./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/ArraysWithLenghtAtDeclaration.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9a8b2e8d 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_1.3.100.v20150511-1540.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/ArraysWithLenghtAtDeclaration.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 56b28f59847d63942ec468b0c95f39e5b8c0763a ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 05:59:55,568 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 05:59:55,571 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 05:59:55,615 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 05:59:55,615 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 05:59:55,628 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 05:59:55,630 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 05:59:55,633 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 05:59:55,635 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 05:59:55,637 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 05:59:55,639 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 05:59:55,641 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 05:59:55,642 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 05:59:55,648 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 05:59:55,649 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 05:59:55,651 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 05:59:55,653 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 05:59:55,656 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 05:59:55,659 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 05:59:55,665 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 05:59:55,667 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 05:59:55,668 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 05:59:55,671 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 05:59:55,672 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 05:59:55,677 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 05:59:55,677 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 05:59:55,677 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 05:59:55,679 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 05:59:55,680 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 05:59:55,681 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 05:59:55,681 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 05:59:55,682 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 05:59:55,683 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 05:59:55,684 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 05:59:55,685 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 05:59:55,686 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 05:59:55,686 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 05:59:55,686 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 05:59:55,687 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 05:59:55,688 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 05:59:55,689 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 05:59:55,690 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-20 05:59:55,736 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 05:59:55,737 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 05:59:55,738 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 05:59:55,738 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 05:59:55,738 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 05:59:55,739 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 05:59:55,739 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 05:59:55,739 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 05:59:55,739 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 05:59:55,740 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 05:59:55,740 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 05:59:55,740 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 05:59:55,740 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 05:59:55,740 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-20 05:59:55,740 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 05:59:55,741 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 05:59:55,741 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 05:59:55,741 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 05:59:55,741 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 05:59:55,742 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 05:59:55,742 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 05:59:55,742 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 05:59:55,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 05:59:55,742 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 05:59:55,743 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 05:59:55,743 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 05:59:55,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 05:59:55,743 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 05:59:55,743 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> 56b28f59847d63942ec468b0c95f39e5b8c0763a [2020-10-20 05:59:55,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 05:59:55,991 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 05:59:55,995 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 05:59:55,997 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 05:59:55,997 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 05:59:55,998 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/ArraysWithLenghtAtDeclaration.c [2020-10-20 05:59:56,074 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97f257861/25363db1af494529ad3a8c1aa453c54c/FLAG0fbe5930d [2020-10-20 05:59:56,566 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 05:59:56,568 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/ArraysWithLenghtAtDeclaration.c [2020-10-20 05:59:56,576 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97f257861/25363db1af494529ad3a8c1aa453c54c/FLAG0fbe5930d [2020-10-20 05:59:56,894 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97f257861/25363db1af494529ad3a8c1aa453c54c [2020-10-20 05:59:56,897 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 05:59:56,902 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 05:59:56,903 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 05:59:56,904 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 05:59:56,907 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 05:59:56,908 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:59:56" (1/1) ... [2020-10-20 05:59:56,911 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a783c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:56, skipping insertion in model container [2020-10-20 05:59:56,911 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:59:56" (1/1) ... [2020-10-20 05:59:56,918 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 05:59:56,936 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 05:59:57,315 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 05:59:57,326 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 05:59:57,351 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 05:59:57,369 INFO L208 MainTranslator]: Completed translation [2020-10-20 05:59:57,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:57 WrapperNode [2020-10-20 05:59:57,370 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 05:59:57,372 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 05:59:57,372 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 05:59:57,372 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 05:59:57,387 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:57" (1/1) ... [2020-10-20 05:59:57,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:57" (1/1) ... [2020-10-20 05:59:57,398 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:57" (1/1) ... [2020-10-20 05:59:57,400 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:57" (1/1) ... [2020-10-20 05:59:57,419 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:57" (1/1) ... [2020-10-20 05:59:57,426 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:57" (1/1) ... [2020-10-20 05:59:57,434 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:57" (1/1) ... [2020-10-20 05:59:57,438 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 05:59:57,445 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 05:59:57,446 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 05:59:57,446 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 05:59:57,447 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:57" (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 [2020-10-20 05:59:57,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 05:59:57,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 05:59:57,523 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-10-20 05:59:57,524 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 05:59:57,524 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-10-20 05:59:57,525 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 05:59:57,525 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 05:59:57,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 05:59:57,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 05:59:57,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 05:59:57,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 05:59:57,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 05:59:57,885 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 05:59:57,886 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-20 05:59:57,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:59:57 BoogieIcfgContainer [2020-10-20 05:59:57,888 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 05:59:57,889 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 05:59:57,890 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 05:59:57,893 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 05:59:57,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 05:59:56" (1/3) ... [2020-10-20 05:59:57,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e1b9f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:59:57, skipping insertion in model container [2020-10-20 05:59:57,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:57" (2/3) ... [2020-10-20 05:59:57,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e1b9f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:59:57, skipping insertion in model container [2020-10-20 05:59:57,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:59:57" (3/3) ... [2020-10-20 05:59:57,897 INFO L111 eAbstractionObserver]: Analyzing ICFG ArraysWithLenghtAtDeclaration.c [2020-10-20 05:59:57,909 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 05:59:57,917 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-10-20 05:59:57,931 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-10-20 05:59:57,951 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 05:59:57,952 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 05:59:57,952 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 05:59:57,952 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 05:59:57,953 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 05:59:57,953 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 05:59:57,953 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 05:59:57,953 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 05:59:57,968 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-10-20 05:59:57,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 05:59:57,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:57,977 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:59:57,977 INFO L429 AbstractCegarLoop]: === Iteration 1 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:59:57,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:59:57,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1909189377, now seen corresponding path program 1 times [2020-10-20 05:59:57,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:59:57,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033697564] [2020-10-20 05:59:57,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:59:58,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:58,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:59:58,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:58,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:59:58,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033697564] [2020-10-20 05:59:58,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:59:58,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 05:59:58,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676647226] [2020-10-20 05:59:58,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 05:59:58,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:59:58,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 05:59:58,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 05:59:58,243 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 4 states. [2020-10-20 05:59:58,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:59:58,425 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2020-10-20 05:59:58,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 05:59:58,427 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-20 05:59:58,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:59:58,437 INFO L225 Difference]: With dead ends: 58 [2020-10-20 05:59:58,437 INFO L226 Difference]: Without dead ends: 54 [2020-10-20 05:59:58,439 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 [2020-10-20 05:59:58,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-20 05:59:58,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 39. [2020-10-20 05:59:58,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-20 05:59:58,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-10-20 05:59:58,481 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 10 [2020-10-20 05:59:58,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:59:58,481 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-10-20 05:59:58,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 05:59:58,482 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-10-20 05:59:58,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 05:59:58,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:58,483 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:59:58,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 05:59:58,483 INFO L429 AbstractCegarLoop]: === Iteration 2 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:59:58,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:59:58,484 INFO L82 PathProgramCache]: Analyzing trace with hash -941983064, now seen corresponding path program 1 times [2020-10-20 05:59:58,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:59:58,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102641525] [2020-10-20 05:59:58,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:59:58,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:58,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:59:58,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:58,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:59:58,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102641525] [2020-10-20 05:59:58,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:59:58,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 05:59:58,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796075266] [2020-10-20 05:59:58,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 05:59:58,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:59:58,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 05:59:58,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 05:59:58,572 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 4 states. [2020-10-20 05:59:58,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:59:58,682 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2020-10-20 05:59:58,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 05:59:58,683 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-20 05:59:58,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:59:58,686 INFO L225 Difference]: With dead ends: 49 [2020-10-20 05:59:58,686 INFO L226 Difference]: Without dead ends: 49 [2020-10-20 05:59:58,687 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 [2020-10-20 05:59:58,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-20 05:59:58,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 41. [2020-10-20 05:59:58,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-20 05:59:58,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-20 05:59:58,694 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 11 [2020-10-20 05:59:58,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:59:58,694 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-20 05:59:58,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 05:59:58,695 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-20 05:59:58,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 05:59:58,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:58,696 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:59:58,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 05:59:58,696 INFO L429 AbstractCegarLoop]: === Iteration 3 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:59:58,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:59:58,697 INFO L82 PathProgramCache]: Analyzing trace with hash 863296133, now seen corresponding path program 1 times [2020-10-20 05:59:58,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:59:58,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135801307] [2020-10-20 05:59:58,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:59:58,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:58,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:59:58,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:58,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:59:58,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135801307] [2020-10-20 05:59:58,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:59:58,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 05:59:58,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412139066] [2020-10-20 05:59:58,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 05:59:58,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:59:58,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 05:59:58,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 05:59:58,772 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 6 states. [2020-10-20 05:59:58,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:59:58,908 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2020-10-20 05:59:58,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 05:59:58,908 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-10-20 05:59:58,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:59:58,909 INFO L225 Difference]: With dead ends: 40 [2020-10-20 05:59:58,909 INFO L226 Difference]: Without dead ends: 40 [2020-10-20 05:59:58,910 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 [2020-10-20 05:59:58,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-20 05:59:58,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-10-20 05:59:58,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-20 05:59:58,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-10-20 05:59:58,916 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 12 [2020-10-20 05:59:58,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:59:58,916 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-10-20 05:59:58,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 05:59:58,916 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-10-20 05:59:58,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 05:59:58,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:58,917 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:59:58,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 05:59:58,917 INFO L429 AbstractCegarLoop]: === Iteration 4 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:59:58,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:59:58,918 INFO L82 PathProgramCache]: Analyzing trace with hash 863296134, now seen corresponding path program 1 times [2020-10-20 05:59:58,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:59:58,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306377837] [2020-10-20 05:59:58,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:59:58,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:58,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:59:58,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:59,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:59:59,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306377837] [2020-10-20 05:59:59,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:59:59,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 05:59:59,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031702203] [2020-10-20 05:59:59,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 05:59:59,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:59:59,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 05:59:59,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 05:59:59,005 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 6 states. [2020-10-20 05:59:59,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:59:59,163 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2020-10-20 05:59:59,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 05:59:59,163 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-10-20 05:59:59,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:59:59,165 INFO L225 Difference]: With dead ends: 46 [2020-10-20 05:59:59,165 INFO L226 Difference]: Without dead ends: 46 [2020-10-20 05:59:59,165 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 [2020-10-20 05:59:59,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-20 05:59:59,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2020-10-20 05:59:59,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-20 05:59:59,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-20 05:59:59,171 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 12 [2020-10-20 05:59:59,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:59:59,171 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-20 05:59:59,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 05:59:59,171 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-20 05:59:59,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 05:59:59,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:59,172 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:59:59,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 05:59:59,173 INFO L429 AbstractCegarLoop]: === Iteration 5 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:59:59,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:59:59,173 INFO L82 PathProgramCache]: Analyzing trace with hash 143250926, now seen corresponding path program 1 times [2020-10-20 05:59:59,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:59:59,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668104965] [2020-10-20 05:59:59,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:59:59,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:59,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:59:59,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:59,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 05:59:59,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:59,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:59:59,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668104965] [2020-10-20 05:59:59,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:59:59,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 05:59:59,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110133286] [2020-10-20 05:59:59,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 05:59:59,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:59:59,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 05:59:59,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 05:59:59,245 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 6 states. [2020-10-20 05:59:59,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:59:59,403 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2020-10-20 05:59:59,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 05:59:59,403 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-20 05:59:59,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:59:59,404 INFO L225 Difference]: With dead ends: 61 [2020-10-20 05:59:59,405 INFO L226 Difference]: Without dead ends: 61 [2020-10-20 05:59:59,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-20 05:59:59,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-20 05:59:59,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 45. [2020-10-20 05:59:59,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-20 05:59:59,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2020-10-20 05:59:59,412 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 15 [2020-10-20 05:59:59,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:59:59,412 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2020-10-20 05:59:59,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 05:59:59,413 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2020-10-20 05:59:59,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 05:59:59,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:59,413 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:59:59,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 05:59:59,414 INFO L429 AbstractCegarLoop]: === Iteration 6 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:59:59,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:59:59,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1623425863, now seen corresponding path program 1 times [2020-10-20 05:59:59,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:59:59,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838165645] [2020-10-20 05:59:59,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:59:59,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:59,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:59:59,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:59,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:59:59,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838165645] [2020-10-20 05:59:59,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580963398] [2020-10-20 05:59:59,484 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 [2020-10-20 05:59:59,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:59,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 05:59:59,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:59:59,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:59:59,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-20 05:59:59,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2020-10-20 05:59:59,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599699031] [2020-10-20 05:59:59,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 05:59:59,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:59:59,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 05:59:59,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-20 05:59:59,700 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand 6 states. [2020-10-20 05:59:59,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:59:59,834 INFO L93 Difference]: Finished difference Result 72 states and 76 transitions. [2020-10-20 05:59:59,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 05:59:59,835 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-20 05:59:59,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:59:59,836 INFO L225 Difference]: With dead ends: 72 [2020-10-20 05:59:59,838 INFO L226 Difference]: Without dead ends: 69 [2020-10-20 05:59:59,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-20 05:59:59,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-20 05:59:59,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 52. [2020-10-20 05:59:59,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-20 05:59:59,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2020-10-20 05:59:59,849 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 16 [2020-10-20 05:59:59,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:59:59,850 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2020-10-20 05:59:59,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 05:59:59,850 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2020-10-20 05:59:59,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-20 05:59:59,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:59,851 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] [2020-10-20 06:00:00,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-10-20 06:00:00,066 INFO L429 AbstractCegarLoop]: === Iteration 7 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 06:00:00,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:00:00,067 INFO L82 PathProgramCache]: Analyzing trace with hash 2121234189, now seen corresponding path program 1 times [2020-10-20 06:00:00,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:00:00,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999961631] [2020-10-20 06:00:00,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:00:00,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:00,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:00:00,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:00,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 06:00:00,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:00,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 06:00:00,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999961631] [2020-10-20 06:00:00,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:00:00,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:00:00,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449268465] [2020-10-20 06:00:00,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:00:00,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:00:00,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:00:00,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:00:00,167 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 4 states. [2020-10-20 06:00:00,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:00:00,238 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2020-10-20 06:00:00,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:00:00,239 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-20 06:00:00,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:00:00,240 INFO L225 Difference]: With dead ends: 50 [2020-10-20 06:00:00,240 INFO L226 Difference]: Without dead ends: 50 [2020-10-20 06:00:00,241 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:00:00,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-20 06:00:00,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-10-20 06:00:00,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-20 06:00:00,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-10-20 06:00:00,247 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 20 [2020-10-20 06:00:00,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:00:00,248 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-10-20 06:00:00,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:00:00,248 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-10-20 06:00:00,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-20 06:00:00,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:00:00,249 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] [2020-10-20 06:00:00,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 06:00:00,249 INFO L429 AbstractCegarLoop]: === Iteration 8 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 06:00:00,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:00:00,249 INFO L82 PathProgramCache]: Analyzing trace with hash 2121234190, now seen corresponding path program 1 times [2020-10-20 06:00:00,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:00:00,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332223704] [2020-10-20 06:00:00,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:00:00,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:00,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:00:00,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:00,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 06:00:00,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:00,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 06:00:00,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332223704] [2020-10-20 06:00:00,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:00:00,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:00:00,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349259822] [2020-10-20 06:00:00,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:00:00,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:00:00,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:00:00,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:00:00,374 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 4 states. [2020-10-20 06:00:00,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:00:00,473 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2020-10-20 06:00:00,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:00:00,473 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-20 06:00:00,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:00:00,475 INFO L225 Difference]: With dead ends: 54 [2020-10-20 06:00:00,475 INFO L226 Difference]: Without dead ends: 54 [2020-10-20 06:00:00,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:00:00,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-20 06:00:00,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2020-10-20 06:00:00,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-20 06:00:00,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2020-10-20 06:00:00,481 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 20 [2020-10-20 06:00:00,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:00:00,481 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2020-10-20 06:00:00,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:00:00,482 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2020-10-20 06:00:00,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-20 06:00:00,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:00:00,483 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:00:00,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 06:00:00,483 INFO L429 AbstractCegarLoop]: === Iteration 9 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 06:00:00,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:00:00,484 INFO L82 PathProgramCache]: Analyzing trace with hash 2011781567, now seen corresponding path program 1 times [2020-10-20 06:00:00,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:00:00,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719351410] [2020-10-20 06:00:00,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:00:00,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:00,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:00:00,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:00,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 06:00:00,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:00,535 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 06:00:00,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719351410] [2020-10-20 06:00:00,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756325128] [2020-10-20 06:00:00,536 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 [2020-10-20 06:00:00,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:00,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-20 06:00:00,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:00:00,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 06:00:00,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:00:00,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2020-10-20 06:00:00,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830263593] [2020-10-20 06:00:00,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:00:00,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:00:00,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:00:00,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:00:00,600 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 6 states. [2020-10-20 06:00:00,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:00:00,699 INFO L93 Difference]: Finished difference Result 76 states and 81 transitions. [2020-10-20 06:00:00,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:00:00,700 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-10-20 06:00:00,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:00:00,701 INFO L225 Difference]: With dead ends: 76 [2020-10-20 06:00:00,701 INFO L226 Difference]: Without dead ends: 76 [2020-10-20 06:00:00,702 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:00:00,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-20 06:00:00,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 59. [2020-10-20 06:00:00,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-20 06:00:00,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 65 transitions. [2020-10-20 06:00:00,708 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 65 transitions. Word has length 26 [2020-10-20 06:00:00,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:00:00,708 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 65 transitions. [2020-10-20 06:00:00,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:00:00,709 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 65 transitions. [2020-10-20 06:00:00,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-20 06:00:00,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:00:00,710 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:00:00,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:00:00,920 INFO L429 AbstractCegarLoop]: === Iteration 10 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 06:00:00,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:00:00,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1143280978, now seen corresponding path program 1 times [2020-10-20 06:00:00,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:00:00,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147706590] [2020-10-20 06:00:00,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:00:00,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:00,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:00:00,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:00,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 06:00:00,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:01,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-20 06:00:01,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:01,042 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-20 06:00:01,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147706590] [2020-10-20 06:00:01,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323791392] [2020-10-20 06:00:01,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-10-20 06:00:01,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:01,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 06:00:01,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:00:01,185 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-20 06:00:01,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-20 06:00:01,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 9 [2020-10-20 06:00:01,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262393663] [2020-10-20 06:00:01,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:00:01,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:00:01,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:00:01,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:00:01,187 INFO L87 Difference]: Start difference. First operand 59 states and 65 transitions. Second operand 6 states. [2020-10-20 06:00:01,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:00:01,299 INFO L93 Difference]: Finished difference Result 68 states and 71 transitions. [2020-10-20 06:00:01,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:00:01,299 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-10-20 06:00:01,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:00:01,300 INFO L225 Difference]: With dead ends: 68 [2020-10-20 06:00:01,301 INFO L226 Difference]: Without dead ends: 65 [2020-10-20 06:00:01,301 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:00:01,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-20 06:00:01,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 59. [2020-10-20 06:00:01,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-20 06:00:01,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 64 transitions. [2020-10-20 06:00:01,306 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 64 transitions. Word has length 31 [2020-10-20 06:00:01,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:00:01,306 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 64 transitions. [2020-10-20 06:00:01,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:00:01,306 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 64 transitions. [2020-10-20 06:00:01,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-20 06:00:01,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:00:01,307 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:00:01,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-10-20 06:00:01,518 INFO L429 AbstractCegarLoop]: === Iteration 11 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 06:00:01,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:00:01,518 INFO L82 PathProgramCache]: Analyzing trace with hash -1735380924, now seen corresponding path program 1 times [2020-10-20 06:00:01,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:00:01,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835084256] [2020-10-20 06:00:01,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:00:01,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:01,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:00:01,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:01,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 06:00:01,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:01,567 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-20 06:00:01,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835084256] [2020-10-20 06:00:01,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804074630] [2020-10-20 06:00:01,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-10-20 06:00:01,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:01,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:00:01,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:00:01,640 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-20 06:00:01,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:00:01,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 4 [2020-10-20 06:00:01,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498602125] [2020-10-20 06:00:01,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:00:01,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:00:01,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:00:01,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:00:01,641 INFO L87 Difference]: Start difference. First operand 59 states and 64 transitions. Second operand 5 states. [2020-10-20 06:00:01,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:00:01,739 INFO L93 Difference]: Finished difference Result 70 states and 76 transitions. [2020-10-20 06:00:01,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:00:01,740 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2020-10-20 06:00:01,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:00:01,741 INFO L225 Difference]: With dead ends: 70 [2020-10-20 06:00:01,741 INFO L226 Difference]: Without dead ends: 70 [2020-10-20 06:00:01,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:00:01,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-20 06:00:01,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 63. [2020-10-20 06:00:01,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-20 06:00:01,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2020-10-20 06:00:01,746 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 32 [2020-10-20 06:00:01,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:00:01,747 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2020-10-20 06:00:01,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:00:01,747 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2020-10-20 06:00:01,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-20 06:00:01,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:00:01,748 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:00:01,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:00:01,960 INFO L429 AbstractCegarLoop]: === Iteration 12 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 06:00:01,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:00:01,961 INFO L82 PathProgramCache]: Analyzing trace with hash 2037766250, now seen corresponding path program 1 times [2020-10-20 06:00:01,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:00:01,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294695334] [2020-10-20 06:00:01,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:00:01,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:02,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:00:02,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:02,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 06:00:02,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:02,038 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-20 06:00:02,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294695334] [2020-10-20 06:00:02,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:00:02,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 06:00:02,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831227659] [2020-10-20 06:00:02,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 06:00:02,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:00:02,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 06:00:02,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:00:02,040 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand 7 states. [2020-10-20 06:00:02,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:00:02,175 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2020-10-20 06:00:02,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 06:00:02,176 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-10-20 06:00:02,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:00:02,177 INFO L225 Difference]: With dead ends: 62 [2020-10-20 06:00:02,177 INFO L226 Difference]: Without dead ends: 62 [2020-10-20 06:00:02,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:00:02,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-20 06:00:02,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-10-20 06:00:02,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-20 06:00:02,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions. [2020-10-20 06:00:02,181 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 33 [2020-10-20 06:00:02,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:00:02,181 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 68 transitions. [2020-10-20 06:00:02,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 06:00:02,182 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions. [2020-10-20 06:00:02,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-20 06:00:02,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:00:02,183 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:00:02,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-20 06:00:02,183 INFO L429 AbstractCegarLoop]: === Iteration 13 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 06:00:02,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:00:02,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1978883467, now seen corresponding path program 2 times [2020-10-20 06:00:02,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:00:02,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974876987] [2020-10-20 06:00:02,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:00:02,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:02,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:00:02,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:02,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 06:00:02,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:02,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-20 06:00:02,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:02,269 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-20 06:00:02,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974876987] [2020-10-20 06:00:02,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754396329] [2020-10-20 06:00:02,270 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 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 [2020-10-20 06:00:02,316 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 06:00:02,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:00:02,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 06:00:02,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:00:02,397 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-20 06:00:02,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:00:02,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2020-10-20 06:00:02,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068989730] [2020-10-20 06:00:02,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-20 06:00:02,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:00:02,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-20 06:00:02,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-20 06:00:02,400 INFO L87 Difference]: Start difference. First operand 62 states and 68 transitions. Second operand 11 states. [2020-10-20 06:00:02,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:00:02,668 INFO L93 Difference]: Finished difference Result 72 states and 75 transitions. [2020-10-20 06:00:02,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 06:00:02,668 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 36 [2020-10-20 06:00:02,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:00:02,669 INFO L225 Difference]: With dead ends: 72 [2020-10-20 06:00:02,669 INFO L226 Difference]: Without dead ends: 69 [2020-10-20 06:00:02,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2020-10-20 06:00:02,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-20 06:00:02,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 62. [2020-10-20 06:00:02,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-20 06:00:02,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 67 transitions. [2020-10-20 06:00:02,674 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 67 transitions. Word has length 36 [2020-10-20 06:00:02,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:00:02,675 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 67 transitions. [2020-10-20 06:00:02,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-20 06:00:02,675 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 67 transitions. [2020-10-20 06:00:02,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-20 06:00:02,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:00:02,676 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:00:02,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-10-20 06:00:02,887 INFO L429 AbstractCegarLoop]: === Iteration 14 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 06:00:02,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:00:02,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1601507541, now seen corresponding path program 2 times [2020-10-20 06:00:02,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:00:02,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619235727] [2020-10-20 06:00:02,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:00:02,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:02,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:00:02,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:02,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 06:00:02,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:02,969 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 06:00:02,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619235727] [2020-10-20 06:00:02,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137125629] [2020-10-20 06:00:02,970 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 [2020-10-20 06:00:03,018 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 06:00:03,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:00:03,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 06:00:03,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:00:03,101 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 06:00:03,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:00:03,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 13 [2020-10-20 06:00:03,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520154837] [2020-10-20 06:00:03,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-20 06:00:03,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:00:03,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-20 06:00:03,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-10-20 06:00:03,103 INFO L87 Difference]: Start difference. First operand 62 states and 67 transitions. Second operand 13 states. [2020-10-20 06:00:03,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:00:03,408 INFO L93 Difference]: Finished difference Result 94 states and 97 transitions. [2020-10-20 06:00:03,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-20 06:00:03,408 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 37 [2020-10-20 06:00:03,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:00:03,409 INFO L225 Difference]: With dead ends: 94 [2020-10-20 06:00:03,409 INFO L226 Difference]: Without dead ends: 94 [2020-10-20 06:00:03,409 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2020-10-20 06:00:03,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-20 06:00:03,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 78. [2020-10-20 06:00:03,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-20 06:00:03,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 83 transitions. [2020-10-20 06:00:03,413 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 83 transitions. Word has length 37 [2020-10-20 06:00:03,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:00:03,413 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 83 transitions. [2020-10-20 06:00:03,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-20 06:00:03,413 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 83 transitions. [2020-10-20 06:00:03,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-20 06:00:03,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:00:03,415 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:00:03,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:00:03,625 INFO L429 AbstractCegarLoop]: === Iteration 15 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 06:00:03,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:00:03,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1930842354, now seen corresponding path program 3 times [2020-10-20 06:00:03,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:00:03,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611272434] [2020-10-20 06:00:03,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:00:03,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:03,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:00:03,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:03,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 06:00:03,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:03,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-20 06:00:03,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:03,711 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-20 06:00:03,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611272434] [2020-10-20 06:00:03,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212035259] [2020-10-20 06:00:03,712 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 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 [2020-10-20 06:00:03,759 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-20 06:00:03,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:00:03,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-20 06:00:03,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:00:03,790 INFO L441 ElimStorePlain]: Different costs {0=[|v_#length_12|], 1=[|v_#valid_24|]} [2020-10-20 06:00:03,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:00:03,812 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 [2020-10-20 06:00:03,813 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:00:03,827 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:00:03,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:00:03,839 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 [2020-10-20 06:00:03,840 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:00:03,847 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:00:03,848 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:00:03,848 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:17 [2020-10-20 06:00:04,063 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-20 06:00:04,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:00:04,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2020-10-20 06:00:04,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904449239] [2020-10-20 06:00:04,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 06:00:04,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:00:04,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 06:00:04,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:00:04,066 INFO L87 Difference]: Start difference. First operand 78 states and 83 transitions. Second operand 9 states. [2020-10-20 06:00:04,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:00:04,246 INFO L93 Difference]: Finished difference Result 82 states and 87 transitions. [2020-10-20 06:00:04,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 06:00:04,247 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 41 [2020-10-20 06:00:04,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:00:04,248 INFO L225 Difference]: With dead ends: 82 [2020-10-20 06:00:04,248 INFO L226 Difference]: Without dead ends: 82 [2020-10-20 06:00:04,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:00:04,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-20 06:00:04,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2020-10-20 06:00:04,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-20 06:00:04,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 85 transitions. [2020-10-20 06:00:04,253 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 85 transitions. Word has length 41 [2020-10-20 06:00:04,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:00:04,254 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 85 transitions. [2020-10-20 06:00:04,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 06:00:04,254 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 85 transitions. [2020-10-20 06:00:04,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-20 06:00:04,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:00:04,256 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:00:04,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-20 06:00:04,466 INFO L429 AbstractCegarLoop]: === Iteration 16 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 06:00:04,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:00:04,467 INFO L82 PathProgramCache]: Analyzing trace with hash 492189859, now seen corresponding path program 2 times [2020-10-20 06:00:04,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:00:04,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779469911] [2020-10-20 06:00:04,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:00:04,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:04,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:00:04,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:04,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 06:00:04,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:04,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-20 06:00:04,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:04,555 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-20 06:00:04,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779469911] [2020-10-20 06:00:04,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585253369] [2020-10-20 06:00:04,557 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-10-20 06:00:04,583 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-20 06:00:04,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:00:04,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 06:00:04,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:00:04,596 INFO L441 ElimStorePlain]: Different costs {0=[|v_#length_13|], 1=[|v_#valid_25|]} [2020-10-20 06:00:04,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:00:04,601 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 [2020-10-20 06:00:04,601 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:00:04,609 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:00:04,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:00:04,613 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 [2020-10-20 06:00:04,615 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:00:04,621 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:00:04,622 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. [2020-10-20 06:00:04,622 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:21, output treesize:14 [2020-10-20 06:00:04,819 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-20 06:00:04,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-20 06:00:04,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2020-10-20 06:00:04,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58988430] [2020-10-20 06:00:04,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:00:04,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:00:04,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:00:04,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:00:04,826 INFO L87 Difference]: Start difference. First operand 80 states and 85 transitions. Second operand 5 states. [2020-10-20 06:00:04,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:00:04,920 INFO L93 Difference]: Finished difference Result 81 states and 85 transitions. [2020-10-20 06:00:04,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:00:04,921 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2020-10-20 06:00:04,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:00:04,922 INFO L225 Difference]: With dead ends: 81 [2020-10-20 06:00:04,922 INFO L226 Difference]: Without dead ends: 81 [2020-10-20 06:00:04,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 46 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:00:04,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-20 06:00:04,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2020-10-20 06:00:04,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-20 06:00:04,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 84 transitions. [2020-10-20 06:00:04,930 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 84 transitions. Word has length 47 [2020-10-20 06:00:04,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:00:04,931 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 84 transitions. [2020-10-20 06:00:04,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:00:04,931 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 84 transitions. [2020-10-20 06:00:04,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-20 06:00:04,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:00:04,932 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:00:05,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-20 06:00:05,147 INFO L429 AbstractCegarLoop]: === Iteration 17 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 06:00:05,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:00:05,148 INFO L82 PathProgramCache]: Analyzing trace with hash -190258011, now seen corresponding path program 1 times [2020-10-20 06:00:05,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:00:05,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102857166] [2020-10-20 06:00:05,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:00:05,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:05,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:00:05,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:05,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 06:00:05,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:05,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-20 06:00:05,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:05,210 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-20 06:00:05,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102857166] [2020-10-20 06:00:05,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69473320] [2020-10-20 06:00:05,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-10-20 06:00:05,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:05,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 06:00:05,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:00:05,289 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-20 06:00:05,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:00:05,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2020-10-20 06:00:05,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313703251] [2020-10-20 06:00:05,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 06:00:05,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:00:05,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 06:00:05,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:00:05,291 INFO L87 Difference]: Start difference. First operand 80 states and 84 transitions. Second operand 7 states. [2020-10-20 06:00:05,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:00:05,412 INFO L93 Difference]: Finished difference Result 107 states and 111 transitions. [2020-10-20 06:00:05,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:00:05,413 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2020-10-20 06:00:05,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:00:05,414 INFO L225 Difference]: With dead ends: 107 [2020-10-20 06:00:05,414 INFO L226 Difference]: Without dead ends: 107 [2020-10-20 06:00:05,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:00:05,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-20 06:00:05,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 87. [2020-10-20 06:00:05,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-20 06:00:05,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 93 transitions. [2020-10-20 06:00:05,425 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 93 transitions. Word has length 50 [2020-10-20 06:00:05,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:00:05,426 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 93 transitions. [2020-10-20 06:00:05,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 06:00:05,426 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 93 transitions. [2020-10-20 06:00:05,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-20 06:00:05,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:00:05,427 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:00:05,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-20 06:00:05,630 INFO L429 AbstractCegarLoop]: === Iteration 18 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 06:00:05,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:00:05,631 INFO L82 PathProgramCache]: Analyzing trace with hash -2025940537, now seen corresponding path program 3 times [2020-10-20 06:00:05,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:00:05,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90463992] [2020-10-20 06:00:05,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:00:05,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:05,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:00:05,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:05,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 06:00:05,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:05,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-20 06:00:05,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:05,715 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 42 proven. 9 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-10-20 06:00:05,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90463992] [2020-10-20 06:00:05,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237204704] [2020-10-20 06:00:05,716 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 [2020-10-20 06:00:05,755 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-20 06:00:05,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:00:05,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 06:00:05,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:00:05,829 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-20 06:00:05,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:00:05,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 11 [2020-10-20 06:00:05,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251412153] [2020-10-20 06:00:05,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-20 06:00:05,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:00:05,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-20 06:00:05,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-20 06:00:05,831 INFO L87 Difference]: Start difference. First operand 87 states and 93 transitions. Second operand 12 states. [2020-10-20 06:00:06,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:00:06,141 INFO L93 Difference]: Finished difference Result 103 states and 110 transitions. [2020-10-20 06:00:06,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 06:00:06,141 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 58 [2020-10-20 06:00:06,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:00:06,142 INFO L225 Difference]: With dead ends: 103 [2020-10-20 06:00:06,142 INFO L226 Difference]: Without dead ends: 103 [2020-10-20 06:00:06,143 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2020-10-20 06:00:06,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-20 06:00:06,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 85. [2020-10-20 06:00:06,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-20 06:00:06,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 91 transitions. [2020-10-20 06:00:06,147 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 91 transitions. Word has length 58 [2020-10-20 06:00:06,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:00:06,148 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 91 transitions. [2020-10-20 06:00:06,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-20 06:00:06,148 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 91 transitions. [2020-10-20 06:00:06,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-20 06:00:06,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:00:06,149 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:00:06,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-20 06:00:06,361 INFO L429 AbstractCegarLoop]: === Iteration 19 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 06:00:06,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:00:06,362 INFO L82 PathProgramCache]: Analyzing trace with hash 746278286, now seen corresponding path program 4 times [2020-10-20 06:00:06,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:00:06,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885113195] [2020-10-20 06:00:06,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:00:06,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:06,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:00:06,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:06,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 06:00:06,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:06,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-20 06:00:06,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:06,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-20 06:00:06,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:06,477 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 51 proven. 15 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-20 06:00:06,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885113195] [2020-10-20 06:00:06,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618509509] [2020-10-20 06:00:06,478 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 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 [2020-10-20 06:00:06,522 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-20 06:00:06,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:00:06,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-20 06:00:06,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:00:06,631 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 42 proven. 42 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-20 06:00:06,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:00:06,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 16 [2020-10-20 06:00:06,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062694391] [2020-10-20 06:00:06,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-20 06:00:06,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:00:06,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-20 06:00:06,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2020-10-20 06:00:06,634 INFO L87 Difference]: Start difference. First operand 85 states and 91 transitions. Second operand 16 states. [2020-10-20 06:00:07,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:00:07,240 INFO L93 Difference]: Finished difference Result 104 states and 107 transitions. [2020-10-20 06:00:07,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-20 06:00:07,241 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 62 [2020-10-20 06:00:07,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:00:07,243 INFO L225 Difference]: With dead ends: 104 [2020-10-20 06:00:07,243 INFO L226 Difference]: Without dead ends: 101 [2020-10-20 06:00:07,244 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=145, Invalid=455, Unknown=0, NotChecked=0, Total=600 [2020-10-20 06:00:07,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-20 06:00:07,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 90. [2020-10-20 06:00:07,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-20 06:00:07,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 96 transitions. [2020-10-20 06:00:07,251 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 96 transitions. Word has length 62 [2020-10-20 06:00:07,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:00:07,252 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 96 transitions. [2020-10-20 06:00:07,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-20 06:00:07,252 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 96 transitions. [2020-10-20 06:00:07,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-20 06:00:07,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:00:07,252 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:00:07,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:00:07,454 INFO L429 AbstractCegarLoop]: === Iteration 20 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 06:00:07,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:00:07,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1227025103, now seen corresponding path program 5 times [2020-10-20 06:00:07,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:00:07,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384912723] [2020-10-20 06:00:07,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:00:07,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:07,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:00:07,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:07,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 06:00:07,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:07,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-20 06:00:07,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:07,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-20 06:00:07,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:07,601 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-20 06:00:07,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384912723] [2020-10-20 06:00:07,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994317209] [2020-10-20 06:00:07,602 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 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 [2020-10-20 06:00:07,665 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-20 06:00:07,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:00:07,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 06:00:07,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:00:07,679 INFO L441 ElimStorePlain]: Different costs {0=[|v_#length_14|], 1=[|v_#valid_26|]} [2020-10-20 06:00:07,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:00:07,691 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 [2020-10-20 06:00:07,691 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:00:07,700 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:00:07,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:00:07,704 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 [2020-10-20 06:00:07,705 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:00:07,712 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:00:07,713 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. [2020-10-20 06:00:07,714 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:17 [2020-10-20 06:00:07,926 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-20 06:00:07,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:00:07,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-20 06:00:07,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295223223] [2020-10-20 06:00:07,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 06:00:07,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:00:07,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 06:00:07,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:00:07,929 INFO L87 Difference]: Start difference. First operand 90 states and 96 transitions. Second operand 10 states. [2020-10-20 06:00:08,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:00:08,117 INFO L93 Difference]: Finished difference Result 95 states and 102 transitions. [2020-10-20 06:00:08,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 06:00:08,118 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2020-10-20 06:00:08,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:00:08,119 INFO L225 Difference]: With dead ends: 95 [2020-10-20 06:00:08,119 INFO L226 Difference]: Without dead ends: 95 [2020-10-20 06:00:08,119 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 66 SyntacticMatches, 5 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-20 06:00:08,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-20 06:00:08,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 93. [2020-10-20 06:00:08,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-20 06:00:08,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 100 transitions. [2020-10-20 06:00:08,124 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 100 transitions. Word has length 67 [2020-10-20 06:00:08,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:00:08,125 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 100 transitions. [2020-10-20 06:00:08,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 06:00:08,125 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 100 transitions. [2020-10-20 06:00:08,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-20 06:00:08,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:00:08,126 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:00:08,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:00:08,330 INFO L429 AbstractCegarLoop]: === Iteration 21 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 06:00:08,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:00:08,331 INFO L82 PathProgramCache]: Analyzing trace with hash -199290008, now seen corresponding path program 2 times [2020-10-20 06:00:08,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:00:08,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611858380] [2020-10-20 06:00:08,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:00:08,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:08,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:00:08,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:08,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 06:00:08,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:08,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-20 06:00:08,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:08,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-20 06:00:08,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:08,409 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-20 06:00:08,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611858380] [2020-10-20 06:00:08,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275468327] [2020-10-20 06:00:08,410 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 [2020-10-20 06:00:08,452 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-20 06:00:08,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:00:08,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-20 06:00:08,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:00:08,516 INFO L350 Elim1Store]: treesize reduction 14, result has 50.0 percent of original size [2020-10-20 06:00:08,516 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 [2020-10-20 06:00:08,518 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:00:08,523 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:00:08,525 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. [2020-10-20 06:00:08,526 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2020-10-20 06:00:08,608 INFO L350 Elim1Store]: treesize reduction 14, result has 50.0 percent of original size [2020-10-20 06:00:08,609 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 [2020-10-20 06:00:08,610 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:00:08,615 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:00:08,617 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. [2020-10-20 06:00:08,617 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2020-10-20 06:00:08,720 INFO L350 Elim1Store]: treesize reduction 14, result has 50.0 percent of original size [2020-10-20 06:00:08,720 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 [2020-10-20 06:00:08,721 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:00:08,727 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:00:08,729 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. [2020-10-20 06:00:08,729 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2020-10-20 06:00:08,884 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2020-10-20 06:00:08,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-20 06:00:08,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2020-10-20 06:00:08,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129773756] [2020-10-20 06:00:08,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:00:08,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:00:08,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:00:08,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-20 06:00:08,886 INFO L87 Difference]: Start difference. First operand 93 states and 100 transitions. Second operand 6 states. [2020-10-20 06:00:08,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:00:08,964 INFO L93 Difference]: Finished difference Result 92 states and 99 transitions. [2020-10-20 06:00:08,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:00:08,965 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-10-20 06:00:08,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:00:08,966 INFO L225 Difference]: With dead ends: 92 [2020-10-20 06:00:08,966 INFO L226 Difference]: Without dead ends: 89 [2020-10-20 06:00:08,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 75 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-20 06:00:08,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-20 06:00:08,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 82. [2020-10-20 06:00:08,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-20 06:00:08,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 85 transitions. [2020-10-20 06:00:08,971 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 85 transitions. Word has length 76 [2020-10-20 06:00:08,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:00:08,971 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 85 transitions. [2020-10-20 06:00:08,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:00:08,972 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 85 transitions. [2020-10-20 06:00:08,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-20 06:00:08,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:00:08,973 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:00:09,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-10-20 06:00:09,181 INFO L429 AbstractCegarLoop]: === Iteration 22 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 06:00:09,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:00:09,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1882931165, now seen corresponding path program 1 times [2020-10-20 06:00:09,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:00:09,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702866872] [2020-10-20 06:00:09,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:00:09,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:09,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:00:09,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:09,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 06:00:09,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:09,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-20 06:00:09,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:09,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-20 06:00:09,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:09,257 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-20 06:00:09,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702866872] [2020-10-20 06:00:09,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897941792] [2020-10-20 06:00:09,258 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 [2020-10-20 06:00:09,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:09,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:00:09,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:00:09,338 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-20 06:00:09,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:00:09,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2020-10-20 06:00:09,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99506167] [2020-10-20 06:00:09,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 06:00:09,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:00:09,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 06:00:09,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-20 06:00:09,340 INFO L87 Difference]: Start difference. First operand 82 states and 85 transitions. Second operand 8 states. [2020-10-20 06:00:09,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:00:09,450 INFO L93 Difference]: Finished difference Result 108 states and 112 transitions. [2020-10-20 06:00:09,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 06:00:09,453 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 77 [2020-10-20 06:00:09,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:00:09,454 INFO L225 Difference]: With dead ends: 108 [2020-10-20 06:00:09,454 INFO L226 Difference]: Without dead ends: 108 [2020-10-20 06:00:09,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-20 06:00:09,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-20 06:00:09,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 85. [2020-10-20 06:00:09,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-20 06:00:09,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 88 transitions. [2020-10-20 06:00:09,459 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 88 transitions. Word has length 77 [2020-10-20 06:00:09,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:00:09,460 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 88 transitions. [2020-10-20 06:00:09,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 06:00:09,460 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 88 transitions. [2020-10-20 06:00:09,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-20 06:00:09,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:00:09,461 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:00:09,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:00:09,670 INFO L429 AbstractCegarLoop]: === Iteration 23 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 06:00:09,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:00:09,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1445837420, now seen corresponding path program 6 times [2020-10-20 06:00:09,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:00:09,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527674218] [2020-10-20 06:00:09,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:00:09,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:09,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:00:09,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:09,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 06:00:09,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:09,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-20 06:00:09,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:09,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-20 06:00:09,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:09,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-20 06:00:09,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:09,824 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 133 proven. 32 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-20 06:00:09,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527674218] [2020-10-20 06:00:09,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216305489] [2020-10-20 06:00:09,825 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 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 [2020-10-20 06:00:09,872 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-20 06:00:09,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:00:09,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-20 06:00:09,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:00:09,878 INFO L441 ElimStorePlain]: Different costs {0=[|v_#length_15|], 1=[|v_#valid_29|]} [2020-10-20 06:00:09,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:00:09,882 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 [2020-10-20 06:00:09,883 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:00:09,890 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:00:09,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:00:09,894 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 [2020-10-20 06:00:09,895 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:00:09,900 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:00:09,901 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. [2020-10-20 06:00:09,901 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:21, output treesize:14 [2020-10-20 06:00:10,355 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 83 proven. 67 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-20 06:00:10,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:00:10,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 20 [2020-10-20 06:00:10,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778001325] [2020-10-20 06:00:10,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-20 06:00:10,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:00:10,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-20 06:00:10,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2020-10-20 06:00:10,358 INFO L87 Difference]: Start difference. First operand 85 states and 88 transitions. Second operand 20 states. [2020-10-20 06:00:11,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:00:11,609 INFO L93 Difference]: Finished difference Result 106 states and 110 transitions. [2020-10-20 06:00:11,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-20 06:00:11,610 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 93 [2020-10-20 06:00:11,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:00:11,612 INFO L225 Difference]: With dead ends: 106 [2020-10-20 06:00:11,612 INFO L226 Difference]: Without dead ends: 96 [2020-10-20 06:00:11,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 88 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=206, Invalid=916, Unknown=0, NotChecked=0, Total=1122 [2020-10-20 06:00:11,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-20 06:00:11,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 92. [2020-10-20 06:00:11,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-20 06:00:11,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 95 transitions. [2020-10-20 06:00:11,617 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 95 transitions. Word has length 93 [2020-10-20 06:00:11,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:00:11,618 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 95 transitions. [2020-10-20 06:00:11,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-20 06:00:11,618 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 95 transitions. [2020-10-20 06:00:11,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-20 06:00:11,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:00:11,619 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:00:11,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-10-20 06:00:11,822 INFO L429 AbstractCegarLoop]: === Iteration 24 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 06:00:11,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:00:11,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1309983867, now seen corresponding path program 2 times [2020-10-20 06:00:11,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:00:11,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580484286] [2020-10-20 06:00:11,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:00:11,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:11,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:00:11,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:11,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 06:00:11,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:11,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-20 06:00:11,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:11,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-20 06:00:11,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:11,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-20 06:00:11,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:11,929 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2020-10-20 06:00:11,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580484286] [2020-10-20 06:00:11,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131871245] [2020-10-20 06:00:11,930 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 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 [2020-10-20 06:00:12,004 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 06:00:12,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:00:12,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 06:00:12,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:00:12,050 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2020-10-20 06:00:12,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:00:12,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 9 [2020-10-20 06:00:12,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358063709] [2020-10-20 06:00:12,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 06:00:12,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:00:12,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 06:00:12,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:00:12,053 INFO L87 Difference]: Start difference. First operand 92 states and 95 transitions. Second operand 9 states. [2020-10-20 06:00:12,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:00:12,158 INFO L93 Difference]: Finished difference Result 103 states and 108 transitions. [2020-10-20 06:00:12,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 06:00:12,159 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 108 [2020-10-20 06:00:12,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:00:12,161 INFO L225 Difference]: With dead ends: 103 [2020-10-20 06:00:12,161 INFO L226 Difference]: Without dead ends: 103 [2020-10-20 06:00:12,161 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:00:12,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-20 06:00:12,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 98. [2020-10-20 06:00:12,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-20 06:00:12,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 102 transitions. [2020-10-20 06:00:12,165 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 102 transitions. Word has length 108 [2020-10-20 06:00:12,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:00:12,166 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 102 transitions. [2020-10-20 06:00:12,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 06:00:12,166 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 102 transitions. [2020-10-20 06:00:12,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-20 06:00:12,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:00:12,168 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:00:12,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:00:12,377 INFO L429 AbstractCegarLoop]: === Iteration 25 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 06:00:12,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:00:12,377 INFO L82 PathProgramCache]: Analyzing trace with hash 472765411, now seen corresponding path program 3 times [2020-10-20 06:00:12,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:00:12,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249828864] [2020-10-20 06:00:12,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:00:12,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:12,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:00:12,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:12,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 06:00:12,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:12,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-20 06:00:12,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:12,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-20 06:00:12,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:12,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-20 06:00:12,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:12,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-20 06:00:12,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:12,511 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2020-10-20 06:00:12,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249828864] [2020-10-20 06:00:12,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677798434] [2020-10-20 06:00:12,512 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 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 [2020-10-20 06:00:12,558 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-20 06:00:12,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:00:12,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 06:00:12,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:00:12,565 INFO L441 ElimStorePlain]: Different costs {0=[|v_#length_16|], 1=[|v_#valid_30|]} [2020-10-20 06:00:12,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:00:12,569 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 [2020-10-20 06:00:12,570 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:00:12,575 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:00:12,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:00:12,587 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 [2020-10-20 06:00:12,587 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:00:12,597 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:00:12,598 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. [2020-10-20 06:00:12,598 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:21, output treesize:14 [2020-10-20 06:00:12,966 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 640 trivial. 0 not checked. [2020-10-20 06:00:12,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-20 06:00:12,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 14 [2020-10-20 06:00:12,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355921069] [2020-10-20 06:00:12,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 06:00:12,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:00:12,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 06:00:12,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-10-20 06:00:12,969 INFO L87 Difference]: Start difference. First operand 98 states and 102 transitions. Second operand 7 states. [2020-10-20 06:00:13,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:00:13,021 INFO L93 Difference]: Finished difference Result 97 states and 101 transitions. [2020-10-20 06:00:13,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:00:13,022 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 139 [2020-10-20 06:00:13,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:00:13,023 INFO L225 Difference]: With dead ends: 97 [2020-10-20 06:00:13,023 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 06:00:13,024 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 137 SyntacticMatches, 9 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-10-20 06:00:13,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 06:00:13,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 06:00:13,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 06:00:13,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 06:00:13,025 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 139 [2020-10-20 06:00:13,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:00:13,025 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:00:13,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 06:00:13,026 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 06:00:13,026 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 06:00:13,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-10-20 06:00:13,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:00:13 BoogieIcfgContainer [2020-10-20 06:00:13,238 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:00:13,238 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:00:13,238 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:00:13,239 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:00:13,239 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:59:57" (3/4) ... [2020-10-20 06:00:13,242 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 06:00:13,248 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-10-20 06:00:13,248 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure foo [2020-10-20 06:00:13,248 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-10-20 06:00:13,252 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2020-10-20 06:00:13,252 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-10-20 06:00:13,252 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-10-20 06:00:13,253 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 06:00:13,288 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 06:00:13,289 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:00:13,290 INFO L168 Benchmark]: Toolchain (without parser) took 16392.42 ms. Allocated memory was 34.1 MB in the beginning and 101.7 MB in the end (delta: 67.6 MB). Free memory was 7.7 MB in the beginning and 32.7 MB in the end (delta: -24.9 MB). Peak memory consumption was 42.7 MB. Max. memory is 14.3 GB. [2020-10-20 06:00:13,291 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 33.6 MB. Free memory is still 12.6 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 06:00:13,291 INFO L168 Benchmark]: CACSL2BoogieTranslator took 467.77 ms. Allocated memory was 34.1 MB in the beginning and 45.1 MB in the end (delta: 11.0 MB). Free memory was 6.8 MB in the beginning and 28.6 MB in the end (delta: -21.7 MB). Peak memory consumption was 7.6 MB. Max. memory is 14.3 GB. [2020-10-20 06:00:13,292 INFO L168 Benchmark]: Boogie Preprocessor took 72.90 ms. Allocated memory is still 45.1 MB. Free memory was 28.6 MB in the beginning and 26.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. [2020-10-20 06:00:13,292 INFO L168 Benchmark]: RCFGBuilder took 443.07 ms. Allocated memory was 45.1 MB in the beginning and 45.6 MB in the end (delta: 524.3 kB). Free memory was 26.6 MB in the beginning and 23.4 MB in the end (delta: 3.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:00:13,293 INFO L168 Benchmark]: TraceAbstraction took 15348.46 ms. Allocated memory was 45.6 MB in the beginning and 101.7 MB in the end (delta: 56.1 MB). Free memory was 22.9 MB in the beginning and 35.8 MB in the end (delta: -12.8 MB). Peak memory consumption was 43.3 MB. Max. memory is 14.3 GB. [2020-10-20 06:00:13,293 INFO L168 Benchmark]: Witness Printer took 50.93 ms. Allocated memory is still 101.7 MB. Free memory was 35.8 MB in the beginning and 32.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 14.3 GB. [2020-10-20 06:00:13,295 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 33.6 MB. Free memory is still 12.6 MB. There was no memory consumed. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 467.77 ms. Allocated memory was 34.1 MB in the beginning and 45.1 MB in the end (delta: 11.0 MB). Free memory was 6.8 MB in the beginning and 28.6 MB in the end (delta: -21.7 MB). Peak memory consumption was 7.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 72.90 ms. Allocated memory is still 45.1 MB. Free memory was 28.6 MB in the beginning and 26.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. * RCFGBuilder took 443.07 ms. Allocated memory was 45.1 MB in the beginning and 45.6 MB in the end (delta: 524.3 kB). Free memory was 26.6 MB in the beginning and 23.4 MB in the end (delta: 3.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 14.3 GB. * TraceAbstraction took 15348.46 ms. Allocated memory was 45.6 MB in the beginning and 101.7 MB in the end (delta: 56.1 MB). Free memory was 22.9 MB in the beginning and 35.8 MB in the end (delta: -12.8 MB). Peak memory consumption was 43.3 MB. Max. memory is 14.3 GB. * Witness Printer took 50.93 ms. Allocated memory is still 101.7 MB. Free memory was 35.8 MB in the beginning and 32.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: array index is always in bounds For all program executions holds that array index is always in bounds at this location - PositiveResult [Line: 18]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 30]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 30]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 23]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 27]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 27]: 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: 15.2s, OverallIterations: 25, TraceHistogramMax: 14, AutomataDifference: 5.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 601 SDtfs, 1341 SDslu, 1101 SDs, 0 SdLazy, 3273 SolverSat, 281 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1304 GetRequests, 1043 SyntacticMatches, 31 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 591 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=98occurred 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, 209 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 2125 NumberOfCodeBlocks, 1811 NumberOfCodeBlocksAsserted, 53 NumberOfCheckSat, 2083 ConstructedInterpolants, 395 QuantifiedInterpolants, 800524 SizeOfPredicates, 33 NumberOfNonLiveVariables, 2311 ConjunctsInSsa, 130 ConjunctsInUnsatCore, 42 InterpolantComputations, 13 PerfectInterpolantSequences, 3552/4007 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...