./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-properties/list-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -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/list-properties/list-1.i -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 6ba4928d27614bbdf140b58cd6ad1ef338e79461 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 -Xmx12G -Xms1G -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/list-properties/list-1.i -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 6ba4928d27614bbdf140b58cd6ad1ef338e79461 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 18:14:46,506 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:14:46,508 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:14:46,538 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:14:46,538 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:14:46,539 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:14:46,541 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:14:46,543 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:14:46,545 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:14:46,546 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:14:46,547 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:14:46,549 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:14:46,549 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:14:46,551 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:14:46,552 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:14:46,553 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:14:46,554 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:14:46,556 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:14:46,558 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:14:46,560 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:14:46,562 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:14:46,563 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:14:46,565 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:14:46,566 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:14:46,569 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:14:46,569 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:14:46,569 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:14:46,571 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:14:46,571 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:14:46,572 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:14:46,573 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:14:46,574 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:14:46,575 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:14:46,576 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:14:46,578 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:14:46,578 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:14:46,579 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:14:46,579 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:14:46,579 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:14:46,581 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:14:46,584 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:14:46,586 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-19 18:14:46,634 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:14:46,636 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:14:46,638 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:14:46,638 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:14:46,639 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:14:46,639 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:14:46,639 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:14:46,639 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:14:46,640 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:14:46,640 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:14:46,641 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:14:46,642 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 18:14:46,642 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 18:14:46,643 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-19 18:14:46,643 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:14:46,643 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 18:14:46,644 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:14:46,644 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:14:46,644 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:14:46,644 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:14:46,646 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:14:46,646 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:14:46,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:14:46,647 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:14:46,648 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:14:46,648 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:14:46,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 18:14:46,648 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:14:46,649 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 -> 6ba4928d27614bbdf140b58cd6ad1ef338e79461 [2020-10-19 18:14:46,998 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:14:47,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:14:47,021 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:14:47,024 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:14:47,027 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:14:47,028 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/list-1.i [2020-10-19 18:14:47,090 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fea2a09e0/e3b31f24236041069188890baeaa6134/FLAG8361d8a2c [2020-10-19 18:14:47,638 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:14:47,639 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/list-1.i [2020-10-19 18:14:47,652 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fea2a09e0/e3b31f24236041069188890baeaa6134/FLAG8361d8a2c [2020-10-19 18:14:47,962 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fea2a09e0/e3b31f24236041069188890baeaa6134 [2020-10-19 18:14:47,965 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:14:47,972 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 18:14:47,973 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:14:47,974 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:14:47,977 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:14:47,978 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:14:47" (1/1) ... [2020-10-19 18:14:47,982 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21367e29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:14:47, skipping insertion in model container [2020-10-19 18:14:47,982 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:14:47" (1/1) ... [2020-10-19 18:14:47,990 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:14:48,050 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:14:48,443 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:14:48,455 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:14:48,518 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:14:48,593 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:14:48,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:14:48 WrapperNode [2020-10-19 18:14:48,594 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:14:48,595 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:14:48,595 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:14:48,595 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:14:48,610 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:14:48" (1/1) ... [2020-10-19 18:14:48,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:14:48" (1/1) ... [2020-10-19 18:14:48,629 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:14:48" (1/1) ... [2020-10-19 18:14:48,629 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:14:48" (1/1) ... [2020-10-19 18:14:48,648 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:14:48" (1/1) ... [2020-10-19 18:14:48,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:14:48" (1/1) ... [2020-10-19 18:14:48,657 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:14:48" (1/1) ... [2020-10-19 18:14:48,665 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:14:48,666 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:14:48,667 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:14:48,667 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:14:48,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:14:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:14:48,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 18:14:48,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:14:48,735 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-19 18:14:48,735 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-19 18:14:48,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-19 18:14:48,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-19 18:14:48,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-19 18:14:48,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-19 18:14:48,737 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-19 18:14:48,737 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 18:14:48,737 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-19 18:14:48,737 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-19 18:14:48,738 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-19 18:14:48,738 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-19 18:14:48,738 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-19 18:14:48,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 18:14:48,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-19 18:14:48,739 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-19 18:14:48,739 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-19 18:14:48,739 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-19 18:14:48,739 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-19 18:14:48,740 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-19 18:14:48,740 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-19 18:14:48,740 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-19 18:14:48,740 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-19 18:14:48,741 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-19 18:14:48,741 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-19 18:14:48,741 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-19 18:14:48,741 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-19 18:14:48,742 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-19 18:14:48,742 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-19 18:14:48,742 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-19 18:14:48,742 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-19 18:14:48,742 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-19 18:14:48,743 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-19 18:14:48,743 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-19 18:14:48,743 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-19 18:14:48,743 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-19 18:14:48,744 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-19 18:14:48,744 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-19 18:14:48,744 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-19 18:14:48,744 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-19 18:14:48,744 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-19 18:14:48,745 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-19 18:14:48,745 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-19 18:14:48,745 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-19 18:14:48,745 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-19 18:14:48,745 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-19 18:14:48,746 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-19 18:14:48,746 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-19 18:14:48,746 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-19 18:14:48,746 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-19 18:14:48,746 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-19 18:14:48,747 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-19 18:14:48,747 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-19 18:14:48,747 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-19 18:14:48,747 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-19 18:14:48,747 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-19 18:14:48,748 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-19 18:14:48,748 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-19 18:14:48,748 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-19 18:14:48,748 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-19 18:14:48,749 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-19 18:14:48,749 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-19 18:14:48,749 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-19 18:14:48,749 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-19 18:14:48,749 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-19 18:14:48,750 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-19 18:14:48,750 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-19 18:14:48,750 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-19 18:14:48,750 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-19 18:14:48,750 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-19 18:14:48,751 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-19 18:14:48,751 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-19 18:14:48,751 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-19 18:14:48,751 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-19 18:14:48,751 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-19 18:14:48,752 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-19 18:14:48,752 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-19 18:14:48,752 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-19 18:14:48,752 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-19 18:14:48,752 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-19 18:14:48,753 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-19 18:14:48,753 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-19 18:14:48,753 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-19 18:14:48,753 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-19 18:14:48,754 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-19 18:14:48,754 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-19 18:14:48,754 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-19 18:14:48,754 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-19 18:14:48,754 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-19 18:14:48,755 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-19 18:14:48,755 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-19 18:14:48,755 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-19 18:14:48,755 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-19 18:14:48,755 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-19 18:14:48,756 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-19 18:14:48,756 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-19 18:14:48,756 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-19 18:14:48,756 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-19 18:14:48,756 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-19 18:14:48,757 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-19 18:14:48,757 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-19 18:14:48,757 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-19 18:14:48,757 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-19 18:14:48,757 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-19 18:14:48,758 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-19 18:14:48,758 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-19 18:14:48,758 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-19 18:14:48,758 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-19 18:14:48,758 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-19 18:14:48,758 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-19 18:14:48,759 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-19 18:14:48,759 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-19 18:14:48,759 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-19 18:14:48,759 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-19 18:14:48,759 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-19 18:14:48,760 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-19 18:14:48,760 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-19 18:14:48,760 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-19 18:14:48,760 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-19 18:14:48,760 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-19 18:14:48,761 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-19 18:14:48,761 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-19 18:14:48,761 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 18:14:48,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 18:14:48,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 18:14:48,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-19 18:14:48,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-19 18:14:48,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 18:14:48,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 18:14:48,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 18:14:48,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:14:48,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 18:14:49,144 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-19 18:14:49,352 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:14:49,353 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-19 18:14:49,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:14:49 BoogieIcfgContainer [2020-10-19 18:14:49,355 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:14:49,359 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:14:49,360 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:14:49,363 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:14:49,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:14:47" (1/3) ... [2020-10-19 18:14:49,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@621ec6c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:14:49, skipping insertion in model container [2020-10-19 18:14:49,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:14:48" (2/3) ... [2020-10-19 18:14:49,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@621ec6c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:14:49, skipping insertion in model container [2020-10-19 18:14:49,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:14:49" (3/3) ... [2020-10-19 18:14:49,367 INFO L111 eAbstractionObserver]: Analyzing ICFG list-1.i [2020-10-19 18:14:49,378 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:14:49,387 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 26 error locations. [2020-10-19 18:14:49,399 INFO L253 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2020-10-19 18:14:49,416 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:14:49,416 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 18:14:49,417 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:14:49,417 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:14:49,417 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:14:49,417 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:14:49,418 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:14:49,418 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:14:49,437 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2020-10-19 18:14:49,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-19 18:14:49,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:14:49,448 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:14:49,449 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:14:49,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:14:49,456 INFO L82 PathProgramCache]: Analyzing trace with hash -529419567, now seen corresponding path program 1 times [2020-10-19 18:14:49,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:14:49,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68477976] [2020-10-19 18:14:49,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:14:49,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:14:49,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:14:49,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:14:49,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:14:49,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68477976] [2020-10-19 18:14:49,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:14:49,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:14:49,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982899991] [2020-10-19 18:14:49,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:14:49,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:14:49,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:14:49,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:14:49,760 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 5 states. [2020-10-19 18:14:50,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:14:50,047 INFO L93 Difference]: Finished difference Result 82 states and 90 transitions. [2020-10-19 18:14:50,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:14:50,050 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-19 18:14:50,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:14:50,059 INFO L225 Difference]: With dead ends: 82 [2020-10-19 18:14:50,060 INFO L226 Difference]: Without dead ends: 74 [2020-10-19 18:14:50,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:14:50,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-19 18:14:50,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 69. [2020-10-19 18:14:50,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-19 18:14:50,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 79 transitions. [2020-10-19 18:14:50,110 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 79 transitions. Word has length 11 [2020-10-19 18:14:50,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:14:50,111 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 79 transitions. [2020-10-19 18:14:50,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:14:50,111 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 79 transitions. [2020-10-19 18:14:50,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-19 18:14:50,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:14:50,112 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:14:50,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 18:14:50,113 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:14:50,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:14:50,114 INFO L82 PathProgramCache]: Analyzing trace with hash -529419566, now seen corresponding path program 1 times [2020-10-19 18:14:50,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:14:50,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41021576] [2020-10-19 18:14:50,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:14:50,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:14:50,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:14:50,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:14:50,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:14:50,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41021576] [2020-10-19 18:14:50,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:14:50,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:14:50,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735698292] [2020-10-19 18:14:50,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:14:50,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:14:50,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:14:50,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:14:50,229 INFO L87 Difference]: Start difference. First operand 69 states and 79 transitions. Second operand 5 states. [2020-10-19 18:14:50,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:14:50,465 INFO L93 Difference]: Finished difference Result 93 states and 101 transitions. [2020-10-19 18:14:50,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:14:50,465 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-19 18:14:50,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:14:50,469 INFO L225 Difference]: With dead ends: 93 [2020-10-19 18:14:50,470 INFO L226 Difference]: Without dead ends: 93 [2020-10-19 18:14:50,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:14:50,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-19 18:14:50,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 83. [2020-10-19 18:14:50,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-19 18:14:50,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2020-10-19 18:14:50,482 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 11 [2020-10-19 18:14:50,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:14:50,483 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2020-10-19 18:14:50,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:14:50,484 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2020-10-19 18:14:50,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-19 18:14:50,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:14:50,485 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:14:50,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 18:14:50,486 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:14:50,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:14:50,486 INFO L82 PathProgramCache]: Analyzing trace with hash 745437086, now seen corresponding path program 1 times [2020-10-19 18:14:50,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:14:50,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520863437] [2020-10-19 18:14:50,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:14:50,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:14:50,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:14:50,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:14:50,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:14:50,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520863437] [2020-10-19 18:14:50,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:14:50,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-19 18:14:50,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591867008] [2020-10-19 18:14:50,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:14:50,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:14:50,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:14:50,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:14:50,596 INFO L87 Difference]: Start difference. First operand 83 states and 91 transitions. Second operand 7 states. [2020-10-19 18:14:50,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:14:50,876 INFO L93 Difference]: Finished difference Result 119 states and 129 transitions. [2020-10-19 18:14:50,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:14:50,877 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-19 18:14:50,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:14:50,879 INFO L225 Difference]: With dead ends: 119 [2020-10-19 18:14:50,879 INFO L226 Difference]: Without dead ends: 119 [2020-10-19 18:14:50,879 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:14:50,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-19 18:14:50,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 86. [2020-10-19 18:14:50,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-19 18:14:50,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 94 transitions. [2020-10-19 18:14:50,889 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 94 transitions. Word has length 19 [2020-10-19 18:14:50,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:14:50,890 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 94 transitions. [2020-10-19 18:14:50,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:14:50,891 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 94 transitions. [2020-10-19 18:14:50,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-19 18:14:50,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:14:50,892 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:14:50,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 18:14:50,893 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:14:50,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:14:50,893 INFO L82 PathProgramCache]: Analyzing trace with hash 2009276100, now seen corresponding path program 1 times [2020-10-19 18:14:50,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:14:50,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825289616] [2020-10-19 18:14:50,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:14:50,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:14:50,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:14:50,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:14:50,995 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:14:50,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825289616] [2020-10-19 18:14:50,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:14:50,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 18:14:50,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47051595] [2020-10-19 18:14:50,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:14:50,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:14:50,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:14:50,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:14:50,999 INFO L87 Difference]: Start difference. First operand 86 states and 94 transitions. Second operand 7 states. [2020-10-19 18:14:51,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:14:51,327 INFO L93 Difference]: Finished difference Result 110 states and 120 transitions. [2020-10-19 18:14:51,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:14:51,328 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-19 18:14:51,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:14:51,329 INFO L225 Difference]: With dead ends: 110 [2020-10-19 18:14:51,329 INFO L226 Difference]: Without dead ends: 110 [2020-10-19 18:14:51,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:14:51,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-19 18:14:51,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 89. [2020-10-19 18:14:51,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-19 18:14:51,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 100 transitions. [2020-10-19 18:14:51,339 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 100 transitions. Word has length 19 [2020-10-19 18:14:51,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:14:51,339 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 100 transitions. [2020-10-19 18:14:51,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:14:51,340 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 100 transitions. [2020-10-19 18:14:51,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-19 18:14:51,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:14:51,341 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:14:51,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 18:14:51,342 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:14:51,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:14:51,343 INFO L82 PathProgramCache]: Analyzing trace with hash 2009276101, now seen corresponding path program 1 times [2020-10-19 18:14:51,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:14:51,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528570598] [2020-10-19 18:14:51,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:14:51,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:14:51,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:14:51,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:14:51,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:14:51,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528570598] [2020-10-19 18:14:51,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:14:51,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 18:14:51,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309252126] [2020-10-19 18:14:51,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:14:51,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:14:51,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:14:51,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:14:51,456 INFO L87 Difference]: Start difference. First operand 89 states and 100 transitions. Second operand 7 states. [2020-10-19 18:14:51,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:14:51,920 INFO L93 Difference]: Finished difference Result 111 states and 122 transitions. [2020-10-19 18:14:51,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 18:14:51,922 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-19 18:14:51,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:14:51,924 INFO L225 Difference]: With dead ends: 111 [2020-10-19 18:14:51,924 INFO L226 Difference]: Without dead ends: 111 [2020-10-19 18:14:51,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:14:51,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-19 18:14:51,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 80. [2020-10-19 18:14:51,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-19 18:14:51,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 89 transitions. [2020-10-19 18:14:51,941 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 89 transitions. Word has length 19 [2020-10-19 18:14:51,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:14:51,943 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 89 transitions. [2020-10-19 18:14:51,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:14:51,943 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 89 transitions. [2020-10-19 18:14:51,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-19 18:14:51,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:14:51,945 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:14:51,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-19 18:14:51,946 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:14:51,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:14:51,946 INFO L82 PathProgramCache]: Analyzing trace with hash -942076661, now seen corresponding path program 1 times [2020-10-19 18:14:51,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:14:51,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090991172] [2020-10-19 18:14:51,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:14:51,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:14:52,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:14:52,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:14:52,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:14:52,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090991172] [2020-10-19 18:14:52,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:14:52,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-19 18:14:52,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492354077] [2020-10-19 18:14:52,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:14:52,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:14:52,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:14:52,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:14:52,072 INFO L87 Difference]: Start difference. First operand 80 states and 89 transitions. Second operand 7 states. [2020-10-19 18:14:52,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:14:52,285 INFO L93 Difference]: Finished difference Result 107 states and 116 transitions. [2020-10-19 18:14:52,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:14:52,285 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-10-19 18:14:52,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:14:52,287 INFO L225 Difference]: With dead ends: 107 [2020-10-19 18:14:52,287 INFO L226 Difference]: Without dead ends: 107 [2020-10-19 18:14:52,287 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:14:52,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-19 18:14:52,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 82. [2020-10-19 18:14:52,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-19 18:14:52,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2020-10-19 18:14:52,294 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 21 [2020-10-19 18:14:52,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:14:52,294 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2020-10-19 18:14:52,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:14:52,294 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2020-10-19 18:14:52,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-19 18:14:52,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:14:52,296 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:14:52,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-19 18:14:52,296 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:14:52,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:14:52,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1237890890, now seen corresponding path program 1 times [2020-10-19 18:14:52,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:14:52,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215981050] [2020-10-19 18:14:52,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:14:52,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:14:52,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:14:52,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:14:52,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:14:52,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215981050] [2020-10-19 18:14:52,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:14:52,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 18:14:52,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021844924] [2020-10-19 18:14:52,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:14:52,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:14:52,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:14:52,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:14:52,372 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand 7 states. [2020-10-19 18:14:52,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:14:52,632 INFO L93 Difference]: Finished difference Result 91 states and 99 transitions. [2020-10-19 18:14:52,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:14:52,633 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-10-19 18:14:52,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:14:52,634 INFO L225 Difference]: With dead ends: 91 [2020-10-19 18:14:52,634 INFO L226 Difference]: Without dead ends: 91 [2020-10-19 18:14:52,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:14:52,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-19 18:14:52,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 80. [2020-10-19 18:14:52,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-19 18:14:52,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 89 transitions. [2020-10-19 18:14:52,650 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 89 transitions. Word has length 21 [2020-10-19 18:14:52,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:14:52,651 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 89 transitions. [2020-10-19 18:14:52,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:14:52,651 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 89 transitions. [2020-10-19 18:14:52,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-19 18:14:52,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:14:52,653 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:14:52,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-19 18:14:52,654 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:14:52,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:14:52,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1237890889, now seen corresponding path program 1 times [2020-10-19 18:14:52,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:14:52,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626189799] [2020-10-19 18:14:52,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:14:52,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:14:52,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:14:52,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:14:52,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:14:52,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626189799] [2020-10-19 18:14:52,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:14:52,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 18:14:52,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909136806] [2020-10-19 18:14:52,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:14:52,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:14:52,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:14:52,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:14:52,786 INFO L87 Difference]: Start difference. First operand 80 states and 89 transitions. Second operand 7 states. [2020-10-19 18:14:53,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:14:53,128 INFO L93 Difference]: Finished difference Result 88 states and 97 transitions. [2020-10-19 18:14:53,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 18:14:53,129 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-10-19 18:14:53,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:14:53,130 INFO L225 Difference]: With dead ends: 88 [2020-10-19 18:14:53,130 INFO L226 Difference]: Without dead ends: 88 [2020-10-19 18:14:53,131 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:14:53,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-19 18:14:53,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 68. [2020-10-19 18:14:53,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-19 18:14:53,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2020-10-19 18:14:53,138 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 21 [2020-10-19 18:14:53,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:14:53,138 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2020-10-19 18:14:53,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:14:53,139 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2020-10-19 18:14:53,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-19 18:14:53,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:14:53,140 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] [2020-10-19 18:14:53,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-19 18:14:53,141 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:14:53,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:14:53,141 INFO L82 PathProgramCache]: Analyzing trace with hash 851943190, now seen corresponding path program 1 times [2020-10-19 18:14:53,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:14:53,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098726048] [2020-10-19 18:14:53,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:14:53,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:14:53,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:14:53,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:14:53,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:14:53,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098726048] [2020-10-19 18:14:53,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:14:53,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-19 18:14:53,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465260850] [2020-10-19 18:14:53,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:14:53,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:14:53,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:14:53,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:14:53,214 INFO L87 Difference]: Start difference. First operand 68 states and 76 transitions. Second operand 7 states. [2020-10-19 18:14:53,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:14:53,420 INFO L93 Difference]: Finished difference Result 92 states and 99 transitions. [2020-10-19 18:14:53,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:14:53,420 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-19 18:14:53,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:14:53,422 INFO L225 Difference]: With dead ends: 92 [2020-10-19 18:14:53,422 INFO L226 Difference]: Without dead ends: 92 [2020-10-19 18:14:53,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:14:53,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-19 18:14:53,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 70. [2020-10-19 18:14:53,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-19 18:14:53,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2020-10-19 18:14:53,427 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 23 [2020-10-19 18:14:53,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:14:53,428 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2020-10-19 18:14:53,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:14:53,428 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2020-10-19 18:14:53,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-19 18:14:53,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:14:53,430 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] [2020-10-19 18:14:53,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-19 18:14:53,430 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:14:53,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:14:53,431 INFO L82 PathProgramCache]: Analyzing trace with hash 858770483, now seen corresponding path program 1 times [2020-10-19 18:14:53,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:14:53,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523333156] [2020-10-19 18:14:53,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:14:53,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:14:53,444 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:14:53,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:14:53,455 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:14:53,484 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:14:53,485 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 18:14:53,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-19 18:14:53,502 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2020-10-19 18:14:53,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:14:53 BoogieIcfgContainer [2020-10-19 18:14:53,519 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:14:53,519 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:14:53,519 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:14:53,520 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:14:53,521 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:14:49" (3/4) ... [2020-10-19 18:14:53,526 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 18:14:53,526 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:14:53,529 INFO L168 Benchmark]: Toolchain (without parser) took 5560.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 183.5 MB). Free memory was 954.6 MB in the beginning and 936.5 MB in the end (delta: 18.1 MB). Peak memory consumption was 201.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:14:53,530 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:14:53,531 INFO L168 Benchmark]: CACSL2BoogieTranslator took 621.38 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 95.9 MB). Free memory was 949.2 MB in the beginning and 1.1 GB in the end (delta: -113.5 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2020-10-19 18:14:53,531 INFO L168 Benchmark]: Boogie Preprocessor took 70.79 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:14:53,532 INFO L168 Benchmark]: RCFGBuilder took 689.30 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 59.1 MB). Peak memory consumption was 59.1 MB. Max. memory is 11.5 GB. [2020-10-19 18:14:53,533 INFO L168 Benchmark]: TraceAbstraction took 4159.45 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 87.6 MB). Free memory was 1.0 GB in the beginning and 936.5 MB in the end (delta: 67.1 MB). Peak memory consumption was 154.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:14:53,534 INFO L168 Benchmark]: Witness Printer took 6.73 ms. Allocated memory is still 1.2 GB. Free memory is still 936.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:14:53,537 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 621.38 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 95.9 MB). Free memory was 949.2 MB in the beginning and 1.1 GB in the end (delta: -113.5 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 70.79 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 689.30 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 59.1 MB). Peak memory consumption was 59.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4159.45 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 87.6 MB). Free memory was 1.0 GB in the beginning and 936.5 MB in the end (delta: 67.1 MB). Peak memory consumption was 154.7 MB. Max. memory is 11.5 GB. * Witness Printer took 6.73 ms. Allocated memory is still 1.2 GB. Free memory is still 936.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}] [L533] COND FALSE !(a == 0) VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}] [L534] List t; [L535] List p = a; VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L536] COND FALSE !(__VERIFIER_nondet_int()) [L543] COND FALSE !(__VERIFIER_nondet_int()) [L550] p->h = 3 VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L551] p = a VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L552] EXPR p->h VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3] [L552] COND FALSE !(p->h == 1) [L554] EXPR p->h VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3] [L554] COND FALSE !(p->h == 2) [L556] EXPR p->h VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3] [L556] COND FALSE !(p->h != 3) [L558] return 0; VAL [\result=0, a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 94 locations, 26 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.0s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 409 SDtfs, 677 SDslu, 911 SDs, 0 SdLazy, 1850 SolverSat, 135 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 90 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=89occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 178 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 187 NumberOfCodeBlocks, 187 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 156 ConstructedInterpolants, 0 QuantifiedInterpolants, 14484 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 12/12 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... ### Bit-precise run ### This is Ultimate 0.1.25-906a4fb [2020-10-19 18:14:55,689 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:14:55,692 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:14:55,732 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:14:55,733 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:14:55,743 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:14:55,745 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:14:55,748 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:14:55,751 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:14:55,754 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:14:55,755 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:14:55,757 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:14:55,757 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:14:55,761 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:14:55,762 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:14:55,765 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:14:55,766 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:14:55,767 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:14:55,770 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:14:55,776 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:14:55,778 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:14:55,779 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:14:55,781 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:14:55,782 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:14:55,794 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:14:55,798 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:14:55,801 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:14:55,802 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:14:55,803 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:14:55,804 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:14:55,806 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:14:55,807 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:14:55,808 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:14:55,810 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:14:55,811 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:14:55,812 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:14:55,813 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:14:55,813 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:14:55,813 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:14:55,814 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:14:55,815 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:14:55,816 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2020-10-19 18:14:55,856 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:14:55,856 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:14:55,859 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:14:55,859 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:14:55,859 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:14:55,860 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:14:55,860 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:14:55,860 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:14:55,860 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:14:55,861 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:14:55,862 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:14:55,862 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 18:14:55,862 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 18:14:55,863 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-19 18:14:55,863 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:14:55,863 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 18:14:55,864 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-19 18:14:55,864 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-19 18:14:55,864 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:14:55,864 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:14:55,865 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:14:55,865 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:14:55,865 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:14:55,866 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:14:55,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:14:55,866 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:14:55,867 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:14:55,867 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-19 18:14:55,867 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-19 18:14:55,867 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:14:55,868 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-19 18:14:55,868 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 -> 6ba4928d27614bbdf140b58cd6ad1ef338e79461 [2020-10-19 18:14:56,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:14:56,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:14:56,219 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:14:56,221 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:14:56,221 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:14:56,222 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/list-1.i [2020-10-19 18:14:56,284 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bda254b22/cc7001d0d6ba4b5cb3b847b1c80cc2ef/FLAGc81b592af [2020-10-19 18:14:56,769 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:14:56,770 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/list-1.i [2020-10-19 18:14:56,784 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bda254b22/cc7001d0d6ba4b5cb3b847b1c80cc2ef/FLAGc81b592af [2020-10-19 18:14:57,126 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bda254b22/cc7001d0d6ba4b5cb3b847b1c80cc2ef [2020-10-19 18:14:57,129 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:14:57,136 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 18:14:57,138 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:14:57,138 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:14:57,141 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:14:57,142 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:14:57" (1/1) ... [2020-10-19 18:14:57,146 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@540d646a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:14:57, skipping insertion in model container [2020-10-19 18:14:57,147 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:14:57" (1/1) ... [2020-10-19 18:14:57,156 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:14:57,212 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:14:57,671 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:14:57,695 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:14:57,775 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:14:57,850 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:14:57,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:14:57 WrapperNode [2020-10-19 18:14:57,851 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:14:57,852 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:14:57,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:14:57,853 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:14:57,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:14:57" (1/1) ... [2020-10-19 18:14:57,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:14:57" (1/1) ... [2020-10-19 18:14:57,890 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:14:57" (1/1) ... [2020-10-19 18:14:57,891 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:14:57" (1/1) ... [2020-10-19 18:14:57,912 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:14:57" (1/1) ... [2020-10-19 18:14:57,923 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:14:57" (1/1) ... [2020-10-19 18:14:57,933 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:14:57" (1/1) ... [2020-10-19 18:14:57,949 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:14:57,950 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:14:57,950 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:14:57,951 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:14:57,951 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:14:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:14:58,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 18:14:58,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:14:58,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2020-10-19 18:14:58,045 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-19 18:14:58,045 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-19 18:14:58,045 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-19 18:14:58,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-19 18:14:58,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-19 18:14:58,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-19 18:14:58,047 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-19 18:14:58,047 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 18:14:58,047 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-19 18:14:58,047 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-19 18:14:58,048 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-19 18:14:58,048 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-19 18:14:58,048 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-19 18:14:58,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 18:14:58,048 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-19 18:14:58,049 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-19 18:14:58,049 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-19 18:14:58,050 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-19 18:14:58,050 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-19 18:14:58,051 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-19 18:14:58,053 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-19 18:14:58,053 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-19 18:14:58,053 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-19 18:14:58,053 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-19 18:14:58,053 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-19 18:14:58,054 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-19 18:14:58,054 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-19 18:14:58,054 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-19 18:14:58,054 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-19 18:14:58,055 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-19 18:14:58,055 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-19 18:14:58,055 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-19 18:14:58,055 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-19 18:14:58,055 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-19 18:14:58,056 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-19 18:14:58,056 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-19 18:14:58,056 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-19 18:14:58,056 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-19 18:14:58,057 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-19 18:14:58,058 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-19 18:14:58,058 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-19 18:14:58,058 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-19 18:14:58,058 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-19 18:14:58,058 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-19 18:14:58,059 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-19 18:14:58,059 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-19 18:14:58,059 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-19 18:14:58,059 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-19 18:14:58,060 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-19 18:14:58,060 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-19 18:14:58,060 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-19 18:14:58,060 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-19 18:14:58,060 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-19 18:14:58,060 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-19 18:14:58,060 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-19 18:14:58,061 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-19 18:14:58,061 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-19 18:14:58,061 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-19 18:14:58,061 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-19 18:14:58,061 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-19 18:14:58,062 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-19 18:14:58,062 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-19 18:14:58,062 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-19 18:14:58,062 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-19 18:14:58,062 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-19 18:14:58,062 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-19 18:14:58,063 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-19 18:14:58,063 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-19 18:14:58,064 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-19 18:14:58,065 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-19 18:14:58,065 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-19 18:14:58,065 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-19 18:14:58,065 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-19 18:14:58,065 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-19 18:14:58,065 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-19 18:14:58,065 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-19 18:14:58,065 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-19 18:14:58,066 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-19 18:14:58,066 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-19 18:14:58,066 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-19 18:14:58,066 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-19 18:14:58,066 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-19 18:14:58,066 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-19 18:14:58,066 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-19 18:14:58,067 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-19 18:14:58,067 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-19 18:14:58,067 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-19 18:14:58,067 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-19 18:14:58,067 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-19 18:14:58,068 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-19 18:14:58,068 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-19 18:14:58,068 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-19 18:14:58,068 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-19 18:14:58,068 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-19 18:14:58,068 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-19 18:14:58,068 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-19 18:14:58,068 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-19 18:14:58,068 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-19 18:14:58,069 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-19 18:14:58,069 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-19 18:14:58,069 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-19 18:14:58,069 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-19 18:14:58,069 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-19 18:14:58,069 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-19 18:14:58,069 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-19 18:14:58,069 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-19 18:14:58,069 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-19 18:14:58,070 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-19 18:14:58,070 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-19 18:14:58,070 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-19 18:14:58,070 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-19 18:14:58,070 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-19 18:14:58,071 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-19 18:14:58,071 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-19 18:14:58,071 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-19 18:14:58,071 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-19 18:14:58,072 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-19 18:14:58,072 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-19 18:14:58,073 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-19 18:14:58,073 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-19 18:14:58,073 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-19 18:14:58,073 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-19 18:14:58,073 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 18:14:58,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 18:14:58,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-19 18:14:58,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-19 18:14:58,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-19 18:14:58,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-19 18:14:58,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 18:14:58,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-19 18:14:58,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:14:58,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2020-10-19 18:14:58,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-10-19 18:14:58,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-10-19 18:14:58,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 18:14:58,511 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-19 18:14:58,842 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:14:58,842 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-19 18:14:58,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:14:58 BoogieIcfgContainer [2020-10-19 18:14:58,845 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:14:58,846 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:14:58,847 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:14:58,850 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:14:58,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:14:57" (1/3) ... [2020-10-19 18:14:58,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6427a7f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:14:58, skipping insertion in model container [2020-10-19 18:14:58,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:14:57" (2/3) ... [2020-10-19 18:14:58,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6427a7f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:14:58, skipping insertion in model container [2020-10-19 18:14:58,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:14:58" (3/3) ... [2020-10-19 18:14:58,855 INFO L111 eAbstractionObserver]: Analyzing ICFG list-1.i [2020-10-19 18:14:58,867 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:14:58,875 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 26 error locations. [2020-10-19 18:14:58,890 INFO L253 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2020-10-19 18:14:58,912 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:14:58,912 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 18:14:58,913 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:14:58,913 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:14:58,913 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:14:58,913 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:14:58,913 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:14:58,914 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:14:58,929 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-10-19 18:14:58,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-19 18:14:58,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:14:58,938 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:14:58,939 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:14:58,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:14:58,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1059061945, now seen corresponding path program 1 times [2020-10-19 18:14:58,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:14:58,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2033367246] [2020-10-19 18:14:58,956 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 [2020-10-19 18:14:59,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:14:59,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 18:14:59,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:14:59,213 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 [2020-10-19 18:14:59,214 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:14:59,227 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:14:59,227 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:14:59,228 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-19 18:14:59,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:14:59,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:14:59,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:14:59,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2033367246] [2020-10-19 18:14:59,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:14:59,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-10-19 18:14:59,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466963582] [2020-10-19 18:14:59,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:14:59,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:14:59,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:14:59,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:14:59,398 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 6 states. [2020-10-19 18:15:00,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:15:00,144 INFO L93 Difference]: Finished difference Result 119 states and 132 transitions. [2020-10-19 18:15:00,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:15:00,147 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-19 18:15:00,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:15:00,157 INFO L225 Difference]: With dead ends: 119 [2020-10-19 18:15:00,157 INFO L226 Difference]: Without dead ends: 108 [2020-10-19 18:15:00,159 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:15:00,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-19 18:15:00,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 84. [2020-10-19 18:15:00,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-19 18:15:00,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 103 transitions. [2020-10-19 18:15:00,223 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 103 transitions. Word has length 10 [2020-10-19 18:15:00,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:15:00,223 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 103 transitions. [2020-10-19 18:15:00,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:15:00,224 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 103 transitions. [2020-10-19 18:15:00,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-19 18:15:00,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:15:00,225 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:15:00,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-19 18:15:00,437 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:15:00,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:15:00,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1059061944, now seen corresponding path program 1 times [2020-10-19 18:15:00,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:15:00,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2142334447] [2020-10-19 18:15:00,440 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 [2020-10-19 18:15:00,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:15:00,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:15:00,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:15:00,566 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 [2020-10-19 18:15:00,567 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:15:00,570 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:15:00,570 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:15:00,571 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 18:15:00,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:15:00,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:15:00,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:15:00,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2142334447] [2020-10-19 18:15:00,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:15:00,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-19 18:15:00,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671346496] [2020-10-19 18:15:00,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:15:00,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:15:00,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:15:00,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:15:00,619 INFO L87 Difference]: Start difference. First operand 84 states and 103 transitions. Second operand 4 states. [2020-10-19 18:15:00,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:15:00,875 INFO L93 Difference]: Finished difference Result 77 states and 84 transitions. [2020-10-19 18:15:00,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:15:00,876 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-19 18:15:00,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:15:00,877 INFO L225 Difference]: With dead ends: 77 [2020-10-19 18:15:00,878 INFO L226 Difference]: Without dead ends: 77 [2020-10-19 18:15:00,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:15:00,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-19 18:15:00,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-10-19 18:15:00,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-19 18:15:00,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 84 transitions. [2020-10-19 18:15:00,896 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 84 transitions. Word has length 10 [2020-10-19 18:15:00,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:15:00,897 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 84 transitions. [2020-10-19 18:15:00,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:15:00,897 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 84 transitions. [2020-10-19 18:15:00,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-19 18:15:00,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:15:00,899 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:15:01,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-19 18:15:01,121 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:15:01,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:15:01,122 INFO L82 PathProgramCache]: Analyzing trace with hash 318419033, now seen corresponding path program 1 times [2020-10-19 18:15:01,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:15:01,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1926626724] [2020-10-19 18:15:01,124 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 [2020-10-19 18:15:01,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:15:01,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 18:15:01,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:15:01,264 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2020-10-19 18:15:01,265 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:15:01,269 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:15:01,270 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:15:01,270 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-10-19 18:15:01,317 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 17 treesize of output 9 [2020-10-19 18:15:01,318 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:15:01,320 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:15:01,321 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:15:01,321 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:5 [2020-10-19 18:15:01,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:15:01,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:15:01,381 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 16 treesize of output 12 [2020-10-19 18:15:01,383 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-10-19 18:15:01,389 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:15:01,390 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-10-19 18:15:01,390 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:7 [2020-10-19 18:15:01,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:15:01,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1926626724] [2020-10-19 18:15:01,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:15:01,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2020-10-19 18:15:01,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309685920] [2020-10-19 18:15:01,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 18:15:01,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:15:01,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 18:15:01,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:15:01,399 INFO L87 Difference]: Start difference. First operand 77 states and 84 transitions. Second operand 9 states. [2020-10-19 18:15:02,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:15:02,138 INFO L93 Difference]: Finished difference Result 150 states and 162 transitions. [2020-10-19 18:15:02,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-19 18:15:02,140 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2020-10-19 18:15:02,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:15:02,142 INFO L225 Difference]: With dead ends: 150 [2020-10-19 18:15:02,142 INFO L226 Difference]: Without dead ends: 150 [2020-10-19 18:15:02,148 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-19 18:15:02,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-19 18:15:02,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 83. [2020-10-19 18:15:02,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-19 18:15:02,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 93 transitions. [2020-10-19 18:15:02,170 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 93 transitions. Word has length 17 [2020-10-19 18:15:02,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:15:02,170 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 93 transitions. [2020-10-19 18:15:02,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 18:15:02,172 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 93 transitions. [2020-10-19 18:15:02,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-19 18:15:02,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:15:02,174 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:15:02,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-19 18:15:02,389 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:15:02,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:15:02,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1432575182, now seen corresponding path program 1 times [2020-10-19 18:15:02,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:15:02,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [877302363] [2020-10-19 18:15:02,392 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 [2020-10-19 18:15:02,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:15:02,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-19 18:15:02,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:15:02,562 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 [2020-10-19 18:15:02,562 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:15:02,570 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:15:02,570 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:15:02,570 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-19 18:15:02,593 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2020-10-19 18:15:02,593 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:15:02,614 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:15:02,620 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2020-10-19 18:15:02,621 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:15:02,635 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:15:02,636 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:15:02,636 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:23 [2020-10-19 18:15:02,686 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 19 treesize of output 7 [2020-10-19 18:15:02,687 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:15:02,698 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:15:02,701 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 21 treesize of output 9 [2020-10-19 18:15:02,702 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:15:02,709 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:15:02,710 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:15:02,710 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:39, output treesize:9 [2020-10-19 18:15:02,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:15:02,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:15:02,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:15:02,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [877302363] [2020-10-19 18:15:02,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:15:02,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-10-19 18:15:02,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639294614] [2020-10-19 18:15:02,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-19 18:15:02,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:15:02,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-19 18:15:02,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:15:02,977 INFO L87 Difference]: Start difference. First operand 83 states and 93 transitions. Second operand 10 states. [2020-10-19 18:15:04,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:15:04,434 INFO L93 Difference]: Finished difference Result 111 states and 124 transitions. [2020-10-19 18:15:04,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 18:15:04,436 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-10-19 18:15:04,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:15:04,437 INFO L225 Difference]: With dead ends: 111 [2020-10-19 18:15:04,437 INFO L226 Difference]: Without dead ends: 111 [2020-10-19 18:15:04,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-10-19 18:15:04,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-19 18:15:04,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 83. [2020-10-19 18:15:04,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-19 18:15:04,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 96 transitions. [2020-10-19 18:15:04,448 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 96 transitions. Word has length 17 [2020-10-19 18:15:04,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:15:04,449 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 96 transitions. [2020-10-19 18:15:04,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-19 18:15:04,449 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 96 transitions. [2020-10-19 18:15:04,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-19 18:15:04,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:15:04,450 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:15:04,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-19 18:15:04,659 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:15:04,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:15:04,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1432575183, now seen corresponding path program 1 times [2020-10-19 18:15:04,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:15:04,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [7277179] [2020-10-19 18:15:04,661 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 [2020-10-19 18:15:04,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:15:04,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-19 18:15:04,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:15:04,798 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 [2020-10-19 18:15:04,799 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:15:04,802 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:15:04,802 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:15:04,803 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 18:15:04,837 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2020-10-19 18:15:04,837 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:15:04,852 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:15:04,853 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:15:04,854 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:13 [2020-10-19 18:15:04,873 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 23 treesize of output 11 [2020-10-19 18:15:04,874 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:15:04,877 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:15:04,877 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:15:04,877 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:7 [2020-10-19 18:15:04,898 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:15:04,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:15:04,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:15:04,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [7277179] [2020-10-19 18:15:04,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:15:04,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-10-19 18:15:04,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925568796] [2020-10-19 18:15:04,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:15:04,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:15:04,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:15:04,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:15:04,920 INFO L87 Difference]: Start difference. First operand 83 states and 96 transitions. Second operand 6 states. [2020-10-19 18:15:05,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:15:05,390 INFO L93 Difference]: Finished difference Result 102 states and 115 transitions. [2020-10-19 18:15:05,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:15:05,391 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-19 18:15:05,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:15:05,393 INFO L225 Difference]: With dead ends: 102 [2020-10-19 18:15:05,393 INFO L226 Difference]: Without dead ends: 102 [2020-10-19 18:15:05,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:15:05,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-19 18:15:05,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 81. [2020-10-19 18:15:05,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-19 18:15:05,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 92 transitions. [2020-10-19 18:15:05,401 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 92 transitions. Word has length 17 [2020-10-19 18:15:05,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:15:05,401 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 92 transitions. [2020-10-19 18:15:05,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:15:05,402 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 92 transitions. [2020-10-19 18:15:05,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-19 18:15:05,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:15:05,403 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:15:05,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-19 18:15:05,616 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:15:05,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:15:05,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1962715062, now seen corresponding path program 1 times [2020-10-19 18:15:05,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:15:05,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [952167515] [2020-10-19 18:15:05,618 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 [2020-10-19 18:15:05,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:15:05,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-19 18:15:05,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:15:05,723 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 [2020-10-19 18:15:05,724 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:15:05,725 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:15:05,726 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:15:05,726 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 18:15:05,738 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2020-10-19 18:15:05,738 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:15:05,745 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:15:05,746 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:15:05,747 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:13 [2020-10-19 18:15:05,763 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 23 treesize of output 11 [2020-10-19 18:15:05,763 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:15:05,766 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:15:05,766 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:15:05,766 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:7 [2020-10-19 18:15:05,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:15:05,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:15:05,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:15:05,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [952167515] [2020-10-19 18:15:05,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:15:05,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-10-19 18:15:05,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107805007] [2020-10-19 18:15:05,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:15:05,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:15:05,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:15:05,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:15:05,805 INFO L87 Difference]: Start difference. First operand 81 states and 92 transitions. Second operand 6 states. [2020-10-19 18:15:06,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:15:06,156 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2020-10-19 18:15:06,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:15:06,157 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-10-19 18:15:06,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:15:06,158 INFO L225 Difference]: With dead ends: 100 [2020-10-19 18:15:06,158 INFO L226 Difference]: Without dead ends: 100 [2020-10-19 18:15:06,159 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:15:06,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-19 18:15:06,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 79. [2020-10-19 18:15:06,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-19 18:15:06,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 89 transitions. [2020-10-19 18:15:06,165 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 89 transitions. Word has length 18 [2020-10-19 18:15:06,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:15:06,166 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 89 transitions. [2020-10-19 18:15:06,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:15:06,166 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 89 transitions. [2020-10-19 18:15:06,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-19 18:15:06,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:15:06,167 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:15:06,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-19 18:15:06,370 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:15:06,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:15:06,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1962715063, now seen corresponding path program 1 times [2020-10-19 18:15:06,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:15:06,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1824162500] [2020-10-19 18:15:06,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-10-19 18:15:06,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:15:06,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-19 18:15:06,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:15:06,487 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 [2020-10-19 18:15:06,487 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:15:06,491 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:15:06,492 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:15:06,492 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-19 18:15:06,519 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2020-10-19 18:15:06,520 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:15:06,530 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:15:06,536 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2020-10-19 18:15:06,537 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:15:06,548 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:15:06,549 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:15:06,549 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:23 [2020-10-19 18:15:06,590 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 19 treesize of output 7 [2020-10-19 18:15:06,590 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:15:06,601 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:15:06,605 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 21 treesize of output 9 [2020-10-19 18:15:06,605 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:15:06,611 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:15:06,611 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:15:06,611 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:39, output treesize:9 [2020-10-19 18:15:06,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:15:06,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:15:06,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:15:06,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1824162500] [2020-10-19 18:15:06,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:15:06,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-10-19 18:15:06,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959821235] [2020-10-19 18:15:06,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-19 18:15:06,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:15:06,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-19 18:15:06,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:15:06,859 INFO L87 Difference]: Start difference. First operand 79 states and 89 transitions. Second operand 10 states. [2020-10-19 18:15:08,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:15:08,210 INFO L93 Difference]: Finished difference Result 98 states and 109 transitions. [2020-10-19 18:15:08,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 18:15:08,212 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2020-10-19 18:15:08,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:15:08,213 INFO L225 Difference]: With dead ends: 98 [2020-10-19 18:15:08,213 INFO L226 Difference]: Without dead ends: 98 [2020-10-19 18:15:08,214 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-10-19 18:15:08,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-19 18:15:08,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 67. [2020-10-19 18:15:08,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-19 18:15:08,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2020-10-19 18:15:08,221 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 18 [2020-10-19 18:15:08,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:15:08,221 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2020-10-19 18:15:08,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-19 18:15:08,222 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2020-10-19 18:15:08,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-19 18:15:08,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:15:08,223 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:15:08,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-10-19 18:15:08,431 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:15:08,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:15:08,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1010435462, now seen corresponding path program 1 times [2020-10-19 18:15:08,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:15:08,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1130390243] [2020-10-19 18:15:08,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-10-19 18:15:08,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:15:08,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 18:15:08,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:15:08,571 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2020-10-19 18:15:08,571 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:15:08,575 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:15:08,575 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:15:08,575 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-10-19 18:15:08,602 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 17 treesize of output 9 [2020-10-19 18:15:08,602 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:15:08,609 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:15:08,609 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:15:08,609 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:5 [2020-10-19 18:15:08,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:15:08,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:15:08,684 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 18 treesize of output 14 [2020-10-19 18:15:08,688 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-10-19 18:15:08,692 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:15:08,693 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-10-19 18:15:08,693 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:7 [2020-10-19 18:15:08,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:15:08,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1130390243] [2020-10-19 18:15:08,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:15:08,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2020-10-19 18:15:08,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629361716] [2020-10-19 18:15:08,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 18:15:08,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:15:08,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 18:15:08,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:15:08,703 INFO L87 Difference]: Start difference. First operand 67 states and 75 transitions. Second operand 9 states. [2020-10-19 18:15:09,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:15:09,303 INFO L93 Difference]: Finished difference Result 135 states and 148 transitions. [2020-10-19 18:15:09,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-19 18:15:09,308 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-10-19 18:15:09,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:15:09,309 INFO L225 Difference]: With dead ends: 135 [2020-10-19 18:15:09,309 INFO L226 Difference]: Without dead ends: 135 [2020-10-19 18:15:09,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-19 18:15:09,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-19 18:15:09,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 85. [2020-10-19 18:15:09,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-19 18:15:09,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 96 transitions. [2020-10-19 18:15:09,325 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 96 transitions. Word has length 19 [2020-10-19 18:15:09,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:15:09,326 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 96 transitions. [2020-10-19 18:15:09,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 18:15:09,329 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 96 transitions. [2020-10-19 18:15:09,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-19 18:15:09,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:15:09,331 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] [2020-10-19 18:15:09,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-10-19 18:15:09,544 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:15:09,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:15:09,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1257104172, now seen corresponding path program 1 times [2020-10-19 18:15:09,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:15:09,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1565205940] [2020-10-19 18:15:09,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-10-19 18:15:09,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:15:09,658 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:15:09,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:15:09,697 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:15:09,727 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-19 18:15:09,727 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 18:15:09,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-10-19 18:15:09,943 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2020-10-19 18:15:09,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:15:09 BoogieIcfgContainer [2020-10-19 18:15:09,962 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:15:09,962 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:15:09,962 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:15:09,963 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:15:09,963 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:14:58" (3/4) ... [2020-10-19 18:15:09,967 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 18:15:09,967 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:15:09,969 INFO L168 Benchmark]: Toolchain (without parser) took 12837.99 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 307.8 MB). Free memory was 958.6 MB in the beginning and 1.2 GB in the end (delta: -259.9 MB). Peak memory consumption was 47.9 MB. Max. memory is 11.5 GB. [2020-10-19 18:15:09,969 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:15:09,970 INFO L168 Benchmark]: CACSL2BoogieTranslator took 714.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.6 MB). Free memory was 953.2 MB in the beginning and 1.1 GB in the end (delta: -135.0 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:15:09,970 INFO L168 Benchmark]: Boogie Preprocessor took 97.78 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:15:09,971 INFO L168 Benchmark]: RCFGBuilder took 894.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 60.1 MB). Peak memory consumption was 60.1 MB. Max. memory is 11.5 GB. [2020-10-19 18:15:09,972 INFO L168 Benchmark]: TraceAbstraction took 11115.53 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 186.1 MB). Free memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: -190.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:15:09,972 INFO L168 Benchmark]: Witness Printer took 5.20 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:15:09,975 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 714.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.6 MB). Free memory was 953.2 MB in the beginning and 1.1 GB in the end (delta: -135.0 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 97.78 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 894.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 60.1 MB). Peak memory consumption was 60.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 11115.53 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 186.1 MB). Free memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: -190.3 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 5.20 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 531]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 531. Possible FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); VAL [a={1:0}, malloc(sizeof(struct node))={1:0}] [L533] COND FALSE !(a == 0) VAL [a={1:0}, malloc(sizeof(struct node))={1:0}] [L534] List t; [L535] List p = a; VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}] [L536] COND FALSE !(__VERIFIER_nondet_int()) [L543] COND FALSE !(__VERIFIER_nondet_int()) [L550] p->h = 3 VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}] [L551] p = a VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}] [L552] EXPR p->h VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}, p->h=3] [L552] COND FALSE !(p->h == 1) [L554] EXPR p->h VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}, p->h=3] [L554] COND FALSE !(p->h == 2) [L556] EXPR p->h VAL [a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}, p->h=3] [L556] COND FALSE !(p->h != 3) [L558] return 0; VAL [\result=0, a={1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 98 locations, 26 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.0s, OverallIterations: 9, TraceHistogramMax: 2, AutomataDifference: 6.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 362 SDtfs, 858 SDslu, 1153 SDs, 0 SdLazy, 1460 SolverSat, 160 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 282 GetRequests, 203 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=85occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 242 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 146 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 236 ConstructedInterpolants, 0 QuantifiedInterpolants, 15614 SizeOfPredicates, 62 NumberOfNonLiveVariables, 688 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 16/16 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...