./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength4.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 97fe3d28a1849ecc88958d9d302f4fb4c5dbb992 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 03:36:30,709 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 03:36:30,713 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 03:36:30,768 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 03:36:30,769 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 03:36:30,775 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 03:36:30,778 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 03:36:30,785 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 03:36:30,793 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 03:36:30,798 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 03:36:30,799 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 03:36:30,804 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 03:36:30,804 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 03:36:30,807 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 03:36:30,808 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 03:36:30,810 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 03:36:30,812 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 03:36:30,815 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 03:36:30,819 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 03:36:30,825 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 03:36:30,827 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 03:36:30,830 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 03:36:30,833 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 03:36:30,835 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 03:36:30,843 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 03:36:30,844 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 03:36:30,844 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 03:36:30,846 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 03:36:30,847 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 03:36:30,848 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 03:36:30,849 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 03:36:30,850 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 03:36:30,852 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 03:36:30,853 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 03:36:30,855 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 03:36:30,855 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 03:36:30,858 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 03:36:30,859 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 03:36:30,859 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 03:36:30,861 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 03:36:30,862 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 03:36:30,864 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-26 03:36:30,922 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 03:36:30,922 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 03:36:30,926 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 03:36:30,927 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 03:36:30,927 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 03:36:30,927 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 03:36:30,927 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 03:36:30,927 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 03:36:30,928 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 03:36:30,928 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 03:36:30,931 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 03:36:30,932 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-26 03:36:30,932 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-26 03:36:30,932 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-26 03:36:30,932 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 03:36:30,933 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-26 03:36:30,933 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 03:36:30,933 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 03:36:30,934 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 03:36:30,934 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 03:36:30,934 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 03:36:30,935 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 03:36:30,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 03:36:30,935 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 03:36:30,935 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 03:36:30,936 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 03:36:30,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 03:36:30,936 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 03:36:30,937 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97fe3d28a1849ecc88958d9d302f4fb4c5dbb992 [2020-10-26 03:36:31,413 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 03:36:31,446 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 03:36:31,451 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 03:36:31,453 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 03:36:31,454 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 03:36:31,456 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength4.c [2020-10-26 03:36:31,564 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b243bac0/e1aac66ebb8d491bbde54dfbe1ed5a16/FLAG7fbf2f53b [2020-10-26 03:36:32,243 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 03:36:32,244 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength4.c [2020-10-26 03:36:32,252 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b243bac0/e1aac66ebb8d491bbde54dfbe1ed5a16/FLAG7fbf2f53b [2020-10-26 03:36:32,593 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b243bac0/e1aac66ebb8d491bbde54dfbe1ed5a16 [2020-10-26 03:36:32,597 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 03:36:32,604 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-26 03:36:32,606 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 03:36:32,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 03:36:32,635 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 03:36:32,637 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 03:36:32" (1/1) ... [2020-10-26 03:36:32,644 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@441ce994 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:36:32, skipping insertion in model container [2020-10-26 03:36:32,647 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 03:36:32" (1/1) ... [2020-10-26 03:36:32,676 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 03:36:32,695 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 03:36:32,871 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 03:36:32,883 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 03:36:32,904 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 03:36:32,922 INFO L208 MainTranslator]: Completed translation [2020-10-26 03:36:32,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:36:32 WrapperNode [2020-10-26 03:36:32,923 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 03:36:32,924 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 03:36:32,925 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 03:36:32,925 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 03:36:32,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:36:32" (1/1) ... [2020-10-26 03:36:32,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:36:32" (1/1) ... [2020-10-26 03:36:32,949 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:36:32" (1/1) ... [2020-10-26 03:36:32,950 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:36:32" (1/1) ... [2020-10-26 03:36:32,958 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:36:32" (1/1) ... [2020-10-26 03:36:32,963 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:36:32" (1/1) ... [2020-10-26 03:36:32,965 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:36:32" (1/1) ... [2020-10-26 03:36:32,968 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 03:36:32,969 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 03:36:32,969 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 03:36:32,969 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 03:36:32,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:36:32" (1/1) ... No working directory specified, using /storage/repos/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 [2020-10-26 03:36:33,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 03:36:33,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 03:36:33,056 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-10-26 03:36:33,057 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 03:36:33,057 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-10-26 03:36:33,057 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 03:36:33,058 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 03:36:33,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 03:36:33,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 03:36:33,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 03:36:33,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 03:36:33,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 03:36:33,399 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 03:36:33,399 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-26 03:36:33,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:36:33 BoogieIcfgContainer [2020-10-26 03:36:33,402 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 03:36:33,404 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 03:36:33,404 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 03:36:33,408 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 03:36:33,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 03:36:32" (1/3) ... [2020-10-26 03:36:33,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5caa9ed4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 03:36:33, skipping insertion in model container [2020-10-26 03:36:33,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:36:32" (2/3) ... [2020-10-26 03:36:33,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5caa9ed4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 03:36:33, skipping insertion in model container [2020-10-26 03:36:33,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:36:33" (3/3) ... [2020-10-26 03:36:33,413 INFO L111 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength4.c [2020-10-26 03:36:33,435 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 03:36:33,447 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-10-26 03:36:33,480 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-10-26 03:36:33,527 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 03:36:33,528 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-26 03:36:33,528 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 03:36:33,528 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 03:36:33,528 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 03:36:33,528 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 03:36:33,528 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 03:36:33,529 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 03:36:33,551 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-10-26 03:36:33,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-26 03:36:33,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:36:33,562 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:36:33,563 INFO L429 AbstractCegarLoop]: === Iteration 1 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:36:33,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:36:33,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1909189377, now seen corresponding path program 1 times [2020-10-26 03:36:33,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:36:33,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88343799] [2020-10-26 03:36:33,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:36:33,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:33,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:36:33,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:33,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:36:33,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88343799] [2020-10-26 03:36:33,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:36:33,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:36:33,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910107509] [2020-10-26 03:36:33,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:36:33,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:36:33,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:36:33,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:36:33,833 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 4 states. [2020-10-26 03:36:34,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:36:34,064 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2020-10-26 03:36:34,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 03:36:34,066 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-26 03:36:34,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:36:34,076 INFO L225 Difference]: With dead ends: 58 [2020-10-26 03:36:34,076 INFO L226 Difference]: Without dead ends: 54 [2020-10-26 03:36:34,078 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 03:36:34,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-26 03:36:34,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 39. [2020-10-26 03:36:34,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-26 03:36:34,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-10-26 03:36:34,135 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 10 [2020-10-26 03:36:34,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:36:34,137 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-10-26 03:36:34,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:36:34,138 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-10-26 03:36:34,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-26 03:36:34,139 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:36:34,139 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:36:34,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 03:36:34,140 INFO L429 AbstractCegarLoop]: === Iteration 2 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:36:34,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:36:34,141 INFO L82 PathProgramCache]: Analyzing trace with hash -941983064, now seen corresponding path program 1 times [2020-10-26 03:36:34,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:36:34,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620812544] [2020-10-26 03:36:34,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:36:34,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:34,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:36:34,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:34,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:36:34,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620812544] [2020-10-26 03:36:34,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:36:34,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 03:36:34,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943196539] [2020-10-26 03:36:34,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:36:34,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:36:34,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:36:34,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:36:34,279 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 4 states. [2020-10-26 03:36:34,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:36:34,387 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2020-10-26 03:36:34,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:36:34,387 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-26 03:36:34,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:36:34,391 INFO L225 Difference]: With dead ends: 49 [2020-10-26 03:36:34,391 INFO L226 Difference]: Without dead ends: 49 [2020-10-26 03:36:34,392 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 03:36:34,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-26 03:36:34,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 41. [2020-10-26 03:36:34,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-26 03:36:34,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-26 03:36:34,400 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 11 [2020-10-26 03:36:34,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:36:34,401 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-26 03:36:34,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:36:34,401 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-26 03:36:34,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-26 03:36:34,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:36:34,402 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:36:34,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 03:36:34,403 INFO L429 AbstractCegarLoop]: === Iteration 3 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:36:34,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:36:34,403 INFO L82 PathProgramCache]: Analyzing trace with hash 863296133, now seen corresponding path program 1 times [2020-10-26 03:36:34,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:36:34,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776414865] [2020-10-26 03:36:34,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:36:34,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:34,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:36:34,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:34,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:36:34,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776414865] [2020-10-26 03:36:34,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:36:34,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 03:36:34,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463619649] [2020-10-26 03:36:34,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 03:36:34,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:36:34,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 03:36:34,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-26 03:36:34,505 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 6 states. [2020-10-26 03:36:34,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:36:34,680 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2020-10-26 03:36:34,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 03:36:34,681 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-10-26 03:36:34,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:36:34,683 INFO L225 Difference]: With dead ends: 40 [2020-10-26 03:36:34,683 INFO L226 Difference]: Without dead ends: 40 [2020-10-26 03:36:34,683 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 03:36:34,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-26 03:36:34,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-10-26 03:36:34,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-26 03:36:34,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-10-26 03:36:34,691 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 12 [2020-10-26 03:36:34,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:36:34,691 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-10-26 03:36:34,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 03:36:34,692 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-10-26 03:36:34,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-26 03:36:34,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:36:34,693 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:36:34,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 03:36:34,693 INFO L429 AbstractCegarLoop]: === Iteration 4 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:36:34,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:36:34,694 INFO L82 PathProgramCache]: Analyzing trace with hash 863296134, now seen corresponding path program 1 times [2020-10-26 03:36:34,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:36:34,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142583679] [2020-10-26 03:36:34,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:36:34,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:34,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:36:34,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:34,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:36:34,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142583679] [2020-10-26 03:36:34,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:36:34,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 03:36:34,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091067040] [2020-10-26 03:36:34,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 03:36:34,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:36:34,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 03:36:34,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-26 03:36:34,888 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 6 states. [2020-10-26 03:36:35,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:36:35,093 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2020-10-26 03:36:35,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 03:36:35,093 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-10-26 03:36:35,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:36:35,095 INFO L225 Difference]: With dead ends: 46 [2020-10-26 03:36:35,095 INFO L226 Difference]: Without dead ends: 46 [2020-10-26 03:36:35,095 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 03:36:35,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-26 03:36:35,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2020-10-26 03:36:35,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-26 03:36:35,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-26 03:36:35,103 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 12 [2020-10-26 03:36:35,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:36:35,103 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-26 03:36:35,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 03:36:35,104 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-26 03:36:35,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-26 03:36:35,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:36:35,104 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:36:35,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 03:36:35,105 INFO L429 AbstractCegarLoop]: === Iteration 5 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:36:35,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:36:35,106 INFO L82 PathProgramCache]: Analyzing trace with hash 143250926, now seen corresponding path program 1 times [2020-10-26 03:36:35,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:36:35,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974407038] [2020-10-26 03:36:35,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:36:35,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:35,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:36:35,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:35,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-26 03:36:35,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:35,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:36:35,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974407038] [2020-10-26 03:36:35,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:36:35,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 03:36:35,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812062102] [2020-10-26 03:36:35,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 03:36:35,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:36:35,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 03:36:35,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 03:36:35,218 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 5 states. [2020-10-26 03:36:35,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:36:35,368 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2020-10-26 03:36:35,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 03:36:35,369 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-26 03:36:35,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:36:35,370 INFO L225 Difference]: With dead ends: 46 [2020-10-26 03:36:35,370 INFO L226 Difference]: Without dead ends: 43 [2020-10-26 03:36:35,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-26 03:36:35,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-26 03:36:35,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2020-10-26 03:36:35,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-26 03:36:35,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2020-10-26 03:36:35,378 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 15 [2020-10-26 03:36:35,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:36:35,379 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2020-10-26 03:36:35,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 03:36:35,379 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2020-10-26 03:36:35,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-26 03:36:35,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:36:35,380 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:36:35,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 03:36:35,381 INFO L429 AbstractCegarLoop]: === Iteration 6 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:36:35,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:36:35,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1623425863, now seen corresponding path program 1 times [2020-10-26 03:36:35,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:36:35,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093648366] [2020-10-26 03:36:35,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:36:35,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:35,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:36:35,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:35,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:36:35,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093648366] [2020-10-26 03:36:35,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051631868] [2020-10-26 03:36:35,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-10-26 03:36:35,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:35,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-26 03:36:35,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:36:35,541 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:36:35,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 03:36:35,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 4 [2020-10-26 03:36:35,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734948302] [2020-10-26 03:36:35,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 03:36:35,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:36:35,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 03:36:35,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 03:36:35,551 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 5 states. [2020-10-26 03:36:35,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:36:35,681 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2020-10-26 03:36:35,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 03:36:35,682 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-26 03:36:35,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:36:35,683 INFO L225 Difference]: With dead ends: 52 [2020-10-26 03:36:35,683 INFO L226 Difference]: Without dead ends: 52 [2020-10-26 03:36:35,683 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 03:36:35,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-26 03:36:35,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 45. [2020-10-26 03:36:35,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-26 03:36:35,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-26 03:36:35,689 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 16 [2020-10-26 03:36:35,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:36:35,690 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-26 03:36:35,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 03:36:35,690 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-26 03:36:35,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-26 03:36:35,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:36:35,691 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:36:35,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-10-26 03:36:35,892 INFO L429 AbstractCegarLoop]: === Iteration 7 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:36:35,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:36:35,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1213405753, now seen corresponding path program 1 times [2020-10-26 03:36:35,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:36:35,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305356864] [2020-10-26 03:36:35,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:36:35,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:35,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:36:35,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:36,000 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-26 03:36:36,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305356864] [2020-10-26 03:36:36,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:36:36,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 03:36:36,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805210277] [2020-10-26 03:36:36,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 03:36:36,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:36:36,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 03:36:36,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-26 03:36:36,004 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 7 states. [2020-10-26 03:36:36,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:36:36,191 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2020-10-26 03:36:36,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 03:36:36,192 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2020-10-26 03:36:36,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:36:36,193 INFO L225 Difference]: With dead ends: 44 [2020-10-26 03:36:36,193 INFO L226 Difference]: Without dead ends: 44 [2020-10-26 03:36:36,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-26 03:36:36,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-26 03:36:36,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-10-26 03:36:36,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-26 03:36:36,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2020-10-26 03:36:36,199 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 17 [2020-10-26 03:36:36,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:36:36,199 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2020-10-26 03:36:36,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 03:36:36,200 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2020-10-26 03:36:36,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-26 03:36:36,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:36:36,201 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:36:36,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 03:36:36,201 INFO L429 AbstractCegarLoop]: === Iteration 8 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:36:36,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:36:36,202 INFO L82 PathProgramCache]: Analyzing trace with hash 2121234189, now seen corresponding path program 1 times [2020-10-26 03:36:36,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:36:36,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269607117] [2020-10-26 03:36:36,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:36:36,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:36,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:36:36,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:36,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-26 03:36:36,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:36,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:36:36,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269607117] [2020-10-26 03:36:36,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431413527] [2020-10-26 03:36:36,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-10-26 03:36:36,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:36,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-26 03:36:36,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:36:36,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:36:36,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 03:36:36,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2020-10-26 03:36:36,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119093663] [2020-10-26 03:36:36,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 03:36:36,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:36:36,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 03:36:36,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-26 03:36:36,497 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 9 states. [2020-10-26 03:36:36,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:36:36,781 INFO L93 Difference]: Finished difference Result 50 states and 53 transitions. [2020-10-26 03:36:36,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 03:36:36,782 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2020-10-26 03:36:36,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:36:36,784 INFO L225 Difference]: With dead ends: 50 [2020-10-26 03:36:36,784 INFO L226 Difference]: Without dead ends: 47 [2020-10-26 03:36:36,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 03:36:36,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-26 03:36:36,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2020-10-26 03:36:36,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-26 03:36:36,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2020-10-26 03:36:36,790 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 20 [2020-10-26 03:36:36,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:36:36,790 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2020-10-26 03:36:36,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 03:36:36,790 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2020-10-26 03:36:36,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-26 03:36:36,791 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:36:36,791 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:36:36,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:36:36,993 INFO L429 AbstractCegarLoop]: === Iteration 9 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:36:36,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:36:36,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1483602424, now seen corresponding path program 2 times [2020-10-26 03:36:36,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:36:36,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567846265] [2020-10-26 03:36:36,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:36:37,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:37,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:36:37,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:37,067 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:36:37,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567846265] [2020-10-26 03:36:37,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621635678] [2020-10-26 03:36:37,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-10-26 03:36:37,113 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-26 03:36:37,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 03:36:37,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-26 03:36:37,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:36:37,205 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-26 03:36:37,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 03:36:37,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2020-10-26 03:36:37,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813362971] [2020-10-26 03:36:37,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 03:36:37,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:36:37,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 03:36:37,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-26 03:36:37,208 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand 11 states. [2020-10-26 03:36:37,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:36:37,537 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2020-10-26 03:36:37,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 03:36:37,539 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-10-26 03:36:37,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:36:37,540 INFO L225 Difference]: With dead ends: 58 [2020-10-26 03:36:37,540 INFO L226 Difference]: Without dead ends: 58 [2020-10-26 03:36:37,541 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2020-10-26 03:36:37,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-26 03:36:37,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 42. [2020-10-26 03:36:37,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-26 03:36:37,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2020-10-26 03:36:37,554 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 21 [2020-10-26 03:36:37,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:36:37,555 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2020-10-26 03:36:37,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 03:36:37,555 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2020-10-26 03:36:37,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-26 03:36:37,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:36:37,556 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:36:37,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:36:37,757 INFO L429 AbstractCegarLoop]: === Iteration 10 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:36:37,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:36:37,758 INFO L82 PathProgramCache]: Analyzing trace with hash -523456178, now seen corresponding path program 2 times [2020-10-26 03:36:37,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:36:37,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239918878] [2020-10-26 03:36:37,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:36:37,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:37,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:36:37,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:37,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-26 03:36:37,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:38,003 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:36:38,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239918878] [2020-10-26 03:36:38,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781853884] [2020-10-26 03:36:38,004 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-10-26 03:36:38,060 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-26 03:36:38,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 03:36:38,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-26 03:36:38,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:36:38,140 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-10-26 03:36:38,140 INFO L384 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 1 case distinctions, treesize of input 9 treesize of output 11 [2020-10-26 03:36:38,142 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:36:38,150 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:36:38,152 INFO L545 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. [2020-10-26 03:36:38,152 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:11 [2020-10-26 03:36:38,272 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-26 03:36:38,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-26 03:36:38,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2020-10-26 03:36:38,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382950332] [2020-10-26 03:36:38,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:36:38,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:36:38,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:36:38,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-26 03:36:38,274 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand 4 states. [2020-10-26 03:36:38,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:36:38,321 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2020-10-26 03:36:38,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:36:38,322 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-26 03:36:38,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:36:38,323 INFO L225 Difference]: With dead ends: 40 [2020-10-26 03:36:38,323 INFO L226 Difference]: Without dead ends: 40 [2020-10-26 03:36:38,324 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-26 03:36:38,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-26 03:36:38,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-10-26 03:36:38,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-26 03:36:38,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2020-10-26 03:36:38,328 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 25 [2020-10-26 03:36:38,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:36:38,328 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2020-10-26 03:36:38,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:36:38,328 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2020-10-26 03:36:38,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-26 03:36:38,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:36:38,329 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:36:38,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:36:38,540 INFO L429 AbstractCegarLoop]: === Iteration 11 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:36:38,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:36:38,541 INFO L82 PathProgramCache]: Analyzing trace with hash -523456177, now seen corresponding path program 1 times [2020-10-26 03:36:38,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:36:38,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062566915] [2020-10-26 03:36:38,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:36:38,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:38,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:36:38,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:38,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-26 03:36:38,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:38,738 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:36:38,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062566915] [2020-10-26 03:36:38,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002287999] [2020-10-26 03:36:38,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-10-26 03:36:38,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:38,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-26 03:36:38,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:36:38,925 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:36:38,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 03:36:38,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2020-10-26 03:36:38,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646446307] [2020-10-26 03:36:38,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 03:36:38,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:36:38,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 03:36:38,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-26 03:36:38,927 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand 11 states. [2020-10-26 03:36:39,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:36:39,266 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2020-10-26 03:36:39,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 03:36:39,266 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-26 03:36:39,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:36:39,267 INFO L225 Difference]: With dead ends: 52 [2020-10-26 03:36:39,267 INFO L226 Difference]: Without dead ends: 49 [2020-10-26 03:36:39,268 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-26 03:36:39,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-26 03:36:39,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2020-10-26 03:36:39,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-26 03:36:39,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2020-10-26 03:36:39,273 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 25 [2020-10-26 03:36:39,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:36:39,274 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2020-10-26 03:36:39,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 03:36:39,274 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2020-10-26 03:36:39,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-26 03:36:39,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:36:39,275 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:36:39,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-10-26 03:36:39,486 INFO L429 AbstractCegarLoop]: === Iteration 12 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:36:39,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:36:39,487 INFO L82 PathProgramCache]: Analyzing trace with hash -661735506, now seen corresponding path program 2 times [2020-10-26 03:36:39,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:36:39,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352814400] [2020-10-26 03:36:39,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:36:39,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:39,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:36:39,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:39,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-26 03:36:39,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:39,737 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:36:39,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352814400] [2020-10-26 03:36:39,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692752737] [2020-10-26 03:36:39,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-10-26 03:36:39,777 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-26 03:36:39,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 03:36:39,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-26 03:36:39,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:36:39,801 INFO L441 ElimStorePlain]: Different costs {0=[|v_#length_12|], 1=[|v_#valid_25|]} [2020-10-26 03:36:39,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-26 03:36:39,808 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2020-10-26 03:36:39,808 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:36:39,819 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:36:39,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-26 03:36:39,827 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2020-10-26 03:36:39,829 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-26 03:36:39,837 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:36:39,839 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-26 03:36:39,839 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:17 [2020-10-26 03:36:39,968 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-26 03:36:39,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-26 03:36:39,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2020-10-26 03:36:39,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096270292] [2020-10-26 03:36:39,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:36:39,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:36:39,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:36:39,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-26 03:36:39,971 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 4 states. [2020-10-26 03:36:40,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:36:40,025 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2020-10-26 03:36:40,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:36:40,026 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-26 03:36:40,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:36:40,027 INFO L225 Difference]: With dead ends: 50 [2020-10-26 03:36:40,028 INFO L226 Difference]: Without dead ends: 50 [2020-10-26 03:36:40,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-26 03:36:40,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-26 03:36:40,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2020-10-26 03:36:40,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-26 03:36:40,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-10-26 03:36:40,033 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 30 [2020-10-26 03:36:40,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:36:40,033 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-10-26 03:36:40,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:36:40,033 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-10-26 03:36:40,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-26 03:36:40,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:36:40,035 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:36:40,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:36:40,247 INFO L429 AbstractCegarLoop]: === Iteration 13 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:36:40,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:36:40,248 INFO L82 PathProgramCache]: Analyzing trace with hash 494772831, now seen corresponding path program 1 times [2020-10-26 03:36:40,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:36:40,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286592189] [2020-10-26 03:36:40,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:36:40,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:40,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:36:40,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:40,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-26 03:36:40,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:40,334 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-26 03:36:40,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286592189] [2020-10-26 03:36:40,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899571110] [2020-10-26 03:36:40,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:36:40,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:40,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-26 03:36:40,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:36:40,524 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:36:40,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 03:36:40,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2020-10-26 03:36:40,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816213440] [2020-10-26 03:36:40,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 03:36:40,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:36:40,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 03:36:40,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-26 03:36:40,528 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 10 states. [2020-10-26 03:36:40,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:36:40,846 INFO L93 Difference]: Finished difference Result 84 states and 89 transitions. [2020-10-26 03:36:40,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 03:36:40,846 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-10-26 03:36:40,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:36:40,847 INFO L225 Difference]: With dead ends: 84 [2020-10-26 03:36:40,847 INFO L226 Difference]: Without dead ends: 81 [2020-10-26 03:36:40,848 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-26 03:36:40,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-26 03:36:40,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 60. [2020-10-26 03:36:40,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-26 03:36:40,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2020-10-26 03:36:40,858 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 36 [2020-10-26 03:36:40,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:36:40,858 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2020-10-26 03:36:40,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 03:36:40,859 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2020-10-26 03:36:40,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-26 03:36:40,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:36:40,864 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:36:41,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:36:41,078 INFO L429 AbstractCegarLoop]: === Iteration 14 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:36:41,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:36:41,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1980281553, now seen corresponding path program 1 times [2020-10-26 03:36:41,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:36:41,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657812962] [2020-10-26 03:36:41,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:36:41,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:41,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:36:41,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:41,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-26 03:36:41,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:41,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-26 03:36:41,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:41,348 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 2 proven. 126 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-10-26 03:36:41,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657812962] [2020-10-26 03:36:41,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657601400] [2020-10-26 03:36:41,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:36:41,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:41,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-26 03:36:41,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:36:41,620 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 95 proven. 34 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-26 03:36:41,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 03:36:41,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2020-10-26 03:36:41,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759649085] [2020-10-26 03:36:41,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-26 03:36:41,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:36:41,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-26 03:36:41,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-26 03:36:41,628 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand 15 states. [2020-10-26 03:36:42,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:36:42,148 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2020-10-26 03:36:42,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 03:36:42,149 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 66 [2020-10-26 03:36:42,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:36:42,150 INFO L225 Difference]: With dead ends: 72 [2020-10-26 03:36:42,150 INFO L226 Difference]: Without dead ends: 69 [2020-10-26 03:36:42,150 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2020-10-26 03:36:42,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-26 03:36:42,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 65. [2020-10-26 03:36:42,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-26 03:36:42,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 71 transitions. [2020-10-26 03:36:42,162 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 71 transitions. Word has length 66 [2020-10-26 03:36:42,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:36:42,163 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 71 transitions. [2020-10-26 03:36:42,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-26 03:36:42,164 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 71 transitions. [2020-10-26 03:36:42,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-26 03:36:42,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:36:42,169 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:36:42,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-10-26 03:36:42,382 INFO L429 AbstractCegarLoop]: === Iteration 15 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:36:42,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:36:42,383 INFO L82 PathProgramCache]: Analyzing trace with hash -453177461, now seen corresponding path program 2 times [2020-10-26 03:36:42,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:36:42,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83564138] [2020-10-26 03:36:42,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:36:42,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:42,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:36:42,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:42,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-26 03:36:42,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:42,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-26 03:36:42,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:42,756 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 2 proven. 194 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-10-26 03:36:42,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83564138] [2020-10-26 03:36:42,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362954514] [2020-10-26 03:36:42,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:36:42,828 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-26 03:36:42,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 03:36:42,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-26 03:36:42,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:36:43,050 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 142 proven. 55 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-26 03:36:43,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 03:36:43,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2020-10-26 03:36:43,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060540245] [2020-10-26 03:36:43,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-26 03:36:43,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:36:43,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-26 03:36:43,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2020-10-26 03:36:43,053 INFO L87 Difference]: Start difference. First operand 65 states and 71 transitions. Second operand 17 states. [2020-10-26 03:36:43,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:36:43,695 INFO L93 Difference]: Finished difference Result 77 states and 83 transitions. [2020-10-26 03:36:43,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 03:36:43,696 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 76 [2020-10-26 03:36:43,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:36:43,697 INFO L225 Difference]: With dead ends: 77 [2020-10-26 03:36:43,697 INFO L226 Difference]: Without dead ends: 74 [2020-10-26 03:36:43,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=150, Invalid=402, Unknown=0, NotChecked=0, Total=552 [2020-10-26 03:36:43,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-26 03:36:43,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 70. [2020-10-26 03:36:43,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-26 03:36:43,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 76 transitions. [2020-10-26 03:36:43,709 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 76 transitions. Word has length 76 [2020-10-26 03:36:43,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:36:43,709 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 76 transitions. [2020-10-26 03:36:43,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-26 03:36:43,709 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 76 transitions. [2020-10-26 03:36:43,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-26 03:36:43,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:36:43,713 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:36:43,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-26 03:36:43,914 INFO L429 AbstractCegarLoop]: === Iteration 16 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:36:43,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:36:43,915 INFO L82 PathProgramCache]: Analyzing trace with hash -197968815, now seen corresponding path program 3 times [2020-10-26 03:36:43,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:36:43,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856061049] [2020-10-26 03:36:43,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:36:43,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:43,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:36:43,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:43,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-26 03:36:43,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:44,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-26 03:36:44,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:44,333 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 2 proven. 277 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-26 03:36:44,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856061049] [2020-10-26 03:36:44,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474267866] [2020-10-26 03:36:44,334 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:36:44,396 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-26 03:36:44,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 03:36:44,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-26 03:36:44,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:36:44,415 INFO L441 ElimStorePlain]: Different costs {0=[|v_#length_13|], 1=[|v_#valid_26|]} [2020-10-26 03:36:44,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-26 03:36:44,422 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2020-10-26 03:36:44,422 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:36:44,432 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:36:44,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-26 03:36:44,439 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2020-10-26 03:36:44,440 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-26 03:36:44,449 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:36:44,450 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:36:44,450 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:17 [2020-10-26 03:36:44,774 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 359 trivial. 0 not checked. [2020-10-26 03:36:44,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 03:36:44,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5] total 15 [2020-10-26 03:36:44,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839768655] [2020-10-26 03:36:44,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-26 03:36:44,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:36:44,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-26 03:36:44,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-10-26 03:36:44,777 INFO L87 Difference]: Start difference. First operand 70 states and 76 transitions. Second operand 15 states. [2020-10-26 03:36:45,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:36:45,570 INFO L93 Difference]: Finished difference Result 87 states and 94 transitions. [2020-10-26 03:36:45,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-26 03:36:45,570 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 86 [2020-10-26 03:36:45,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:36:45,571 INFO L225 Difference]: With dead ends: 87 [2020-10-26 03:36:45,572 INFO L226 Difference]: Without dead ends: 84 [2020-10-26 03:36:45,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 85 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=160, Invalid=392, Unknown=0, NotChecked=0, Total=552 [2020-10-26 03:36:45,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-26 03:36:45,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 78. [2020-10-26 03:36:45,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-26 03:36:45,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 85 transitions. [2020-10-26 03:36:45,581 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 85 transitions. Word has length 86 [2020-10-26 03:36:45,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:36:45,581 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 85 transitions. [2020-10-26 03:36:45,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-26 03:36:45,581 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 85 transitions. [2020-10-26 03:36:45,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-26 03:36:45,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:36:45,591 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:36:45,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-26 03:36:45,804 INFO L429 AbstractCegarLoop]: === Iteration 17 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:36:45,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:36:45,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1122221700, now seen corresponding path program 2 times [2020-10-26 03:36:45,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:36:45,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744715103] [2020-10-26 03:36:45,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:36:45,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:45,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:36:45,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:45,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-26 03:36:45,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:45,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-26 03:36:45,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:45,985 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 491 trivial. 0 not checked. [2020-10-26 03:36:45,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744715103] [2020-10-26 03:36:45,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929057199] [2020-10-26 03:36:45,993 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:36:46,039 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-26 03:36:46,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 03:36:46,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-26 03:36:46,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:36:46,046 INFO L441 ElimStorePlain]: Different costs {0=[|v_#length_14|], 1=[|v_#valid_27|]} [2020-10-26 03:36:46,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-26 03:36:46,051 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2020-10-26 03:36:46,052 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:36:46,064 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:36:46,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-26 03:36:46,079 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2020-10-26 03:36:46,080 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-26 03:36:46,087 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:36:46,088 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-26 03:36:46,089 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:21, output treesize:14 [2020-10-26 03:36:46,378 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2020-10-26 03:36:46,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-26 03:36:46,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2020-10-26 03:36:46,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481610022] [2020-10-26 03:36:46,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 03:36:46,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:36:46,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 03:36:46,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-26 03:36:46,381 INFO L87 Difference]: Start difference. First operand 78 states and 85 transitions. Second operand 5 states. [2020-10-26 03:36:46,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:36:46,454 INFO L93 Difference]: Finished difference Result 79 states and 85 transitions. [2020-10-26 03:36:46,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 03:36:46,454 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-26 03:36:46,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:36:46,456 INFO L225 Difference]: With dead ends: 79 [2020-10-26 03:36:46,456 INFO L226 Difference]: Without dead ends: 79 [2020-10-26 03:36:46,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 101 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-26 03:36:46,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-26 03:36:46,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2020-10-26 03:36:46,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-26 03:36:46,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 84 transitions. [2020-10-26 03:36:46,461 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 84 transitions. Word has length 102 [2020-10-26 03:36:46,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:36:46,461 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 84 transitions. [2020-10-26 03:36:46,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 03:36:46,462 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 84 transitions. [2020-10-26 03:36:46,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-26 03:36:46,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:36:46,463 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:36:46,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-26 03:36:46,674 INFO L429 AbstractCegarLoop]: === Iteration 18 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:36:46,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:36:46,675 INFO L82 PathProgramCache]: Analyzing trace with hash -81231572, now seen corresponding path program 1 times [2020-10-26 03:36:46,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:36:46,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126422231] [2020-10-26 03:36:46,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:36:46,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:46,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:36:46,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:46,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-26 03:36:46,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:47,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-26 03:36:47,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:47,078 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 3 proven. 375 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-10-26 03:36:47,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126422231] [2020-10-26 03:36:47,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627005344] [2020-10-26 03:36:47,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:36:47,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:47,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-26 03:36:47,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:36:47,414 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 267 proven. 112 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-10-26 03:36:47,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 03:36:47,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 21 [2020-10-26 03:36:47,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604680715] [2020-10-26 03:36:47,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-26 03:36:47,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:36:47,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-26 03:36:47,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2020-10-26 03:36:47,417 INFO L87 Difference]: Start difference. First operand 78 states and 84 transitions. Second operand 21 states. [2020-10-26 03:36:48,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:36:48,182 INFO L93 Difference]: Finished difference Result 90 states and 96 transitions. [2020-10-26 03:36:48,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 03:36:48,185 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 105 [2020-10-26 03:36:48,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:36:48,186 INFO L225 Difference]: With dead ends: 90 [2020-10-26 03:36:48,186 INFO L226 Difference]: Without dead ends: 87 [2020-10-26 03:36:48,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=235, Invalid=635, Unknown=0, NotChecked=0, Total=870 [2020-10-26 03:36:48,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-26 03:36:48,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 83. [2020-10-26 03:36:48,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-26 03:36:48,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 89 transitions. [2020-10-26 03:36:48,192 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 89 transitions. Word has length 105 [2020-10-26 03:36:48,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:36:48,193 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 89 transitions. [2020-10-26 03:36:48,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-26 03:36:48,193 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 89 transitions. [2020-10-26 03:36:48,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-26 03:36:48,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:36:48,195 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:36:48,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-26 03:36:48,396 INFO L429 AbstractCegarLoop]: === Iteration 19 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:36:48,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:36:48,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1970017626, now seen corresponding path program 2 times [2020-10-26 03:36:48,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:36:48,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528370353] [2020-10-26 03:36:48,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:36:48,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:48,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:36:48,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:48,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-26 03:36:48,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:48,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-26 03:36:48,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:48,915 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 3 proven. 488 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-10-26 03:36:48,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528370353] [2020-10-26 03:36:48,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481767185] [2020-10-26 03:36:48,916 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:36:48,969 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-26 03:36:48,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 03:36:48,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-26 03:36:48,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:36:49,047 INFO L350 Elim1Store]: treesize reduction 14, result has 50.0 percent of original size [2020-10-26 03:36:49,048 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 29 [2020-10-26 03:36:49,049 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:36:49,056 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:36:49,058 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-26 03:36:49,059 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2020-10-26 03:36:49,304 INFO L350 Elim1Store]: treesize reduction 14, result has 50.0 percent of original size [2020-10-26 03:36:49,305 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 29 [2020-10-26 03:36:49,306 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:36:49,318 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:36:49,319 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-26 03:36:49,320 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2020-10-26 03:36:49,618 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 645 trivial. 0 not checked. [2020-10-26 03:36:49,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-26 03:36:49,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 17 [2020-10-26 03:36:49,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137837245] [2020-10-26 03:36:49,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 03:36:49,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:36:49,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 03:36:49,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2020-10-26 03:36:49,620 INFO L87 Difference]: Start difference. First operand 83 states and 89 transitions. Second operand 6 states. [2020-10-26 03:36:49,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:36:49,754 INFO L93 Difference]: Finished difference Result 82 states and 88 transitions. [2020-10-26 03:36:49,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 03:36:49,755 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 115 [2020-10-26 03:36:49,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:36:49,756 INFO L225 Difference]: With dead ends: 82 [2020-10-26 03:36:49,756 INFO L226 Difference]: Without dead ends: 79 [2020-10-26 03:36:49,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 113 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2020-10-26 03:36:49,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-26 03:36:49,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2020-10-26 03:36:49,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-26 03:36:49,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2020-10-26 03:36:49,761 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 115 [2020-10-26 03:36:49,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:36:49,762 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2020-10-26 03:36:49,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 03:36:49,762 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2020-10-26 03:36:49,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-26 03:36:49,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:36:49,764 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:36:49,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:36:49,977 INFO L429 AbstractCegarLoop]: === Iteration 20 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:36:49,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:36:49,978 INFO L82 PathProgramCache]: Analyzing trace with hash -940912475, now seen corresponding path program 1 times [2020-10-26 03:36:49,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:36:49,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463383395] [2020-10-26 03:36:49,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:36:50,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:50,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:36:50,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:50,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-26 03:36:50,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:50,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-26 03:36:50,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:50,500 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 3 proven. 488 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-10-26 03:36:50,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463383395] [2020-10-26 03:36:50,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375144715] [2020-10-26 03:36:50,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:36:50,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:50,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-26 03:36:50,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:36:50,882 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 344 proven. 148 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-10-26 03:36:50,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 03:36:50,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 23 [2020-10-26 03:36:50,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535931872] [2020-10-26 03:36:50,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-26 03:36:50,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:36:50,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-26 03:36:50,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2020-10-26 03:36:50,885 INFO L87 Difference]: Start difference. First operand 76 states and 80 transitions. Second operand 23 states. [2020-10-26 03:36:51,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:36:51,727 INFO L93 Difference]: Finished difference Result 88 states and 92 transitions. [2020-10-26 03:36:51,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 03:36:51,727 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 116 [2020-10-26 03:36:51,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:36:51,729 INFO L225 Difference]: With dead ends: 88 [2020-10-26 03:36:51,729 INFO L226 Difference]: Without dead ends: 85 [2020-10-26 03:36:51,730 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=285, Invalid=771, Unknown=0, NotChecked=0, Total=1056 [2020-10-26 03:36:51,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-26 03:36:51,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 81. [2020-10-26 03:36:51,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-26 03:36:51,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-10-26 03:36:51,734 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 116 [2020-10-26 03:36:51,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:36:51,735 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-10-26 03:36:51,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-26 03:36:51,735 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-10-26 03:36:51,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-26 03:36:51,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:36:51,737 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:36:51,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:36:51,944 INFO L429 AbstractCegarLoop]: === Iteration 21 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:36:51,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:36:51,945 INFO L82 PathProgramCache]: Analyzing trace with hash -431416353, now seen corresponding path program 2 times [2020-10-26 03:36:51,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:36:51,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943165534] [2020-10-26 03:36:51,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:36:51,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:51,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:36:51,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:51,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-26 03:36:52,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:52,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-26 03:36:52,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:52,559 INFO L134 CoverageAnalysis]: Checked inductivity of 816 backedges. 3 proven. 616 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2020-10-26 03:36:52,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943165534] [2020-10-26 03:36:52,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412400941] [2020-10-26 03:36:52,560 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:36:52,647 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-26 03:36:52,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 03:36:52,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-26 03:36:52,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:36:52,993 INFO L134 CoverageAnalysis]: Checked inductivity of 816 backedges. 431 proven. 189 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2020-10-26 03:36:52,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 03:36:52,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 25 [2020-10-26 03:36:52,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020094938] [2020-10-26 03:36:52,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-26 03:36:52,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:36:52,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-26 03:36:52,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2020-10-26 03:36:52,997 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 25 states. [2020-10-26 03:36:54,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:36:54,017 INFO L93 Difference]: Finished difference Result 93 states and 97 transitions. [2020-10-26 03:36:54,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-26 03:36:54,018 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 126 [2020-10-26 03:36:54,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:36:54,019 INFO L225 Difference]: With dead ends: 93 [2020-10-26 03:36:54,019 INFO L226 Difference]: Without dead ends: 90 [2020-10-26 03:36:54,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=340, Invalid=920, Unknown=0, NotChecked=0, Total=1260 [2020-10-26 03:36:54,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-26 03:36:54,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 86. [2020-10-26 03:36:54,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-26 03:36:54,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 90 transitions. [2020-10-26 03:36:54,025 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 90 transitions. Word has length 126 [2020-10-26 03:36:54,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:36:54,025 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 90 transitions. [2020-10-26 03:36:54,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-26 03:36:54,026 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 90 transitions. [2020-10-26 03:36:54,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-26 03:36:54,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:36:54,028 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:36:54,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-10-26 03:36:54,240 INFO L429 AbstractCegarLoop]: === Iteration 22 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:36:54,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:36:54,241 INFO L82 PathProgramCache]: Analyzing trace with hash -138765787, now seen corresponding path program 3 times [2020-10-26 03:36:54,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:36:54,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783356657] [2020-10-26 03:36:54,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:36:54,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:54,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:36:54,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:54,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-26 03:36:54,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:54,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-26 03:36:54,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:54,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 3 proven. 759 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2020-10-26 03:36:54,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783356657] [2020-10-26 03:36:54,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189549699] [2020-10-26 03:36:54,882 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:36:54,945 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-26 03:36:54,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 03:36:54,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-26 03:36:54,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:36:55,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 999 trivial. 0 not checked. [2020-10-26 03:36:55,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 03:36:55,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 7] total 21 [2020-10-26 03:36:55,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601833400] [2020-10-26 03:36:55,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-26 03:36:55,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:36:55,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-26 03:36:55,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2020-10-26 03:36:55,166 INFO L87 Difference]: Start difference. First operand 86 states and 90 transitions. Second operand 21 states. [2020-10-26 03:36:56,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:36:56,138 INFO L93 Difference]: Finished difference Result 109 states and 114 transitions. [2020-10-26 03:36:56,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-26 03:36:56,143 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 136 [2020-10-26 03:36:56,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:36:56,145 INFO L225 Difference]: With dead ends: 109 [2020-10-26 03:36:56,145 INFO L226 Difference]: Without dead ends: 106 [2020-10-26 03:36:56,145 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=302, Invalid=888, Unknown=0, NotChecked=0, Total=1190 [2020-10-26 03:36:56,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-26 03:36:56,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 95. [2020-10-26 03:36:56,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-26 03:36:56,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2020-10-26 03:36:56,154 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 136 [2020-10-26 03:36:56,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:36:56,155 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2020-10-26 03:36:56,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-26 03:36:56,155 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2020-10-26 03:36:56,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-26 03:36:56,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:36:56,159 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:36:56,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:36:56,361 INFO L429 AbstractCegarLoop]: === Iteration 23 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:36:56,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:36:56,361 INFO L82 PathProgramCache]: Analyzing trace with hash 16497858, now seen corresponding path program 4 times [2020-10-26 03:36:56,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:36:56,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696010064] [2020-10-26 03:36:56,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:36:56,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:56,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:36:56,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:56,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-26 03:36:56,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:56,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-26 03:36:56,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:56,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 3 proven. 917 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2020-10-26 03:36:56,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696010064] [2020-10-26 03:36:56,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072795930] [2020-10-26 03:36:56,994 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:36:57,130 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-26 03:36:57,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 03:36:57,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-26 03:36:57,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:36:57,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 635 proven. 286 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2020-10-26 03:36:57,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 03:36:57,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 29 [2020-10-26 03:36:57,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455437803] [2020-10-26 03:36:57,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-26 03:36:57,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:36:57,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-26 03:36:57,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=624, Unknown=0, NotChecked=0, Total=812 [2020-10-26 03:36:57,603 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand 29 states. [2020-10-26 03:36:58,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:36:58,799 INFO L93 Difference]: Finished difference Result 107 states and 111 transitions. [2020-10-26 03:36:58,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-26 03:36:58,799 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 150 [2020-10-26 03:36:58,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:36:58,801 INFO L225 Difference]: With dead ends: 107 [2020-10-26 03:36:58,801 INFO L226 Difference]: Without dead ends: 104 [2020-10-26 03:36:58,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=465, Invalid=1257, Unknown=0, NotChecked=0, Total=1722 [2020-10-26 03:36:58,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-26 03:36:58,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 100. [2020-10-26 03:36:58,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-26 03:36:58,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 104 transitions. [2020-10-26 03:36:58,809 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 104 transitions. Word has length 150 [2020-10-26 03:36:58,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:36:58,809 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 104 transitions. [2020-10-26 03:36:58,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-26 03:36:58,809 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 104 transitions. [2020-10-26 03:36:58,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-26 03:36:58,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:36:58,811 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:36:59,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-10-26 03:36:59,012 INFO L429 AbstractCegarLoop]: === Iteration 24 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:36:59,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:36:59,013 INFO L82 PathProgramCache]: Analyzing trace with hash -846233464, now seen corresponding path program 5 times [2020-10-26 03:36:59,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:36:59,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954513814] [2020-10-26 03:36:59,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:36:59,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:59,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:36:59,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:59,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-26 03:36:59,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:59,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-26 03:36:59,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:36:59,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1449 backedges. 3 proven. 1090 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2020-10-26 03:36:59,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954513814] [2020-10-26 03:36:59,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119926212] [2020-10-26 03:36:59,777 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:36:59,911 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2020-10-26 03:36:59,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 03:36:59,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-26 03:36:59,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:37:00,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1449 backedges. 752 proven. 342 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2020-10-26 03:37:00,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 03:37:00,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 31 [2020-10-26 03:37:00,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878806320] [2020-10-26 03:37:00,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-26 03:37:00,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:37:00,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-26 03:37:00,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=714, Unknown=0, NotChecked=0, Total=930 [2020-10-26 03:37:00,424 INFO L87 Difference]: Start difference. First operand 100 states and 104 transitions. Second operand 31 states. [2020-10-26 03:37:01,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:37:01,744 INFO L93 Difference]: Finished difference Result 112 states and 116 transitions. [2020-10-26 03:37:01,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-26 03:37:01,749 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 160 [2020-10-26 03:37:01,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:37:01,750 INFO L225 Difference]: With dead ends: 112 [2020-10-26 03:37:01,750 INFO L226 Difference]: Without dead ends: 109 [2020-10-26 03:37:01,752 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=535, Invalid=1445, Unknown=0, NotChecked=0, Total=1980 [2020-10-26 03:37:01,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-26 03:37:01,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 105. [2020-10-26 03:37:01,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-26 03:37:01,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 109 transitions. [2020-10-26 03:37:01,760 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 109 transitions. Word has length 160 [2020-10-26 03:37:01,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:37:01,760 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 109 transitions. [2020-10-26 03:37:01,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-26 03:37:01,761 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 109 transitions. [2020-10-26 03:37:01,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-26 03:37:01,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:37:01,763 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:37:01,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-10-26 03:37:01,975 INFO L429 AbstractCegarLoop]: === Iteration 25 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:37:01,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:37:01,976 INFO L82 PathProgramCache]: Analyzing trace with hash 609725890, now seen corresponding path program 6 times [2020-10-26 03:37:01,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:37:01,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115961549] [2020-10-26 03:37:01,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:37:02,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:37:02,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:37:02,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:37:02,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-26 03:37:02,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:37:02,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-26 03:37:02,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:37:02,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1698 backedges. 3 proven. 1278 refuted. 0 times theorem prover too weak. 417 trivial. 0 not checked. [2020-10-26 03:37:02,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115961549] [2020-10-26 03:37:02,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544659671] [2020-10-26 03:37:02,858 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:37:02,924 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-26 03:37:02,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 03:37:02,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-26 03:37:02,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:37:02,934 INFO L441 ElimStorePlain]: Different costs {0=[|v_#length_15|], 1=[|v_#valid_30|]} [2020-10-26 03:37:02,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-26 03:37:02,939 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2020-10-26 03:37:02,939 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:37:02,948 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:37:02,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-26 03:37:02,955 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2020-10-26 03:37:02,956 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-26 03:37:02,962 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:37:02,963 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-26 03:37:02,963 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:21, output treesize:14 [2020-10-26 03:37:03,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1698 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1692 trivial. 0 not checked. [2020-10-26 03:37:03,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-26 03:37:03,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [18] total 23 [2020-10-26 03:37:03,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54934882] [2020-10-26 03:37:03,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 03:37:03,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:37:03,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 03:37:03,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2020-10-26 03:37:03,493 INFO L87 Difference]: Start difference. First operand 105 states and 109 transitions. Second operand 7 states. [2020-10-26 03:37:03,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:37:03,570 INFO L93 Difference]: Finished difference Result 103 states and 107 transitions. [2020-10-26 03:37:03,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 03:37:03,571 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 170 [2020-10-26 03:37:03,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:37:03,572 INFO L225 Difference]: With dead ends: 103 [2020-10-26 03:37:03,572 INFO L226 Difference]: Without dead ends: 0 [2020-10-26 03:37:03,573 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 167 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2020-10-26 03:37:03,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-26 03:37:03,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-26 03:37:03,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-26 03:37:03,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-26 03:37:03,574 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 170 [2020-10-26 03:37:03,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:37:03,574 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 03:37:03,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 03:37:03,574 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-26 03:37:03,574 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-26 03:37:03,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-10-26 03:37:03,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 03:37:03 BoogieIcfgContainer [2020-10-26 03:37:03,781 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 03:37:03,782 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 03:37:03,782 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 03:37:03,782 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 03:37:03,783 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:36:33" (3/4) ... [2020-10-26 03:37:03,787 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-26 03:37:03,795 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-10-26 03:37:03,795 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure foo [2020-10-26 03:37:03,796 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-10-26 03:37:03,801 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2020-10-26 03:37:03,801 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-10-26 03:37:03,801 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-10-26 03:37:03,802 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 03:37:03,846 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-26 03:37:03,846 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 03:37:03,847 INFO L168 Benchmark]: Toolchain (without parser) took 31248.15 ms. Allocated memory was 44.0 MB in the beginning and 176.2 MB in the end (delta: 132.1 MB). Free memory was 21.0 MB in the beginning and 77.3 MB in the end (delta: -56.2 MB). Peak memory consumption was 78.3 MB. Max. memory is 16.1 GB. [2020-10-26 03:37:03,849 INFO L168 Benchmark]: CDTParser took 0.78 ms. Allocated memory is still 44.0 MB. Free memory was 22.3 MB in the beginning and 22.2 MB in the end (delta: 33.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 03:37:03,849 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.45 ms. Allocated memory was 44.0 MB in the beginning and 56.6 MB in the end (delta: 12.6 MB). Free memory was 20.4 MB in the beginning and 33.2 MB in the end (delta: -12.7 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2020-10-26 03:37:03,851 INFO L168 Benchmark]: Boogie Preprocessor took 43.62 ms. Allocated memory is still 56.6 MB. Free memory was 33.2 MB in the beginning and 31.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 03:37:03,852 INFO L168 Benchmark]: RCFGBuilder took 432.98 ms. Allocated memory is still 56.6 MB. Free memory was 31.6 MB in the beginning and 30.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. [2020-10-26 03:37:03,854 INFO L168 Benchmark]: TraceAbstraction took 30377.30 ms. Allocated memory was 56.6 MB in the beginning and 176.2 MB in the end (delta: 119.5 MB). Free memory was 29.9 MB in the beginning and 80.0 MB in the end (delta: -50.0 MB). Peak memory consumption was 69.7 MB. Max. memory is 16.1 GB. [2020-10-26 03:37:03,855 INFO L168 Benchmark]: Witness Printer took 64.39 ms. Allocated memory is still 176.2 MB. Free memory was 80.0 MB in the beginning and 77.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 03:37:03,862 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.78 ms. Allocated memory is still 44.0 MB. Free memory was 22.3 MB in the beginning and 22.2 MB in the end (delta: 33.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 317.45 ms. Allocated memory was 44.0 MB in the beginning and 56.6 MB in the end (delta: 12.6 MB). Free memory was 20.4 MB in the beginning and 33.2 MB in the end (delta: -12.7 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.62 ms. Allocated memory is still 56.6 MB. Free memory was 33.2 MB in the beginning and 31.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 432.98 ms. Allocated memory is still 56.6 MB. Free memory was 31.6 MB in the beginning and 30.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 30377.30 ms. Allocated memory was 56.6 MB in the beginning and 176.2 MB in the end (delta: 119.5 MB). Free memory was 29.9 MB in the beginning and 80.0 MB in the end (delta: -50.0 MB). Peak memory consumption was 69.7 MB. Max. memory is 16.1 GB. * Witness Printer took 64.39 ms. Allocated memory is still 176.2 MB. Free memory was 80.0 MB in the beginning and 77.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 16]: array index is always in bounds For all program executions holds that array index is always in bounds at this location - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 29]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 29]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 26]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 26]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 40 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 30.2s, OverallIterations: 25, TraceHistogramMax: 26, AutomataDifference: 11.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 621 SDtfs, 1816 SDslu, 3405 SDs, 0 SdLazy, 3377 SolverSat, 267 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1980 GetRequests, 1548 SyntacticMatches, 14 SemanticMatches, 418 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1718 ImplicationChecksByTransitivity, 14.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105occurred in iteration=24, 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, 25 MinimizatonAttempts, 132 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 12.3s InterpolantComputationTime, 3239 NumberOfCodeBlocks, 2689 NumberOfCodeBlocksAsserted, 64 NumberOfCheckSat, 3195 ConstructedInterpolants, 462 QuantifiedInterpolants, 2351984 SizeOfPredicates, 31 NumberOfNonLiveVariables, 3127 ConjunctsInSsa, 168 ConjunctsInUnsatCore, 44 InterpolantComputations, 11 PerfectInterpolantSequences, 10777/18637 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...