./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2.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/ArraysOfVariableLength2.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 2ef789dd0026a0c0ee3639964867439e8d9c0358 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis 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/ArraysOfVariableLength2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.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 2ef789dd0026a0c0ee3639964867439e8d9c0358 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 05:59:16,583 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 05:59:16,586 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 05:59:16,611 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 05:59:16,611 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 05:59:16,613 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 05:59:16,614 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 05:59:16,616 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 05:59:16,618 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 05:59:16,620 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 05:59:16,621 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 05:59:16,622 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 05:59:16,623 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 05:59:16,624 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 05:59:16,626 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 05:59:16,627 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 05:59:16,628 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 05:59:16,629 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 05:59:16,631 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 05:59:16,634 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 05:59:16,636 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 05:59:16,637 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 05:59:16,639 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 05:59:16,640 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 05:59:16,643 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 05:59:16,643 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 05:59:16,643 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 05:59:16,645 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 05:59:16,645 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 05:59:16,646 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 05:59:16,647 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 05:59:16,648 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 05:59:16,649 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 05:59:16,650 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 05:59:16,651 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 05:59:16,652 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 05:59:16,653 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 05:59:16,653 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 05:59:16,653 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 05:59:16,654 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 05:59:16,655 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 05:59:16,656 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-20 05:59:16,692 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 05:59:16,696 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 05:59:16,697 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 05:59:16,698 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 05:59:16,698 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 05:59:16,698 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 05:59:16,698 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 05:59:16,698 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 05:59:16,698 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 05:59:16,699 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 05:59:16,699 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 05:59:16,701 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 05:59:16,701 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 05:59:16,701 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-20 05:59:16,702 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 05:59:16,702 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 05:59:16,702 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 05:59:16,702 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 05:59:16,702 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 05:59:16,702 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 05:59:16,703 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 05:59:16,703 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 05:59:16,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 05:59:16,703 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 05:59:16,703 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 05:59:16,703 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 05:59:16,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 05:59:16,704 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 05:59:16,704 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 -> 2ef789dd0026a0c0ee3639964867439e8d9c0358 [2020-10-20 05:59:16,939 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 05:59:16,953 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 05:59:16,957 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 05:59:16,959 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 05:59:16,960 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 05:59:16,961 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2.c [2020-10-20 05:59:17,033 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7aefd480b/ff86b0327c3e4a70b6ba5691c3fd17ed/FLAGc02dcbfe4 [2020-10-20 05:59:17,637 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 05:59:17,638 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2.c [2020-10-20 05:59:17,644 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7aefd480b/ff86b0327c3e4a70b6ba5691c3fd17ed/FLAGc02dcbfe4 [2020-10-20 05:59:17,913 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7aefd480b/ff86b0327c3e4a70b6ba5691c3fd17ed [2020-10-20 05:59:17,917 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 05:59:17,925 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 05:59:17,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 05:59:17,926 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 05:59:17,930 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 05:59:17,931 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:59:17" (1/1) ... [2020-10-20 05:59:17,936 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6577d051 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:17, skipping insertion in model container [2020-10-20 05:59:17,936 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:59:17" (1/1) ... [2020-10-20 05:59:17,945 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 05:59:17,964 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 05:59:18,234 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 05:59:18,248 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 05:59:18,296 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 05:59:18,316 INFO L208 MainTranslator]: Completed translation [2020-10-20 05:59:18,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:18 WrapperNode [2020-10-20 05:59:18,317 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 05:59:18,318 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 05:59:18,319 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 05:59:18,319 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 05:59:18,335 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:18" (1/1) ... [2020-10-20 05:59:18,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:18" (1/1) ... [2020-10-20 05:59:18,346 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:18" (1/1) ... [2020-10-20 05:59:18,349 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:18" (1/1) ... [2020-10-20 05:59:18,373 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:18" (1/1) ... [2020-10-20 05:59:18,378 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:18" (1/1) ... [2020-10-20 05:59:18,383 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:18" (1/1) ... [2020-10-20 05:59:18,387 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 05:59:18,388 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 05:59:18,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 05:59:18,388 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 05:59:18,389 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:18" (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 05:59:18,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 05:59:18,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 05:59:18,463 INFO L138 BoogieDeclarations]: Found implementation of procedure bar [2020-10-20 05:59:18,464 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-10-20 05:59:18,464 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 05:59:18,464 INFO L130 BoogieDeclarations]: Found specification of procedure bar [2020-10-20 05:59:18,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 05:59:18,465 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-10-20 05:59:18,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 05:59:18,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 05:59:18,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 05:59:18,466 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 05:59:18,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 05:59:18,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 05:59:18,889 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 05:59:18,890 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-20 05:59:18,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:59:18 BoogieIcfgContainer [2020-10-20 05:59:18,892 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 05:59:18,893 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 05:59:18,894 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 05:59:18,898 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 05:59:18,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 05:59:17" (1/3) ... [2020-10-20 05:59:18,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30f3517a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:59:18, skipping insertion in model container [2020-10-20 05:59:18,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:18" (2/3) ... [2020-10-20 05:59:18,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30f3517a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:59:18, skipping insertion in model container [2020-10-20 05:59:18,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:59:18" (3/3) ... [2020-10-20 05:59:18,902 INFO L111 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength2.c [2020-10-20 05:59:18,914 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 05:59:18,922 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-10-20 05:59:18,937 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-10-20 05:59:18,958 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 05:59:18,958 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 05:59:18,958 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 05:59:18,958 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 05:59:18,959 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 05:59:18,959 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 05:59:18,959 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 05:59:18,959 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 05:59:18,977 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-10-20 05:59:18,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 05:59:18,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:18,986 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:59:18,987 INFO L429 AbstractCegarLoop]: === Iteration 1 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:59:18,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:59:18,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1403638412, now seen corresponding path program 1 times [2020-10-20 05:59:19,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:59:19,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391242395] [2020-10-20 05:59:19,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:59:19,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:19,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:59:19,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:19,189 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 05:59:19,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391242395] [2020-10-20 05:59:19,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:59:19,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 05:59:19,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184041405] [2020-10-20 05:59:19,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 05:59:19,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:59:19,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 05:59:19,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 05:59:19,234 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 3 states. [2020-10-20 05:59:19,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:59:19,377 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2020-10-20 05:59:19,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 05:59:19,379 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-20 05:59:19,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:59:19,390 INFO L225 Difference]: With dead ends: 52 [2020-10-20 05:59:19,390 INFO L226 Difference]: Without dead ends: 49 [2020-10-20 05:59:19,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 05:59:19,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-20 05:59:19,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-10-20 05:59:19,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-20 05:59:19,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2020-10-20 05:59:19,441 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 10 [2020-10-20 05:59:19,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:59:19,442 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2020-10-20 05:59:19,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 05:59:19,442 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2020-10-20 05:59:19,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 05:59:19,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:19,443 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:59:19,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 05:59:19,444 INFO L429 AbstractCegarLoop]: === Iteration 2 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:59:19,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:59:19,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1403995904, now seen corresponding path program 1 times [2020-10-20 05:59:19,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:59:19,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565774369] [2020-10-20 05:59:19,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:59:19,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:19,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:59:19,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:19,520 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 05:59:19,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565774369] [2020-10-20 05:59:19,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:59:19,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 05:59:19,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101317738] [2020-10-20 05:59:19,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 05:59:19,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:59:19,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 05:59:19,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 05:59:19,526 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand 4 states. [2020-10-20 05:59:19,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:59:19,658 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2020-10-20 05:59:19,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 05:59:19,659 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-20 05:59:19,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:59:19,663 INFO L225 Difference]: With dead ends: 56 [2020-10-20 05:59:19,663 INFO L226 Difference]: Without dead ends: 56 [2020-10-20 05:59:19,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 05:59:19,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-20 05:59:19,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 49. [2020-10-20 05:59:19,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-20 05:59:19,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-20 05:59:19,678 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 10 [2020-10-20 05:59:19,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:59:19,679 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-20 05:59:19,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 05:59:19,679 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-20 05:59:19,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 05:59:19,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:19,680 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:59:19,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 05:59:19,681 INFO L429 AbstractCegarLoop]: === Iteration 3 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:59:19,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:59:19,682 INFO L82 PathProgramCache]: Analyzing trace with hash -571487811, now seen corresponding path program 1 times [2020-10-20 05:59:19,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:59:19,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267190795] [2020-10-20 05:59:19,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:59:19,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:19,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:59:19,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:19,827 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 05:59:19,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267190795] [2020-10-20 05:59:19,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:59:19,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 05:59:19,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480303080] [2020-10-20 05:59:19,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 05:59:19,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:59:19,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 05:59:19,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 05:59:19,830 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 6 states. [2020-10-20 05:59:20,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:59:20,029 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2020-10-20 05:59:20,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 05:59:20,030 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-10-20 05:59:20,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:59:20,031 INFO L225 Difference]: With dead ends: 63 [2020-10-20 05:59:20,032 INFO L226 Difference]: Without dead ends: 63 [2020-10-20 05:59:20,032 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-20 05:59:20,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-20 05:59:20,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 57. [2020-10-20 05:59:20,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-20 05:59:20,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 63 transitions. [2020-10-20 05:59:20,042 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 63 transitions. Word has length 11 [2020-10-20 05:59:20,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:59:20,042 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 63 transitions. [2020-10-20 05:59:20,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 05:59:20,043 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 63 transitions. [2020-10-20 05:59:20,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 05:59:20,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:20,046 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:59:20,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 05:59:20,046 INFO L429 AbstractCegarLoop]: === Iteration 4 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:59:20,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:59:20,047 INFO L82 PathProgramCache]: Analyzing trace with hash 57103265, now seen corresponding path program 1 times [2020-10-20 05:59:20,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:59:20,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962362196] [2020-10-20 05:59:20,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:59:20,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:20,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:59:20,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:20,137 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 05:59:20,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962362196] [2020-10-20 05:59:20,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:59:20,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-20 05:59:20,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799741434] [2020-10-20 05:59:20,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 05:59:20,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:59:20,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 05:59:20,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-20 05:59:20,140 INFO L87 Difference]: Start difference. First operand 57 states and 63 transitions. Second operand 8 states. [2020-10-20 05:59:20,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:59:20,425 INFO L93 Difference]: Finished difference Result 68 states and 73 transitions. [2020-10-20 05:59:20,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 05:59:20,426 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-10-20 05:59:20,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:59:20,427 INFO L225 Difference]: With dead ends: 68 [2020-10-20 05:59:20,428 INFO L226 Difference]: Without dead ends: 68 [2020-10-20 05:59:20,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-20 05:59:20,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-20 05:59:20,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 62. [2020-10-20 05:59:20,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-20 05:59:20,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 67 transitions. [2020-10-20 05:59:20,449 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 67 transitions. Word has length 14 [2020-10-20 05:59:20,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:59:20,449 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 67 transitions. [2020-10-20 05:59:20,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 05:59:20,450 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 67 transitions. [2020-10-20 05:59:20,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-20 05:59:20,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:20,452 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:59:20,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 05:59:20,452 INFO L429 AbstractCegarLoop]: === Iteration 5 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:59:20,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:59:20,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1301246681, now seen corresponding path program 1 times [2020-10-20 05:59:20,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:59:20,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101474409] [2020-10-20 05:59:20,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:59:20,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:20,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:59:20,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:20,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 05:59:20,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:20,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 05:59:20,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:20,659 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 05:59:20,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101474409] [2020-10-20 05:59:20,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:59:20,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 05:59:20,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804859299] [2020-10-20 05:59:20,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 05:59:20,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:59:20,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 05:59:20,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-20 05:59:20,663 INFO L87 Difference]: Start difference. First operand 62 states and 67 transitions. Second operand 7 states. [2020-10-20 05:59:20,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:59:20,791 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2020-10-20 05:59:20,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 05:59:20,792 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-10-20 05:59:20,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:59:20,796 INFO L225 Difference]: With dead ends: 60 [2020-10-20 05:59:20,796 INFO L226 Difference]: Without dead ends: 60 [2020-10-20 05:59:20,805 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-20 05:59:20,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-20 05:59:20,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-10-20 05:59:20,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-20 05:59:20,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2020-10-20 05:59:20,812 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 22 [2020-10-20 05:59:20,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:59:20,816 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2020-10-20 05:59:20,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 05:59:20,817 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2020-10-20 05:59:20,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-20 05:59:20,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:20,818 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:59:20,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 05:59:20,818 INFO L429 AbstractCegarLoop]: === Iteration 6 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:59:20,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:59:20,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1301246682, now seen corresponding path program 1 times [2020-10-20 05:59:20,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:59:20,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934401562] [2020-10-20 05:59:20,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:59:20,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:20,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:59:20,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:20,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 05:59:20,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:20,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 05:59:20,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:20,966 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 05:59:20,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934401562] [2020-10-20 05:59:20,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:59:20,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 05:59:20,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662675527] [2020-10-20 05:59:20,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 05:59:20,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:59:20,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 05:59:20,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-20 05:59:20,969 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand 7 states. [2020-10-20 05:59:21,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:59:21,188 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions. [2020-10-20 05:59:21,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 05:59:21,188 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-10-20 05:59:21,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:59:21,190 INFO L225 Difference]: With dead ends: 64 [2020-10-20 05:59:21,190 INFO L226 Difference]: Without dead ends: 64 [2020-10-20 05:59:21,190 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-20 05:59:21,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-20 05:59:21,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2020-10-20 05:59:21,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-20 05:59:21,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 67 transitions. [2020-10-20 05:59:21,196 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 67 transitions. Word has length 22 [2020-10-20 05:59:21,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:59:21,197 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 67 transitions. [2020-10-20 05:59:21,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 05:59:21,197 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 67 transitions. [2020-10-20 05:59:21,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-20 05:59:21,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:21,198 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:59:21,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 05:59:21,199 INFO L429 AbstractCegarLoop]: === Iteration 7 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:59:21,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:59:21,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1160832587, now seen corresponding path program 1 times [2020-10-20 05:59:21,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:59:21,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386641947] [2020-10-20 05:59:21,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:59:21,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:21,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:59:21,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:21,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 05:59:21,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:21,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 05:59:21,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:21,275 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 05:59:21,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386641947] [2020-10-20 05:59:21,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251145240] [2020-10-20 05:59:21,276 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 05:59:21,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:21,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-20 05:59:21,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:59:21,411 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 05:59:21,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:59:21,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 7 [2020-10-20 05:59:21,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358367684] [2020-10-20 05:59:21,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 05:59:21,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:59:21,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 05:59:21,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-20 05:59:21,413 INFO L87 Difference]: Start difference. First operand 62 states and 67 transitions. Second operand 7 states. [2020-10-20 05:59:21,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:59:21,556 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2020-10-20 05:59:21,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 05:59:21,557 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-10-20 05:59:21,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:59:21,558 INFO L225 Difference]: With dead ends: 71 [2020-10-20 05:59:21,558 INFO L226 Difference]: Without dead ends: 71 [2020-10-20 05:59:21,559 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-20 05:59:21,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-20 05:59:21,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 65. [2020-10-20 05:59:21,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-20 05:59:21,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2020-10-20 05:59:21,575 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 28 [2020-10-20 05:59:21,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:59:21,575 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2020-10-20 05:59:21,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 05:59:21,576 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2020-10-20 05:59:21,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-20 05:59:21,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:21,577 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, 1, 1, 1, 1, 1, 1] [2020-10-20 05:59:21,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-10-20 05:59:21,791 INFO L429 AbstractCegarLoop]: === Iteration 8 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:59:21,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:59:21,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1628784051, now seen corresponding path program 1 times [2020-10-20 05:59:21,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:59:21,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922165832] [2020-10-20 05:59:21,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:59:21,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:21,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:59:21,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:21,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 05:59:21,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:21,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 05:59:21,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:21,934 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:59:21,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922165832] [2020-10-20 05:59:21,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311680706] [2020-10-20 05:59:21,936 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 05:59:22,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:22,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-20 05:59:22,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:59:22,092 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 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 05:59:22,094 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:59:22,106 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:59:22,107 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:59:22,108 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-20 05:59:22,149 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 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 05:59:22,149 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:59:22,152 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:59:22,154 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 05:59:22,154 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:6, output treesize:5 [2020-10-20 05:59:22,313 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:59:22,314 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2020-10-20 05:59:22,315 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:59:22,331 INFO L625 ElimStorePlain]: treesize reduction 10, result has 60.0 percent of original size [2020-10-20 05:59:22,334 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 05:59:22,338 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 05:59:22,339 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:15 [2020-10-20 05:59:22,340 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 05:59:22,374 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 05:59:22,403 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 05:59:22,516 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:59:22,516 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 58 [2020-10-20 05:59:22,518 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:59:22,548 INFO L625 ElimStorePlain]: treesize reduction 24, result has 50.0 percent of original size [2020-10-20 05:59:22,552 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 05:59:22,554 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 05:59:22,554 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:24 [2020-10-20 05:59:22,557 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 05:59:22,612 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-20 05:59:22,650 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:59:22,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:59:22,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10] total 14 [2020-10-20 05:59:22,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541561372] [2020-10-20 05:59:22,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-20 05:59:22,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:59:22,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-20 05:59:22,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-10-20 05:59:22,654 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand 15 states. [2020-10-20 05:59:23,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:59:23,071 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2020-10-20 05:59:23,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-20 05:59:23,072 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 29 [2020-10-20 05:59:23,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:59:23,073 INFO L225 Difference]: With dead ends: 63 [2020-10-20 05:59:23,074 INFO L226 Difference]: Without dead ends: 63 [2020-10-20 05:59:23,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-10-20 05:59:23,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-20 05:59:23,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-10-20 05:59:23,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-20 05:59:23,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 68 transitions. [2020-10-20 05:59:23,081 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 68 transitions. Word has length 29 [2020-10-20 05:59:23,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:59:23,081 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 68 transitions. [2020-10-20 05:59:23,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-20 05:59:23,082 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 68 transitions. [2020-10-20 05:59:23,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-20 05:59:23,083 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:23,083 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, 1, 1, 1, 1, 1, 1] [2020-10-20 05:59:23,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:59:23,298 INFO L429 AbstractCegarLoop]: === Iteration 9 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:59:23,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:59:23,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1628784052, now seen corresponding path program 1 times [2020-10-20 05:59:23,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:59:23,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812452731] [2020-10-20 05:59:23,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:59:23,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:23,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:59:23,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:23,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 05:59:23,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:23,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 05:59:23,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:23,421 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:59:23,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812452731] [2020-10-20 05:59:23,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037336048] [2020-10-20 05:59:23,422 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 05:59:23,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:23,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 26 conjunts are in the unsatisfiable core [2020-10-20 05:59:23,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:59:23,521 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 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 05:59:23,522 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:59:23,529 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:59:23,530 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:59:23,530 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-10-20 05:59:23,596 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 0 case distinctions, treesize of input 8 treesize of output 7 [2020-10-20 05:59:23,597 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:59:23,599 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:59:23,601 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 05:59:23,601 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:8, output treesize:7 [2020-10-20 05:59:23,692 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 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 05:59:23,692 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:59:23,698 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:59:23,699 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 05:59:23,700 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:14 [2020-10-20 05:59:23,750 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:59:23,751 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 32 [2020-10-20 05:59:23,752 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:59:23,781 INFO L625 ElimStorePlain]: treesize reduction 12, result has 70.0 percent of original size [2020-10-20 05:59:23,784 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-20 05:59:23,791 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 05:59:23,792 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:28 [2020-10-20 05:59:23,793 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-20 05:59:23,836 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-20 05:59:23,841 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: should have been removed by DER [2020-10-20 05:59:23,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-20 05:59:23,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-20 05:59:23,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881707758] [2020-10-20 05:59:23,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 05:59:23,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:59:23,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 05:59:23,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-20 05:59:23,844 INFO L87 Difference]: Start difference. First operand 63 states and 68 transitions. Second operand 8 states. [2020-10-20 05:59:24,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:59:24,410 INFO L93 Difference]: Finished difference Result 86 states and 98 transitions. [2020-10-20 05:59:24,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 05:59:24,412 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-10-20 05:59:24,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:59:24,414 INFO L225 Difference]: With dead ends: 86 [2020-10-20 05:59:24,415 INFO L226 Difference]: Without dead ends: 86 [2020-10-20 05:59:24,416 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=255, Unknown=1, NotChecked=0, Total=306 [2020-10-20 05:59:24,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-20 05:59:24,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 72. [2020-10-20 05:59:24,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-20 05:59:24,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 81 transitions. [2020-10-20 05:59:24,428 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 81 transitions. Word has length 29 [2020-10-20 05:59:24,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:59:24,428 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 81 transitions. [2020-10-20 05:59:24,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 05:59:24,429 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 81 transitions. [2020-10-20 05:59:24,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-20 05:59:24,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:24,430 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:59:24,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:59:24,644 INFO L429 AbstractCegarLoop]: === Iteration 10 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:59:24,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:59:24,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1047301966, now seen corresponding path program 1 times [2020-10-20 05:59:24,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:59:24,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305396076] [2020-10-20 05:59:24,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:59:24,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:24,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:59:24,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:24,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 05:59:24,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:24,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 05:59:24,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:24,742 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:59:24,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305396076] [2020-10-20 05:59:24,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232682841] [2020-10-20 05:59:24,743 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 05:59:24,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:24,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-20 05:59:24,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:59:24,843 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 0 case distinctions, treesize of input 8 treesize of output 7 [2020-10-20 05:59:24,844 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:59:24,854 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:59:24,856 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 05:59:24,856 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:21 [2020-10-20 05:59:24,884 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:59:24,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-20 05:59:24,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2020-10-20 05:59:24,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756494489] [2020-10-20 05:59:24,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 05:59:24,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:59:24,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 05:59:24,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-20 05:59:24,887 INFO L87 Difference]: Start difference. First operand 72 states and 81 transitions. Second operand 6 states. [2020-10-20 05:59:25,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:59:25,038 INFO L93 Difference]: Finished difference Result 81 states and 93 transitions. [2020-10-20 05:59:25,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 05:59:25,039 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-10-20 05:59:25,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:59:25,040 INFO L225 Difference]: With dead ends: 81 [2020-10-20 05:59:25,041 INFO L226 Difference]: Without dead ends: 81 [2020-10-20 05:59:25,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-20 05:59:25,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-20 05:59:25,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 75. [2020-10-20 05:59:25,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-20 05:59:25,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 86 transitions. [2020-10-20 05:59:25,049 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 86 transitions. Word has length 30 [2020-10-20 05:59:25,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:59:25,049 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 86 transitions. [2020-10-20 05:59:25,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 05:59:25,050 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 86 transitions. [2020-10-20 05:59:25,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-20 05:59:25,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:25,051 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:59:25,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:59:25,266 INFO L429 AbstractCegarLoop]: === Iteration 11 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:59:25,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:59:25,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1434727445, now seen corresponding path program 1 times [2020-10-20 05:59:25,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:59:25,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843945529] [2020-10-20 05:59:25,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:59:25,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:25,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:59:25,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:25,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 05:59:25,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:25,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 05:59:25,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:25,340 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-20 05:59:25,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843945529] [2020-10-20 05:59:25,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842441872] [2020-10-20 05:59:25,340 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 05:59:25,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:25,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 05:59:25,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:59:25,468 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:59:25,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-20 05:59:25,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2020-10-20 05:59:25,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421980130] [2020-10-20 05:59:25,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 05:59:25,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:59:25,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 05:59:25,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-20 05:59:25,470 INFO L87 Difference]: Start difference. First operand 75 states and 86 transitions. Second operand 6 states. [2020-10-20 05:59:25,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:59:25,573 INFO L93 Difference]: Finished difference Result 73 states and 79 transitions. [2020-10-20 05:59:25,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 05:59:25,574 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-10-20 05:59:25,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:59:25,575 INFO L225 Difference]: With dead ends: 73 [2020-10-20 05:59:25,575 INFO L226 Difference]: Without dead ends: 73 [2020-10-20 05:59:25,576 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-20 05:59:25,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-20 05:59:25,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 70. [2020-10-20 05:59:25,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-20 05:59:25,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 77 transitions. [2020-10-20 05:59:25,581 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 77 transitions. Word has length 32 [2020-10-20 05:59:25,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:59:25,581 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 77 transitions. [2020-10-20 05:59:25,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 05:59:25,581 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 77 transitions. [2020-10-20 05:59:25,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-20 05:59:25,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:25,583 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:59:25,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-10-20 05:59:25,794 INFO L429 AbstractCegarLoop]: === Iteration 12 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:59:25,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:59:25,795 INFO L82 PathProgramCache]: Analyzing trace with hash -199425899, now seen corresponding path program 1 times [2020-10-20 05:59:25,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:59:25,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280044482] [2020-10-20 05:59:25,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:59:25,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:25,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:59:25,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:25,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 05:59:25,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:25,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 05:59:25,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:25,885 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:59:25,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280044482] [2020-10-20 05:59:25,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58907917] [2020-10-20 05:59:25,886 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 05:59:25,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:25,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 05:59:25,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:59:25,993 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 05:59:25,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:59:25,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 12 [2020-10-20 05:59:25,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792026811] [2020-10-20 05:59:25,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-20 05:59:25,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:59:25,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-20 05:59:25,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-20 05:59:25,995 INFO L87 Difference]: Start difference. First operand 70 states and 77 transitions. Second operand 12 states. [2020-10-20 05:59:26,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:59:26,327 INFO L93 Difference]: Finished difference Result 84 states and 92 transitions. [2020-10-20 05:59:26,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 05:59:26,327 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 34 [2020-10-20 05:59:26,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:59:26,328 INFO L225 Difference]: With dead ends: 84 [2020-10-20 05:59:26,329 INFO L226 Difference]: Without dead ends: 84 [2020-10-20 05:59:26,329 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2020-10-20 05:59:26,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-20 05:59:26,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 79. [2020-10-20 05:59:26,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-20 05:59:26,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 87 transitions. [2020-10-20 05:59:26,334 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 87 transitions. Word has length 34 [2020-10-20 05:59:26,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:59:26,335 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 87 transitions. [2020-10-20 05:59:26,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-20 05:59:26,335 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 87 transitions. [2020-10-20 05:59:26,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-20 05:59:26,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:26,336 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:59:26,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:59:26,545 INFO L429 AbstractCegarLoop]: === Iteration 13 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:59:26,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:59:26,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1157097110, now seen corresponding path program 1 times [2020-10-20 05:59:26,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:59:26,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806541323] [2020-10-20 05:59:26,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:59:26,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:26,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:59:26,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:26,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 05:59:26,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:26,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 05:59:26,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:26,636 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-20 05:59:26,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806541323] [2020-10-20 05:59:26,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041523410] [2020-10-20 05:59:26,638 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 05:59:26,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:26,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 05:59:26,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:59:26,722 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 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 05:59:26,723 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:59:26,725 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:59:26,725 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:59:26,725 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-20 05:59:26,729 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-20 05:59:26,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-20 05:59:26,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2020-10-20 05:59:26,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984621052] [2020-10-20 05:59:26,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 05:59:26,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:59:26,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 05:59:26,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-20 05:59:26,736 INFO L87 Difference]: Start difference. First operand 79 states and 87 transitions. Second operand 5 states. [2020-10-20 05:59:26,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:59:26,805 INFO L93 Difference]: Finished difference Result 78 states and 86 transitions. [2020-10-20 05:59:26,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 05:59:26,805 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-10-20 05:59:26,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:59:26,806 INFO L225 Difference]: With dead ends: 78 [2020-10-20 05:59:26,806 INFO L226 Difference]: Without dead ends: 78 [2020-10-20 05:59:26,807 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-20 05:59:26,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-20 05:59:26,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-10-20 05:59:26,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-20 05:59:26,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2020-10-20 05:59:26,812 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 37 [2020-10-20 05:59:26,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:59:26,813 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2020-10-20 05:59:26,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 05:59:26,813 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2020-10-20 05:59:26,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-20 05:59:26,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:26,814 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:59:27,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:59:27,026 INFO L429 AbstractCegarLoop]: === Iteration 14 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:59:27,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:59:27,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1157097109, now seen corresponding path program 1 times [2020-10-20 05:59:27,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:59:27,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505509943] [2020-10-20 05:59:27,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:59:27,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:27,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:59:27,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:27,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 05:59:27,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:27,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 05:59:27,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:27,134 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-20 05:59:27,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505509943] [2020-10-20 05:59:27,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543920764] [2020-10-20 05:59:27,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:59:27,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:27,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-20 05:59:27,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:59:27,308 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-20 05:59:27,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:59:27,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 11 [2020-10-20 05:59:27,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660313132] [2020-10-20 05:59:27,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-20 05:59:27,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:59:27,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-20 05:59:27,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-20 05:59:27,310 INFO L87 Difference]: Start difference. First operand 78 states and 86 transitions. Second operand 12 states. [2020-10-20 05:59:27,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:59:27,687 INFO L93 Difference]: Finished difference Result 88 states and 97 transitions. [2020-10-20 05:59:27,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 05:59:27,688 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 37 [2020-10-20 05:59:27,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:59:27,689 INFO L225 Difference]: With dead ends: 88 [2020-10-20 05:59:27,689 INFO L226 Difference]: Without dead ends: 88 [2020-10-20 05:59:27,690 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2020-10-20 05:59:27,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-20 05:59:27,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 80. [2020-10-20 05:59:27,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-20 05:59:27,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 89 transitions. [2020-10-20 05:59:27,695 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 89 transitions. Word has length 37 [2020-10-20 05:59:27,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:59:27,696 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 89 transitions. [2020-10-20 05:59:27,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-20 05:59:27,696 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 89 transitions. [2020-10-20 05:59:27,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-20 05:59:27,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:27,697 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:59:27,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-10-20 05:59:27,898 INFO L429 AbstractCegarLoop]: === Iteration 15 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:59:27,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:59:27,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1562437358, now seen corresponding path program 1 times [2020-10-20 05:59:27,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:59:27,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967348694] [2020-10-20 05:59:27,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:59:27,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:28,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:59:28,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:28,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 05:59:28,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:28,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 05:59:28,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:28,034 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 05:59:28,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967348694] [2020-10-20 05:59:28,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538212346] [2020-10-20 05:59:28,035 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 05:59:28,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:28,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-20 05:59:28,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:59:28,188 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 05:59:28,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:59:28,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 14 [2020-10-20 05:59:28,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349235037] [2020-10-20 05:59:28,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-20 05:59:28,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:59:28,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-20 05:59:28,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-20 05:59:28,190 INFO L87 Difference]: Start difference. First operand 80 states and 89 transitions. Second operand 14 states. [2020-10-20 05:59:28,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:59:28,660 INFO L93 Difference]: Finished difference Result 97 states and 106 transitions. [2020-10-20 05:59:28,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-20 05:59:28,661 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 41 [2020-10-20 05:59:28,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:59:28,663 INFO L225 Difference]: With dead ends: 97 [2020-10-20 05:59:28,663 INFO L226 Difference]: Without dead ends: 97 [2020-10-20 05:59:28,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2020-10-20 05:59:28,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-20 05:59:28,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 89. [2020-10-20 05:59:28,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-20 05:59:28,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 98 transitions. [2020-10-20 05:59:28,668 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 98 transitions. Word has length 41 [2020-10-20 05:59:28,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:59:28,669 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 98 transitions. [2020-10-20 05:59:28,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-20 05:59:28,669 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 98 transitions. [2020-10-20 05:59:28,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-20 05:59:28,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:28,670 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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 05:59:28,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-20 05:59:28,875 INFO L429 AbstractCegarLoop]: === Iteration 16 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:59:28,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:59:28,876 INFO L82 PathProgramCache]: Analyzing trace with hash 2018926499, now seen corresponding path program 1 times [2020-10-20 05:59:28,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:59:28,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913436036] [2020-10-20 05:59:28,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:59:28,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:28,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:59:28,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:28,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 05:59:28,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:28,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 05:59:28,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:28,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-20 05:59:28,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:28,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 05:59:28,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:29,008 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-20 05:59:29,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913436036] [2020-10-20 05:59:29,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577523732] [2020-10-20 05:59:29,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 05:59:29,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:29,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 05:59:29,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:59:29,167 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-20 05:59:29,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-20 05:59:29,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 14 [2020-10-20 05:59:29,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281199820] [2020-10-20 05:59:29,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 05:59:29,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:59:29,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 05:59:29,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-20 05:59:29,175 INFO L87 Difference]: Start difference. First operand 89 states and 98 transitions. Second operand 8 states. [2020-10-20 05:59:29,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:59:29,331 INFO L93 Difference]: Finished difference Result 105 states and 114 transitions. [2020-10-20 05:59:29,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 05:59:29,331 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2020-10-20 05:59:29,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:59:29,333 INFO L225 Difference]: With dead ends: 105 [2020-10-20 05:59:29,333 INFO L226 Difference]: Without dead ends: 91 [2020-10-20 05:59:29,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-10-20 05:59:29,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-20 05:59:29,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 89. [2020-10-20 05:59:29,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-20 05:59:29,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 96 transitions. [2020-10-20 05:59:29,344 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 96 transitions. Word has length 45 [2020-10-20 05:59:29,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:59:29,344 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 96 transitions. [2020-10-20 05:59:29,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 05:59:29,345 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 96 transitions. [2020-10-20 05:59:29,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-20 05:59:29,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:29,350 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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, 1, 1, 1, 1] [2020-10-20 05:59:29,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-20 05:59:29,551 INFO L429 AbstractCegarLoop]: === Iteration 17 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:59:29,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:59:29,552 INFO L82 PathProgramCache]: Analyzing trace with hash 777452070, now seen corresponding path program 1 times [2020-10-20 05:59:29,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:59:29,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508882719] [2020-10-20 05:59:29,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:59:29,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:29,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:59:29,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:29,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 05:59:29,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:29,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 05:59:29,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:29,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-20 05:59:29,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:29,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 05:59:29,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:29,810 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-20 05:59:29,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508882719] [2020-10-20 05:59:29,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324730480] [2020-10-20 05:59:29,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 05:59:29,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:29,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 40 conjunts are in the unsatisfiable core [2020-10-20 05:59:29,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:59:29,869 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 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 05:59:29,869 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:59:29,877 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:59:29,880 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 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 05:59:29,881 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 05:59:29,888 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:59:29,888 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:59:29,888 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:19, output treesize:17 [2020-10-20 05:59:29,938 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 05:59:29,940 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:59:29,942 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:59:29,944 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 0 case distinctions, treesize of input 8 treesize of output 7 [2020-10-20 05:59:29,944 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 05:59:29,945 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:59:29,946 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-20 05:59:29,947 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:14, output treesize:7 [2020-10-20 05:59:30,048 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:59:30,049 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-10-20 05:59:30,050 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:59:30,059 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:59:30,066 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2020-10-20 05:59:30,066 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 05:59:30,079 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:59:30,081 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-20 05:59:30,082 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:30, output treesize:23 [2020-10-20 05:59:30,295 INFO L441 ElimStorePlain]: Different costs {0=[|v_old(#length)_BEFORE_CALL_3|], 1=[|v_old(#valid)_BEFORE_CALL_3|]} [2020-10-20 05:59:30,298 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 0 case distinctions, treesize of input 8 treesize of output 7 [2020-10-20 05:59:30,299 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:59:30,306 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:59:30,310 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 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 12 treesize of output 9 [2020-10-20 05:59:30,312 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 05:59:30,317 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:59:30,318 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-20 05:59:30,319 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:20, output treesize:13 [2020-10-20 05:59:30,486 INFO L441 ElimStorePlain]: Different costs {1=[|v_#valid_BEFORE_CALL_7|], 3=[|v_#length_BEFORE_CALL_6|]} [2020-10-20 05:59:30,496 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:59:30,496 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-10-20 05:59:30,497 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:59:30,511 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:59:30,526 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:59:30,527 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 42 [2020-10-20 05:59:30,528 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 05:59:30,573 INFO L625 ElimStorePlain]: treesize reduction 12, result has 76.0 percent of original size [2020-10-20 05:59:30,582 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-20 05:59:30,589 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-10-20 05:59:30,591 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:41, output treesize:38 [2020-10-20 05:59:30,597 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-20 05:59:30,646 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-20 05:59:30,707 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-20 05:59:30,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:59:30,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 22 [2020-10-20 05:59:30,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526808223] [2020-10-20 05:59:30,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-20 05:59:30,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:59:30,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-20 05:59:30,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2020-10-20 05:59:30,710 INFO L87 Difference]: Start difference. First operand 89 states and 96 transitions. Second operand 23 states. [2020-10-20 05:59:31,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:59:31,381 INFO L93 Difference]: Finished difference Result 93 states and 100 transitions. [2020-10-20 05:59:31,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-20 05:59:31,382 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 49 [2020-10-20 05:59:31,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:59:31,383 INFO L225 Difference]: With dead ends: 93 [2020-10-20 05:59:31,384 INFO L226 Difference]: Without dead ends: 93 [2020-10-20 05:59:31,385 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=161, Invalid=709, Unknown=0, NotChecked=0, Total=870 [2020-10-20 05:59:31,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-20 05:59:31,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2020-10-20 05:59:31,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-20 05:59:31,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 98 transitions. [2020-10-20 05:59:31,389 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 98 transitions. Word has length 49 [2020-10-20 05:59:31,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:59:31,389 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 98 transitions. [2020-10-20 05:59:31,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-20 05:59:31,390 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 98 transitions. [2020-10-20 05:59:31,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-20 05:59:31,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:31,390 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2020-10-20 05:59:31,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-20 05:59:31,593 INFO L429 AbstractCegarLoop]: === Iteration 18 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:59:31,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:59:31,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1381024919, now seen corresponding path program 1 times [2020-10-20 05:59:31,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:59:31,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379637652] [2020-10-20 05:59:31,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:59:31,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:31,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:59:31,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:31,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 05:59:31,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:31,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-20 05:59:31,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:31,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-20 05:59:31,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:31,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-20 05:59:31,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:31,728 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-20 05:59:31,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379637652] [2020-10-20 05:59:31,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385594944] [2020-10-20 05:59:31,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:59:31,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:31,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 05:59:31,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:59:31,834 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-20 05:59:31,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 05:59:31,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 12 [2020-10-20 05:59:31,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387256376] [2020-10-20 05:59:31,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-20 05:59:31,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:59:31,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-20 05:59:31,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-20 05:59:31,836 INFO L87 Difference]: Start difference. First operand 91 states and 98 transitions. Second operand 12 states. [2020-10-20 05:59:32,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:59:32,194 INFO L93 Difference]: Finished difference Result 100 states and 107 transitions. [2020-10-20 05:59:32,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-20 05:59:32,195 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 55 [2020-10-20 05:59:32,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:59:32,197 INFO L225 Difference]: With dead ends: 100 [2020-10-20 05:59:32,197 INFO L226 Difference]: Without dead ends: 100 [2020-10-20 05:59:32,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2020-10-20 05:59:32,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-20 05:59:32,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 93. [2020-10-20 05:59:32,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-20 05:59:32,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 100 transitions. [2020-10-20 05:59:32,205 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 100 transitions. Word has length 55 [2020-10-20 05:59:32,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:59:32,206 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 100 transitions. [2020-10-20 05:59:32,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-20 05:59:32,206 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 100 transitions. [2020-10-20 05:59:32,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-20 05:59:32,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:32,208 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 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 05:59:32,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-20 05:59:32,420 INFO L429 AbstractCegarLoop]: === Iteration 19 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:59:32,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:59:32,421 INFO L82 PathProgramCache]: Analyzing trace with hash -135188248, now seen corresponding path program 1 times [2020-10-20 05:59:32,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:59:32,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052531670] [2020-10-20 05:59:32,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:59:32,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:32,462 ERROR L253 erpolLogProxyWrapper]: Interpolant 12 not inductive [2020-10-20 05:59:32,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-20 05:59:32,470 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:876) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:392) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:386) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-10-20 05:59:32,475 INFO L168 Benchmark]: Toolchain (without parser) took 14556.10 ms. Allocated memory was 44.0 MB in the beginning and 89.7 MB in the end (delta: 45.6 MB). Free memory was 24.3 MB in the beginning and 49.0 MB in the end (delta: -24.7 MB). Peak memory consumption was 20.9 MB. Max. memory is 14.3 GB. [2020-10-20 05:59:32,475 INFO L168 Benchmark]: CDTParser took 0.46 ms. Allocated memory is still 32.0 MB. Free memory was 10.5 MB in the beginning and 10.5 MB in the end (delta: 3.1 kB). Peak memory consumption was 3.1 kB. Max. memory is 14.3 GB. [2020-10-20 05:59:32,476 INFO L168 Benchmark]: CACSL2BoogieTranslator took 392.04 ms. Allocated memory is still 44.0 MB. Free memory was 23.4 MB in the beginning and 24.9 MB in the end (delta: -1.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 14.3 GB. [2020-10-20 05:59:32,476 INFO L168 Benchmark]: Boogie Preprocessor took 68.88 ms. Allocated memory is still 44.0 MB. Free memory was 24.9 MB in the beginning and 23.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. [2020-10-20 05:59:32,476 INFO L168 Benchmark]: RCFGBuilder took 504.72 ms. Allocated memory was 44.0 MB in the beginning and 47.2 MB in the end (delta: 3.1 MB). Free memory was 23.0 MB in the beginning and 24.6 MB in the end (delta: -1.6 MB). Peak memory consumption was 14.0 MB. Max. memory is 14.3 GB. [2020-10-20 05:59:32,477 INFO L168 Benchmark]: TraceAbstraction took 13579.92 ms. Allocated memory was 47.2 MB in the beginning and 89.7 MB in the end (delta: 42.5 MB). Free memory was 24.3 MB in the beginning and 49.0 MB in the end (delta: -24.7 MB). Peak memory consumption was 17.8 MB. Max. memory is 14.3 GB. [2020-10-20 05:59:32,479 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46 ms. Allocated memory is still 32.0 MB. Free memory was 10.5 MB in the beginning and 10.5 MB in the end (delta: 3.1 kB). Peak memory consumption was 3.1 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 392.04 ms. Allocated memory is still 44.0 MB. Free memory was 23.4 MB in the beginning and 24.9 MB in the end (delta: -1.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 68.88 ms. Allocated memory is still 44.0 MB. Free memory was 24.9 MB in the beginning and 23.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. * RCFGBuilder took 504.72 ms. Allocated memory was 44.0 MB in the beginning and 47.2 MB in the end (delta: 3.1 MB). Free memory was 23.0 MB in the beginning and 24.6 MB in the end (delta: -1.6 MB). Peak memory consumption was 14.0 MB. Max. memory is 14.3 GB. * TraceAbstraction took 13579.92 ms. Allocated memory was 47.2 MB in the beginning and 89.7 MB in the end (delta: 42.5 MB). Free memory was 24.3 MB in the beginning and 49.0 MB in the end (delta: -24.7 MB). Peak memory consumption was 17.8 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 05:59:35,009 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 05:59:35,013 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 05:59:35,062 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 05:59:35,063 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 05:59:35,078 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 05:59:35,088 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 05:59:35,094 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 05:59:35,097 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 05:59:35,100 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 05:59:35,103 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 05:59:35,105 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 05:59:35,106 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 05:59:35,110 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 05:59:35,113 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 05:59:35,115 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 05:59:35,116 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 05:59:35,117 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 05:59:35,122 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 05:59:35,124 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 05:59:35,125 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 05:59:35,126 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 05:59:35,128 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 05:59:35,129 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 05:59:35,131 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 05:59:35,132 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 05:59:35,132 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 05:59:35,133 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 05:59:35,133 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 05:59:35,134 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 05:59:35,135 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 05:59:35,136 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 05:59:35,136 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 05:59:35,137 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 05:59:35,138 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 05:59:35,138 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 05:59:35,139 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 05:59:35,140 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 05:59:35,140 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 05:59:35,141 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 05:59:35,142 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 05:59:35,143 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2020-10-20 05:59:35,166 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 05:59:35,166 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 05:59:35,168 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 05:59:35,168 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 05:59:35,168 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 05:59:35,169 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 05:59:35,169 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 05:59:35,169 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 05:59:35,169 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 05:59:35,169 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 05:59:35,169 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 05:59:35,170 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 05:59:35,170 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 05:59:35,170 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-20 05:59:35,170 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 05:59:35,170 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 05:59:35,171 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 05:59:35,171 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 05:59:35,171 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 05:59:35,171 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 05:59:35,172 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 05:59:35,172 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 05:59:35,172 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 05:59:35,172 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 05:59:35,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 05:59:35,173 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 05:59:35,173 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 05:59:35,173 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 05:59:35,173 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 05:59:35,173 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 05:59:35,174 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 05:59:35,174 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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 -> 2ef789dd0026a0c0ee3639964867439e8d9c0358 [2020-10-20 05:59:35,434 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 05:59:35,448 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 05:59:35,453 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 05:59:35,455 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 05:59:35,456 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 05:59:35,457 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2.c [2020-10-20 05:59:35,532 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3dddb930/b826105c6e514e10a9810141a562ddea/FLAG27d2c15a0 [2020-10-20 05:59:36,039 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 05:59:36,040 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2.c [2020-10-20 05:59:36,048 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3dddb930/b826105c6e514e10a9810141a562ddea/FLAG27d2c15a0 [2020-10-20 05:59:36,388 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3dddb930/b826105c6e514e10a9810141a562ddea [2020-10-20 05:59:36,392 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 05:59:36,399 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 05:59:36,400 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 05:59:36,400 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 05:59:36,405 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 05:59:36,406 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:59:36" (1/1) ... [2020-10-20 05:59:36,409 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35af25bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:36, skipping insertion in model container [2020-10-20 05:59:36,410 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:59:36" (1/1) ... [2020-10-20 05:59:36,419 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 05:59:36,442 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 05:59:36,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 05:59:36,785 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 05:59:36,811 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 05:59:36,831 INFO L208 MainTranslator]: Completed translation [2020-10-20 05:59:36,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:36 WrapperNode [2020-10-20 05:59:36,832 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 05:59:36,833 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 05:59:36,833 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 05:59:36,834 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 05:59:36,845 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:36" (1/1) ... [2020-10-20 05:59:36,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:36" (1/1) ... [2020-10-20 05:59:36,857 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:36" (1/1) ... [2020-10-20 05:59:36,858 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:36" (1/1) ... [2020-10-20 05:59:36,871 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:36" (1/1) ... [2020-10-20 05:59:36,878 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:36" (1/1) ... [2020-10-20 05:59:36,881 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:36" (1/1) ... [2020-10-20 05:59:36,889 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 05:59:36,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 05:59:36,890 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 05:59:36,890 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 05:59:36,893 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:36" (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 05:59:36,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 05:59:36,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 05:59:36,969 INFO L138 BoogieDeclarations]: Found implementation of procedure bar [2020-10-20 05:59:36,969 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-10-20 05:59:36,969 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 05:59:36,969 INFO L130 BoogieDeclarations]: Found specification of procedure bar [2020-10-20 05:59:36,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-20 05:59:36,970 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-10-20 05:59:36,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 05:59:36,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-20 05:59:36,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 05:59:36,970 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 05:59:36,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 05:59:36,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 05:59:37,463 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 05:59:37,470 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-20 05:59:37,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:59:37 BoogieIcfgContainer [2020-10-20 05:59:37,473 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 05:59:37,475 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 05:59:37,475 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 05:59:37,479 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 05:59:37,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 05:59:36" (1/3) ... [2020-10-20 05:59:37,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e18cc20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:59:37, skipping insertion in model container [2020-10-20 05:59:37,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:59:36" (2/3) ... [2020-10-20 05:59:37,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e18cc20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:59:37, skipping insertion in model container [2020-10-20 05:59:37,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:59:37" (3/3) ... [2020-10-20 05:59:37,483 INFO L111 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength2.c [2020-10-20 05:59:37,497 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 05:59:37,505 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-10-20 05:59:37,522 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-10-20 05:59:37,542 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 05:59:37,542 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 05:59:37,543 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 05:59:37,543 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 05:59:37,543 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 05:59:37,543 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 05:59:37,543 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 05:59:37,543 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 05:59:37,559 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-10-20 05:59:37,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 05:59:37,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:37,571 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:59:37,572 INFO L429 AbstractCegarLoop]: === Iteration 1 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:59:37,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:59:37,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1451105141, now seen corresponding path program 1 times [2020-10-20 05:59:37,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:59:37,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [262258625] [2020-10-20 05:59:37,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-20 05:59:37,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:37,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-20 05:59:37,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:59:37,706 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 05:59:37,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:59:37,746 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 05:59:37,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [262258625] [2020-10-20 05:59:37,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:59:37,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 05:59:37,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59170900] [2020-10-20 05:59:37,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 05:59:37,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:59:37,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 05:59:37,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 05:59:37,772 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 2 states. [2020-10-20 05:59:37,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:59:37,792 INFO L93 Difference]: Finished difference Result 50 states and 55 transitions. [2020-10-20 05:59:37,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 05:59:37,794 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-20 05:59:37,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:59:37,804 INFO L225 Difference]: With dead ends: 50 [2020-10-20 05:59:37,804 INFO L226 Difference]: Without dead ends: 47 [2020-10-20 05:59:37,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 05:59:37,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-20 05:59:37,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-20 05:59:37,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-20 05:59:37,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2020-10-20 05:59:37,853 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 10 [2020-10-20 05:59:37,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:59:37,853 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2020-10-20 05:59:37,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 05:59:37,854 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2020-10-20 05:59:37,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 05:59:37,855 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:37,855 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:59:38,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 05:59:38,068 INFO L429 AbstractCegarLoop]: === Iteration 2 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:59:38,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:59:38,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1450777440, now seen corresponding path program 1 times [2020-10-20 05:59:38,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:59:38,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [829309267] [2020-10-20 05:59:38,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-20 05:59:38,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:38,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 05:59:38,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:59:38,146 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 05:59:38,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:59:38,172 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 05:59:38,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [829309267] [2020-10-20 05:59:38,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:59:38,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-20 05:59:38,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458030542] [2020-10-20 05:59:38,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 05:59:38,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:59:38,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 05:59:38,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 05:59:38,177 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand 4 states. [2020-10-20 05:59:38,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:59:38,309 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2020-10-20 05:59:38,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 05:59:38,311 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-20 05:59:38,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:59:38,314 INFO L225 Difference]: With dead ends: 54 [2020-10-20 05:59:38,315 INFO L226 Difference]: Without dead ends: 54 [2020-10-20 05:59:38,316 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-20 05:59:38,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-20 05:59:38,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2020-10-20 05:59:38,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-20 05:59:38,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2020-10-20 05:59:38,330 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 10 [2020-10-20 05:59:38,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:59:38,331 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2020-10-20 05:59:38,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 05:59:38,332 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2020-10-20 05:59:38,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 05:59:38,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:38,333 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:59:38,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-20 05:59:38,549 INFO L429 AbstractCegarLoop]: === Iteration 3 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:59:38,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:59:38,550 INFO L82 PathProgramCache]: Analyzing trace with hash 2027141917, now seen corresponding path program 1 times [2020-10-20 05:59:38,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:59:38,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2049638301] [2020-10-20 05:59:38,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-20 05:59:38,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:38,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 05:59:38,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:59:38,657 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 05:59:38,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:59:38,720 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 05:59:38,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2049638301] [2020-10-20 05:59:38,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:59:38,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-10-20 05:59:38,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845723539] [2020-10-20 05:59:38,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 05:59:38,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:59:38,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 05:59:38,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-20 05:59:38,723 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand 8 states. [2020-10-20 05:59:39,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:59:39,024 INFO L93 Difference]: Finished difference Result 60 states and 66 transitions. [2020-10-20 05:59:39,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 05:59:39,028 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-10-20 05:59:39,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:59:39,031 INFO L225 Difference]: With dead ends: 60 [2020-10-20 05:59:39,031 INFO L226 Difference]: Without dead ends: 60 [2020-10-20 05:59:39,032 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-20 05:59:39,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-20 05:59:39,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2020-10-20 05:59:39,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-20 05:59:39,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2020-10-20 05:59:39,051 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 11 [2020-10-20 05:59:39,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:59:39,053 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2020-10-20 05:59:39,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 05:59:39,054 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2020-10-20 05:59:39,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 05:59:39,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:39,056 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:59:39,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-20 05:59:39,266 INFO L429 AbstractCegarLoop]: === Iteration 4 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:59:39,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:59:39,267 INFO L82 PathProgramCache]: Analyzing trace with hash -950239869, now seen corresponding path program 1 times [2020-10-20 05:59:39,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:59:39,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [674354487] [2020-10-20 05:59:39,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-20 05:59:39,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:39,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 05:59:39,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:59:39,398 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 05:59:39,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:59:39,514 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 05:59:39,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [674354487] [2020-10-20 05:59:39,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:59:39,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2020-10-20 05:59:39,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757528258] [2020-10-20 05:59:39,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-20 05:59:39,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:59:39,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-20 05:59:39,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-20 05:59:39,518 INFO L87 Difference]: Start difference. First operand 58 states and 66 transitions. Second operand 12 states. [2020-10-20 05:59:39,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:59:39,893 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2020-10-20 05:59:39,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 05:59:39,896 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 14 [2020-10-20 05:59:39,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:59:39,897 INFO L225 Difference]: With dead ends: 65 [2020-10-20 05:59:39,897 INFO L226 Difference]: Without dead ends: 65 [2020-10-20 05:59:39,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-10-20 05:59:39,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-20 05:59:39,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2020-10-20 05:59:39,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-20 05:59:39,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 70 transitions. [2020-10-20 05:59:39,921 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 70 transitions. Word has length 14 [2020-10-20 05:59:39,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:59:39,922 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 70 transitions. [2020-10-20 05:59:39,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-20 05:59:39,922 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 70 transitions. [2020-10-20 05:59:39,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-20 05:59:39,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:39,923 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:59:40,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-20 05:59:40,139 INFO L429 AbstractCegarLoop]: === Iteration 5 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:59:40,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:59:40,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1281570102, now seen corresponding path program 1 times [2020-10-20 05:59:40,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:59:40,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1514859180] [2020-10-20 05:59:40,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-10-20 05:59:40,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:40,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 05:59:40,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:59:40,245 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 05:59:40,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 05:59:40,364 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 05:59:40,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1514859180] [2020-10-20 05:59:40,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:59:40,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-10-20 05:59:40,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959490066] [2020-10-20 05:59:40,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 05:59:40,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 05:59:40,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 05:59:40,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 05:59:40,369 INFO L87 Difference]: Start difference. First operand 63 states and 70 transitions. Second operand 5 states. [2020-10-20 05:59:40,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:59:40,412 INFO L93 Difference]: Finished difference Result 72 states and 79 transitions. [2020-10-20 05:59:40,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 05:59:40,412 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-20 05:59:40,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:59:40,414 INFO L225 Difference]: With dead ends: 72 [2020-10-20 05:59:40,414 INFO L226 Difference]: Without dead ends: 72 [2020-10-20 05:59:40,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 05:59:40,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-20 05:59:40,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 68. [2020-10-20 05:59:40,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-20 05:59:40,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 75 transitions. [2020-10-20 05:59:40,430 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 75 transitions. Word has length 20 [2020-10-20 05:59:40,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:59:40,430 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 75 transitions. [2020-10-20 05:59:40,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 05:59:40,431 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 75 transitions. [2020-10-20 05:59:40,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-20 05:59:40,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:59:40,432 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:59:40,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-20 05:59:40,634 INFO L429 AbstractCegarLoop]: === Iteration 6 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-20 05:59:40,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:59:40,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1281599893, now seen corresponding path program 1 times [2020-10-20 05:59:40,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 05:59:40,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1361590267] [2020-10-20 05:59:40,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-10-20 05:59:40,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:40,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 05:59:40,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:59:40,743 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 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 05:59:40,743 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:59:40,758 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:59:40,764 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 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 05:59:40,765 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 05:59:40,782 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:59:40,783 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:59:40,783 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:19, output treesize:17 [2020-10-20 05:59:42,931 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 05:59:42,932 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:59:42,936 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:59:42,945 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 0 case distinctions, treesize of input 8 treesize of output 7 [2020-10-20 05:59:42,946 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 05:59:42,949 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:59:42,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1361590267] [2020-10-20 05:59:42,953 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 05:59:42,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1450767888] [2020-10-20 05:59:42,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-20 05:59:43,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:43,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 05:59:43,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:59:43,141 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 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 05:59:43,143 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:59:43,156 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:59:43,163 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 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 05:59:43,163 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 05:59:43,176 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:59:43,177 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:59:43,177 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:19, output treesize:17 [2020-10-20 05:59:43,216 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 05:59:43,218 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:59:43,222 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:59:43,225 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 0 case distinctions, treesize of input 8 treesize of output 7 [2020-10-20 05:59:43,226 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 05:59:43,230 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:59:43,231 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 05:59:43,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726664018] [2020-10-20 05:59:43,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 05:59:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:59:43,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 05:59:43,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 05:59:43,297 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 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 05:59:43,297 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:59:43,312 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:59:43,317 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 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-20 05:59:43,318 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 05:59:43,330 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:59:43,330 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 05:59:43,331 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:19, output treesize:17 [2020-10-20 05:59:43,395 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 05:59:43,398 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 05:59:43,403 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:59:43,407 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 0 case distinctions, treesize of input 8 treesize of output 7 [2020-10-20 05:59:43,407 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-20 05:59:43,410 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 05:59:43,411 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 05:59:43,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:59:43,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-20 05:59:43,412 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-10-20 05:59:43,412 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 05:59:44,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 mathsat -unsat_core_generation=3,8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-20 05:59:44,042 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-20 05:59:44,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 05:59:44 BoogieIcfgContainer [2020-10-20 05:59:44,043 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 05:59:44,043 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 05:59:44,043 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 05:59:44,044 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 05:59:44,044 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:59:37" (3/4) ... [2020-10-20 05:59:44,047 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 05:59:44,047 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 05:59:44,048 INFO L168 Benchmark]: Toolchain (without parser) took 7654.90 ms. Allocated memory was 34.1 MB in the beginning and 51.4 MB in the end (delta: 17.3 MB). Free memory was 11.3 MB in the beginning and 26.2 MB in the end (delta: -14.9 MB). Peak memory consumption was 2.4 MB. Max. memory is 14.3 GB. [2020-10-20 05:59:44,049 INFO L168 Benchmark]: CDTParser took 0.42 ms. Allocated memory is still 33.0 MB. Free memory was 17.8 MB in the beginning and 17.8 MB in the end (delta: 41.7 kB). Peak memory consumption was 41.7 kB. Max. memory is 14.3 GB. [2020-10-20 05:59:44,050 INFO L168 Benchmark]: CACSL2BoogieTranslator took 432.69 ms. Allocated memory was 34.1 MB in the beginning and 43.0 MB in the end (delta: 8.9 MB). Free memory was 10.4 MB in the beginning and 22.0 MB in the end (delta: -11.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 14.3 GB. [2020-10-20 05:59:44,051 INFO L168 Benchmark]: Boogie Preprocessor took 55.68 ms. Allocated memory is still 43.0 MB. Free memory was 21.9 MB in the beginning and 19.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 05:59:44,052 INFO L168 Benchmark]: RCFGBuilder took 583.86 ms. Allocated memory was 43.0 MB in the beginning and 45.1 MB in the end (delta: 2.1 MB). Free memory was 19.9 MB in the beginning and 26.6 MB in the end (delta: -6.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 14.3 GB. [2020-10-20 05:59:44,052 INFO L168 Benchmark]: TraceAbstraction took 6568.31 ms. Allocated memory was 45.1 MB in the beginning and 51.4 MB in the end (delta: 6.3 MB). Free memory was 25.8 MB in the beginning and 26.7 MB in the end (delta: -826.8 kB). Peak memory consumption was 5.5 MB. Max. memory is 14.3 GB. [2020-10-20 05:59:44,053 INFO L168 Benchmark]: Witness Printer took 3.56 ms. Allocated memory is still 51.4 MB. Free memory was 26.7 MB in the beginning and 26.2 MB in the end (delta: 439.1 kB). Peak memory consumption was 439.1 kB. Max. memory is 14.3 GB. [2020-10-20 05:59:44,057 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42 ms. Allocated memory is still 33.0 MB. Free memory was 17.8 MB in the beginning and 17.8 MB in the end (delta: 41.7 kB). Peak memory consumption was 41.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 432.69 ms. Allocated memory was 34.1 MB in the beginning and 43.0 MB in the end (delta: 8.9 MB). Free memory was 10.4 MB in the beginning and 22.0 MB in the end (delta: -11.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 55.68 ms. Allocated memory is still 43.0 MB. Free memory was 21.9 MB in the beginning and 19.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. * RCFGBuilder took 583.86 ms. Allocated memory was 43.0 MB in the beginning and 45.1 MB in the end (delta: 2.1 MB). Free memory was 19.9 MB in the beginning and 26.6 MB in the end (delta: -6.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 14.3 GB. * TraceAbstraction took 6568.31 ms. Allocated memory was 45.1 MB in the beginning and 51.4 MB in the end (delta: 6.3 MB). Free memory was 25.8 MB in the beginning and 26.7 MB in the end (delta: -826.8 kB). Peak memory consumption was 5.5 MB. Max. memory is 14.3 GB. * Witness Printer took 3.56 ms. Allocated memory is still 51.4 MB. Free memory was 26.7 MB in the beginning and 26.2 MB in the end (delta: 439.1 kB). Peak memory consumption was 439.1 kB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 34]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L32] int i, b[100]; [L33] i = 0 [L33] COND TRUE i < 100 [L34] CALL, EXPR foo(i, b, i) [L21] int a[n], i; [L22] i = 0 [L22] COND FALSE !(i < size) [L25] CALL bar(a, size) [L12] int res = 0, i; [L13] i = 0 [L13] COND FALSE !(i < size) [L16] return res; [L25] RET bar(a, size) [L25] COND FALSE !(bar(a, size)) [L28] return i; [L28] return i; [L34] RET, EXPR foo(i, b, i) [L34] b[i] = foo(i, b, i) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 50 locations, 11 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 6.4s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 218 SDtfs, 96 SDslu, 644 SDs, 0 SdLazy, 255 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 129 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 10 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 65 NumberOfCodeBlocks, 65 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 120 ConstructedInterpolants, 0 QuantifiedInterpolants, 2747 SizeOfPredicates, 9 NumberOfNonLiveVariables, 255 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...