java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Fixed_noBitfields+AI_EQ_SS.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/memsetNonZero_true-valid-memsafety_true-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-35b68b2 [2018-04-06 21:27:01,969 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-04-06 21:27:01,970 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-04-06 21:27:01,984 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-04-06 21:27:01,984 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-04-06 21:27:01,985 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-04-06 21:27:01,986 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-04-06 21:27:01,988 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-04-06 21:27:01,990 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-04-06 21:27:01,991 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-04-06 21:27:01,992 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-04-06 21:27:01,992 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-04-06 21:27:01,994 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-04-06 21:27:01,995 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-04-06 21:27:01,996 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-04-06 21:27:01,998 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-04-06 21:27:02,000 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-04-06 21:27:02,002 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-04-06 21:27:02,004 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-04-06 21:27:02,005 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-04-06 21:27:02,008 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-04-06 21:27:02,008 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-04-06 21:27:02,008 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-04-06 21:27:02,009 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-04-06 21:27:02,010 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-04-06 21:27:02,011 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-04-06 21:27:02,011 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-04-06 21:27:02,012 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-04-06 21:27:02,013 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-04-06 21:27:02,013 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-04-06 21:27:02,014 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-04-06 21:27:02,014 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Fixed_noBitfields+AI_EQ_SS.epf [2018-04-06 21:27:02,038 INFO L110 SettingsManager]: Loading preferences was successful [2018-04-06 21:27:02,038 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-04-06 21:27:02,038 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-04-06 21:27:02,038 INFO L133 SettingsManager]: * ultimate.logging.details=de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation=DEBUG; [2018-04-06 21:27:02,039 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-04-06 21:27:02,039 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-04-06 21:27:02,039 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-04-06 21:27:02,040 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-04-06 21:27:02,040 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-04-06 21:27:02,040 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-04-06 21:27:02,040 INFO L131 SettingsManager]: Preferences of LTL2Aut differ from their defaults: [2018-04-06 21:27:02,041 INFO L133 SettingsManager]: * Property to check=[] a a: x > 42 [2018-04-06 21:27:02,041 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-04-06 21:27:02,041 INFO L133 SettingsManager]: * sizeof long=4 [2018-04-06 21:27:02,041 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-04-06 21:27:02,041 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-04-06 21:27:02,042 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-04-06 21:27:02,042 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-04-06 21:27:02,042 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-04-06 21:27:02,042 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-04-06 21:27:02,042 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-04-06 21:27:02,042 INFO L133 SettingsManager]: * sizeof long double=12 [2018-04-06 21:27:02,043 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-04-06 21:27:02,043 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-04-06 21:27:02,043 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-04-06 21:27:02,043 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-04-06 21:27:02,043 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-04-06 21:27:02,043 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-04-06 21:27:02,044 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-04-06 21:27:02,044 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-04-06 21:27:02,044 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-04-06 21:27:02,044 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-04-06 21:27:02,044 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-06 21:27:02,044 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-04-06 21:27:02,045 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-04-06 21:27:02,045 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-04-06 21:27:02,046 INFO L131 SettingsManager]: Preferences of Boogie Printer differ from their defaults: [2018-04-06 21:27:02,046 INFO L133 SettingsManager]: * Dump path:=C:\Users\alex\AppData\Local\Temp\ [2018-04-06 21:27:02,076 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-04-06 21:27:02,086 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully (re)initialized [2018-04-06 21:27:02,089 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-04-06 21:27:02,090 INFO L271 PluginConnector]: Initializing CDTParser... [2018-04-06 21:27:02,091 INFO L276 PluginConnector]: CDTParser initialized [2018-04-06 21:27:02,091 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memsetNonZero_true-valid-memsafety_true-termination.c [2018-04-06 21:27:02,140 ERROR L339 mateJobChangeAdapter]: Error during toolchain job processing: java.io.FileNotFoundException: /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/.metadata/.plugins/org.eclipse.core.resources/.projects/FLAGb172a7d52/.markers.snap (No such file or directory) at java.io.FileOutputStream.open0(Native Method) at java.io.FileOutputStream.open(FileOutputStream.java:270) at java.io.FileOutputStream.(FileOutputStream.java:213) at java.io.FileOutputStream.(FileOutputStream.java:133) at org.eclipse.core.internal.localstore.SafeChunkyOutputStream.(SafeChunkyOutputStream.java:45) at org.eclipse.core.internal.localstore.SafeChunkyOutputStream.(SafeChunkyOutputStream.java:41) at org.eclipse.core.internal.resources.SaveManager.visitAndSnap(SaveManager.java:1769) at org.eclipse.core.internal.resources.SaveManager.visitAndSnap(SaveManager.java:1853) at org.eclipse.core.internal.resources.SaveManager.save(SaveManager.java:1222) at org.eclipse.core.internal.resources.SaveManager.save(SaveManager.java:1163) at org.eclipse.core.internal.resources.DelayedSnapshotJob.run(DelayedSnapshotJob.java:52) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-04-06 21:27:02,378 INFO L225 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAG23912fffb [2018-04-06 21:27:02,502 INFO L287 CDTParser]: IsIndexed: true [2018-04-06 21:27:02,502 INFO L288 CDTParser]: Found 1 translation units. [2018-04-06 21:27:02,502 INFO L168 CDTParser]: Scanning memsetNonZero_true-valid-memsafety_true-termination.c [2018-04-06 21:27:02,503 INFO L210 ultiparseSymbolTable]: Include resolver: [2018-04-06 21:27:02,504 INFO L215 ultiparseSymbolTable]: [2018-04-06 21:27:02,504 INFO L218 ultiparseSymbolTable]: Function table: [2018-04-06 21:27:02,504 INFO L221 ultiparseSymbolTable]: Function definition of null ('main') in memsetNonZero_true-valid-memsafety_true-termination.c [2018-04-06 21:27:02,504 INFO L227 ultiparseSymbolTable]: Global variable table: [2018-04-06 21:27:02,504 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fmemsetNonZero_true_valid_memsafety_true_termination_c__size_t in memsetNonZero_true-valid-memsafety_true-termination.c [2018-04-06 21:27:02,504 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fmemsetNonZero_true_valid_memsafety_true_termination_c____kernel_size_t in memsetNonZero_true-valid-memsafety_true-termination.c [2018-04-06 21:27:02,504 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fmemsetNonZero_true_valid_memsafety_true_termination_c____u32 in memsetNonZero_true-valid-memsafety_true-termination.c [2018-04-06 21:27:02,521 INFO L330 CDTParser]: Deleted temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAG23912fffb [2018-04-06 21:27:02,523 ERROR L339 mateJobChangeAdapter]: Error during toolchain job processing: java.io.FileNotFoundException: /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/.metadata/.plugins/org.eclipse.core.resources/.projects/FLAGb172a7d52/.markers.snap (No such file or directory) at java.io.FileOutputStream.open0(Native Method) at java.io.FileOutputStream.open(FileOutputStream.java:270) at java.io.FileOutputStream.(FileOutputStream.java:213) at java.io.FileOutputStream.(FileOutputStream.java:133) at org.eclipse.core.internal.localstore.SafeChunkyOutputStream.(SafeChunkyOutputStream.java:45) at org.eclipse.core.internal.localstore.SafeChunkyOutputStream.(SafeChunkyOutputStream.java:41) at org.eclipse.core.internal.resources.SaveManager.visitAndSnap(SaveManager.java:1769) at org.eclipse.core.internal.resources.SaveManager.visitAndSnap(SaveManager.java:1853) at org.eclipse.core.internal.resources.SaveManager.save(SaveManager.java:1222) at org.eclipse.core.internal.resources.SaveManager.save(SaveManager.java:1163) at org.eclipse.core.internal.resources.DelayedSnapshotJob.run(DelayedSnapshotJob.java:52) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-04-06 21:27:02,526 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-04-06 21:27:02,528 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-04-06 21:27:02,529 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-04-06 21:27:02,530 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-04-06 21:27:02,535 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-04-06 21:27:02,536 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 09:27:02" (1/1) ... [2018-04-06 21:27:02,538 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d3a8461 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 09:27:02, skipping insertion in model container [2018-04-06 21:27:02,538 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 09:27:02" (1/1) ... [2018-04-06 21:27:02,553 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-06 21:27:02,565 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-06 21:27:02,707 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-06 21:27:02,736 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-06 21:27:02,742 INFO L100 SccComputation]: Graph consists of 0 InCaSumBalls and 7 non ball SCCs. Number of states in SCCs 7. [2018-04-06 21:27:02,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 09:27:02 WrapperNode [2018-04-06 21:27:02,750 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-04-06 21:27:02,750 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-04-06 21:27:02,750 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-04-06 21:27:02,750 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-04-06 21:27:02,760 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 09:27:02" (1/1) ... [2018-04-06 21:27:02,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 09:27:02" (1/1) ... [2018-04-06 21:27:02,769 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 09:27:02" (1/1) ... [2018-04-06 21:27:02,769 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 09:27:02" (1/1) ... [2018-04-06 21:27:02,771 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 09:27:02" (1/1) ... [2018-04-06 21:27:02,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 09:27:02" (1/1) ... [2018-04-06 21:27:02,778 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 09:27:02" (1/1) ... [2018-04-06 21:27:02,779 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-04-06 21:27:02,780 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-04-06 21:27:02,780 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-04-06 21:27:02,780 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-04-06 21:27:02,781 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 09:27:02" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-04-06 21:27:02,837 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-04-06 21:27:02,837 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-04-06 21:27:02,837 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-04-06 21:27:02,837 INFO L136 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2018-04-06 21:27:02,837 INFO L128 BoogieDeclarations]: Found specification of procedure memset [2018-04-06 21:27:02,838 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-04-06 21:27:02,838 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-04-06 21:27:02,838 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2018-04-06 21:27:02,838 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-04-06 21:27:02,838 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-04-06 21:27:02,838 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-04-06 21:27:02,990 WARN L446 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2018-04-06 21:27:03,058 INFO L259 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-04-06 21:27:03,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 09:27:03 BoogieIcfgContainer [2018-04-06 21:27:03,059 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-04-06 21:27:03,060 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-04-06 21:27:03,060 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-04-06 21:27:03,062 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-04-06 21:27:03,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.04 09:27:02" (1/3) ... [2018-04-06 21:27:03,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a98a9f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 09:27:03, skipping insertion in model container [2018-04-06 21:27:03,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 09:27:02" (2/3) ... [2018-04-06 21:27:03,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a98a9f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 09:27:03, skipping insertion in model container [2018-04-06 21:27:03,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 09:27:03" (3/3) ... [2018-04-06 21:27:03,066 INFO L107 eAbstractionObserver]: Analyzing ICFG memsetNonZero_true-valid-memsafety_true-termination.c [2018-04-06 21:27:03,073 INFO L131 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-04-06 21:27:03,079 INFO L143 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-04-06 21:27:03,113 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-04-06 21:27:03,114 INFO L369 AbstractCegarLoop]: Interprodecural is true [2018-04-06 21:27:03,114 INFO L370 AbstractCegarLoop]: Hoare is true [2018-04-06 21:27:03,114 INFO L371 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-04-06 21:27:03,114 INFO L372 AbstractCegarLoop]: Backedges is TWOTRACK [2018-04-06 21:27:03,114 INFO L373 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-04-06 21:27:03,114 INFO L374 AbstractCegarLoop]: Difference is false [2018-04-06 21:27:03,114 INFO L375 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-04-06 21:27:03,114 INFO L380 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-04-06 21:27:03,115 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-04-06 21:27:03,128 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2018-04-06 21:27:03,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-04-06 21:27:03,133 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 21:27:03,134 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-04-06 21:27:03,134 INFO L408 AbstractCegarLoop]: === Iteration 1 === [mainErr1RequiresViolation, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-06 21:27:03,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1964876918, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-06 21:27:03,160 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 21:27:03,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 21:27:03,198 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 21:27:03,246 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-06 21:27:03,248 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-06 21:27:03,257 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-06 21:27:03,257 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-04-06 21:27:03,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-06 21:27:03,277 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 21:27:03,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-06 21:27:03,310 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-06 21:27:03,311 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2018-04-06 21:27:03,312 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-04-06 21:27:03,324 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-04-06 21:27:03,324 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-04-06 21:27:03,326 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 3 states. [2018-04-06 21:27:03,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 21:27:03,365 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-04-06 21:27:03,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-04-06 21:27:03,367 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-04-06 21:27:03,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 21:27:03,378 INFO L225 Difference]: With dead ends: 26 [2018-04-06 21:27:03,379 INFO L226 Difference]: Without dead ends: 22 [2018-04-06 21:27:03,382 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-04-06 21:27:03,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-04-06 21:27:03,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-04-06 21:27:03,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-04-06 21:27:03,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-04-06 21:27:03,411 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 8 [2018-04-06 21:27:03,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 21:27:03,412 INFO L459 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-04-06 21:27:03,412 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-04-06 21:27:03,412 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-04-06 21:27:03,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-04-06 21:27:03,412 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 21:27:03,413 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-04-06 21:27:03,413 INFO L408 AbstractCegarLoop]: === Iteration 2 === [mainErr1RequiresViolation, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-06 21:27:03,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1964876917, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-06 21:27:03,422 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 21:27:03,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 21:27:03,440 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 21:27:03,457 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-06 21:27:03,457 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-06 21:27:03,462 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-06 21:27:03,462 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-04-06 21:27:03,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-06 21:27:03,477 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 21:27:03,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-06 21:27:03,528 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-06 21:27:03,529 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2018-04-06 21:27:03,530 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-04-06 21:27:03,530 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-04-06 21:27:03,531 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-04-06 21:27:03,531 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 4 states. [2018-04-06 21:27:03,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 21:27:03,553 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-04-06 21:27:03,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-04-06 21:27:03,554 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-04-06 21:27:03,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 21:27:03,555 INFO L225 Difference]: With dead ends: 22 [2018-04-06 21:27:03,555 INFO L226 Difference]: Without dead ends: 21 [2018-04-06 21:27:03,556 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-04-06 21:27:03,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-04-06 21:27:03,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-04-06 21:27:03,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-04-06 21:27:03,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-04-06 21:27:03,560 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 8 [2018-04-06 21:27:03,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 21:27:03,560 INFO L459 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-04-06 21:27:03,561 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-04-06 21:27:03,561 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-04-06 21:27:03,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-04-06 21:27:03,562 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 21:27:03,562 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-06 21:27:03,562 INFO L408 AbstractCegarLoop]: === Iteration 3 === [mainErr1RequiresViolation, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-06 21:27:03,562 INFO L82 PathProgramCache]: Analyzing trace with hash 385100327, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-06 21:27:03,575 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 21:27:03,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 21:27:03,601 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 21:27:03,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-06 21:27:03,625 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 21:27:03,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-06 21:27:03,718 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-06 21:27:03,718 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2018-04-06 21:27:03,719 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-04-06 21:27:03,719 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-04-06 21:27:03,719 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-04-06 21:27:03,719 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 6 states. [2018-04-06 21:27:03,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 21:27:03,771 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2018-04-06 21:27:03,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-04-06 21:27:03,771 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-04-06 21:27:03,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 21:27:03,772 INFO L225 Difference]: With dead ends: 34 [2018-04-06 21:27:03,772 INFO L226 Difference]: Without dead ends: 24 [2018-04-06 21:27:03,773 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-04-06 21:27:03,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-04-06 21:27:03,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-04-06 21:27:03,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-04-06 21:27:03,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-04-06 21:27:03,776 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 19 [2018-04-06 21:27:03,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 21:27:03,776 INFO L459 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-04-06 21:27:03,776 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-04-06 21:27:03,776 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-04-06 21:27:03,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-04-06 21:27:03,777 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 21:27:03,777 INFO L355 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-06 21:27:03,777 INFO L408 AbstractCegarLoop]: === Iteration 4 === [mainErr1RequiresViolation, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-06 21:27:03,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1790419159, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-06 21:27:03,787 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 21:27:03,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 21:27:03,806 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 21:27:03,828 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-06 21:27:03,828 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 21:27:03,939 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-06 21:27:03,959 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-06 21:27:03,960 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-04-06 21:27:03,960 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-04-06 21:27:03,960 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-04-06 21:27:03,960 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-04-06 21:27:03,961 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 10 states. [2018-04-06 21:27:04,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 21:27:04,001 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2018-04-06 21:27:04,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-04-06 21:27:04,001 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 23 [2018-04-06 21:27:04,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 21:27:04,002 INFO L225 Difference]: With dead ends: 42 [2018-04-06 21:27:04,002 INFO L226 Difference]: Without dead ends: 32 [2018-04-06 21:27:04,002 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2018-04-06 21:27:04,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-04-06 21:27:04,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-04-06 21:27:04,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-04-06 21:27:04,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-04-06 21:27:04,008 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 23 [2018-04-06 21:27:04,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 21:27:04,008 INFO L459 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-04-06 21:27:04,009 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-04-06 21:27:04,009 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-04-06 21:27:04,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-04-06 21:27:04,009 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 21:27:04,010 INFO L355 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-06 21:27:04,010 INFO L408 AbstractCegarLoop]: === Iteration 5 === [mainErr1RequiresViolation, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-06 21:27:04,010 INFO L82 PathProgramCache]: Analyzing trace with hash -227650003, now seen corresponding path program 2 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-06 21:27:04,018 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 21:27:04,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 21:27:04,038 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 21:27:04,119 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-06 21:27:04,119 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 21:27:04,464 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-06 21:27:04,486 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-06 21:27:04,486 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2018-04-06 21:27:04,487 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-04-06 21:27:04,487 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-04-06 21:27:04,487 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=167, Unknown=0, NotChecked=0, Total=306 [2018-04-06 21:27:04,487 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 18 states. [2018-04-06 21:27:04,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 21:27:04,631 INFO L93 Difference]: Finished difference Result 58 states and 65 transitions. [2018-04-06 21:27:04,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-04-06 21:27:04,632 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 31 [2018-04-06 21:27:04,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 21:27:04,634 INFO L225 Difference]: With dead ends: 58 [2018-04-06 21:27:04,634 INFO L226 Difference]: Without dead ends: 48 [2018-04-06 21:27:04,635 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=151, Invalid=191, Unknown=0, NotChecked=0, Total=342 [2018-04-06 21:27:04,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-04-06 21:27:04,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-04-06 21:27:04,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-04-06 21:27:04,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2018-04-06 21:27:04,643 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 31 [2018-04-06 21:27:04,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 21:27:04,644 INFO L459 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2018-04-06 21:27:04,644 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-04-06 21:27:04,644 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2018-04-06 21:27:04,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-04-06 21:27:04,646 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 21:27:04,646 INFO L355 BasicCegarLoop]: trace histogram [14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-06 21:27:04,646 INFO L408 AbstractCegarLoop]: === Iteration 6 === [mainErr1RequiresViolation, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-06 21:27:04,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1304328245, now seen corresponding path program 3 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-06 21:27:04,661 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 21:27:04,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 21:27:04,688 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 21:27:04,900 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-06 21:27:04,900 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 21:27:05,300 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-06 21:27:05,322 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-06 21:27:05,322 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2018-04-06 21:27:05,323 INFO L442 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-04-06 21:27:05,323 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-04-06 21:27:05,323 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=531, Invalid=591, Unknown=0, NotChecked=0, Total=1122 [2018-04-06 21:27:05,324 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 34 states. [2018-04-06 21:27:05,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 21:27:05,573 INFO L93 Difference]: Finished difference Result 90 states and 105 transitions. [2018-04-06 21:27:05,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-04-06 21:27:05,573 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 47 [2018-04-06 21:27:05,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 21:27:05,575 INFO L225 Difference]: With dead ends: 90 [2018-04-06 21:27:05,576 INFO L226 Difference]: Without dead ends: 80 [2018-04-06 21:27:05,576 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=551, Invalid=639, Unknown=0, NotChecked=0, Total=1190 [2018-04-06 21:27:05,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-04-06 21:27:05,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2018-04-06 21:27:05,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-04-06 21:27:05,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2018-04-06 21:27:05,587 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 47 [2018-04-06 21:27:05,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 21:27:05,588 INFO L459 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2018-04-06 21:27:05,588 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-04-06 21:27:05,588 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2018-04-06 21:27:05,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-04-06 21:27:05,591 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 21:27:05,591 INFO L355 BasicCegarLoop]: trace histogram [30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-06 21:27:05,591 INFO L408 AbstractCegarLoop]: === Iteration 7 === [mainErr1RequiresViolation, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-06 21:27:05,591 INFO L82 PathProgramCache]: Analyzing trace with hash -824210363, now seen corresponding path program 4 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-06 21:27:05,598 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 21:27:05,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 21:27:05,622 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 21:27:06,116 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-06 21:27:06,116 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 21:27:07,620 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-06 21:27:07,642 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-06 21:27:07,642 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2018-04-06 21:27:07,643 INFO L442 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-04-06 21:27:07,644 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-04-06 21:27:07,646 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2083, Invalid=2207, Unknown=0, NotChecked=0, Total=4290 [2018-04-06 21:27:07,646 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 66 states. [2018-04-06 21:27:08,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 21:27:08,039 INFO L93 Difference]: Finished difference Result 154 states and 185 transitions. [2018-04-06 21:27:08,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-04-06 21:27:08,039 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 79 [2018-04-06 21:27:08,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 21:27:08,041 INFO L225 Difference]: With dead ends: 154 [2018-04-06 21:27:08,041 INFO L226 Difference]: Without dead ends: 144 [2018-04-06 21:27:08,042 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2119, Invalid=2303, Unknown=0, NotChecked=0, Total=4422 [2018-04-06 21:27:08,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-04-06 21:27:08,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2018-04-06 21:27:08,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-04-06 21:27:08,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 144 transitions. [2018-04-06 21:27:08,055 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 144 transitions. Word has length 79 [2018-04-06 21:27:08,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 21:27:08,056 INFO L459 AbstractCegarLoop]: Abstraction has 144 states and 144 transitions. [2018-04-06 21:27:08,056 INFO L460 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-04-06 21:27:08,056 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 144 transitions. [2018-04-06 21:27:08,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-04-06 21:27:08,058 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 21:27:08,058 INFO L355 BasicCegarLoop]: trace histogram [62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-06 21:27:08,058 INFO L408 AbstractCegarLoop]: === Iteration 8 === [mainErr1RequiresViolation, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-06 21:27:08,058 INFO L82 PathProgramCache]: Analyzing trace with hash 245691493, now seen corresponding path program 5 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-06 21:27:08,068 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 21:27:08,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 21:27:08,107 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 21:27:09,405 INFO L134 CoverageAnalysis]: Checked inductivity of 3844 backedges. 0 proven. 3844 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-06 21:27:09,406 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 21:27:09,598 WARN L148 SmtUtils]: Spent 187ms on a formula simplification that was a NOOP. DAG size: 194 [2018-04-06 21:27:09,781 WARN L148 SmtUtils]: Spent 179ms on a formula simplification that was a NOOP. DAG size: 194 [2018-04-06 21:27:12,901 INFO L134 CoverageAnalysis]: Checked inductivity of 3844 backedges. 0 proven. 3844 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-06 21:27:12,922 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-06 21:27:12,923 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 130 [2018-04-06 21:27:12,924 INFO L442 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-04-06 21:27:12,924 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-04-06 21:27:12,927 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7224, Invalid=9546, Unknown=0, NotChecked=0, Total=16770 [2018-04-06 21:27:12,927 INFO L87 Difference]: Start difference. First operand 144 states and 144 transitions. Second operand 130 states. [2018-04-06 21:27:13,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 21:27:13,348 INFO L93 Difference]: Finished difference Result 190 states and 207 transitions. [2018-04-06 21:27:13,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-04-06 21:27:13,348 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 143 [2018-04-06 21:27:13,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 21:27:13,351 INFO L225 Difference]: With dead ends: 190 [2018-04-06 21:27:13,351 INFO L226 Difference]: Without dead ends: 180 [2018-04-06 21:27:13,355 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 156 SyntacticMatches, 1 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2914 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=7292, Invalid=9738, Unknown=0, NotChecked=0, Total=17030 [2018-04-06 21:27:13,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2018-04-06 21:27:13,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2018-04-06 21:27:13,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2018-04-06 21:27:13,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 180 transitions. [2018-04-06 21:27:13,375 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 180 transitions. Word has length 143 [2018-04-06 21:27:13,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 21:27:13,376 INFO L459 AbstractCegarLoop]: Abstraction has 180 states and 180 transitions. [2018-04-06 21:27:13,376 INFO L460 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-04-06 21:27:13,376 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 180 transitions. [2018-04-06 21:27:13,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-04-06 21:27:13,379 INFO L347 BasicCegarLoop]: Found error trace [2018-04-06 21:27:13,380 INFO L355 BasicCegarLoop]: trace histogram [80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-06 21:27:13,380 INFO L408 AbstractCegarLoop]: === Iteration 9 === [mainErr1RequiresViolation, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-06 21:27:13,380 INFO L82 PathProgramCache]: Analyzing trace with hash -2044090761, now seen corresponding path program 6 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-06 21:27:13,386 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-06 21:27:13,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-06 21:27:13,425 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-06 21:27:13,439 INFO L700 Elim1Store]: detected not equals via solver [2018-04-06 21:27:13,440 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2018-04-06 21:27:13,440 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-06 21:27:13,442 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-04-06 21:27:13,442 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2018-04-06 21:27:13,554 WARN L1033 $PredicateComparison]: unable to prove that (exists ((|main_~#cstats~0.base| Int)) (and (= |c_#valid| (store |c_old(#valid)| |main_~#cstats~0.base| 0)) (= 0 (select |c_old(#valid)| |main_~#cstats~0.base|)))) is different from true [2018-04-06 21:27:13,654 INFO L134 CoverageAnalysis]: Checked inductivity of 6400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6400 trivial. 0 not checked. [2018-04-06 21:27:13,655 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-06 21:27:13,708 WARN L1011 $PredicateComparison]: unable to prove that (forall ((|v_main_~#cstats~0.base_18| Int)) (or (not (= 0 (select |c_#valid| |v_main_~#cstats~0.base_18|))) (= (store |c_#valid| |v_main_~#cstats~0.base_18| 0) |c_old(#valid)|))) is different from false [2018-04-06 21:27:13,739 INFO L134 CoverageAnalysis]: Checked inductivity of 6400 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6400 trivial. 0 not checked. [2018-04-06 21:27:13,776 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-06 21:27:13,776 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2018-04-06 21:27:13,777 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-04-06 21:27:13,777 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-04-06 21:27:13,777 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=21, Unknown=2, NotChecked=18, Total=56 [2018-04-06 21:27:13,778 INFO L87 Difference]: Start difference. First operand 180 states and 180 transitions. Second operand 8 states. [2018-04-06 21:27:13,799 WARN L1011 $PredicateComparison]: unable to prove that (and (= |c_#valid| |c_old(#valid)|) (forall ((|v_main_~#cstats~0.base_18| Int)) (or (not (= 0 (select |c_#valid| |v_main_~#cstats~0.base_18|))) (= (store |c_#valid| |v_main_~#cstats~0.base_18| 0) |c_old(#valid)|)))) is different from false [2018-04-06 21:27:13,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-06 21:27:13,913 INFO L93 Difference]: Finished difference Result 180 states and 180 transitions. [2018-04-06 21:27:13,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-04-06 21:27:13,913 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 179 [2018-04-06 21:27:13,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-06 21:27:13,915 INFO L225 Difference]: With dead ends: 180 [2018-04-06 21:27:13,915 INFO L226 Difference]: Without dead ends: 0 [2018-04-06 21:27:13,916 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 350 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=52, Unknown=3, NotChecked=48, Total=132 [2018-04-06 21:27:13,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-04-06 21:27:13,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-04-06 21:27:13,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-04-06 21:27:13,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-04-06 21:27:13,917 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 179 [2018-04-06 21:27:13,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-06 21:27:13,917 INFO L459 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-04-06 21:27:13,918 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-04-06 21:27:13,918 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-04-06 21:27:13,918 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-04-06 21:27:13,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-04-06 21:27:14,116 WARN L151 SmtUtils]: Spent 146ms on a formula simplification. DAG size of input: 311 DAG size of output 9 [2018-04-06 21:27:14,211 INFO L416 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2018-04-06 21:27:14,211 INFO L416 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-04-06 21:27:14,211 INFO L412 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= |#valid| |old(#valid)|) [2018-04-06 21:27:14,212 INFO L416 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-04-06 21:27:14,212 INFO L419 ceAbstractionStarter]: At program point #Ultimate.C_memsetENTRY(line -1) the Hoare annotation is: true [2018-04-06 21:27:14,212 INFO L416 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2018-04-06 21:27:14,212 INFO L416 ceAbstractionStarter]: For program point L-1'(line -1) no Hoare annotation was computed. [2018-04-06 21:27:14,212 INFO L419 ceAbstractionStarter]: At program point L-1''(line -1) the Hoare annotation is: true [2018-04-06 21:27:14,212 INFO L416 ceAbstractionStarter]: For program point #Ultimate.C_memsetFINAL(line -1) no Hoare annotation was computed. [2018-04-06 21:27:14,212 INFO L416 ceAbstractionStarter]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2018-04-06 21:27:14,212 INFO L416 ceAbstractionStarter]: For program point #Ultimate.C_memsetEXIT(line -1) no Hoare annotation was computed. [2018-04-06 21:27:14,212 INFO L419 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-04-06 21:27:14,212 INFO L419 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-04-06 21:27:14,212 INFO L416 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-04-06 21:27:14,212 INFO L416 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-04-06 21:27:14,212 INFO L412 ceAbstractionStarter]: At program point mainENTRY(lines 25 29) the Hoare annotation is: (= |#valid| |old(#valid)|) [2018-04-06 21:27:14,213 INFO L416 ceAbstractionStarter]: For program point L27(line 27) no Hoare annotation was computed. [2018-04-06 21:27:14,213 INFO L412 ceAbstractionStarter]: At program point L26(line 26) the Hoare annotation is: (and (= 80 (select |#length| |main_~#cstats~0.base|)) (= |#valid| (store |old(#valid)| |main_~#cstats~0.base| 1)) (= 0 (select |old(#valid)| |main_~#cstats~0.base|)) (= 0 |main_~#cstats~0.offset|)) [2018-04-06 21:27:14,213 INFO L416 ceAbstractionStarter]: For program point mainErr1RequiresViolation(line 27) no Hoare annotation was computed. [2018-04-06 21:27:14,213 INFO L416 ceAbstractionStarter]: For program point L28(line 28) no Hoare annotation was computed. [2018-04-06 21:27:14,213 INFO L416 ceAbstractionStarter]: For program point L26'(line 26) no Hoare annotation was computed. [2018-04-06 21:27:14,213 INFO L416 ceAbstractionStarter]: For program point L26''(line 26) no Hoare annotation was computed. [2018-04-06 21:27:14,213 INFO L416 ceAbstractionStarter]: For program point mainFINAL(lines 25 29) no Hoare annotation was computed. [2018-04-06 21:27:14,213 INFO L416 ceAbstractionStarter]: For program point mainErr2EnsuresViolationMEMORY_LEAK(lines 25 29) no Hoare annotation was computed. [2018-04-06 21:27:14,213 INFO L416 ceAbstractionStarter]: For program point mainErr0RequiresViolation(line 27) no Hoare annotation was computed. [2018-04-06 21:27:14,213 INFO L416 ceAbstractionStarter]: For program point mainEXIT(lines 25 29) no Hoare annotation was computed. [2018-04-06 21:27:14,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 09:27:14 BoogieIcfgContainer [2018-04-06 21:27:14,218 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-04-06 21:27:14,219 INFO L168 Benchmark]: Toolchain (without parser) took 11691.69 ms. Allocated memory was 296.7 MB in the beginning and 611.8 MB in the end (delta: 315.1 MB). Free memory was 240.1 MB in the beginning and 480.3 MB in the end (delta: -240.2 MB). Peak memory consumption was 74.9 MB. Max. memory is 5.3 GB. [2018-04-06 21:27:14,220 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 296.7 MB. Free memory is still 257.5 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-04-06 21:27:14,220 INFO L168 Benchmark]: CACSL2BoogieTranslator took 220.48 ms. Allocated memory is still 296.7 MB. Free memory was 240.1 MB in the beginning and 229.9 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 5.3 GB. [2018-04-06 21:27:14,220 INFO L168 Benchmark]: Boogie Preprocessor took 29.34 ms. Allocated memory is still 296.7 MB. Free memory is still 229.9 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-04-06 21:27:14,220 INFO L168 Benchmark]: RCFGBuilder took 279.33 ms. Allocated memory was 296.7 MB in the beginning and 449.8 MB in the end (delta: 153.1 MB). Free memory was 229.9 MB in the beginning and 420.3 MB in the end (delta: -190.4 MB). Peak memory consumption was 23.5 MB. Max. memory is 5.3 GB. [2018-04-06 21:27:14,221 INFO L168 Benchmark]: TraceAbstraction took 11158.17 ms. Allocated memory was 449.8 MB in the beginning and 611.8 MB in the end (delta: 162.0 MB). Free memory was 420.3 MB in the beginning and 480.3 MB in the end (delta: -60.0 MB). Peak memory consumption was 102.0 MB. Max. memory is 5.3 GB. [2018-04-06 21:27:14,223 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 296.7 MB. Free memory is still 257.5 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 220.48 ms. Allocated memory is still 296.7 MB. Free memory was 240.1 MB in the beginning and 229.9 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 29.34 ms. Allocated memory is still 296.7 MB. Free memory is still 229.9 MB. There was no memory consumed. Max. memory is 5.3 GB. * RCFGBuilder took 279.33 ms. Allocated memory was 296.7 MB in the beginning and 449.8 MB in the end (delta: 153.1 MB). Free memory was 229.9 MB in the beginning and 420.3 MB in the end (delta: -190.4 MB). Peak memory consumption was 23.5 MB. Max. memory is 5.3 GB. * TraceAbstraction took 11158.17 ms. Allocated memory was 449.8 MB in the beginning and 611.8 MB in the end (delta: 162.0 MB). Free memory was 420.3 MB in the beginning and 480.3 MB in the end (delta: -60.0 MB). Peak memory consumption was 102.0 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 27]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 25]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 27]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 26 locations, 3 error locations. SAFE Result, 11.1s OverallTime, 9 OverallIterations, 80 TraceHistogramMax, 1.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 166 SDtfs, 487 SDslu, 394 SDs, 0 SdLazy, 597 SolverSat, 903 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1075 GetRequests, 797 SyntacticMatches, 7 SemanticMatches, 271 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 3023 ImplicationChecksByTransitivity, 7.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=180occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 87 NumberOfFragments, 30 HoareAnnotationTreeSize, 7 FomulaSimplifications, 1644 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 54 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 8.5s InterpolantComputationTime, 537 NumberOfCodeBlocks, 537 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1056 ConstructedInterpolants, 169 QuantifiedInterpolants, 536292 SizeOfPredicates, 8 NumberOfNonLiveVariables, 1089 ConjunctsInSsa, 146 ConjunctsInUnsatCore, 18 InterpolantComputations, 8 PerfectInterpolantSequences, 12800/22760 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memsetNonZero_true-valid-memsafety_true-termination.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Fixed_noBitfields+AI_EQ_SS.epf_AutomizerC.xml/Csv-Benchmark-0-2018-04-06_21-27-14-230.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memsetNonZero_true-valid-memsafety_true-termination.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Fixed_noBitfields+AI_EQ_SS.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-04-06_21-27-14-230.csv Received shutdown request...