32eda766 [2021-01-07 05:08:50,768 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/7cca2b018/bd07990424e446a18a07de461abe054a [2021-01-07 05:08:50,772 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-07 05:08:50,777 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-07 05:08:50,780 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-07 05:08:50,780 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-07 05:08:50,785 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-07 05:08:50,787 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:08:50" (1/1) ... [2021-01-07 05:08:50,790 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fe248e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:50, skipping insertion in model container [2021-01-07 05:08:50,791 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.01 05:08:50" (1/1) ... [2021-01-07 05:08:50,802 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-07 05:08:50,825 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-07 05:08:51,030 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/verifythis/elimination_max.c[485,498] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] [2021-01-07 05:08:51,054 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:08:51,069 INFO L203 MainTranslator]: Completed pre-run [2021-01-07 05:08:51,084 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/verifythis/elimination_max.c[485,498] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] [2021-01-07 05:08:51,093 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-07 05:08:51,114 INFO L208 MainTranslator]: Completed translation [2021-01-07 05:08:51,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:51 WrapperNode [2021-01-07 05:08:51,115 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-07 05:08:51,117 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-07 05:08:51,117 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-07 05:08:51,117 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-07 05:08:51,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:51" (1/1) ... [2021-01-07 05:08:51,136 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:51" (1/1) ... [2021-01-07 05:08:51,214 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-07 05:08:51,215 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-07 05:08:51,215 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-07 05:08:51,215 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-07 05:08:51,225 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:51" (1/1) ... [2021-01-07 05:08:51,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:51" (1/1) ... [2021-01-07 05:08:51,229 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:51" (1/1) ... [2021-01-07 05:08:51,229 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:51" (1/1) ... [2021-01-07 05:08:51,238 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:51" (1/1) ... [2021-01-07 05:08:51,249 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:51" (1/1) ... [2021-01-07 05:08:51,251 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:51" (1/1) ... [2021-01-07 05:08:51,254 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-07 05:08:51,255 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-07 05:08:51,255 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-07 05:08:51,256 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-07 05:08:51,257 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:51" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-07 05:08:51,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-07 05:08:51,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-07 05:08:51,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-01-07 05:08:51,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-07 05:08:51,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-07 05:08:51,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-07 05:08:51,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-07 05:08:52,027 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-07 05:08:52,027 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-01-07 05:08:52,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:08:52 BoogieIcfgContainer [2021-01-07 05:08:52,030 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-07 05:08:52,032 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-07 05:08:52,033 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-07 05:08:52,037 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-07 05:08:52,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.01 05:08:50" (1/3) ... [2021-01-07 05:08:52,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5904fd55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:08:52, skipping insertion in model container [2021-01-07 05:08:52,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.01 05:08:51" (2/3) ... [2021-01-07 05:08:52,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5904fd55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.01 05:08:52, skipping insertion in model container [2021-01-07 05:08:52,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:08:52" (3/3) ... [2021-01-07 05:08:52,041 INFO L111 eAbstractionObserver]: Analyzing ICFG elimination_max.c [2021-01-07 05:08:52,050 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-07 05:08:52,056 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 18 error locations. [2021-01-07 05:08:52,081 INFO L253 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2021-01-07 05:08:52,108 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-07 05:08:52,109 INFO L378 AbstractCegarLoop]: Hoare is false [2021-01-07 05:08:52,109 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-07 05:08:52,109 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-07 05:08:52,109 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-07 05:08:52,109 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-07 05:08:52,110 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-07 05:08:52,110 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-07 05:08:52,130 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2021-01-07 05:08:52,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-07 05:08:52,139 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:52,140 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:52,141 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE]=== [2021-01-07 05:08:52,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:52,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1804965574, now seen corresponding path program 1 times [2021-01-07 05:08:52,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:52,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900168357] [2021-01-07 05:08:52,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:52,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:52,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:52,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900168357] [2021-01-07 05:08:52,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:08:52,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-07 05:08:52,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732718459] [2021-01-07 05:08:52,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-07 05:08:52,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:52,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-07 05:08:52,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-07 05:08:52,380 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 2 states. [2021-01-07 05:08:52,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:52,401 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions. [2021-01-07 05:08:52,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-07 05:08:52,403 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2021-01-07 05:08:52,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:52,413 INFO L225 Difference]: With dead ends: 49 [2021-01-07 05:08:52,414 INFO L226 Difference]: Without dead ends: 47 [2021-01-07 05:08:52,416 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 [2021-01-07 05:08:52,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-01-07 05:08:52,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-01-07 05:08:52,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-01-07 05:08:52,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2021-01-07 05:08:52,461 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 7 [2021-01-07 05:08:52,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:52,461 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2021-01-07 05:08:52,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-07 05:08:52,462 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2021-01-07 05:08:52,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-07 05:08:52,462 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:52,462 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:52,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-07 05:08:52,463 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE]=== [2021-01-07 05:08:52,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:52,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1806812616, now seen corresponding path program 1 times [2021-01-07 05:08:52,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:52,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249231595] [2021-01-07 05:08:52,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:52,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:52,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:52,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249231595] [2021-01-07 05:08:52,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:08:52,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:08:52,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542202179] [2021-01-07 05:08:52,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:08:52,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:52,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:08:52,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:08:52,589 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 4 states. [2021-01-07 05:08:52,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:52,698 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2021-01-07 05:08:52,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:08:52,700 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-01-07 05:08:52,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:52,702 INFO L225 Difference]: With dead ends: 40 [2021-01-07 05:08:52,702 INFO L226 Difference]: Without dead ends: 40 [2021-01-07 05:08:52,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:08:52,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-01-07 05:08:52,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-01-07 05:08:52,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2021-01-07 05:08:52,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2021-01-07 05:08:52,720 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 7 [2021-01-07 05:08:52,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:52,721 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2021-01-07 05:08:52,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:08:52,722 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2021-01-07 05:08:52,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-01-07 05:08:52,723 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:52,723 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:52,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-07 05:08:52,725 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE]=== [2021-01-07 05:08:52,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:52,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1806812617, now seen corresponding path program 1 times [2021-01-07 05:08:52,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:52,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496910129] [2021-01-07 05:08:52,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:52,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:52,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:52,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496910129] [2021-01-07 05:08:52,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:08:52,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 05:08:52,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114904531] [2021-01-07 05:08:52,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-07 05:08:52,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:52,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-07 05:08:52,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:08:52,921 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 5 states. [2021-01-07 05:08:53,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:53,195 INFO L93 Difference]: Finished difference Result 100 states and 105 transitions. [2021-01-07 05:08:53,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:08:53,195 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2021-01-07 05:08:53,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:53,197 INFO L225 Difference]: With dead ends: 100 [2021-01-07 05:08:53,198 INFO L226 Difference]: Without dead ends: 100 [2021-01-07 05:08:53,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:08:53,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-01-07 05:08:53,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 74. [2021-01-07 05:08:53,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-01-07 05:08:53,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 92 transitions. [2021-01-07 05:08:53,209 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 92 transitions. Word has length 7 [2021-01-07 05:08:53,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:53,209 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 92 transitions. [2021-01-07 05:08:53,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-07 05:08:53,209 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 92 transitions. [2021-01-07 05:08:53,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-01-07 05:08:53,210 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:53,210 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:53,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-07 05:08:53,211 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE]=== [2021-01-07 05:08:53,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:53,212 INFO L82 PathProgramCache]: Analyzing trace with hash 176616243, now seen corresponding path program 1 times [2021-01-07 05:08:53,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:53,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15565708] [2021-01-07 05:08:53,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:53,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:53,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:53,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15565708] [2021-01-07 05:08:53,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:08:53,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-07 05:08:53,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158222632] [2021-01-07 05:08:53,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:08:53,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:53,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:08:53,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:08:53,373 INFO L87 Difference]: Start difference. First operand 74 states and 92 transitions. Second operand 6 states. [2021-01-07 05:08:53,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:53,652 INFO L93 Difference]: Finished difference Result 120 states and 132 transitions. [2021-01-07 05:08:53,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:08:53,653 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2021-01-07 05:08:53,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:53,661 INFO L225 Difference]: With dead ends: 120 [2021-01-07 05:08:53,661 INFO L226 Difference]: Without dead ends: 120 [2021-01-07 05:08:53,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:08:53,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-01-07 05:08:53,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 78. [2021-01-07 05:08:53,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2021-01-07 05:08:53,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 98 transitions. [2021-01-07 05:08:53,690 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 98 transitions. Word has length 8 [2021-01-07 05:08:53,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:53,691 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 98 transitions. [2021-01-07 05:08:53,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:08:53,691 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 98 transitions. [2021-01-07 05:08:53,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-07 05:08:53,692 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:53,692 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:53,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-07 05:08:53,692 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE]=== [2021-01-07 05:08:53,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:53,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1180091580, now seen corresponding path program 1 times [2021-01-07 05:08:53,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:53,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010966734] [2021-01-07 05:08:53,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:53,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:53,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:53,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010966734] [2021-01-07 05:08:53,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:08:53,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-01-07 05:08:53,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323021243] [2021-01-07 05:08:53,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:08:53,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:53,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:08:53,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-07 05:08:53,811 INFO L87 Difference]: Start difference. First operand 78 states and 98 transitions. Second operand 6 states. [2021-01-07 05:08:53,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:53,988 INFO L93 Difference]: Finished difference Result 82 states and 100 transitions. [2021-01-07 05:08:53,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:08:53,989 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2021-01-07 05:08:53,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:53,989 INFO L225 Difference]: With dead ends: 82 [2021-01-07 05:08:53,990 INFO L226 Difference]: Without dead ends: 82 [2021-01-07 05:08:53,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-01-07 05:08:53,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-01-07 05:08:53,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 65. [2021-01-07 05:08:53,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2021-01-07 05:08:53,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 77 transitions. [2021-01-07 05:08:53,995 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 77 transitions. Word has length 9 [2021-01-07 05:08:53,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:53,996 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 77 transitions. [2021-01-07 05:08:53,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:08:53,996 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 77 transitions. [2021-01-07 05:08:53,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-07 05:08:53,996 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:53,997 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:53,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-07 05:08:53,997 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE]=== [2021-01-07 05:08:53,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:53,998 INFO L82 PathProgramCache]: Analyzing trace with hash -2071866698, now seen corresponding path program 1 times [2021-01-07 05:08:53,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:53,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018609869] [2021-01-07 05:08:53,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:54,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:54,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:54,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018609869] [2021-01-07 05:08:54,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:08:54,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 05:08:54,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515747350] [2021-01-07 05:08:54,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-07 05:08:54,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:54,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-07 05:08:54,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:08:54,055 INFO L87 Difference]: Start difference. First operand 65 states and 77 transitions. Second operand 5 states. [2021-01-07 05:08:54,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:54,139 INFO L93 Difference]: Finished difference Result 93 states and 105 transitions. [2021-01-07 05:08:54,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-07 05:08:54,139 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2021-01-07 05:08:54,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:54,140 INFO L225 Difference]: With dead ends: 93 [2021-01-07 05:08:54,140 INFO L226 Difference]: Without dead ends: 93 [2021-01-07 05:08:54,141 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:08:54,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-01-07 05:08:54,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 64. [2021-01-07 05:08:54,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-01-07 05:08:54,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2021-01-07 05:08:54,146 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 75 transitions. Word has length 10 [2021-01-07 05:08:54,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:54,146 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 75 transitions. [2021-01-07 05:08:54,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-07 05:08:54,147 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2021-01-07 05:08:54,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-07 05:08:54,147 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:54,147 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:54,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-07 05:08:54,148 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE]=== [2021-01-07 05:08:54,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:54,149 INFO L82 PathProgramCache]: Analyzing trace with hash 239526543, now seen corresponding path program 1 times [2021-01-07 05:08:54,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:54,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037961211] [2021-01-07 05:08:54,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:54,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:54,237 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:54,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037961211] [2021-01-07 05:08:54,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318776820] [2021-01-07 05:08:54,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:54,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:54,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-07 05:08:54,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:54,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:54,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-07 05:08:54,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2021-01-07 05:08:54,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064318698] [2021-01-07 05:08:54,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-07 05:08:54,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:54,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-07 05:08:54,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-01-07 05:08:54,466 INFO L87 Difference]: Start difference. First operand 64 states and 75 transitions. Second operand 7 states. [2021-01-07 05:08:54,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:54,695 INFO L93 Difference]: Finished difference Result 132 states and 140 transitions. [2021-01-07 05:08:54,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-07 05:08:54,696 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2021-01-07 05:08:54,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:54,697 INFO L225 Difference]: With dead ends: 132 [2021-01-07 05:08:54,697 INFO L226 Difference]: Without dead ends: 132 [2021-01-07 05:08:54,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2021-01-07 05:08:54,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-01-07 05:08:54,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 64. [2021-01-07 05:08:54,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-01-07 05:08:54,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2021-01-07 05:08:54,703 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 75 transitions. Word has length 11 [2021-01-07 05:08:54,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:54,704 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 75 transitions. [2021-01-07 05:08:54,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-07 05:08:54,704 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2021-01-07 05:08:54,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-07 05:08:54,705 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:54,705 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:54,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-01-07 05:08:54,921 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE]=== [2021-01-07 05:08:54,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:54,923 INFO L82 PathProgramCache]: Analyzing trace with hash -5800130, now seen corresponding path program 1 times [2021-01-07 05:08:54,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:54,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266375338] [2021-01-07 05:08:54,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:54,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:55,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:55,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266375338] [2021-01-07 05:08:55,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:08:55,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-07 05:08:55,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298545757] [2021-01-07 05:08:55,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-07 05:08:55,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:55,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-07 05:08:55,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:08:55,111 INFO L87 Difference]: Start difference. First operand 64 states and 75 transitions. Second operand 8 states. [2021-01-07 05:08:55,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:55,262 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2021-01-07 05:08:55,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-07 05:08:55,263 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2021-01-07 05:08:55,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:55,264 INFO L225 Difference]: With dead ends: 62 [2021-01-07 05:08:55,264 INFO L226 Difference]: Without dead ends: 62 [2021-01-07 05:08:55,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-01-07 05:08:55,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-01-07 05:08:55,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-01-07 05:08:55,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2021-01-07 05:08:55,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 72 transitions. [2021-01-07 05:08:55,271 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 72 transitions. Word has length 13 [2021-01-07 05:08:55,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:55,272 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 72 transitions. [2021-01-07 05:08:55,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-07 05:08:55,273 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 72 transitions. [2021-01-07 05:08:55,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-07 05:08:55,275 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:55,275 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:55,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-01-07 05:08:55,276 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE]=== [2021-01-07 05:08:55,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:55,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1793144880, now seen corresponding path program 1 times [2021-01-07 05:08:55,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:55,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62275250] [2021-01-07 05:08:55,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:55,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:55,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:55,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62275250] [2021-01-07 05:08:55,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983692890] [2021-01-07 05:08:55,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:55,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:55,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-07 05:08:55,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:55,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:55,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-07 05:08:55,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2021-01-07 05:08:55,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58369599] [2021-01-07 05:08:55,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-07 05:08:55,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:55,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-07 05:08:55,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-01-07 05:08:55,635 INFO L87 Difference]: Start difference. First operand 62 states and 72 transitions. Second operand 7 states. [2021-01-07 05:08:56,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:56,083 INFO L93 Difference]: Finished difference Result 125 states and 133 transitions. [2021-01-07 05:08:56,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-07 05:08:56,084 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2021-01-07 05:08:56,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:56,084 INFO L225 Difference]: With dead ends: 125 [2021-01-07 05:08:56,085 INFO L226 Difference]: Without dead ends: 125 [2021-01-07 05:08:56,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2021-01-07 05:08:56,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-01-07 05:08:56,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 43. [2021-01-07 05:08:56,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2021-01-07 05:08:56,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2021-01-07 05:08:56,091 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 14 [2021-01-07 05:08:56,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:56,092 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2021-01-07 05:08:56,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-07 05:08:56,092 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2021-01-07 05:08:56,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-07 05:08:56,093 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:56,093 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:56,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:56,295 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE]=== [2021-01-07 05:08:56,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:56,296 INFO L82 PathProgramCache]: Analyzing trace with hash -2035136795, now seen corresponding path program 1 times [2021-01-07 05:08:56,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:56,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533808011] [2021-01-07 05:08:56,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:56,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:56,426 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:56,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533808011] [2021-01-07 05:08:56,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724933374] [2021-01-07 05:08:56,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:56,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:56,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 8 conjunts are in the unsatisfiable core [2021-01-07 05:08:56,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:56,659 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:56,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:56,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14 [2021-01-07 05:08:56,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205532711] [2021-01-07 05:08:56,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-07 05:08:56,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:56,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-07 05:08:56,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-01-07 05:08:56,662 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 14 states. [2021-01-07 05:08:57,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:57,124 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2021-01-07 05:08:57,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-07 05:08:57,125 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 16 [2021-01-07 05:08:57,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:57,126 INFO L225 Difference]: With dead ends: 63 [2021-01-07 05:08:57,126 INFO L226 Difference]: Without dead ends: 63 [2021-01-07 05:08:57,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2021-01-07 05:08:57,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-01-07 05:08:57,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 34. [2021-01-07 05:08:57,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-01-07 05:08:57,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2021-01-07 05:08:57,129 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 16 [2021-01-07 05:08:57,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:57,130 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2021-01-07 05:08:57,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-01-07 05:08:57,130 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2021-01-07 05:08:57,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-01-07 05:08:57,131 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:57,131 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:57,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-01-07 05:08:57,345 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE]=== [2021-01-07 05:08:57,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:57,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1979489852, now seen corresponding path program 1 times [2021-01-07 05:08:57,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:57,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293338339] [2021-01-07 05:08:57,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:57,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:57,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:57,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293338339] [2021-01-07 05:08:57,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:08:57,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-07 05:08:57,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325189914] [2021-01-07 05:08:57,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-07 05:08:57,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:57,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-07 05:08:57,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-01-07 05:08:57,480 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 8 states. [2021-01-07 05:08:57,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:57,622 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2021-01-07 05:08:57,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-07 05:08:57,623 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2021-01-07 05:08:57,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:57,623 INFO L225 Difference]: With dead ends: 32 [2021-01-07 05:08:57,624 INFO L226 Difference]: Without dead ends: 32 [2021-01-07 05:08:57,624 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-01-07 05:08:57,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-01-07 05:08:57,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-01-07 05:08:57,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-01-07 05:08:57,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2021-01-07 05:08:57,626 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 19 [2021-01-07 05:08:57,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:57,627 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2021-01-07 05:08:57,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-07 05:08:57,627 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2021-01-07 05:08:57,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-01-07 05:08:57,628 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:57,628 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:57,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-01-07 05:08:57,628 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE]=== [2021-01-07 05:08:57,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:57,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1077280974, now seen corresponding path program 1 times [2021-01-07 05:08:57,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:57,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935958009] [2021-01-07 05:08:57,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:57,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:57,701 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:57,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935958009] [2021-01-07 05:08:57,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195900895] [2021-01-07 05:08:57,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:57,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:57,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2021-01-07 05:08:57,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:57,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:57,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-07 05:08:57,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2021-01-07 05:08:57,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449155899] [2021-01-07 05:08:57,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-07 05:08:57,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:57,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-07 05:08:57,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-01-07 05:08:57,887 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand 6 states. [2021-01-07 05:08:57,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:57,995 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions. [2021-01-07 05:08:57,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:08:57,996 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2021-01-07 05:08:57,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:57,996 INFO L225 Difference]: With dead ends: 57 [2021-01-07 05:08:57,997 INFO L226 Difference]: Without dead ends: 57 [2021-01-07 05:08:57,998 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-01-07 05:08:57,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-01-07 05:08:58,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 48. [2021-01-07 05:08:58,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2021-01-07 05:08:58,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2021-01-07 05:08:58,018 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 22 [2021-01-07 05:08:58,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:58,019 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2021-01-07 05:08:58,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-07 05:08:58,019 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2021-01-07 05:08:58,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-01-07 05:08:58,020 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:58,022 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, 1, 1, 1] [2021-01-07 05:08:58,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:58,236 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE]=== [2021-01-07 05:08:58,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:58,237 INFO L82 PathProgramCache]: Analyzing trace with hash 964026962, now seen corresponding path program 1 times [2021-01-07 05:08:58,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:58,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731000639] [2021-01-07 05:08:58,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:58,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:58,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:08:58,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731000639] [2021-01-07 05:08:58,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:08:58,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-07 05:08:58,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955513278] [2021-01-07 05:08:58,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-07 05:08:58,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:58,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-07 05:08:58,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-07 05:08:58,288 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand 4 states. [2021-01-07 05:08:58,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:58,345 INFO L93 Difference]: Finished difference Result 47 states and 49 transitions. [2021-01-07 05:08:58,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-07 05:08:58,345 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2021-01-07 05:08:58,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:58,349 INFO L225 Difference]: With dead ends: 47 [2021-01-07 05:08:58,349 INFO L226 Difference]: Without dead ends: 47 [2021-01-07 05:08:58,350 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:08:58,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-01-07 05:08:58,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-01-07 05:08:58,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-01-07 05:08:58,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2021-01-07 05:08:58,352 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 23 [2021-01-07 05:08:58,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:58,352 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2021-01-07 05:08:58,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-07 05:08:58,353 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2021-01-07 05:08:58,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-01-07 05:08:58,353 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:58,354 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, 1, 1, 1, 1, 1] [2021-01-07 05:08:58,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-01-07 05:08:58,354 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE]=== [2021-01-07 05:08:58,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:58,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1283021515, now seen corresponding path program 1 times [2021-01-07 05:08:58,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:58,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880898194] [2021-01-07 05:08:58,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:58,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:58,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:08:58,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880898194] [2021-01-07 05:08:58,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-07 05:08:58,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-07 05:08:58,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634634859] [2021-01-07 05:08:58,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-07 05:08:58,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:58,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-07 05:08:58,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-01-07 05:08:58,472 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 5 states. [2021-01-07 05:08:58,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:58,528 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2021-01-07 05:08:58,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-07 05:08:58,528 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2021-01-07 05:08:58,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:58,529 INFO L225 Difference]: With dead ends: 46 [2021-01-07 05:08:58,529 INFO L226 Difference]: Without dead ends: 27 [2021-01-07 05:08:58,530 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-07 05:08:58,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-01-07 05:08:58,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-01-07 05:08:58,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-01-07 05:08:58,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2021-01-07 05:08:58,531 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 25 [2021-01-07 05:08:58,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:58,532 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-01-07 05:08:58,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-07 05:08:58,532 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2021-01-07 05:08:58,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-01-07 05:08:58,532 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:58,533 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:58,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-01-07 05:08:58,533 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE]=== [2021-01-07 05:08:58,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:58,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1806368172, now seen corresponding path program 1 times [2021-01-07 05:08:58,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:58,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785902593] [2021-01-07 05:08:58,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:58,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:58,652 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:58,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785902593] [2021-01-07 05:08:58,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722505287] [2021-01-07 05:08:58,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:58,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:58,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-07 05:08:58,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:58,907 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:58,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:58,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14 [2021-01-07 05:08:58,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609441928] [2021-01-07 05:08:58,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-01-07 05:08:58,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:58,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-01-07 05:08:58,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-01-07 05:08:58,910 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 15 states. [2021-01-07 05:08:59,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:08:59,177 INFO L93 Difference]: Finished difference Result 42 states and 43 transitions. [2021-01-07 05:08:59,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-07 05:08:59,178 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 26 [2021-01-07 05:08:59,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:08:59,178 INFO L225 Difference]: With dead ends: 42 [2021-01-07 05:08:59,179 INFO L226 Difference]: Without dead ends: 42 [2021-01-07 05:08:59,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2021-01-07 05:08:59,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-01-07 05:08:59,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 34. [2021-01-07 05:08:59,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-01-07 05:08:59,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2021-01-07 05:08:59,181 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 26 [2021-01-07 05:08:59,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:08:59,182 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2021-01-07 05:08:59,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-01-07 05:08:59,182 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2021-01-07 05:08:59,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-01-07 05:08:59,183 INFO L414 BasicCegarLoop]: Found error trace [2021-01-07 05:08:59,183 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-07 05:08:59,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-01-07 05:08:59,397 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE]=== [2021-01-07 05:08:59,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-07 05:08:59,398 INFO L82 PathProgramCache]: Analyzing trace with hash 2114587272, now seen corresponding path program 2 times [2021-01-07 05:08:59,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-07 05:08:59,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469819875] [2021-01-07 05:08:59,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-07 05:08:59,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-07 05:08:59,521 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-07 05:08:59,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469819875] [2021-01-07 05:08:59,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131854232] [2021-01-07 05:08:59,522 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:08:59,594 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-07 05:08:59,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-07 05:08:59,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-07 05:08:59,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-07 05:08:59,823 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-01-07 05:08:59,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-07 05:08:59,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2021-01-07 05:08:59,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38398939] [2021-01-07 05:08:59,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-01-07 05:08:59,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-07 05:08:59,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-01-07 05:08:59,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-01-07 05:08:59,828 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 16 states. [2021-01-07 05:09:00,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-07 05:09:00,419 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2021-01-07 05:09:00,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-07 05:09:00,420 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 33 [2021-01-07 05:09:00,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-07 05:09:00,421 INFO L225 Difference]: With dead ends: 67 [2021-01-07 05:09:00,421 INFO L226 Difference]: Without dead ends: 0 [2021-01-07 05:09:00,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=185, Invalid=627, Unknown=0, NotChecked=0, Total=812 [2021-01-07 05:09:00,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-07 05:09:00,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-07 05:09:00,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-07 05:09:00,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-07 05:09:00,423 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2021-01-07 05:09:00,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-07 05:09:00,423 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-07 05:09:00,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-01-07 05:09:00,423 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-07 05:09:00,423 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-07 05:09:00,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-07 05:09:00,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.01 05:09:00 BoogieIcfgContainer [2021-01-07 05:09:00,633 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-07 05:09:00,633 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-07 05:09:00,633 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-07 05:09:00,634 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-07 05:09:00,634 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.01 05:08:52" (3/4) ... [2021-01-07 05:09:00,638 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-07 05:09:00,654 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-01-07 05:09:00,654 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-07 05:09:00,655 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-01-07 05:09:00,655 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-07 05:09:00,714 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/verifythis/elimination_max.c-witness.graphml [2021-01-07 05:09:00,715 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-07 05:09:00,717 INFO L168 Benchmark]: Toolchain (without parser) took 9939.67 ms. Allocated memory was 153.1 MB in the beginning and 222.3 MB in the end (delta: 69.2 MB). Free memory was 108.7 MB in the beginning and 192.5 MB in the end (delta: -83.8 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-07 05:09:00,717 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 153.1 MB. Free memory is still 125.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-07 05:09:00,718 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.90 ms. Allocated memory is still 153.1 MB. Free memory was 108.5 MB in the beginning and 98.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-07 05:09:00,718 INFO L168 Benchmark]: Boogie Procedure Inliner took 97.29 ms. Allocated memory is still 153.1 MB. Free memory was 98.4 MB in the beginning and 135.8 MB in the end (delta: -37.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 8.0 GB. [2021-01-07 05:09:00,719 INFO L168 Benchmark]: Boogie Preprocessor took 39.56 ms. Allocated memory is still 153.1 MB. Free memory was 135.8 MB in the beginning and 134.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-07 05:09:00,719 INFO L168 Benchmark]: RCFGBuilder took 774.98 ms. Allocated memory is still 153.1 MB. Free memory was 134.5 MB in the beginning and 114.4 MB in the end (delta: 20.1 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2021-01-07 05:09:00,720 INFO L168 Benchmark]: TraceAbstraction took 8600.61 ms. Allocated memory was 153.1 MB in the beginning and 222.3 MB in the end (delta: 69.2 MB). Free memory was 113.9 MB in the beginning and 195.7 MB in the end (delta: -81.9 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-07 05:09:00,720 INFO L168 Benchmark]: Witness Printer took 81.35 ms. Allocated memory is still 222.3 MB. Free memory was 195.7 MB in the beginning and 192.5 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-01-07 05:09:00,723 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 153.1 MB. Free memory is still 125.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 335.90 ms. Allocated memory is still 153.1 MB. Free memory was 108.5 MB in the beginning and 98.4 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 97.29 ms. Allocated memory is still 153.1 MB. Free memory was 98.4 MB in the beginning and 135.8 MB in the end (delta: -37.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 39.56 ms. Allocated memory is still 153.1 MB. Free memory was 135.8 MB in the beginning and 134.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 774.98 ms. Allocated memory is still 153.1 MB. Free memory was 134.5 MB in the beginning and 114.4 MB in the end (delta: 20.1 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 8600.61 ms. Allocated memory was 153.1 MB in the beginning and 222.3 MB in the end (delta: 69.2 MB). Free memory was 113.9 MB in the beginning and 195.7 MB in the end (delta: -81.9 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 81.35 ms. Allocated memory is still 222.3 MB. Free memory was 195.7 MB in the beginning and 192.5 MB in the end (delta: 3.2 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: 46]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 35]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 46]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 35]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 11]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 46]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 43]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 35]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 11]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 35]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 43]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 43]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 43]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 16]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 46]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 48]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 48]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 48]: free always succeeds For all program executions holds that free always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 18 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 49 locations, 18 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.5s, OverallIterations: 16, TraceHistogramMax: 3, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 460 SDtfs, 1670 SDslu, 747 SDs, 0 SdLazy, 1301 SolverSat, 107 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 271 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=78occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 16 MinimizatonAttempts, 310 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 372 NumberOfCodeBlocks, 372 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 350 ConstructedInterpolants, 0 QuantifiedInterpolants, 61007 SizeOfPredicates, 17 NumberOfNonLiveVariables, 696 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 22 InterpolantComputations, 13 PerfectInterpolantSequences, 33/62 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...