./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength5.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/ArraysOfVariableLength5.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 32d9f155778c5c4efaa55d37fdad329bb0d271b5 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 05:59:46,575 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 05:59:46,578 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 05:59:46,602 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 05:59:46,602 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 05:59:46,603 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 05:59:46,611 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 05:59:46,614 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 05:59:46,616 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 05:59:46,617 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 05:59:46,618 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 05:59:46,619 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 05:59:46,619 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 05:59:46,620 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 05:59:46,621 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 05:59:46,623 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 05:59:46,624 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 05:59:46,625 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 05:59:46,627 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 05:59:46,629 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 05:59:46,631 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 05:59:46,632 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 05:59:46,634 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 05:59:46,635 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 05:59:46,637 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 05:59:46,638 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 05:59:46,638 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 05:59:46,639 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 05:59:46,640 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 05:59:46,641 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 05:59:46,641 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 05:59:46,642 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 05:59:46,643 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 05:59:46,644 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 05:59:46,645 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 05:59:46,645 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 05:59:46,646 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 05:59:46,646 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 05:59:46,647 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 05:59:46,648 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 05:59:46,648 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 05:59:46,649 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-20 05:59:46,682 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 05:59:46,682 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 05:59:46,684 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 05:59:46,685 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 05:59:46,685 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 05:59:46,685 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 05:59:46,685 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 05:59:46,686 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 05:59:46,686 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 05:59:46,686 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 05:59:46,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 05:59:46,687 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 05:59:46,688 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 05:59:46,688 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-20 05:59:46,688 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 05:59:46,689 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 05:59:46,689 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 05:59:46,689 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 05:59:46,689 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 05:59:46,690 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 05:59:46,690 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 05:59:46,690 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 05:59:46,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 05:59:46,691 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 05:59:46,691 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 05:59:46,691 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 05:59:46,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 05:59:46,692 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 05:59:46,692 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 -> 32d9f155778c5c4efaa55d37fdad329bb0d271b5 [2020-10-20 05:59:46,910 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 05:59:46,935 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 05:59:46,941 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 05:59:46,943 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 05:59:46,944 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 05:59:46,944 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength5.c [2020-10-20 05:59:47,019 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a02f84643/a7c0b5a3f4d1492291754d69b651a749/FLAGf3b926ebc [2020-10-20 05:59:47,496 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 05:59:47,497 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength5.c [2020-10-20 05:59:47,506 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a02f84643/a7c0b5a3f4d1492291754d69b651a749/FLAGf3b926ebc [2020-10-20 05:59:47,854 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a02f84643/a7c0b5a3f4d1492291754d69b651a749 [2020-10-20 05:59:47,858 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 05:59:47,863 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 05:59:47,864 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 05:59:47,865 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 05:59:47,868 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 05:59:47,869 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:59:47" (1/1) ... [2020-10-20 05:59:47,874 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3530a230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:47, skipping insertion in model container [2020-10-20 05:59:47,874 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:59:47" (1/1) ... [2020-10-20 05:59:47,884 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 05:59:47,904 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 05:59:48,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 05:59:48,172 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 05:59:48,188 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 05:59:48,202 INFO L208 MainTranslator]: Completed translation [2020-10-20 05:59:48,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:48 WrapperNode [2020-10-20 05:59:48,203 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 05:59:48,203 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 05:59:48,203 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 05:59:48,204 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 05:59:48,213 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:48" (1/1) ... [2020-10-20 05:59:48,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:48" (1/1) ... [2020-10-20 05:59:48,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:48" (1/1) ... [2020-10-20 05:59:48,221 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:48" (1/1) ... [2020-10-20 05:59:48,228 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:48" (1/1) ... [2020-10-20 05:59:48,233 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:48" (1/1) ... [2020-10-20 05:59:48,235 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:48" (1/1) ... [2020-10-20 05:59:48,238 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 05:59:48,238 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 05:59:48,239 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 05:59:48,239 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 05:59:48,240 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:48" (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 05:59:48,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 05:59:48,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 05:59:48,300 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-10-20 05:59:48,300 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 05:59:48,300 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-10-20 05:59:48,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 05:59:48,301 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 05:59:48,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 05:59:48,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 05:59:48,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 05:59:48,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 05:59:48,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 05:59:48,592 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 05:59:48,593 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-20 05:59:48,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:59:48 BoogieIcfgContainer [2020-10-20 05:59:48,597 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 05:59:48,599 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 05:59:48,599 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 05:59:48,603 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 05:59:48,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 05:59:47" (1/3) ... [2020-10-20 05:59:48,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47d1122d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:59:48, skipping insertion in model container [2020-10-20 05:59:48,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:48" (2/3) ... [2020-10-20 05:59:48,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47d1122d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:59:48, skipping insertion in model container [2020-10-20 05:59:48,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:59:48" (3/3) ... [2020-10-20 05:59:48,607 INFO L111 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength5.c [2020-10-20 05:59:48,623 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 05:59:48,631 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-10-20 05:59:48,648 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-10-20 05:59:48,673 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 05:59:48,674 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 05:59:48,674 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 05:59:48,674 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 05:59:48,675 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 05:59:48,675 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 05:59:48,675 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 05:59:48,675 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 05:59:48,696 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-10-20 05:59:48,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 05:59:48,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:48,708 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:59:48,709 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 05:59:48,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:59:48,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1909189377, now seen corresponding path program 1 times [2020-10-20 05:59:48,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:59:48,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436579023] [2020-10-20 05:59:48,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:59:48,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:48,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:59:48,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:48,998 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 05:59:48,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436579023] [2020-10-20 05:59:49,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:59:49,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 05:59:49,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344431294] [2020-10-20 05:59:49,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 05:59:49,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:59:49,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 05:59:49,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 05:59:49,024 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 4 states. [2020-10-20 05:59:49,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:59:49,226 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2020-10-20 05:59:49,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 05:59:49,228 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-20 05:59:49,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:59:49,239 INFO L225 Difference]: With dead ends: 58 [2020-10-20 05:59:49,239 INFO L226 Difference]: Without dead ends: 54 [2020-10-20 05:59:49,241 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 05:59:49,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-20 05:59:49,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 39. [2020-10-20 05:59:49,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-20 05:59:49,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-10-20 05:59:49,288 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 10 [2020-10-20 05:59:49,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:59:49,289 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-10-20 05:59:49,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 05:59:49,289 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-10-20 05:59:49,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 05:59:49,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:49,290 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:59:49,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 05:59:49,291 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 05:59:49,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:59:49,291 INFO L82 PathProgramCache]: Analyzing trace with hash -941983064, now seen corresponding path program 1 times [2020-10-20 05:59:49,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:59:49,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994484678] [2020-10-20 05:59:49,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:59:49,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:49,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:59:49,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:49,393 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 05:59:49,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994484678] [2020-10-20 05:59:49,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:59:49,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 05:59:49,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917532500] [2020-10-20 05:59:49,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 05:59:49,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:59:49,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 05:59:49,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 05:59:49,397 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 6 states. [2020-10-20 05:59:49,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:59:49,584 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2020-10-20 05:59:49,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 05:59:49,585 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-10-20 05:59:49,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:59:49,586 INFO L225 Difference]: With dead ends: 59 [2020-10-20 05:59:49,586 INFO L226 Difference]: Without dead ends: 59 [2020-10-20 05:59:49,587 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 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 05:59:49,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-20 05:59:49,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 45. [2020-10-20 05:59:49,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-20 05:59:49,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2020-10-20 05:59:49,596 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 11 [2020-10-20 05:59:49,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:59:49,596 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2020-10-20 05:59:49,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 05:59:49,597 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2020-10-20 05:59:49,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 05:59:49,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:49,597 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:59:49,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 05:59:49,598 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 05:59:49,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:59:49,599 INFO L82 PathProgramCache]: Analyzing trace with hash 143250926, now seen corresponding path program 1 times [2020-10-20 05:59:49,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:59:49,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992227017] [2020-10-20 05:59:49,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:59:49,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:49,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:59:49,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:49,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 05:59:49,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:49,700 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 05:59:49,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992227017] [2020-10-20 05:59:49,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:59:49,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 05:59:49,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575162957] [2020-10-20 05:59:49,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 05:59:49,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:59:49,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 05:59:49,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 05:59:49,703 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 4 states. [2020-10-20 05:59:49,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:59:49,782 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2020-10-20 05:59:49,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 05:59:49,783 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-20 05:59:49,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:59:49,798 INFO L225 Difference]: With dead ends: 43 [2020-10-20 05:59:49,799 INFO L226 Difference]: Without dead ends: 43 [2020-10-20 05:59:49,799 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 05:59:49,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-20 05:59:49,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-10-20 05:59:49,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-20 05:59:49,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2020-10-20 05:59:49,809 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 15 [2020-10-20 05:59:49,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:59:49,810 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2020-10-20 05:59:49,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 05:59:49,811 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2020-10-20 05:59:49,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 05:59:49,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:49,812 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:59:49,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 05:59:49,813 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 05:59:49,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:59:49,814 INFO L82 PathProgramCache]: Analyzing trace with hash 143250927, now seen corresponding path program 1 times [2020-10-20 05:59:49,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:59:49,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579857827] [2020-10-20 05:59:49,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:59:49,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:49,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:59:49,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:49,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 05:59:49,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:49,955 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 05:59:49,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579857827] [2020-10-20 05:59:49,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:59:49,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 05:59:49,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116411068] [2020-10-20 05:59:49,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 05:59:49,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:59:49,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 05:59:49,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 05:59:49,958 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand 4 states. [2020-10-20 05:59:50,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:59:50,041 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2020-10-20 05:59:50,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 05:59:50,041 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-20 05:59:50,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:59:50,043 INFO L225 Difference]: With dead ends: 47 [2020-10-20 05:59:50,043 INFO L226 Difference]: Without dead ends: 47 [2020-10-20 05:59:50,043 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 05:59:50,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-20 05:59:50,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2020-10-20 05:59:50,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-20 05:59:50,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2020-10-20 05:59:50,050 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 15 [2020-10-20 05:59:50,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:59:50,051 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2020-10-20 05:59:50,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 05:59:50,051 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2020-10-20 05:59:50,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-20 05:59:50,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:50,052 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] [2020-10-20 05:59:50,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 05:59:50,053 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 05:59:50,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:59:50,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1902162976, now seen corresponding path program 1 times [2020-10-20 05:59:50,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:59:50,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283314345] [2020-10-20 05:59:50,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:59:50,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:50,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:59:50,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:50,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 05:59:50,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:50,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:59:50,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283314345] [2020-10-20 05:59:50,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735099162] [2020-10-20 05:59:50,157 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 05:59:50,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:50,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-20 05:59:50,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:59:50,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:59:50,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:59:50,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2020-10-20 05:59:50,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807872263] [2020-10-20 05:59:50,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 05:59:50,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:59:50,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 05:59:50,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-20 05:59:50,275 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 6 states. [2020-10-20 05:59:50,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:59:50,406 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2020-10-20 05:59:50,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 05:59:50,406 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-10-20 05:59:50,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:59:50,408 INFO L225 Difference]: With dead ends: 69 [2020-10-20 05:59:50,408 INFO L226 Difference]: Without dead ends: 69 [2020-10-20 05:59:50,409 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 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 05:59:50,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-20 05:59:50,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 52. [2020-10-20 05:59:50,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-20 05:59:50,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2020-10-20 05:59:50,417 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 21 [2020-10-20 05:59:50,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:59:50,417 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2020-10-20 05:59:50,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 05:59:50,417 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2020-10-20 05:59:50,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-20 05:59:50,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:50,419 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:59:50,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:59:50,633 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 05:59:50,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:59:50,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1165178250, now seen corresponding path program 1 times [2020-10-20 05:59:50,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:59:50,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225754239] [2020-10-20 05:59:50,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:59:50,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:50,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:59:50,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:50,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 05:59:50,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:50,676 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-20 05:59:50,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225754239] [2020-10-20 05:59:50,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:59:50,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 05:59:50,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685771694] [2020-10-20 05:59:50,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 05:59:50,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:59:50,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 05:59:50,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 05:59:50,679 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 4 states. [2020-10-20 05:59:50,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:59:50,771 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2020-10-20 05:59:50,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 05:59:50,772 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-20 05:59:50,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:59:50,773 INFO L225 Difference]: With dead ends: 62 [2020-10-20 05:59:50,774 INFO L226 Difference]: Without dead ends: 62 [2020-10-20 05:59:50,774 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 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 05:59:50,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-20 05:59:50,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 54. [2020-10-20 05:59:50,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-20 05:59:50,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2020-10-20 05:59:50,781 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 22 [2020-10-20 05:59:50,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:59:50,781 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2020-10-20 05:59:50,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 05:59:50,781 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2020-10-20 05:59:50,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-20 05:59:50,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:50,783 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:59:50,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 05:59:50,783 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 05:59:50,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:59:50,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1760787427, now seen corresponding path program 1 times [2020-10-20 05:59:50,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:59:50,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097401671] [2020-10-20 05:59:50,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:59:50,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:50,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:59:50,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:50,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 05:59:50,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:50,858 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 05:59:50,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097401671] [2020-10-20 05:59:50,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103607854] [2020-10-20 05:59:50,859 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 05:59:50,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:50,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 05:59:50,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:59:50,965 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-10-20 05:59:50,965 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2020-10-20 05:59:50,966 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:59:50,971 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:59:50,972 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-20 05:59:50,973 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:11 [2020-10-20 05:59:51,037 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 05:59:51,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:59:51,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-10-20 05:59:51,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039979472] [2020-10-20 05:59:51,038 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 05:59:51,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:59:51,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 05:59:51,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-20 05:59:51,041 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand 8 states. [2020-10-20 05:59:51,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:59:51,171 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2020-10-20 05:59:51,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 05:59:51,171 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-10-20 05:59:51,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:59:51,172 INFO L225 Difference]: With dead ends: 53 [2020-10-20 05:59:51,172 INFO L226 Difference]: Without dead ends: 53 [2020-10-20 05:59:51,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-20 05:59:51,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-20 05:59:51,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-10-20 05:59:51,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-20 05:59:51,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2020-10-20 05:59:51,180 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 23 [2020-10-20 05:59:51,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:59:51,180 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2020-10-20 05:59:51,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 05:59:51,181 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2020-10-20 05:59:51,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-20 05:59:51,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:51,182 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:59:51,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:59:51,384 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 05:59:51,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:59:51,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1760787428, now seen corresponding path program 1 times [2020-10-20 05:59:51,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:59:51,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031969286] [2020-10-20 05:59:51,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:59:51,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:51,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:59:51,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:51,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 05:59:51,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:51,506 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 05:59:51,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031969286] [2020-10-20 05:59:51,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390996715] [2020-10-20 05:59:51,507 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 05:59:51,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:51,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-20 05:59:51,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:59:51,573 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:59:51,574 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2020-10-20 05:59:51,575 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:59:51,593 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2020-10-20 05:59:51,595 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:59:51,595 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:13, output treesize:9 [2020-10-20 05:59:51,635 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 05:59:51,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:59:51,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-10-20 05:59:51,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79611209] [2020-10-20 05:59:51,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 05:59:51,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:59:51,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 05:59:51,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-20 05:59:51,637 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand 8 states. [2020-10-20 05:59:51,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:59:51,810 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2020-10-20 05:59:51,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 05:59:51,811 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-10-20 05:59:51,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:59:51,812 INFO L225 Difference]: With dead ends: 59 [2020-10-20 05:59:51,812 INFO L226 Difference]: Without dead ends: 59 [2020-10-20 05:59:51,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-20 05:59:51,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-20 05:59:51,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 54. [2020-10-20 05:59:51,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-20 05:59:51,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2020-10-20 05:59:51,818 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 23 [2020-10-20 05:59:51,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:59:51,819 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2020-10-20 05:59:51,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 05:59:51,819 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2020-10-20 05:59:51,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-20 05:59:51,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:51,820 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:59:52,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:59:52,033 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 05:59:52,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:59:52,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1134972881, now seen corresponding path program 1 times [2020-10-20 05:59:52,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:59:52,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272854999] [2020-10-20 05:59:52,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:59:52,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:52,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:59:52,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:52,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 05:59:52,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:52,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-20 05:59:52,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:52,103 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 05:59:52,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272854999] [2020-10-20 05:59:52,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777328422] [2020-10-20 05:59:52,104 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 05:59:52,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:52,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 05:59:52,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:59:52,214 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 05:59:52,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-20 05:59:52,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 9 [2020-10-20 05:59:52,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520281442] [2020-10-20 05:59:52,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 05:59:52,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:59:52,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 05:59:52,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-20 05:59:52,217 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand 6 states. [2020-10-20 05:59:52,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:59:52,335 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2020-10-20 05:59:52,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 05:59:52,335 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-10-20 05:59:52,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:59:52,336 INFO L225 Difference]: With dead ends: 63 [2020-10-20 05:59:52,336 INFO L226 Difference]: Without dead ends: 60 [2020-10-20 05:59:52,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 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 05:59:52,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-20 05:59:52,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-10-20 05:59:52,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-20 05:59:52,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2020-10-20 05:59:52,341 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 26 [2020-10-20 05:59:52,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:59:52,341 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2020-10-20 05:59:52,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 05:59:52,341 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2020-10-20 05:59:52,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-20 05:59:52,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:52,342 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:59:52,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:59:52,553 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 05:59:52,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:59:52,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1992931931, now seen corresponding path program 1 times [2020-10-20 05:59:52,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:59:52,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507433004] [2020-10-20 05:59:52,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:59:52,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:52,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:59:52,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:52,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 05:59:52,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:52,626 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:59:52,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507433004] [2020-10-20 05:59:52,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919686564] [2020-10-20 05:59:52,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:59:52,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:52,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 05:59:52,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:59:52,751 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:59:52,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:59:52,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2020-10-20 05:59:52,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739288350] [2020-10-20 05:59:52,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-20 05:59:52,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:59:52,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-20 05:59:52,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-20 05:59:52,754 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 11 states. [2020-10-20 05:59:53,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:59:53,042 INFO L93 Difference]: Finished difference Result 81 states and 84 transitions. [2020-10-20 05:59:53,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 05:59:53,043 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-10-20 05:59:53,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:59:53,044 INFO L225 Difference]: With dead ends: 81 [2020-10-20 05:59:53,044 INFO L226 Difference]: Without dead ends: 81 [2020-10-20 05:59:53,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-10-20 05:59:53,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-20 05:59:53,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 65. [2020-10-20 05:59:53,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-20 05:59:53,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2020-10-20 05:59:53,050 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 27 [2020-10-20 05:59:53,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:59:53,050 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2020-10-20 05:59:53,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-20 05:59:53,050 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2020-10-20 05:59:53,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-20 05:59:53,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:53,054 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 05:59:53,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-10-20 05:59:53,265 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 05:59:53,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:59:53,265 INFO L82 PathProgramCache]: Analyzing trace with hash -790766996, now seen corresponding path program 1 times [2020-10-20 05:59:53,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:59:53,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776100353] [2020-10-20 05:59:53,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:59:53,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:53,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:59:53,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:53,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 05:59:53,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:53,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-20 05:59:53,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:53,363 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-20 05:59:53,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776100353] [2020-10-20 05:59:53,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025370182] [2020-10-20 05:59:53,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 05:59:53,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:53,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-20 05:59:53,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:59:53,424 INFO L441 ElimStorePlain]: Different costs {0=[|v_#length_13|], 1=[|v_#valid_25|]} [2020-10-20 05:59:53,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 05:59:53,441 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 05:59:53,441 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:59:53,458 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:59:53,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 05:59:53,467 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 05:59:53,469 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 05:59:53,476 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:59:53,477 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:59:53,477 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:17 [2020-10-20 05:59:53,650 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-20 05:59:53,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:59:53,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6] total 9 [2020-10-20 05:59:53,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933201494] [2020-10-20 05:59:53,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 05:59:53,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:59:53,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 05:59:53,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-20 05:59:53,653 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand 10 states. [2020-10-20 05:59:53,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:59:53,849 INFO L93 Difference]: Finished difference Result 69 states and 74 transitions. [2020-10-20 05:59:53,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 05:59:53,850 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-10-20 05:59:53,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:59:53,851 INFO L225 Difference]: With dead ends: 69 [2020-10-20 05:59:53,851 INFO L226 Difference]: Without dead ends: 69 [2020-10-20 05:59:53,851 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-20 05:59:53,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-20 05:59:53,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2020-10-20 05:59:53,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-20 05:59:53,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 72 transitions. [2020-10-20 05:59:53,857 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 72 transitions. Word has length 31 [2020-10-20 05:59:53,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:59:53,858 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 72 transitions. [2020-10-20 05:59:53,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 05:59:53,858 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 72 transitions. [2020-10-20 05:59:53,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-20 05:59:53,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:53,859 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 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 05:59:54,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:59:54,072 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 05:59:54,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:59:54,073 INFO L82 PathProgramCache]: Analyzing trace with hash 894123677, now seen corresponding path program 1 times [2020-10-20 05:59:54,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:59:54,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124912684] [2020-10-20 05:59:54,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:59:54,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:54,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:59:54,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:54,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 05:59:54,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:54,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-20 05:59:54,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:54,180 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-20 05:59:54,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124912684] [2020-10-20 05:59:54,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996211472] [2020-10-20 05:59:54,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:59:54,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:54,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 05:59:54,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:59:54,294 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-20 05:59:54,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:59:54,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-20 05:59:54,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538062424] [2020-10-20 05:59:54,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 05:59:54,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:59:54,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 05:59:54,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-20 05:59:54,296 INFO L87 Difference]: Start difference. First operand 67 states and 72 transitions. Second operand 9 states. [2020-10-20 05:59:54,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:59:54,480 INFO L93 Difference]: Finished difference Result 94 states and 98 transitions. [2020-10-20 05:59:54,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 05:59:54,481 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-10-20 05:59:54,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:59:54,482 INFO L225 Difference]: With dead ends: 94 [2020-10-20 05:59:54,483 INFO L226 Difference]: Without dead ends: 94 [2020-10-20 05:59:54,483 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-20 05:59:54,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-20 05:59:54,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 74. [2020-10-20 05:59:54,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-20 05:59:54,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 80 transitions. [2020-10-20 05:59:54,488 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 80 transitions. Word has length 37 [2020-10-20 05:59:54,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:59:54,488 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 80 transitions. [2020-10-20 05:59:54,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 05:59:54,488 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 80 transitions. [2020-10-20 05:59:54,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-20 05:59:54,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:54,490 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:59:54,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:59:54,696 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 05:59:54,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:59:54,697 INFO L82 PathProgramCache]: Analyzing trace with hash -174164318, now seen corresponding path program 2 times [2020-10-20 05:59:54,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:59:54,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135794551] [2020-10-20 05:59:54,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:59:54,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:54,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:59:54,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:54,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 05:59:54,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:54,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-20 05:59:54,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:54,752 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-20 05:59:54,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135794551] [2020-10-20 05:59:54,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262358417] [2020-10-20 05:59:54,753 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) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:59:54,814 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 05:59:54,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 05:59:54,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-20 05:59:54,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:59:54,939 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-20 05:59:54,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:59:54,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8] total 10 [2020-10-20 05:59:54,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693850134] [2020-10-20 05:59:54,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-20 05:59:54,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:59:54,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-20 05:59:54,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-20 05:59:54,942 INFO L87 Difference]: Start difference. First operand 74 states and 80 transitions. Second operand 11 states. [2020-10-20 05:59:55,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:59:55,341 INFO L93 Difference]: Finished difference Result 124 states and 130 transitions. [2020-10-20 05:59:55,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-20 05:59:55,342 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 43 [2020-10-20 05:59:55,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:59:55,344 INFO L225 Difference]: With dead ends: 124 [2020-10-20 05:59:55,344 INFO L226 Difference]: Without dead ends: 124 [2020-10-20 05:59:55,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-10-20 05:59:55,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-20 05:59:55,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 91. [2020-10-20 05:59:55,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-20 05:59:55,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2020-10-20 05:59:55,358 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 43 [2020-10-20 05:59:55,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:59:55,359 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2020-10-20 05:59:55,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-20 05:59:55,359 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2020-10-20 05:59:55,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-20 05:59:55,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:55,365 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] [2020-10-20 05:59:55,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-10-20 05:59:55,580 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 05:59:55,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:59:55,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1104126516, now seen corresponding path program 1 times [2020-10-20 05:59:55,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:59:55,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052781036] [2020-10-20 05:59:55,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:59:55,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:55,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:59:55,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:55,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 05:59:55,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:55,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-20 05:59:55,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:55,693 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-20 05:59:55,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052781036] [2020-10-20 05:59:55,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122008129] [2020-10-20 05:59:55,694 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 05:59:55,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:55,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 26 conjunts are in the unsatisfiable core [2020-10-20 05:59:55,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:59:55,782 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:59:55,782 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2020-10-20 05:59:55,783 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:59:55,800 INFO L625 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2020-10-20 05:59:55,802 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:59:55,802 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:13, output treesize:9 [2020-10-20 05:59:55,901 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-20 05:59:55,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:59:55,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 11 [2020-10-20 05:59:55,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644838282] [2020-10-20 05:59:55,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-20 05:59:55,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:59:55,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-20 05:59:55,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-20 05:59:55,904 INFO L87 Difference]: Start difference. First operand 91 states and 100 transitions. Second operand 12 states. [2020-10-20 05:59:56,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:59:56,184 INFO L93 Difference]: Finished difference Result 116 states and 127 transitions. [2020-10-20 05:59:56,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-20 05:59:56,184 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 44 [2020-10-20 05:59:56,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:59:56,185 INFO L225 Difference]: With dead ends: 116 [2020-10-20 05:59:56,186 INFO L226 Difference]: Without dead ends: 116 [2020-10-20 05:59:56,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-10-20 05:59:56,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-20 05:59:56,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 93. [2020-10-20 05:59:56,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-20 05:59:56,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 102 transitions. [2020-10-20 05:59:56,194 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 102 transitions. Word has length 44 [2020-10-20 05:59:56,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:59:56,194 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 102 transitions. [2020-10-20 05:59:56,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-20 05:59:56,195 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 102 transitions. [2020-10-20 05:59:56,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-20 05:59:56,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:56,196 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:59:56,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:59:56,405 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 05:59:56,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:59:56,406 INFO L82 PathProgramCache]: Analyzing trace with hash 2073773289, now seen corresponding path program 2 times [2020-10-20 05:59:56,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:59:56,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934776005] [2020-10-20 05:59:56,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:59:56,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:56,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:59:56,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:56,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 05:59:56,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:56,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-20 05:59:56,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:56,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-20 05:59:56,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:56,502 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-20 05:59:56,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934776005] [2020-10-20 05:59:56,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63635390] [2020-10-20 05:59:56,503 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 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 05:59:56,568 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 05:59:56,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 05:59:56,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 05:59:56,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:59:56,632 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-20 05:59:56,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:59:56,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2020-10-20 05:59:56,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055122064] [2020-10-20 05:59:56,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-20 05:59:56,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:59:56,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-20 05:59:56,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-20 05:59:56,635 INFO L87 Difference]: Start difference. First operand 93 states and 102 transitions. Second operand 12 states. [2020-10-20 05:59:56,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:59:56,972 INFO L93 Difference]: Finished difference Result 115 states and 120 transitions. [2020-10-20 05:59:56,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-20 05:59:56,972 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 47 [2020-10-20 05:59:56,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:59:56,973 INFO L225 Difference]: With dead ends: 115 [2020-10-20 05:59:56,974 INFO L226 Difference]: Without dead ends: 109 [2020-10-20 05:59:56,979 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-20 05:59:56,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-20 05:59:56,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 98. [2020-10-20 05:59:56,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-20 05:59:56,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 106 transitions. [2020-10-20 05:59:56,986 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 106 transitions. Word has length 47 [2020-10-20 05:59:56,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:59:56,989 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 106 transitions. [2020-10-20 05:59:56,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-20 05:59:56,990 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 106 transitions. [2020-10-20 05:59:56,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-20 05:59:56,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:56,992 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:59:57,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-20 05:59:57,204 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 05:59:57,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:59:57,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1381084076, now seen corresponding path program 3 times [2020-10-20 05:59:57,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:59:57,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163203490] [2020-10-20 05:59:57,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:59:57,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:57,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:59:57,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:57,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 05:59:57,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:57,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-20 05:59:57,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:57,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-20 05:59:57,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:57,349 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-20 05:59:57,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163203490] [2020-10-20 05:59:57,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666998574] [2020-10-20 05:59:57,350 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 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 05:59:57,386 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-20 05:59:57,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 05:59:57,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-20 05:59:57,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:59:57,394 INFO L441 ElimStorePlain]: Different costs {0=[|v_#length_15|], 1=[|v_#valid_26|]} [2020-10-20 05:59:57,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 05:59:57,398 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 05:59:57,398 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:59:57,411 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:59:57,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 05:59:57,415 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 05:59:57,416 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 05:59:57,421 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:59:57,422 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:59:57,422 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:14 [2020-10-20 05:59:57,711 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 23 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-20 05:59:57,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:59:57,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 11 [2020-10-20 05:59:57,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108143660] [2020-10-20 05:59:57,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-20 05:59:57,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:59:57,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-20 05:59:57,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-20 05:59:57,714 INFO L87 Difference]: Start difference. First operand 98 states and 106 transitions. Second operand 12 states. [2020-10-20 05:59:58,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:59:58,522 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2020-10-20 05:59:58,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-20 05:59:58,522 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 52 [2020-10-20 05:59:58,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:59:58,524 INFO L225 Difference]: With dead ends: 116 [2020-10-20 05:59:58,524 INFO L226 Difference]: Without dead ends: 116 [2020-10-20 05:59:58,525 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 52 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=118, Invalid=482, Unknown=0, NotChecked=0, Total=600 [2020-10-20 05:59:58,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-20 05:59:58,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 107. [2020-10-20 05:59:58,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-20 05:59:58,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 115 transitions. [2020-10-20 05:59:58,531 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 115 transitions. Word has length 52 [2020-10-20 05:59:58,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:59:58,532 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 115 transitions. [2020-10-20 05:59:58,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-20 05:59:58,532 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 115 transitions. [2020-10-20 05:59:58,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-20 05:59:58,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:58,534 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:59:58,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-20 05:59:58,747 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 05:59:58,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:59:58,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1868655978, now seen corresponding path program 3 times [2020-10-20 05:59:58,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:59:58,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574009851] [2020-10-20 05:59:58,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:59:58,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:58,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:59:58,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:58,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 05:59:58,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:58,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-20 05:59:58,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:58,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-20 05:59:58,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:58,910 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 76 proven. 35 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-20 05:59:58,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574009851] [2020-10-20 05:59:58,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349135505] [2020-10-20 05:59:58,911 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 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 05:59:58,966 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-20 05:59:58,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 05:59:58,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 05:59:58,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:59:59,058 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 78 proven. 3 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-20 05:59:59,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:59:59,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7] total 18 [2020-10-20 05:59:59,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336419991] [2020-10-20 05:59:59,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-20 05:59:59,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:59:59,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-20 05:59:59,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2020-10-20 05:59:59,060 INFO L87 Difference]: Start difference. First operand 107 states and 115 transitions. Second operand 18 states. [2020-10-20 05:59:59,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:59:59,703 INFO L93 Difference]: Finished difference Result 154 states and 159 transitions. [2020-10-20 05:59:59,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-20 05:59:59,704 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 74 [2020-10-20 05:59:59,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:59:59,705 INFO L225 Difference]: With dead ends: 154 [2020-10-20 05:59:59,705 INFO L226 Difference]: Without dead ends: 154 [2020-10-20 05:59:59,707 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2020-10-20 05:59:59,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-20 05:59:59,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 134. [2020-10-20 05:59:59,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-20 05:59:59,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 143 transitions. [2020-10-20 05:59:59,714 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 143 transitions. Word has length 74 [2020-10-20 05:59:59,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:59:59,714 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 143 transitions. [2020-10-20 05:59:59,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-20 05:59:59,714 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 143 transitions. [2020-10-20 05:59:59,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-20 05:59:59,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:59,716 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:59:59,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-20 05:59:59,917 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 05:59:59,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:59:59,918 INFO L82 PathProgramCache]: Analyzing trace with hash 241209475, now seen corresponding path program 1 times [2020-10-20 05:59:59,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:59:59,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557117012] [2020-10-20 05:59:59,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:59:59,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:59,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:59:59,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:59,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 05:59:59,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:59,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-20 05:59:59,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:59,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-20 05:59:59,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:59,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-20 05:59:59,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:00,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-20 06:00:00,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:00,046 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 97 proven. 49 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-10-20 06:00:00,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557117012] [2020-10-20 06:00:00,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893382641] [2020-10-20 06:00:00,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 06:00:00,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:00,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-20 06:00:00,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:00:00,213 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 194 proven. 7 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-10-20 06:00:00,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:00:00,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 15 [2020-10-20 06:00:00,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796282236] [2020-10-20 06:00:00,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-20 06:00:00,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:00:00,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-20 06:00:00,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-10-20 06:00:00,217 INFO L87 Difference]: Start difference. First operand 134 states and 143 transitions. Second operand 15 states. [2020-10-20 06:00:00,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:00:00,628 INFO L93 Difference]: Finished difference Result 161 states and 166 transitions. [2020-10-20 06:00:00,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-20 06:00:00,629 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 103 [2020-10-20 06:00:00,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:00:00,631 INFO L225 Difference]: With dead ends: 161 [2020-10-20 06:00:00,631 INFO L226 Difference]: Without dead ends: 155 [2020-10-20 06:00:00,632 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2020-10-20 06:00:00,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-20 06:00:00,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 139. [2020-10-20 06:00:00,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-20 06:00:00,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 147 transitions. [2020-10-20 06:00:00,637 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 147 transitions. Word has length 103 [2020-10-20 06:00:00,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:00:00,638 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 147 transitions. [2020-10-20 06:00:00,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-20 06:00:00,638 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 147 transitions. [2020-10-20 06:00:00,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-20 06:00:00,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:00:00,640 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:00:00,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-20 06:00:00,854 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 06:00:00,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:00:00,855 INFO L82 PathProgramCache]: Analyzing trace with hash -311092151, now seen corresponding path program 2 times [2020-10-20 06:00:00,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:00:00,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160289365] [2020-10-20 06:00:00,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:00:00,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:00,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:00:00,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:00,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 06:00:00,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:00,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-20 06:00:00,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:00,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-20 06:00:00,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:00,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-20 06:00:00,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:00,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-20 06:00:00,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:01,002 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2020-10-20 06:00:01,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160289365] [2020-10-20 06:00:01,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691136221] [2020-10-20 06:00:01,003 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 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 06:00:01,055 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-20 06:00:01,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:00:01,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-20 06:00:01,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:00:01,112 INFO L350 Elim1Store]: treesize reduction 14, result has 50.0 percent of original size [2020-10-20 06:00:01,113 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 06:00:01,114 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:00:01,119 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:00:01,122 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 06:00:01,123 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2020-10-20 06:00:01,193 INFO L350 Elim1Store]: treesize reduction 14, result has 50.0 percent of original size [2020-10-20 06:00:01,194 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 06:00:01,195 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:00:01,199 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:00:01,201 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 06:00:01,202 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2020-10-20 06:00:01,291 INFO L350 Elim1Store]: treesize reduction 14, result has 50.0 percent of original size [2020-10-20 06:00:01,292 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 06:00:01,293 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:00:01,298 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:00:01,300 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 06:00:01,300 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2020-10-20 06:00:01,425 INFO L350 Elim1Store]: treesize reduction 14, result has 50.0 percent of original size [2020-10-20 06:00:01,425 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 06:00:01,427 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:00:01,432 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:00:01,434 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 06:00:01,434 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2020-10-20 06:00:01,578 INFO L350 Elim1Store]: treesize reduction 14, result has 50.0 percent of original size [2020-10-20 06:00:01,578 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 06:00:01,580 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:00:01,585 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:00:01,587 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 06:00:01,587 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2020-10-20 06:00:01,817 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2020-10-20 06:00:01,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-20 06:00:01,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2020-10-20 06:00:01,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15148916] [2020-10-20 06:00:01,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:00:01,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:00:01,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:00:01,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-20 06:00:01,821 INFO L87 Difference]: Start difference. First operand 139 states and 147 transitions. Second operand 6 states. [2020-10-20 06:00:01,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:00:01,906 INFO L93 Difference]: Finished difference Result 138 states and 146 transitions. [2020-10-20 06:00:01,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:00:01,907 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2020-10-20 06:00:01,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:00:01,908 INFO L225 Difference]: With dead ends: 138 [2020-10-20 06:00:01,908 INFO L226 Difference]: Without dead ends: 135 [2020-10-20 06:00:01,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 112 SyntacticMatches, 9 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-20 06:00:01,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-20 06:00:01,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 132. [2020-10-20 06:00:01,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-20 06:00:01,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 135 transitions. [2020-10-20 06:00:01,913 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 135 transitions. Word has length 113 [2020-10-20 06:00:01,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:00:01,914 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 135 transitions. [2020-10-20 06:00:01,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:00:01,914 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 135 transitions. [2020-10-20 06:00:01,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-20 06:00:01,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:00:01,916 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:00:02,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:00:02,127 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 06:00:02,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:00:02,127 INFO L82 PathProgramCache]: Analyzing trace with hash 419498507, now seen corresponding path program 1 times [2020-10-20 06:00:02,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:00:02,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350417302] [2020-10-20 06:00:02,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:00:02,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:02,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:00:02,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:02,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 06:00:02,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:02,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-20 06:00:02,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:02,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-20 06:00:02,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:02,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-20 06:00:02,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:02,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-20 06:00:02,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:02,262 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2020-10-20 06:00:02,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350417302] [2020-10-20 06:00:02,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572956716] [2020-10-20 06:00:02,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 06:00:02,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:02,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-20 06:00:02,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:00:02,501 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 189 proven. 18 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2020-10-20 06:00:02,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:00:02,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 19 [2020-10-20 06:00:02,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181118916] [2020-10-20 06:00:02,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-20 06:00:02,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:00:02,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-20 06:00:02,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2020-10-20 06:00:02,507 INFO L87 Difference]: Start difference. First operand 132 states and 135 transitions. Second operand 19 states. [2020-10-20 06:00:03,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:00:03,191 INFO L93 Difference]: Finished difference Result 170 states and 175 transitions. [2020-10-20 06:00:03,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-20 06:00:03,191 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 126 [2020-10-20 06:00:03,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:00:03,193 INFO L225 Difference]: With dead ends: 170 [2020-10-20 06:00:03,193 INFO L226 Difference]: Without dead ends: 167 [2020-10-20 06:00:03,194 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=190, Invalid=866, Unknown=0, NotChecked=0, Total=1056 [2020-10-20 06:00:03,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-20 06:00:03,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 143. [2020-10-20 06:00:03,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-20 06:00:03,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 147 transitions. [2020-10-20 06:00:03,199 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 147 transitions. Word has length 126 [2020-10-20 06:00:03,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:00:03,200 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 147 transitions. [2020-10-20 06:00:03,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-20 06:00:03,200 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 147 transitions. [2020-10-20 06:00:03,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-20 06:00:03,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:00:03,212 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:00:03,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:00:03,426 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 06:00:03,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:00:03,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1289574162, now seen corresponding path program 2 times [2020-10-20 06:00:03,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:00:03,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230329841] [2020-10-20 06:00:03,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:00:03,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:03,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:00:03,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:03,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 06:00:03,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:03,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-20 06:00:03,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:03,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-20 06:00:03,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:03,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-20 06:00:03,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:03,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-20 06:00:03,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:03,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-20 06:00:03,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:03,617 INFO L134 CoverageAnalysis]: Checked inductivity of 742 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 646 trivial. 0 not checked. [2020-10-20 06:00:03,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230329841] [2020-10-20 06:00:03,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685527078] [2020-10-20 06:00:03,618 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 06:00:03,719 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 06:00:03,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:00:03,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-20 06:00:03,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:00:03,927 INFO L134 CoverageAnalysis]: Checked inductivity of 742 backedges. 346 proven. 34 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2020-10-20 06:00:03,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:00:03,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14] total 22 [2020-10-20 06:00:03,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857658408] [2020-10-20 06:00:03,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-20 06:00:03,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:00:03,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-20 06:00:03,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2020-10-20 06:00:03,943 INFO L87 Difference]: Start difference. First operand 143 states and 147 transitions. Second operand 22 states. [2020-10-20 06:00:04,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:00:04,768 INFO L93 Difference]: Finished difference Result 220 states and 228 transitions. [2020-10-20 06:00:04,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-20 06:00:04,769 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 162 [2020-10-20 06:00:04,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:00:04,772 INFO L225 Difference]: With dead ends: 220 [2020-10-20 06:00:04,772 INFO L226 Difference]: Without dead ends: 220 [2020-10-20 06:00:04,773 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=1225, Unknown=0, NotChecked=0, Total=1482 [2020-10-20 06:00:04,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-20 06:00:04,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 179. [2020-10-20 06:00:04,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-10-20 06:00:04,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 185 transitions. [2020-10-20 06:00:04,780 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 185 transitions. Word has length 162 [2020-10-20 06:00:04,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:00:04,781 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 185 transitions. [2020-10-20 06:00:04,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-20 06:00:04,781 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 185 transitions. [2020-10-20 06:00:04,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-20 06:00:04,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:00:04,784 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:00:04,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:00:04,997 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 06:00:04,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:00:04,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1415289466, now seen corresponding path program 3 times [2020-10-20 06:00:04,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:00:04,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325239143] [2020-10-20 06:00:04,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:00:05,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:05,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:00:05,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:05,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 06:00:05,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:05,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-20 06:00:05,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:05,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-20 06:00:05,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:05,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-20 06:00:05,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:05,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-20 06:00:05,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:05,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-20 06:00:05,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:05,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-10-20 06:00:05,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:00:05,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1360 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 1227 trivial. 0 not checked. [2020-10-20 06:00:05,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325239143] [2020-10-20 06:00:05,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290467238] [2020-10-20 06:00:05,203 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 06:00:05,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-20 06:00:05,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:00:05,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 06:00:05,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:00:05,282 INFO L441 ElimStorePlain]: Different costs {0=[|v_#length_16|], 1=[|v_#valid_29|]} [2020-10-20 06:00:05,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:00:05,308 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 06:00:05,308 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:00:05,319 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:00:05,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-20 06:00:05,323 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 06:00:05,324 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 06:00:05,329 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:00:05,330 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 06:00:05,330 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:21, output treesize:14 [2020-10-20 06:00:06,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1360 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1346 trivial. 0 not checked. [2020-10-20 06:00:06,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-20 06:00:06,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 16 [2020-10-20 06:00:06,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314004533] [2020-10-20 06:00:06,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 06:00:06,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:00:06,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 06:00:06,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2020-10-20 06:00:06,028 INFO L87 Difference]: Start difference. First operand 179 states and 185 transitions. Second operand 7 states. [2020-10-20 06:00:06,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:00:06,092 INFO L93 Difference]: Finished difference Result 178 states and 184 transitions. [2020-10-20 06:00:06,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 06:00:06,093 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 203 [2020-10-20 06:00:06,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:00:06,094 INFO L225 Difference]: With dead ends: 178 [2020-10-20 06:00:06,094 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 06:00:06,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 201 SyntacticMatches, 13 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2020-10-20 06:00:06,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 06:00:06,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 06:00:06,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 06:00:06,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 06:00:06,096 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 203 [2020-10-20 06:00:06,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:00:06,096 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:00:06,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 06:00:06,096 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 06:00:06,096 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 06:00:06,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-10-20 06:00:06,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:00:06 BoogieIcfgContainer [2020-10-20 06:00:06,303 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:00:06,304 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:00:06,304 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:00:06,304 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:00:06,305 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:59:48" (3/4) ... [2020-10-20 06:00:06,309 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 06:00:06,316 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-10-20 06:00:06,316 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure foo [2020-10-20 06:00:06,316 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-10-20 06:00:06,322 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2020-10-20 06:00:06,322 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-10-20 06:00:06,323 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-10-20 06:00:06,323 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 06:00:06,367 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 06:00:06,367 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:00:06,369 INFO L168 Benchmark]: Toolchain (without parser) took 18509.92 ms. Allocated memory was 34.1 MB in the beginning and 119.5 MB in the end (delta: 85.5 MB). Free memory was 10.5 MB in the beginning and 24.0 MB in the end (delta: -13.5 MB). Peak memory consumption was 71.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:00:06,369 INFO L168 Benchmark]: CDTParser took 0.56 ms. Allocated memory is still 33.0 MB. Free memory was 17.5 MB in the beginning and 17.4 MB in the end (delta: 38.8 kB). Peak memory consumption was 38.8 kB. Max. memory is 14.3 GB. [2020-10-20 06:00:06,370 INFO L168 Benchmark]: CACSL2BoogieTranslator took 338.79 ms. Allocated memory was 34.1 MB in the beginning and 43.5 MB in the end (delta: 9.4 MB). Free memory was 9.6 MB in the beginning and 26.3 MB in the end (delta: -16.7 MB). Peak memory consumption was 6.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:00:06,370 INFO L168 Benchmark]: Boogie Preprocessor took 34.57 ms. Allocated memory is still 43.5 MB. Free memory was 26.3 MB in the beginning and 24.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 06:00:06,371 INFO L168 Benchmark]: RCFGBuilder took 358.66 ms. Allocated memory was 43.5 MB in the beginning and 43.0 MB in the end (delta: -524.3 kB). Free memory was 24.4 MB in the beginning and 17.9 MB in the end (delta: 6.5 MB). Peak memory consumption was 12.1 MB. Max. memory is 14.3 GB. [2020-10-20 06:00:06,371 INFO L168 Benchmark]: TraceAbstraction took 17704.24 ms. Allocated memory was 43.0 MB in the beginning and 119.5 MB in the end (delta: 76.5 MB). Free memory was 17.5 MB in the beginning and 27.8 MB in the end (delta: -10.3 MB). Peak memory consumption was 66.3 MB. Max. memory is 14.3 GB. [2020-10-20 06:00:06,372 INFO L168 Benchmark]: Witness Printer took 63.54 ms. Allocated memory is still 119.5 MB. Free memory was 27.8 MB in the beginning and 24.0 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 14.3 GB. [2020-10-20 06:00:06,375 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56 ms. Allocated memory is still 33.0 MB. Free memory was 17.5 MB in the beginning and 17.4 MB in the end (delta: 38.8 kB). Peak memory consumption was 38.8 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 338.79 ms. Allocated memory was 34.1 MB in the beginning and 43.5 MB in the end (delta: 9.4 MB). Free memory was 9.6 MB in the beginning and 26.3 MB in the end (delta: -16.7 MB). Peak memory consumption was 6.9 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 34.57 ms. Allocated memory is still 43.5 MB. Free memory was 26.3 MB in the beginning and 24.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * RCFGBuilder took 358.66 ms. Allocated memory was 43.5 MB in the beginning and 43.0 MB in the end (delta: -524.3 kB). Free memory was 24.4 MB in the beginning and 17.9 MB in the end (delta: 6.5 MB). Peak memory consumption was 12.1 MB. Max. memory is 14.3 GB. * TraceAbstraction took 17704.24 ms. Allocated memory was 43.0 MB in the beginning and 119.5 MB in the end (delta: 76.5 MB). Free memory was 17.5 MB in the beginning and 27.8 MB in the end (delta: -10.3 MB). Peak memory consumption was 66.3 MB. Max. memory is 14.3 GB. * Witness Printer took 63.54 ms. Allocated memory is still 119.5 MB. Free memory was 27.8 MB in the beginning and 24.0 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 16]: array index is always in bounds For all program executions holds that array index is always in bounds at this location - PositiveResult [Line: 16]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 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: 21]: 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: 17.6s, OverallIterations: 22, TraceHistogramMax: 20, AutomataDifference: 6.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 524 SDtfs, 1946 SDslu, 1229 SDs, 0 SdLazy, 4271 SolverSat, 461 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1529 GetRequests, 1203 SyntacticMatches, 34 SemanticMatches, 292 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1205 ImplicationChecksByTransitivity, 4.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=179occurred in iteration=21, 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, 22 MinimizatonAttempts, 285 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 5.3s InterpolantComputationTime, 2383 NumberOfCodeBlocks, 2037 NumberOfCodeBlocksAsserted, 45 NumberOfCheckSat, 2344 ConstructedInterpolants, 342 QuantifiedInterpolants, 1215622 SizeOfPredicates, 50 NumberOfNonLiveVariables, 2879 ConjunctsInSsa, 180 ConjunctsInUnsatCore, 39 InterpolantComputations, 8 PerfectInterpolantSequences, 6271/6862 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...