./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/test-0232-1.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/memsafety/test-0232-1.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 aeec7a18a8140b87b664dd42e07dd87d1c028ac9 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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/memsafety/test-0232-1.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 aeec7a18a8140b87b664dd42e07dd87d1c028ac9 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 18:01:33,353 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:01:33,356 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:01:33,381 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:01:33,382 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:01:33,389 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:01:33,391 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:01:33,396 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:01:33,398 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:01:33,401 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:01:33,404 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:01:33,407 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:01:33,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:01:33,411 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:01:33,413 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:01:33,416 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:01:33,418 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:01:33,422 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:01:33,425 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:01:33,430 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:01:33,433 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:01:33,434 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:01:33,437 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:01:33,438 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:01:33,444 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:01:33,446 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:01:33,447 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:01:33,448 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:01:33,450 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:01:33,452 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:01:33,452 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:01:33,453 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:01:33,454 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:01:33,456 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:01:33,457 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:01:33,458 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:01:33,458 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:01:33,459 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:01:33,459 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:01:33,471 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:01:33,472 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:01:33,473 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-19 18:01:33,523 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:01:33,523 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:01:33,525 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:01:33,526 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:01:33,526 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:01:33,526 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:01:33,527 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:01:33,527 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:01:33,527 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:01:33,527 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:01:33,528 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:01:33,529 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 18:01:33,529 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 18:01:33,530 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-19 18:01:33,530 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:01:33,530 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 18:01:33,530 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:01:33,531 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:01:33,532 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:01:33,532 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:01:33,532 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:01:33,533 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:01:33,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:01:33,533 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:01:33,534 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:01:33,534 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:01:33,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 18:01:33,534 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:01:33,535 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 -> aeec7a18a8140b87b664dd42e07dd87d1c028ac9 [2020-10-19 18:01:33,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:01:33,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:01:33,904 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:01:33,906 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:01:33,906 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:01:33,907 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0232-1.i [2020-10-19 18:01:33,973 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4506790af/fd1349bb1f394d9a8555faf63d162f22/FLAG79cfe3f4a [2020-10-19 18:01:34,440 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:01:34,441 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0232-1.i [2020-10-19 18:01:34,458 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4506790af/fd1349bb1f394d9a8555faf63d162f22/FLAG79cfe3f4a [2020-10-19 18:01:34,734 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4506790af/fd1349bb1f394d9a8555faf63d162f22 [2020-10-19 18:01:34,738 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:01:34,748 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 18:01:34,751 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:01:34,751 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:01:34,755 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:01:34,756 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:01:34" (1/1) ... [2020-10-19 18:01:34,760 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@616a5b0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:01:34, skipping insertion in model container [2020-10-19 18:01:34,761 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:01:34" (1/1) ... [2020-10-19 18:01:34,770 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:01:34,832 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:01:35,252 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:01:35,267 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:01:35,352 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:01:35,440 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:01:35,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:01:35 WrapperNode [2020-10-19 18:01:35,442 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:01:35,442 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:01:35,443 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:01:35,443 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:01:35,457 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:01:35" (1/1) ... [2020-10-19 18:01:35,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:01:35" (1/1) ... [2020-10-19 18:01:35,494 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:01:35" (1/1) ... [2020-10-19 18:01:35,496 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:01:35" (1/1) ... [2020-10-19 18:01:35,528 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:01:35" (1/1) ... [2020-10-19 18:01:35,540 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:01:35" (1/1) ... [2020-10-19 18:01:35,545 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:01:35" (1/1) ... [2020-10-19 18:01:35,560 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:01:35,561 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:01:35,561 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:01:35,561 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:01:35,565 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:01:35" (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 18:01:35,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 18:01:35,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:01:35,638 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-19 18:01:35,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-19 18:01:35,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-19 18:01:35,640 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-19 18:01:35,641 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-19 18:01:35,641 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-19 18:01:35,641 INFO L138 BoogieDeclarations]: Found implementation of procedure append [2020-10-19 18:01:35,641 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 18:01:35,642 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-19 18:01:35,642 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-19 18:01:35,642 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-19 18:01:35,642 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-19 18:01:35,643 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-19 18:01:35,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 18:01:35,645 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-19 18:01:35,645 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-19 18:01:35,646 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-19 18:01:35,646 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-19 18:01:35,646 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-19 18:01:35,647 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-19 18:01:35,647 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-19 18:01:35,647 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-19 18:01:35,648 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-19 18:01:35,649 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-19 18:01:35,650 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-19 18:01:35,650 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-19 18:01:35,650 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-19 18:01:35,650 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-19 18:01:35,651 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-19 18:01:35,651 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-19 18:01:35,651 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-19 18:01:35,651 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-19 18:01:35,652 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-19 18:01:35,652 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-19 18:01:35,652 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-19 18:01:35,652 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-19 18:01:35,653 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-19 18:01:35,653 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-19 18:01:35,653 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-19 18:01:35,653 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-19 18:01:35,653 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-19 18:01:35,653 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-19 18:01:35,654 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-19 18:01:35,654 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-19 18:01:35,654 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-19 18:01:35,654 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-19 18:01:35,655 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-19 18:01:35,655 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-19 18:01:35,655 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-19 18:01:35,655 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-19 18:01:35,656 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-19 18:01:35,656 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-19 18:01:35,656 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-19 18:01:35,656 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-19 18:01:35,656 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-19 18:01:35,657 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-19 18:01:35,657 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-19 18:01:35,657 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-19 18:01:35,657 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-19 18:01:35,658 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-19 18:01:35,658 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-19 18:01:35,658 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-19 18:01:35,658 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-19 18:01:35,658 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-19 18:01:35,659 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-19 18:01:35,659 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-19 18:01:35,659 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-19 18:01:35,659 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-19 18:01:35,659 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-19 18:01:35,659 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-19 18:01:35,660 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-19 18:01:35,660 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-19 18:01:35,661 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-19 18:01:35,661 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-19 18:01:35,661 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-19 18:01:35,661 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-19 18:01:35,661 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-19 18:01:35,662 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-19 18:01:35,662 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-19 18:01:35,662 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-19 18:01:35,662 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-19 18:01:35,662 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-19 18:01:35,662 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-19 18:01:35,662 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-19 18:01:35,663 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-19 18:01:35,663 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-19 18:01:35,663 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-19 18:01:35,663 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-19 18:01:35,663 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-19 18:01:35,663 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-19 18:01:35,663 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-19 18:01:35,663 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-19 18:01:35,663 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-19 18:01:35,664 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-19 18:01:35,664 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-19 18:01:35,664 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-19 18:01:35,664 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-19 18:01:35,664 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-19 18:01:35,664 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-19 18:01:35,664 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-19 18:01:35,664 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-19 18:01:35,664 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-19 18:01:35,665 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-19 18:01:35,665 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-19 18:01:35,665 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-19 18:01:35,665 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-19 18:01:35,665 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-19 18:01:35,665 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-19 18:01:35,665 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-19 18:01:35,665 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-19 18:01:35,665 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-19 18:01:35,666 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-19 18:01:35,666 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-19 18:01:35,666 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-19 18:01:35,666 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-19 18:01:35,666 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-19 18:01:35,667 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-19 18:01:35,667 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-19 18:01:35,667 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-19 18:01:35,667 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-19 18:01:35,667 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-19 18:01:35,667 INFO L130 BoogieDeclarations]: Found specification of procedure append [2020-10-19 18:01:35,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 18:01:35,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-19 18:01:35,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-19 18:01:35,669 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 18:01:35,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-19 18:01:35,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 18:01:35,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 18:01:35,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 18:01:35,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:01:35,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 18:01:35,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 18:01:36,331 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:01:36,331 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-19 18:01:36,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:01:36 BoogieIcfgContainer [2020-10-19 18:01:36,335 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:01:36,337 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:01:36,338 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:01:36,342 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:01:36,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:01:34" (1/3) ... [2020-10-19 18:01:36,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dff5c6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:01:36, skipping insertion in model container [2020-10-19 18:01:36,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:01:35" (2/3) ... [2020-10-19 18:01:36,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dff5c6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:01:36, skipping insertion in model container [2020-10-19 18:01:36,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:01:36" (3/3) ... [2020-10-19 18:01:36,355 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0232-1.i [2020-10-19 18:01:36,369 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:01:36,381 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 42 error locations. [2020-10-19 18:01:36,397 INFO L253 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2020-10-19 18:01:36,422 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:01:36,422 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 18:01:36,422 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:01:36,422 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:01:36,423 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:01:36,423 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:01:36,423 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:01:36,423 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:01:36,441 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2020-10-19 18:01:36,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-19 18:01:36,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:01:36,452 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:01:36,452 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr21ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr26ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:01:36,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:01:36,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1751684042, now seen corresponding path program 1 times [2020-10-19 18:01:36,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:01:36,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109154078] [2020-10-19 18:01:36,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:01:36,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:36,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:01:36,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:36,676 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 18:01:36,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109154078] [2020-10-19 18:01:36,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:01:36,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:01:36,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635743595] [2020-10-19 18:01:36,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 18:01:36,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:01:36,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:01:36,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:01:36,717 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 3 states. [2020-10-19 18:01:36,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:01:36,939 INFO L93 Difference]: Finished difference Result 89 states and 92 transitions. [2020-10-19 18:01:36,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:01:36,941 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-19 18:01:36,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:01:36,953 INFO L225 Difference]: With dead ends: 89 [2020-10-19 18:01:36,954 INFO L226 Difference]: Without dead ends: 86 [2020-10-19 18:01:36,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:01:36,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-19 18:01:36,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-10-19 18:01:37,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-19 18:01:37,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 89 transitions. [2020-10-19 18:01:37,004 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 89 transitions. Word has length 8 [2020-10-19 18:01:37,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:01:37,005 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 89 transitions. [2020-10-19 18:01:37,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 18:01:37,005 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 89 transitions. [2020-10-19 18:01:37,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-19 18:01:37,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:01:37,006 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:01:37,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 18:01:37,007 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr21ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr26ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:01:37,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:01:37,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1532266366, now seen corresponding path program 1 times [2020-10-19 18:01:37,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:01:37,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961542207] [2020-10-19 18:01:37,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:01:37,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:37,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:01:37,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:37,149 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 18:01:37,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961542207] [2020-10-19 18:01:37,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:01:37,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 18:01:37,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275523894] [2020-10-19 18:01:37,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:01:37,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:01:37,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:01:37,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:01:37,154 INFO L87 Difference]: Start difference. First operand 86 states and 89 transitions. Second operand 6 states. [2020-10-19 18:01:37,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:01:37,459 INFO L93 Difference]: Finished difference Result 78 states and 81 transitions. [2020-10-19 18:01:37,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:01:37,460 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-10-19 18:01:37,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:01:37,461 INFO L225 Difference]: With dead ends: 78 [2020-10-19 18:01:37,462 INFO L226 Difference]: Without dead ends: 78 [2020-10-19 18:01:37,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:01:37,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-19 18:01:37,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-10-19 18:01:37,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-19 18:01:37,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 81 transitions. [2020-10-19 18:01:37,473 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 81 transitions. Word has length 9 [2020-10-19 18:01:37,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:01:37,474 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 81 transitions. [2020-10-19 18:01:37,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:01:37,474 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 81 transitions. [2020-10-19 18:01:37,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-19 18:01:37,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:01:37,475 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:01:37,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 18:01:37,476 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr21ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr26ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:01:37,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:01:37,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1532266365, now seen corresponding path program 1 times [2020-10-19 18:01:37,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:01:37,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059704625] [2020-10-19 18:01:37,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:01:37,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:37,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:01:37,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:37,618 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 18:01:37,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059704625] [2020-10-19 18:01:37,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:01:37,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 18:01:37,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213516816] [2020-10-19 18:01:37,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:01:37,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:01:37,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:01:37,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:01:37,630 INFO L87 Difference]: Start difference. First operand 78 states and 81 transitions. Second operand 6 states. [2020-10-19 18:01:38,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:01:38,001 INFO L93 Difference]: Finished difference Result 96 states and 100 transitions. [2020-10-19 18:01:38,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:01:38,001 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-10-19 18:01:38,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:01:38,005 INFO L225 Difference]: With dead ends: 96 [2020-10-19 18:01:38,005 INFO L226 Difference]: Without dead ends: 96 [2020-10-19 18:01:38,006 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:01:38,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-19 18:01:38,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 83. [2020-10-19 18:01:38,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-19 18:01:38,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2020-10-19 18:01:38,017 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 9 [2020-10-19 18:01:38,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:01:38,017 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2020-10-19 18:01:38,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:01:38,018 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2020-10-19 18:01:38,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-19 18:01:38,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:01:38,019 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:01:38,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 18:01:38,020 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr21ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr26ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:01:38,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:01:38,020 INFO L82 PathProgramCache]: Analyzing trace with hash -255617013, now seen corresponding path program 1 times [2020-10-19 18:01:38,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:01:38,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800581623] [2020-10-19 18:01:38,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:01:38,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:38,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:01:38,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:38,084 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 18:01:38,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800581623] [2020-10-19 18:01:38,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:01:38,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:01:38,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80498252] [2020-10-19 18:01:38,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:01:38,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:01:38,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:01:38,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:01:38,087 INFO L87 Difference]: Start difference. First operand 83 states and 91 transitions. Second operand 4 states. [2020-10-19 18:01:38,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:01:38,240 INFO L93 Difference]: Finished difference Result 79 states and 86 transitions. [2020-10-19 18:01:38,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:01:38,241 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-19 18:01:38,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:01:38,242 INFO L225 Difference]: With dead ends: 79 [2020-10-19 18:01:38,242 INFO L226 Difference]: Without dead ends: 79 [2020-10-19 18:01:38,243 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:01:38,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-19 18:01:38,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-10-19 18:01:38,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-19 18:01:38,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 86 transitions. [2020-10-19 18:01:38,252 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 86 transitions. Word has length 10 [2020-10-19 18:01:38,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:01:38,252 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 86 transitions. [2020-10-19 18:01:38,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:01:38,253 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 86 transitions. [2020-10-19 18:01:38,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-19 18:01:38,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:01:38,253 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:01:38,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 18:01:38,254 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr21ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr26ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:01:38,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:01:38,254 INFO L82 PathProgramCache]: Analyzing trace with hash -255617012, now seen corresponding path program 1 times [2020-10-19 18:01:38,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:01:38,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588904805] [2020-10-19 18:01:38,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:01:38,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:38,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:01:38,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:38,317 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 18:01:38,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588904805] [2020-10-19 18:01:38,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:01:38,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:01:38,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424879011] [2020-10-19 18:01:38,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:01:38,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:01:38,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:01:38,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:01:38,320 INFO L87 Difference]: Start difference. First operand 79 states and 86 transitions. Second operand 4 states. [2020-10-19 18:01:38,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:01:38,450 INFO L93 Difference]: Finished difference Result 75 states and 81 transitions. [2020-10-19 18:01:38,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:01:38,454 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-19 18:01:38,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:01:38,456 INFO L225 Difference]: With dead ends: 75 [2020-10-19 18:01:38,456 INFO L226 Difference]: Without dead ends: 75 [2020-10-19 18:01:38,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:01:38,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-19 18:01:38,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-10-19 18:01:38,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-19 18:01:38,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 81 transitions. [2020-10-19 18:01:38,467 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 81 transitions. Word has length 10 [2020-10-19 18:01:38,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:01:38,468 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 81 transitions. [2020-10-19 18:01:38,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:01:38,468 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 81 transitions. [2020-10-19 18:01:38,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-19 18:01:38,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:01:38,469 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:01:38,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-19 18:01:38,469 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr21ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr26ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:01:38,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:01:38,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1995559187, now seen corresponding path program 1 times [2020-10-19 18:01:38,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:01:38,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281786850] [2020-10-19 18:01:38,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:01:38,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:38,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:01:38,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:38,615 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 18:01:38,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281786850] [2020-10-19 18:01:38,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:01:38,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-19 18:01:38,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627343623] [2020-10-19 18:01:38,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 18:01:38,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:01:38,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 18:01:38,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:01:38,619 INFO L87 Difference]: Start difference. First operand 75 states and 81 transitions. Second operand 9 states. [2020-10-19 18:01:39,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:01:39,013 INFO L93 Difference]: Finished difference Result 86 states and 93 transitions. [2020-10-19 18:01:39,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-19 18:01:39,015 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-10-19 18:01:39,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:01:39,016 INFO L225 Difference]: With dead ends: 86 [2020-10-19 18:01:39,016 INFO L226 Difference]: Without dead ends: 86 [2020-10-19 18:01:39,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-10-19 18:01:39,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-19 18:01:39,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 82. [2020-10-19 18:01:39,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-19 18:01:39,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 89 transitions. [2020-10-19 18:01:39,039 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 89 transitions. Word has length 15 [2020-10-19 18:01:39,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:01:39,040 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 89 transitions. [2020-10-19 18:01:39,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 18:01:39,041 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 89 transitions. [2020-10-19 18:01:39,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-19 18:01:39,043 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:01:39,043 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:01:39,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-19 18:01:39,045 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr21ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr26ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:01:39,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:01:39,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1732514512, now seen corresponding path program 1 times [2020-10-19 18:01:39,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:01:39,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272008042] [2020-10-19 18:01:39,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:01:39,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:39,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:01:39,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:39,206 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 18:01:39,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272008042] [2020-10-19 18:01:39,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:01:39,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-19 18:01:39,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326666070] [2020-10-19 18:01:39,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 18:01:39,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:01:39,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 18:01:39,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:01:39,208 INFO L87 Difference]: Start difference. First operand 82 states and 89 transitions. Second operand 8 states. [2020-10-19 18:01:39,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:01:39,416 INFO L93 Difference]: Finished difference Result 81 states and 88 transitions. [2020-10-19 18:01:39,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:01:39,417 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2020-10-19 18:01:39,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:01:39,419 INFO L225 Difference]: With dead ends: 81 [2020-10-19 18:01:39,419 INFO L226 Difference]: Without dead ends: 81 [2020-10-19 18:01:39,420 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-19 18:01:39,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-19 18:01:39,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 78. [2020-10-19 18:01:39,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-19 18:01:39,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 85 transitions. [2020-10-19 18:01:39,425 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 85 transitions. Word has length 16 [2020-10-19 18:01:39,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:01:39,426 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 85 transitions. [2020-10-19 18:01:39,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 18:01:39,426 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 85 transitions. [2020-10-19 18:01:39,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-19 18:01:39,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:01:39,427 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:01:39,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-19 18:01:39,428 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr21ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr26ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:01:39,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:01:39,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1337248604, now seen corresponding path program 1 times [2020-10-19 18:01:39,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:01:39,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799025690] [2020-10-19 18:01:39,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:01:39,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:39,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:01:39,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:39,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:01:39,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:39,558 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 18:01:39,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799025690] [2020-10-19 18:01:39,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:01:39,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-19 18:01:39,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864945392] [2020-10-19 18:01:39,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 18:01:39,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:01:39,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 18:01:39,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:01:39,560 INFO L87 Difference]: Start difference. First operand 78 states and 85 transitions. Second operand 9 states. [2020-10-19 18:01:39,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:01:39,908 INFO L93 Difference]: Finished difference Result 86 states and 91 transitions. [2020-10-19 18:01:39,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:01:39,909 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-10-19 18:01:39,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:01:39,910 INFO L225 Difference]: With dead ends: 86 [2020-10-19 18:01:39,910 INFO L226 Difference]: Without dead ends: 86 [2020-10-19 18:01:39,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-19 18:01:39,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-19 18:01:39,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 77. [2020-10-19 18:01:39,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-19 18:01:39,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 84 transitions. [2020-10-19 18:01:39,917 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 84 transitions. Word has length 24 [2020-10-19 18:01:39,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:01:39,919 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 84 transitions. [2020-10-19 18:01:39,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 18:01:39,919 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 84 transitions. [2020-10-19 18:01:39,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-19 18:01:39,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:01:39,920 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:01:39,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-19 18:01:39,920 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr21ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr26ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:01:39,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:01:39,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1337248605, now seen corresponding path program 1 times [2020-10-19 18:01:39,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:01:39,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426692896] [2020-10-19 18:01:39,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:01:39,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:40,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:01:40,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:40,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:01:40,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:40,143 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 18:01:40,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426692896] [2020-10-19 18:01:40,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:01:40,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-19 18:01:40,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438880973] [2020-10-19 18:01:40,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 18:01:40,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:01:40,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 18:01:40,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:01:40,145 INFO L87 Difference]: Start difference. First operand 77 states and 84 transitions. Second operand 9 states. [2020-10-19 18:01:40,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:01:40,480 INFO L93 Difference]: Finished difference Result 88 states and 93 transitions. [2020-10-19 18:01:40,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:01:40,480 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-10-19 18:01:40,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:01:40,481 INFO L225 Difference]: With dead ends: 88 [2020-10-19 18:01:40,481 INFO L226 Difference]: Without dead ends: 88 [2020-10-19 18:01:40,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-19 18:01:40,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-19 18:01:40,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 76. [2020-10-19 18:01:40,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-19 18:01:40,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 83 transitions. [2020-10-19 18:01:40,487 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 83 transitions. Word has length 24 [2020-10-19 18:01:40,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:01:40,487 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 83 transitions. [2020-10-19 18:01:40,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 18:01:40,487 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 83 transitions. [2020-10-19 18:01:40,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-19 18:01:40,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:01:40,488 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:01:40,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-19 18:01:40,489 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr21ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr26ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:01:40,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:01:40,490 INFO L82 PathProgramCache]: Analyzing trace with hash 920853620, now seen corresponding path program 1 times [2020-10-19 18:01:40,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:01:40,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695025204] [2020-10-19 18:01:40,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:01:40,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:40,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:01:40,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:40,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:01:40,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:40,615 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 18:01:40,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695025204] [2020-10-19 18:01:40,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:01:40,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-19 18:01:40,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246114647] [2020-10-19 18:01:40,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 18:01:40,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:01:40,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 18:01:40,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:01:40,617 INFO L87 Difference]: Start difference. First operand 76 states and 83 transitions. Second operand 8 states. [2020-10-19 18:01:40,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:01:40,883 INFO L93 Difference]: Finished difference Result 70 states and 73 transitions. [2020-10-19 18:01:40,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:01:40,883 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-10-19 18:01:40,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:01:40,884 INFO L225 Difference]: With dead ends: 70 [2020-10-19 18:01:40,884 INFO L226 Difference]: Without dead ends: 70 [2020-10-19 18:01:40,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:01:40,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-19 18:01:40,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-10-19 18:01:40,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-19 18:01:40,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 73 transitions. [2020-10-19 18:01:40,895 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 73 transitions. Word has length 26 [2020-10-19 18:01:40,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:01:40,900 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 73 transitions. [2020-10-19 18:01:40,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 18:01:40,900 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 73 transitions. [2020-10-19 18:01:40,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-19 18:01:40,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:01:40,901 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:01:40,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-19 18:01:40,902 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr21ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr26ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:01:40,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:01:40,903 INFO L82 PathProgramCache]: Analyzing trace with hash -2143461996, now seen corresponding path program 1 times [2020-10-19 18:01:40,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:01:40,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172679637] [2020-10-19 18:01:40,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:01:40,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:40,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:01:40,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:40,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:01:40,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:41,037 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 18:01:41,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172679637] [2020-10-19 18:01:41,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:01:41,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-19 18:01:41,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886402910] [2020-10-19 18:01:41,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 18:01:41,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:01:41,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 18:01:41,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:01:41,041 INFO L87 Difference]: Start difference. First operand 70 states and 73 transitions. Second operand 8 states. [2020-10-19 18:01:41,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:01:41,297 INFO L93 Difference]: Finished difference Result 69 states and 72 transitions. [2020-10-19 18:01:41,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:01:41,298 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-10-19 18:01:41,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:01:41,299 INFO L225 Difference]: With dead ends: 69 [2020-10-19 18:01:41,299 INFO L226 Difference]: Without dead ends: 69 [2020-10-19 18:01:41,299 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:01:41,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-19 18:01:41,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-10-19 18:01:41,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-19 18:01:41,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 72 transitions. [2020-10-19 18:01:41,305 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 72 transitions. Word has length 27 [2020-10-19 18:01:41,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:01:41,306 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 72 transitions. [2020-10-19 18:01:41,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 18:01:41,307 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 72 transitions. [2020-10-19 18:01:41,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-19 18:01:41,313 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:01:41,314 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:01:41,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-19 18:01:41,315 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr21ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr26ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:01:41,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:01:41,315 INFO L82 PathProgramCache]: Analyzing trace with hash -2022812355, now seen corresponding path program 1 times [2020-10-19 18:01:41,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:01:41,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388120299] [2020-10-19 18:01:41,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:01:41,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:41,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:01:41,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:41,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:01:41,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:41,474 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 18:01:41,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388120299] [2020-10-19 18:01:41,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:01:41,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-19 18:01:41,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854244195] [2020-10-19 18:01:41,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 18:01:41,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:01:41,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 18:01:41,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:01:41,478 INFO L87 Difference]: Start difference. First operand 69 states and 72 transitions. Second operand 8 states. [2020-10-19 18:01:41,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:01:41,815 INFO L93 Difference]: Finished difference Result 68 states and 71 transitions. [2020-10-19 18:01:41,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:01:41,816 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-10-19 18:01:41,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:01:41,817 INFO L225 Difference]: With dead ends: 68 [2020-10-19 18:01:41,817 INFO L226 Difference]: Without dead ends: 68 [2020-10-19 18:01:41,818 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:01:41,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-19 18:01:41,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-19 18:01:41,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-19 18:01:41,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 71 transitions. [2020-10-19 18:01:41,823 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 71 transitions. Word has length 28 [2020-10-19 18:01:41,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:01:41,823 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 71 transitions. [2020-10-19 18:01:41,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 18:01:41,823 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 71 transitions. [2020-10-19 18:01:41,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-19 18:01:41,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:01:41,824 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:01:41,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-19 18:01:41,825 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr21ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr26ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:01:41,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:01:41,825 INFO L82 PathProgramCache]: Analyzing trace with hash -700341473, now seen corresponding path program 1 times [2020-10-19 18:01:41,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:01:41,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370555083] [2020-10-19 18:01:41,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:01:41,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:41,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:01:41,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:41,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:01:41,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:41,999 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:01:42,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370555083] [2020-10-19 18:01:42,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133725709] [2020-10-19 18:01:42,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:01:42,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:42,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 41 conjunts are in the unsatisfiable core [2020-10-19 18:01:42,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:01:42,232 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 18:01:42,233 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:01:42,241 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:42,242 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:01:42,242 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-10-19 18:01:42,314 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:42,314 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-10-19 18:01:42,316 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:01:42,326 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:42,326 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:01:42,327 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:10 [2020-10-19 18:01:42,412 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 18:01:42,413 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:01:42,419 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:42,424 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:01:42,425 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:16 [2020-10-19 18:01:42,600 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:42,601 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 44 [2020-10-19 18:01:42,602 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:01:42,624 INFO L625 ElimStorePlain]: treesize reduction 26, result has 48.0 percent of original size [2020-10-19 18:01:42,626 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:01:42,627 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:24 [2020-10-19 18:01:42,744 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-19 18:01:42,766 INFO L350 Elim1Store]: treesize reduction 48, result has 27.3 percent of original size [2020-10-19 18:01:42,766 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 30 [2020-10-19 18:01:42,767 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:01:42,788 INFO L625 ElimStorePlain]: treesize reduction 11, result has 76.1 percent of original size [2020-10-19 18:01:42,792 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-19 18:01:42,793 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:39, output treesize:32 [2020-10-19 18:01:42,874 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:42,875 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2020-10-19 18:01:42,875 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:01:42,882 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:42,884 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:01:42,884 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:39, output treesize:11 [2020-10-19 18:01:42,899 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:01:42,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:01:42,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 22 [2020-10-19 18:01:42,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885711453] [2020-10-19 18:01:42,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-19 18:01:42,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:01:42,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-19 18:01:42,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2020-10-19 18:01:42,902 INFO L87 Difference]: Start difference. First operand 68 states and 71 transitions. Second operand 23 states. [2020-10-19 18:01:44,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:01:44,003 INFO L93 Difference]: Finished difference Result 74 states and 76 transitions. [2020-10-19 18:01:44,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-19 18:01:44,003 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 29 [2020-10-19 18:01:44,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:01:44,004 INFO L225 Difference]: With dead ends: 74 [2020-10-19 18:01:44,005 INFO L226 Difference]: Without dead ends: 74 [2020-10-19 18:01:44,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=223, Invalid=967, Unknown=0, NotChecked=0, Total=1190 [2020-10-19 18:01:44,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-19 18:01:44,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2020-10-19 18:01:44,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-19 18:01:44,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 74 transitions. [2020-10-19 18:01:44,015 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 74 transitions. Word has length 29 [2020-10-19 18:01:44,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:01:44,016 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 74 transitions. [2020-10-19 18:01:44,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-19 18:01:44,016 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 74 transitions. [2020-10-19 18:01:44,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-19 18:01:44,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:01:44,017 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:01:44,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-10-19 18:01:44,218 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr21ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr26ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:01:44,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:01:44,219 INFO L82 PathProgramCache]: Analyzing trace with hash -700341472, now seen corresponding path program 1 times [2020-10-19 18:01:44,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:01:44,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459214971] [2020-10-19 18:01:44,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:01:44,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:44,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:01:44,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:44,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:01:44,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:44,470 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:01:44,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459214971] [2020-10-19 18:01:44,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559249262] [2020-10-19 18:01:44,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:01:44,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:44,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 59 conjunts are in the unsatisfiable core [2020-10-19 18:01:44,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:01:44,636 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 18:01:44,637 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:01:44,644 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:44,644 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:01:44,645 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2020-10-19 18:01:44,718 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:44,721 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-10-19 18:01:44,725 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:01:44,737 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:44,737 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:01:44,737 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:16 [2020-10-19 18:01:44,862 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 18:01:44,862 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:01:44,885 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:44,891 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 18:01:44,892 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:01:44,916 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:44,920 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:01:44,920 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:47, output treesize:45 [2020-10-19 18:01:45,128 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:45,129 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 19 [2020-10-19 18:01:45,130 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:01:45,148 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:45,155 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2020-10-19 18:01:45,155 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:01:45,174 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:45,176 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:01:45,176 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:59, output treesize:52 [2020-10-19 18:01:45,368 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-19 18:01:45,382 INFO L350 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2020-10-19 18:01:45,383 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 30 [2020-10-19 18:01:45,383 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:01:45,407 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:45,412 INFO L173 IndexEqualityManager]: detected equality via solver [2020-10-19 18:01:45,424 INFO L350 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2020-10-19 18:01:45,425 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 32 [2020-10-19 18:01:45,426 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:01:45,447 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:45,452 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-19 18:01:45,453 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:82, output treesize:71 [2020-10-19 18:01:45,586 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:45,587 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 34 [2020-10-19 18:01:45,587 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:01:45,606 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:45,615 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:45,616 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 32 [2020-10-19 18:01:45,616 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:01:45,629 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:45,631 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:01:45,631 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:85, output treesize:23 [2020-10-19 18:01:45,693 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:01:45,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:01:45,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 22 [2020-10-19 18:01:45,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982674027] [2020-10-19 18:01:45,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-19 18:01:45,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:01:45,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-19 18:01:45,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=458, Unknown=0, NotChecked=0, Total=506 [2020-10-19 18:01:45,696 INFO L87 Difference]: Start difference. First operand 72 states and 74 transitions. Second operand 23 states. [2020-10-19 18:01:46,700 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2020-10-19 18:01:46,923 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 69 [2020-10-19 18:01:47,070 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2020-10-19 18:01:47,306 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 68 [2020-10-19 18:01:47,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:01:47,940 INFO L93 Difference]: Finished difference Result 73 states and 75 transitions. [2020-10-19 18:01:47,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-19 18:01:47,941 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 29 [2020-10-19 18:01:47,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:01:47,943 INFO L225 Difference]: With dead ends: 73 [2020-10-19 18:01:47,943 INFO L226 Difference]: Without dead ends: 73 [2020-10-19 18:01:47,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=187, Invalid=1073, Unknown=0, NotChecked=0, Total=1260 [2020-10-19 18:01:47,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-19 18:01:47,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2020-10-19 18:01:47,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-19 18:01:47,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 73 transitions. [2020-10-19 18:01:47,948 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 73 transitions. Word has length 29 [2020-10-19 18:01:47,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:01:47,949 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 73 transitions. [2020-10-19 18:01:47,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-19 18:01:47,949 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 73 transitions. [2020-10-19 18:01:47,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-19 18:01:47,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:01:47,950 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:01:48,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-10-19 18:01:48,161 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr21ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr26ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:01:48,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:01:48,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1717326518, now seen corresponding path program 1 times [2020-10-19 18:01:48,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:01:48,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378133128] [2020-10-19 18:01:48,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:01:48,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:48,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:01:48,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:48,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:01:48,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:48,268 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 18:01:48,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378133128] [2020-10-19 18:01:48,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:01:48,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-19 18:01:48,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700134962] [2020-10-19 18:01:48,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 18:01:48,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:01:48,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 18:01:48,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:01:48,271 INFO L87 Difference]: Start difference. First operand 71 states and 73 transitions. Second operand 9 states. [2020-10-19 18:01:48,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:01:48,554 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2020-10-19 18:01:48,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:01:48,554 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-19 18:01:48,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:01:48,555 INFO L225 Difference]: With dead ends: 70 [2020-10-19 18:01:48,556 INFO L226 Difference]: Without dead ends: 70 [2020-10-19 18:01:48,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-19 18:01:48,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-19 18:01:48,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-10-19 18:01:48,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-19 18:01:48,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 72 transitions. [2020-10-19 18:01:48,562 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 72 transitions. Word has length 29 [2020-10-19 18:01:48,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:01:48,563 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 72 transitions. [2020-10-19 18:01:48,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 18:01:48,563 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 72 transitions. [2020-10-19 18:01:48,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-19 18:01:48,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:01:48,564 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:01:48,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-19 18:01:48,564 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr21ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr26ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:01:48,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:01:48,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1697514592, now seen corresponding path program 1 times [2020-10-19 18:01:48,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:01:48,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087906465] [2020-10-19 18:01:48,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:01:48,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:48,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:01:48,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:48,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:01:48,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:48,710 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 18:01:48,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087906465] [2020-10-19 18:01:48,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:01:48,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-19 18:01:48,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933328166] [2020-10-19 18:01:48,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 18:01:48,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:01:48,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 18:01:48,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:01:48,712 INFO L87 Difference]: Start difference. First operand 70 states and 72 transitions. Second operand 9 states. [2020-10-19 18:01:48,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:01:48,984 INFO L93 Difference]: Finished difference Result 69 states and 71 transitions. [2020-10-19 18:01:48,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:01:48,985 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-10-19 18:01:48,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:01:48,986 INFO L225 Difference]: With dead ends: 69 [2020-10-19 18:01:48,986 INFO L226 Difference]: Without dead ends: 69 [2020-10-19 18:01:48,987 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:01:48,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-19 18:01:48,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-10-19 18:01:48,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-19 18:01:48,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 71 transitions. [2020-10-19 18:01:48,990 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 71 transitions. Word has length 30 [2020-10-19 18:01:48,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:01:48,991 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 71 transitions. [2020-10-19 18:01:48,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 18:01:48,991 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 71 transitions. [2020-10-19 18:01:48,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-19 18:01:48,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:01:48,992 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:01:48,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-19 18:01:48,992 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr21ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr26ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:01:48,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:01:48,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1697514593, now seen corresponding path program 1 times [2020-10-19 18:01:48,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:01:48,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151215288] [2020-10-19 18:01:48,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:01:49,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:49,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:01:49,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:49,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-19 18:01:49,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:49,097 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 18:01:49,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151215288] [2020-10-19 18:01:49,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:01:49,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 18:01:49,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014950911] [2020-10-19 18:01:49,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:01:49,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:01:49,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:01:49,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:01:49,102 INFO L87 Difference]: Start difference. First operand 69 states and 71 transitions. Second operand 6 states. [2020-10-19 18:01:49,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:01:49,264 INFO L93 Difference]: Finished difference Result 64 states and 66 transitions. [2020-10-19 18:01:49,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:01:49,265 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-10-19 18:01:49,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:01:49,266 INFO L225 Difference]: With dead ends: 64 [2020-10-19 18:01:49,266 INFO L226 Difference]: Without dead ends: 64 [2020-10-19 18:01:49,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:01:49,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-19 18:01:49,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2020-10-19 18:01:49,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-19 18:01:49,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 66 transitions. [2020-10-19 18:01:49,270 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 66 transitions. Word has length 30 [2020-10-19 18:01:49,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:01:49,270 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 66 transitions. [2020-10-19 18:01:49,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:01:49,270 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 66 transitions. [2020-10-19 18:01:49,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-19 18:01:49,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:01:49,271 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:01:49,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-19 18:01:49,272 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr21ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr26ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:01:49,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:01:49,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1541696294, now seen corresponding path program 1 times [2020-10-19 18:01:49,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:01:49,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227415369] [2020-10-19 18:01:49,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:01:49,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:01:49,296 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:01:49,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:01:49,323 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:01:49,360 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:01:49,360 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 18:01:49,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-19 18:01:49,382 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2020-10-19 18:01:49,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:01:49 BoogieIcfgContainer [2020-10-19 18:01:49,405 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:01:49,406 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:01:49,406 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:01:49,406 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:01:49,407 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:01:36" (3/4) ... [2020-10-19 18:01:49,417 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 18:01:49,417 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:01:49,421 INFO L168 Benchmark]: Toolchain (without parser) took 14678.98 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 374.3 MB). Free memory was 953.3 MB in the beginning and 1.3 GB in the end (delta: -367.4 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2020-10-19 18:01:49,421 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 18:01:49,422 INFO L168 Benchmark]: CACSL2BoogieTranslator took 691.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 953.3 MB in the beginning and 1.1 GB in the end (delta: -177.7 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. [2020-10-19 18:01:49,424 INFO L168 Benchmark]: Boogie Preprocessor took 118.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2020-10-19 18:01:49,425 INFO L168 Benchmark]: RCFGBuilder took 774.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 60.8 MB). Peak memory consumption was 60.8 MB. Max. memory is 11.5 GB. [2020-10-19 18:01:49,425 INFO L168 Benchmark]: TraceAbstraction took 13068.70 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 222.8 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -257.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:01:49,426 INFO L168 Benchmark]: Witness Printer took 11.59 ms. Allocated memory is still 1.4 GB. Free memory is still 1.3 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:01:49,431 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 691.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 953.3 MB in the beginning and 1.1 GB in the end (delta: -177.7 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 118.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 774.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 60.8 MB). Peak memory consumption was 60.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 13068.70 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 222.8 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -257.3 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 11.59 ms. Allocated memory is still 1.4 GB. Free memory is still 1.3 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: 537]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 537. Possible FailurePath: [L539] struct item *list = ((void *)0); VAL [list={3:0}] [L541] CALL append(&list) VAL [plist={3:0}] [L530] struct item *item = malloc(sizeof *item); VAL [item={1:0}, malloc(sizeof *item)={1:0}, plist={3:0}, plist={3:0}] [L531] EXPR \read(**plist) VAL [\read(**plist)={0:0}, item={1:0}, malloc(sizeof *item)={1:0}, plist={3:0}, plist={3:0}] [L531] item->next = *plist VAL [\read(**plist)={0:0}, item={1:0}, malloc(sizeof *item)={1:0}, plist={3:0}, plist={3:0}] [L532] EXPR item->next VAL [item={1:0}, item->next={0:0}, malloc(sizeof *item)={1:0}, plist={3:0}, plist={3:0}] [L532-L534] EXPR (item->next) ? item->next->data : malloc(sizeof *item) [L532-L534] EXPR (item->next) ? item->next->data : malloc(sizeof *item) VAL [(item->next) ? item->next->data : malloc(sizeof *item)={-1:0}, item={1:0}, item->next={0:0}, malloc(sizeof *item)={-1:0}, malloc(sizeof *item)={1:0}, plist={3:0}, plist={3:0}] [L532-L534] item->data = (item->next) ? item->next->data : malloc(sizeof *item) VAL [(item->next) ? item->next->data : malloc(sizeof *item)={-1:0}, item={1:0}, item->next={0:0}, malloc(sizeof *item)={-1:0}, malloc(sizeof *item)={1:0}, plist={3:0}, plist={3:0}] [L535] *plist = item VAL [item={1:0}, malloc(sizeof *item)={-1:0}, malloc(sizeof *item)={1:0}, plist={3:0}, plist={3:0}] [L541] RET append(&list) VAL [list={3:0}] [L542] COND FALSE !(__VERIFIER_nondet_int()) [L543] \read(*list) VAL [\read(*list)={1:0}, list={3:0}] [L543] COND TRUE \read(*list) [L544] EXPR \read(*list) VAL [\read(*list)={1:0}, list={3:0}] [L544] EXPR list->next VAL [\read(*list)={1:0}, list={3:0}, list->next={0:0}] [L544] struct item *next = list->next; [L545] EXPR \read(*list) VAL [\read(*list)={1:0}, list={3:0}, next={0:0}] [L545] free(list) VAL [\read(*list)={1:0}, list={3:0}, next={0:0}] [L545] free(list) VAL [\read(*list)={1:0}, list={3:0}, next={0:0}] [L545] free(list) [L546] list = next VAL [list={3:0}, next={0:0}] [L548] \read(*list) VAL [\read(*list)={0:0}, list={3:0}, next={0:0}] [L548] COND FALSE !(\read(*list)) [L553] return 0; [L539] struct item *list = ((void *)0); [L553] return 0; VAL [\result=0, next={0:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 109 locations, 42 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.9s, OverallIterations: 18, TraceHistogramMax: 2, AutomataDifference: 7.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 786 SDtfs, 816 SDslu, 2390 SDs, 0 SdLazy, 4068 SolverSat, 194 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 268 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 4.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=89occurred in iteration=0, 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, 17 MinimizatonAttempts, 45 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 445 NumberOfCodeBlocks, 445 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 392 ConstructedInterpolants, 25 QuantifiedInterpolants, 106615 SizeOfPredicates, 41 NumberOfNonLiveVariables, 466 ConjunctsInSsa, 100 ConjunctsInUnsatCore, 19 InterpolantComputations, 15 PerfectInterpolantSequences, 6/28 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 18:01:51,390 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:01:51,392 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:01:51,416 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:01:51,417 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:01:51,418 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:01:51,419 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:01:51,421 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:01:51,423 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:01:51,424 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:01:51,425 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:01:51,427 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:01:51,427 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:01:51,428 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:01:51,429 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:01:51,431 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:01:51,432 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:01:51,433 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:01:51,434 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:01:51,436 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:01:51,438 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:01:51,439 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:01:51,441 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:01:51,442 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:01:51,445 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:01:51,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:01:51,445 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:01:51,446 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:01:51,447 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:01:51,448 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:01:51,448 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:01:51,449 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:01:51,450 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:01:51,451 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:01:51,452 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:01:51,452 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:01:51,453 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:01:51,454 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:01:51,454 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:01:51,455 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:01:51,456 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:01:51,457 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2020-10-19 18:01:51,480 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:01:51,480 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:01:51,482 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:01:51,482 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:01:51,482 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:01:51,483 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:01:51,483 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:01:51,483 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:01:51,483 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:01:51,484 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:01:51,484 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:01:51,484 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 18:01:51,485 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 18:01:51,485 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-19 18:01:51,485 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:01:51,485 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 18:01:51,486 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-19 18:01:51,486 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-19 18:01:51,486 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:01:51,486 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:01:51,487 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:01:51,487 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:01:51,487 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:01:51,488 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:01:51,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:01:51,488 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:01:51,488 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:01:51,489 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-19 18:01:51,489 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-19 18:01:51,489 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:01:51,489 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-19 18:01:51,490 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 -> aeec7a18a8140b87b664dd42e07dd87d1c028ac9 [2020-10-19 18:01:51,805 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:01:51,822 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:01:51,828 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:01:51,830 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:01:51,832 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:01:51,833 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0232-1.i [2020-10-19 18:01:51,901 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a1d46003/2f82d50a82084abd840c62fcad6fc283/FLAG33e723651 [2020-10-19 18:01:52,433 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:01:52,434 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0232-1.i [2020-10-19 18:01:52,450 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a1d46003/2f82d50a82084abd840c62fcad6fc283/FLAG33e723651 [2020-10-19 18:01:52,760 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a1d46003/2f82d50a82084abd840c62fcad6fc283 [2020-10-19 18:01:52,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:01:52,772 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 18:01:52,773 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:01:52,773 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:01:52,777 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:01:52,778 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:01:52" (1/1) ... [2020-10-19 18:01:52,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a3640a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:01:52, skipping insertion in model container [2020-10-19 18:01:52,783 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:01:52" (1/1) ... [2020-10-19 18:01:52,794 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:01:52,855 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:01:53,385 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:01:53,404 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:01:53,448 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:01:53,507 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:01:53,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:01:53 WrapperNode [2020-10-19 18:01:53,508 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:01:53,509 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:01:53,509 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:01:53,510 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:01:53,526 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:01:53" (1/1) ... [2020-10-19 18:01:53,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:01:53" (1/1) ... [2020-10-19 18:01:53,553 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:01:53" (1/1) ... [2020-10-19 18:01:53,554 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:01:53" (1/1) ... [2020-10-19 18:01:53,576 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:01:53" (1/1) ... [2020-10-19 18:01:53,581 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:01:53" (1/1) ... [2020-10-19 18:01:53,586 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:01:53" (1/1) ... [2020-10-19 18:01:53,594 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:01:53,595 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:01:53,595 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:01:53,595 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:01:53,596 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:01:53" (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 18:01:53,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 18:01:53,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:01:53,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2020-10-19 18:01:53,660 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-19 18:01:53,661 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-19 18:01:53,661 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-19 18:01:53,661 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-19 18:01:53,661 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-19 18:01:53,661 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-19 18:01:53,661 INFO L138 BoogieDeclarations]: Found implementation of procedure append [2020-10-19 18:01:53,661 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 18:01:53,662 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-19 18:01:53,662 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-19 18:01:53,662 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-19 18:01:53,662 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-19 18:01:53,662 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-19 18:01:53,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 18:01:53,663 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-19 18:01:53,663 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-19 18:01:53,663 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-19 18:01:53,663 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-19 18:01:53,663 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-19 18:01:53,664 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-19 18:01:53,664 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-19 18:01:53,664 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-19 18:01:53,664 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-19 18:01:53,664 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-19 18:01:53,664 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-19 18:01:53,664 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-19 18:01:53,664 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-19 18:01:53,665 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-19 18:01:53,665 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-19 18:01:53,665 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-19 18:01:53,665 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-19 18:01:53,665 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-19 18:01:53,665 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-19 18:01:53,666 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-19 18:01:53,666 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-19 18:01:53,666 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-19 18:01:53,666 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-19 18:01:53,666 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-19 18:01:53,666 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-19 18:01:53,666 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-19 18:01:53,667 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-19 18:01:53,667 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-19 18:01:53,667 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-19 18:01:53,667 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-19 18:01:53,667 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-19 18:01:53,667 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-19 18:01:53,667 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-19 18:01:53,668 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-19 18:01:53,668 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-19 18:01:53,668 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-19 18:01:53,668 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-19 18:01:53,668 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-19 18:01:53,668 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-19 18:01:53,668 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-19 18:01:53,669 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-19 18:01:53,669 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-19 18:01:53,669 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-19 18:01:53,669 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-19 18:01:53,669 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-19 18:01:53,669 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-19 18:01:53,669 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-19 18:01:53,670 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-19 18:01:53,670 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-19 18:01:53,670 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-19 18:01:53,670 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-19 18:01:53,670 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-19 18:01:53,670 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-19 18:01:53,670 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-19 18:01:53,671 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-19 18:01:53,671 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-19 18:01:53,671 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-19 18:01:53,671 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-19 18:01:53,671 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-19 18:01:53,671 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-19 18:01:53,671 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-19 18:01:53,672 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-19 18:01:53,672 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-19 18:01:53,672 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-19 18:01:53,672 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-19 18:01:53,672 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-19 18:01:53,672 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-19 18:01:53,672 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-19 18:01:53,673 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-19 18:01:53,673 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-19 18:01:53,673 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-19 18:01:53,673 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-19 18:01:53,673 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-19 18:01:53,673 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-19 18:01:53,673 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-19 18:01:53,674 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-19 18:01:53,674 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-19 18:01:53,674 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-19 18:01:53,674 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-19 18:01:53,674 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-19 18:01:53,674 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-19 18:01:53,674 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-19 18:01:53,675 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-19 18:01:53,675 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-19 18:01:53,675 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-19 18:01:53,675 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-19 18:01:53,675 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-19 18:01:53,675 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-19 18:01:53,675 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-19 18:01:53,676 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-19 18:01:53,676 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-19 18:01:53,676 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-19 18:01:53,676 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-19 18:01:53,676 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-19 18:01:53,676 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-19 18:01:53,676 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-19 18:01:53,677 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-19 18:01:53,677 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-19 18:01:53,677 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-19 18:01:53,677 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-19 18:01:53,677 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-19 18:01:53,677 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-19 18:01:53,677 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-19 18:01:53,678 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-19 18:01:53,678 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-19 18:01:53,678 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-19 18:01:53,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-19 18:01:53,678 INFO L130 BoogieDeclarations]: Found specification of procedure append [2020-10-19 18:01:53,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 18:01:53,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-19 18:01:53,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-19 18:01:53,679 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 18:01:53,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-19 18:01:53,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 18:01:53,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 18:01:53,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-19 18:01:53,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:01:53,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2020-10-19 18:01:53,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-10-19 18:01:53,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-10-19 18:01:54,454 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:01:54,455 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-19 18:01:54,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:01:54 BoogieIcfgContainer [2020-10-19 18:01:54,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:01:54,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:01:54,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:01:54,462 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:01:54,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:01:52" (1/3) ... [2020-10-19 18:01:54,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2db2e2a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:01:54, skipping insertion in model container [2020-10-19 18:01:54,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:01:53" (2/3) ... [2020-10-19 18:01:54,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2db2e2a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:01:54, skipping insertion in model container [2020-10-19 18:01:54,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:01:54" (3/3) ... [2020-10-19 18:01:54,466 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0232-1.i [2020-10-19 18:01:54,479 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:01:54,487 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 42 error locations. [2020-10-19 18:01:54,503 INFO L253 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2020-10-19 18:01:54,526 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:01:54,527 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 18:01:54,527 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:01:54,527 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:01:54,528 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:01:54,528 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:01:54,528 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:01:54,528 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:01:54,551 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2020-10-19 18:01:54,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-19 18:01:54,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:01:54,563 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:01:54,564 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr21ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr26ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:01:54,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:01:54,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1603877397, now seen corresponding path program 1 times [2020-10-19 18:01:54,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:01:54,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1996244363] [2020-10-19 18:01:54,584 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 18:01:54,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:54,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-19 18:01:54,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:01:54,784 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 18:01:54,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:01:54,808 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 18:01:54,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1996244363] [2020-10-19 18:01:54,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:01:54,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-19 18:01:54,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439174158] [2020-10-19 18:01:54,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-19 18:01:54,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:01:54,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-19 18:01:54,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-19 18:01:54,836 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 2 states. [2020-10-19 18:01:54,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:01:54,861 INFO L93 Difference]: Finished difference Result 88 states and 91 transitions. [2020-10-19 18:01:54,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-19 18:01:54,862 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-19 18:01:54,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:01:54,874 INFO L225 Difference]: With dead ends: 88 [2020-10-19 18:01:54,875 INFO L226 Difference]: Without dead ends: 85 [2020-10-19 18:01:54,877 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-19 18:01:54,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-19 18:01:54,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-10-19 18:01:54,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-19 18:01:54,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 88 transitions. [2020-10-19 18:01:54,925 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 88 transitions. Word has length 8 [2020-10-19 18:01:54,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:01:54,926 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 88 transitions. [2020-10-19 18:01:54,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-19 18:01:54,926 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 88 transitions. [2020-10-19 18:01:54,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-19 18:01:54,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:01:54,927 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:01:55,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-19 18:01:55,145 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr21ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr26ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:01:55,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:01:55,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1819511446, now seen corresponding path program 1 times [2020-10-19 18:01:55,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:01:55,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [891798863] [2020-10-19 18:01:55,147 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 18:01:55,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:55,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 18:01:55,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:01:55,337 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 18:01:55,338 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:01:55,342 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:55,342 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:01:55,343 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 18:01:55,417 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:55,418 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 41 [2020-10-19 18:01:55,423 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-19 18:01:55,425 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 18:01:55,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [891798863] [2020-10-19 18:01:55,427 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 1) [2020-10-19 18:01:55,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1210498155] [2020-10-19 18:01:55,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-19 18:01:55,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:55,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-19 18:01:55,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:01:55,684 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 18:01:55,685 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:01:55,692 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:55,693 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:01:55,693 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-19 18:01:55,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:01:55,749 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2020-10-19 18:01:55,750 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:01:55,764 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:55,767 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-19 18:01:55,768 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:20, output treesize:17 [2020-10-19 18:01:55,795 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 18:01:55,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:01:55,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:01:55,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:01:55,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-10-19 18:01:55,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077312624] [2020-10-19 18:01:55,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 18:01:55,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:01:55,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 18:01:55,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:01:55,892 INFO L87 Difference]: Start difference. First operand 85 states and 88 transitions. Second operand 8 states. [2020-10-19 18:01:56,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:01:56,629 INFO L93 Difference]: Finished difference Result 98 states and 102 transitions. [2020-10-19 18:01:56,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:01:56,630 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 9 [2020-10-19 18:01:56,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:01:56,632 INFO L225 Difference]: With dead ends: 98 [2020-10-19 18:01:56,632 INFO L226 Difference]: Without dead ends: 98 [2020-10-19 18:01:56,633 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-19 18:01:56,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-19 18:01:56,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 86. [2020-10-19 18:01:56,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-19 18:01:56,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 95 transitions. [2020-10-19 18:01:56,644 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 95 transitions. Word has length 9 [2020-10-19 18:01:56,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:01:56,644 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 95 transitions. [2020-10-19 18:01:56,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 18:01:56,645 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 95 transitions. [2020-10-19 18:01:56,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-19 18:01:56,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:01:56,645 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:01:57,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk,3 mathsat -unsat_core_generation=3 [2020-10-19 18:01:57,049 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr21ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr26ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:01:57,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:01:57,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1819511447, now seen corresponding path program 1 times [2020-10-19 18:01:57,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:01:57,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [161980007] [2020-10-19 18:01:57,051 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 18:01:57,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:57,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-19 18:01:57,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:01:57,197 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 18:01:57,198 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:01:57,209 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:57,217 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 18:01:57,217 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:01:57,227 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:57,228 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:01:57,228 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2020-10-19 18:01:57,294 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:57,295 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 17 [2020-10-19 18:01:57,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [161980007] [2020-10-19 18:01:57,296 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 1) [2020-10-19 18:01:57,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [964407740] [2020-10-19 18:01:57,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-19 18:01:57,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:57,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-19 18:01:57,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:01:57,555 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 18:01:57,556 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:01:57,566 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:57,566 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:01:57,567 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-10-19 18:01:57,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:01:57,628 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2020-10-19 18:01:57,629 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:01:57,646 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:57,648 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-19 18:01:57,649 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:22 [2020-10-19 18:01:57,683 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 18:01:57,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:01:57,741 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-19 18:01:58,075 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 18:01:58,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:01:58,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-10-19 18:01:58,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141147143] [2020-10-19 18:01:58,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 18:01:58,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:01:58,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 18:01:58,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:01:58,079 INFO L87 Difference]: Start difference. First operand 86 states and 95 transitions. Second operand 8 states. [2020-10-19 18:01:59,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:01:59,005 INFO L93 Difference]: Finished difference Result 83 states and 89 transitions. [2020-10-19 18:01:59,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:01:59,006 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 9 [2020-10-19 18:01:59,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:01:59,010 INFO L225 Difference]: With dead ends: 83 [2020-10-19 18:01:59,010 INFO L226 Difference]: Without dead ends: 83 [2020-10-19 18:01:59,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:01:59,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-19 18:01:59,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 76. [2020-10-19 18:01:59,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-19 18:01:59,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 82 transitions. [2020-10-19 18:01:59,018 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 82 transitions. Word has length 9 [2020-10-19 18:01:59,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:01:59,019 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 82 transitions. [2020-10-19 18:01:59,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 18:01:59,019 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 82 transitions. [2020-10-19 18:01:59,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-19 18:01:59,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:01:59,020 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:01:59,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3,6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-19 18:01:59,425 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr21ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr26ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:01:59,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:01:59,426 INFO L82 PathProgramCache]: Analyzing trace with hash 570280076, now seen corresponding path program 1 times [2020-10-19 18:01:59,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:01:59,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [298124366] [2020-10-19 18:01:59,427 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 18:01:59,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:01:59,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-19 18:01:59,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:01:59,536 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 18:01:59,536 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:01:59,539 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:01:59,539 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:01:59,539 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 18:01:59,544 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 18:01:59,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:01:59,560 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 18:01:59,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [298124366] [2020-10-19 18:01:59,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:01:59,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-19 18:01:59,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588842053] [2020-10-19 18:01:59,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 18:01:59,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:01:59,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:01:59,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:01:59,565 INFO L87 Difference]: Start difference. First operand 76 states and 82 transitions. Second operand 3 states. [2020-10-19 18:01:59,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:01:59,715 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2020-10-19 18:01:59,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:01:59,716 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-19 18:01:59,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:01:59,717 INFO L225 Difference]: With dead ends: 72 [2020-10-19 18:01:59,718 INFO L226 Difference]: Without dead ends: 72 [2020-10-19 18:01:59,718 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:01:59,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-19 18:01:59,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-10-19 18:01:59,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-19 18:01:59,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 78 transitions. [2020-10-19 18:01:59,725 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 78 transitions. Word has length 10 [2020-10-19 18:01:59,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:01:59,726 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 78 transitions. [2020-10-19 18:01:59,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 18:01:59,726 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 78 transitions. [2020-10-19 18:01:59,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-19 18:01:59,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:01:59,727 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:01:59,927 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-19 18:01:59,929 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr21ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr26ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:01:59,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:01:59,929 INFO L82 PathProgramCache]: Analyzing trace with hash 570280077, now seen corresponding path program 1 times [2020-10-19 18:01:59,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:01:59,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [249741928] [2020-10-19 18:01:59,931 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 18:02:00,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:02:00,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 18:02:00,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:02:00,051 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 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 18:02:00,052 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:02:00,056 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:02:00,057 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:02:00,057 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-19 18:02:00,072 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 18:02:00,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:02:00,124 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 18:02:00,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [249741928] [2020-10-19 18:02:00,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:02:00,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2020-10-19 18:02:00,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239427953] [2020-10-19 18:02:00,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:02:00,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:02:00,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:02:00,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:02:00,126 INFO L87 Difference]: Start difference. First operand 72 states and 78 transitions. Second operand 4 states. [2020-10-19 18:02:00,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:02:00,327 INFO L93 Difference]: Finished difference Result 68 states and 74 transitions. [2020-10-19 18:02:00,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:02:00,329 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-19 18:02:00,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:02:00,330 INFO L225 Difference]: With dead ends: 68 [2020-10-19 18:02:00,331 INFO L226 Difference]: Without dead ends: 68 [2020-10-19 18:02:00,331 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:02:00,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-19 18:02:00,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-19 18:02:00,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-19 18:02:00,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 74 transitions. [2020-10-19 18:02:00,337 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 74 transitions. Word has length 10 [2020-10-19 18:02:00,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:02:00,337 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 74 transitions. [2020-10-19 18:02:00,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:02:00,337 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 74 transitions. [2020-10-19 18:02:00,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-19 18:02:00,338 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:02:00,338 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:02:00,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-10-19 18:02:00,539 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr21ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr26ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:02:00,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:02:00,540 INFO L82 PathProgramCache]: Analyzing trace with hash -771427871, now seen corresponding path program 1 times [2020-10-19 18:02:00,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:02:00,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1606599898] [2020-10-19 18:02:00,541 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 18:02:00,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:02:00,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-19 18:02:00,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:02:00,784 INFO L350 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2020-10-19 18:02:00,785 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 18 [2020-10-19 18:02:00,786 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:02:00,803 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:02:00,830 INFO L350 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2020-10-19 18:02:00,831 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 18 [2020-10-19 18:02:00,832 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:02:00,847 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:02:00,849 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-19 18:02:00,849 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:45, output treesize:37 [2020-10-19 18:02:00,922 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:02:00,922 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2020-10-19 18:02:00,923 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:02:00,935 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:02:00,946 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:02:00,946 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2020-10-19 18:02:00,947 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:02:00,958 INFO L625 ElimStorePlain]: treesize reduction 12, result has 36.8 percent of original size [2020-10-19 18:02:00,958 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:02:00,959 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:51, output treesize:7 [2020-10-19 18:02:00,980 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 18:02:00,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:02:01,037 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 18:02:01,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1606599898] [2020-10-19 18:02:01,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:02:01,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 10 [2020-10-19 18:02:01,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684886112] [2020-10-19 18:02:01,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-19 18:02:01,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:02:01,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-19 18:02:01,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:02:01,040 INFO L87 Difference]: Start difference. First operand 68 states and 74 transitions. Second operand 10 states. [2020-10-19 18:02:01,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:02:01,819 INFO L93 Difference]: Finished difference Result 80 states and 87 transitions. [2020-10-19 18:02:01,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-19 18:02:01,819 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-10-19 18:02:01,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:02:01,820 INFO L225 Difference]: With dead ends: 80 [2020-10-19 18:02:01,821 INFO L226 Difference]: Without dead ends: 80 [2020-10-19 18:02:01,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-10-19 18:02:01,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-19 18:02:01,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 75. [2020-10-19 18:02:01,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-19 18:02:01,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 82 transitions. [2020-10-19 18:02:01,829 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 82 transitions. Word has length 15 [2020-10-19 18:02:01,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:02:01,829 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 82 transitions. [2020-10-19 18:02:01,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-19 18:02:01,830 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 82 transitions. [2020-10-19 18:02:01,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-19 18:02:01,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:02:01,831 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 18:02:02,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-10-19 18:02:02,044 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr21ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr26ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:02:02,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:02:02,045 INFO L82 PathProgramCache]: Analyzing trace with hash 195740584, now seen corresponding path program 1 times [2020-10-19 18:02:02,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:02:02,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [573849085] [2020-10-19 18:02:02,046 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 18:02:02,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:02:02,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-19 18:02:02,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:02:02,231 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 18:02:02,232 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:02:02,246 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:02:02,252 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 18:02:02,252 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:02:02,267 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:02:02,269 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 18:02:02,269 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:28, output treesize:17 [2020-10-19 18:02:02,326 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 15 treesize of output 7 [2020-10-19 18:02:02,327 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:02:02,337 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:02:02,341 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 18:02:02,341 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:02:02,348 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:02:02,348 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 18:02:02,349 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:31, output treesize:9 [2020-10-19 18:02:02,378 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 18:02:02,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:02:02,776 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 36 treesize of output 28 [2020-10-19 18:02:02,782 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 3 xjuncts. [2020-10-19 18:02:02,815 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:02:02,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:02:02,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:02:02,825 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:02:02,849 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:02:02,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:02:02,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:02:02,855 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-10-19 18:02:02,876 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:02:02,877 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-2 vars, End of recursive call: and 4 xjuncts. [2020-10-19 18:02:02,877 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:61, output treesize:19 [2020-10-19 18:02:02,952 INFO L603 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-10-19 18:02:02,972 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2020-10-19 18:02:02,973 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:02:02,985 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2020-10-19 18:02:02,985 INFO L545 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:02:03,002 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2020-10-19 18:02:03,003 INFO L545 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:02:03,021 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2020-10-19 18:02:03,022 INFO L545 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:02:03,080 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:02:03,082 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 4 xjuncts. [2020-10-19 18:02:03,082 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:55, output treesize:45 [2020-10-19 18:02:03,300 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 18:02:03,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [573849085] [2020-10-19 18:02:03,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:02:03,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2020-10-19 18:02:03,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783256771] [2020-10-19 18:02:03,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-19 18:02:03,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:02:03,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-19 18:02:03,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:02:03,303 INFO L87 Difference]: Start difference. First operand 75 states and 82 transitions. Second operand 12 states. [2020-10-19 18:02:04,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:02:04,171 INFO L93 Difference]: Finished difference Result 85 states and 90 transitions. [2020-10-19 18:02:04,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:02:04,172 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-19 18:02:04,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:02:04,173 INFO L225 Difference]: With dead ends: 85 [2020-10-19 18:02:04,173 INFO L226 Difference]: Without dead ends: 85 [2020-10-19 18:02:04,174 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-10-19 18:02:04,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-19 18:02:04,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 74. [2020-10-19 18:02:04,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-19 18:02:04,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 81 transitions. [2020-10-19 18:02:04,180 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 81 transitions. Word has length 23 [2020-10-19 18:02:04,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:02:04,182 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 81 transitions. [2020-10-19 18:02:04,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-19 18:02:04,182 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 81 transitions. [2020-10-19 18:02:04,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-19 18:02:04,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:02:04,183 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 18:02:04,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-10-19 18:02:04,403 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr21ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr26ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:02:04,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:02:04,403 INFO L82 PathProgramCache]: Analyzing trace with hash 195740583, now seen corresponding path program 1 times [2020-10-19 18:02:04,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:02:04,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [453992237] [2020-10-19 18:02:04,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-10-19 18:02:04,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:02:04,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 18:02:04,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:02:04,570 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 18:02:04,570 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:02:04,576 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:02:04,577 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 18:02:04,577 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:9 [2020-10-19 18:02:04,603 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 11 [2020-10-19 18:02:04,604 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:02:04,606 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:02:04,606 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 18:02:04,606 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:7 [2020-10-19 18:02:04,617 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 18:02:04,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:02:04,722 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 32 treesize of output 28 [2020-10-19 18:02:04,723 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:02:04,748 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:02:04,749 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:02:04,750 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:28 [2020-10-19 18:02:04,844 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-10-19 18:02:04,861 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 18:02:04,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [453992237] [2020-10-19 18:02:04,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:02:04,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2020-10-19 18:02:04,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112770216] [2020-10-19 18:02:04,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 18:02:04,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:02:04,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 18:02:04,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:02:04,864 INFO L87 Difference]: Start difference. First operand 74 states and 81 transitions. Second operand 8 states. [2020-10-19 18:02:05,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:02:05,337 INFO L93 Difference]: Finished difference Result 82 states and 87 transitions. [2020-10-19 18:02:05,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:02:05,337 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-10-19 18:02:05,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:02:05,339 INFO L225 Difference]: With dead ends: 82 [2020-10-19 18:02:05,339 INFO L226 Difference]: Without dead ends: 82 [2020-10-19 18:02:05,339 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:02:05,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-19 18:02:05,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 73. [2020-10-19 18:02:05,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-19 18:02:05,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 80 transitions. [2020-10-19 18:02:05,345 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 80 transitions. Word has length 23 [2020-10-19 18:02:05,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:02:05,345 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 80 transitions. [2020-10-19 18:02:05,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 18:02:05,345 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 80 transitions. [2020-10-19 18:02:05,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-19 18:02:05,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:02:05,346 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:02:05,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-10-19 18:02:05,554 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr21ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr26ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:02:05,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:02:05,555 INFO L82 PathProgramCache]: Analyzing trace with hash -851693409, now seen corresponding path program 1 times [2020-10-19 18:02:05,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:02:05,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1172494086] [2020-10-19 18:02:05,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-10-19 18:02:05,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:02:05,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-19 18:02:05,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:02:05,706 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-19 18:02:05,707 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:02:05,713 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:02:05,714 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 18:02:05,714 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:8 [2020-10-19 18:02:05,737 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 8 [2020-10-19 18:02:05,738 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:02:05,740 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:02:05,740 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 18:02:05,740 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:16, output treesize:4 [2020-10-19 18:02:05,750 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 18:02:05,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:02:05,851 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 30 treesize of output 26 [2020-10-19 18:02:05,854 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 3 xjuncts. [2020-10-19 18:02:05,873 INFO L625 ElimStorePlain]: treesize reduction 9, result has 55.0 percent of original size [2020-10-19 18:02:05,873 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2020-10-19 18:02:05,873 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:11 [2020-10-19 18:02:05,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:02:05,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1172494086] [2020-10-19 18:02:05,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:02:05,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2020-10-19 18:02:05,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136842939] [2020-10-19 18:02:05,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:02:05,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:02:05,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:02:05,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:02:05,884 INFO L87 Difference]: Start difference. First operand 73 states and 80 transitions. Second operand 6 states. [2020-10-19 18:02:06,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:02:06,214 INFO L93 Difference]: Finished difference Result 67 states and 70 transitions. [2020-10-19 18:02:06,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:02:06,214 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-10-19 18:02:06,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:02:06,215 INFO L225 Difference]: With dead ends: 67 [2020-10-19 18:02:06,215 INFO L226 Difference]: Without dead ends: 67 [2020-10-19 18:02:06,216 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:02:06,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-19 18:02:06,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-10-19 18:02:06,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-19 18:02:06,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2020-10-19 18:02:06,221 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 25 [2020-10-19 18:02:06,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:02:06,221 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2020-10-19 18:02:06,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:02:06,221 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2020-10-19 18:02:06,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-19 18:02:06,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:02:06,222 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:02:06,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-10-19 18:02:06,428 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr21ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr26ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:02:06,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:02:06,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1257845026, now seen corresponding path program 1 times [2020-10-19 18:02:06,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:02:06,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [276630481] [2020-10-19 18:02:06,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2020-10-19 18:02:06,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:02:06,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-19 18:02:06,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:02:06,576 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 18:02:06,577 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:02:06,579 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:02:06,579 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:02:06,579 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-10-19 18:02:06,596 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 15 treesize of output 7 [2020-10-19 18:02:06,597 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:02:06,599 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:02:06,599 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 18:02:06,599 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-10-19 18:02:06,608 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 18:02:06,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:02:06,683 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 28 treesize of output 24 [2020-10-19 18:02:06,686 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 3 xjuncts. [2020-10-19 18:02:06,692 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:02:06,692 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2020-10-19 18:02:06,693 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:10 [2020-10-19 18:02:06,701 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 18:02:06,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [276630481] [2020-10-19 18:02:06,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:02:06,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-10-19 18:02:06,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120355833] [2020-10-19 18:02:06,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:02:06,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:02:06,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:02:06,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:02:06,703 INFO L87 Difference]: Start difference. First operand 67 states and 70 transitions. Second operand 6 states. [2020-10-19 18:02:06,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:02:06,904 INFO L93 Difference]: Finished difference Result 66 states and 69 transitions. [2020-10-19 18:02:06,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:02:06,905 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-10-19 18:02:06,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:02:06,906 INFO L225 Difference]: With dead ends: 66 [2020-10-19 18:02:06,906 INFO L226 Difference]: Without dead ends: 66 [2020-10-19 18:02:06,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:02:06,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-19 18:02:06,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-10-19 18:02:06,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-19 18:02:06,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2020-10-19 18:02:06,911 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 26 [2020-10-19 18:02:06,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:02:06,911 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2020-10-19 18:02:06,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:02:06,911 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2020-10-19 18:02:06,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-19 18:02:06,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:02:06,913 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:02:07,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2020-10-19 18:02:07,117 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr21ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr26ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:02:07,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:02:07,118 INFO L82 PathProgramCache]: Analyzing trace with hash -25957239, now seen corresponding path program 1 times [2020-10-19 18:02:07,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:02:07,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1493935078] [2020-10-19 18:02:07,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2020-10-19 18:02:07,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:02:07,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-19 18:02:07,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:02:07,297 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 18:02:07,297 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:02:07,304 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:02:07,305 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 18:02:07,305 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:9 [2020-10-19 18:02:07,344 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:02:07,345 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 44 [2020-10-19 18:02:07,346 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:02:07,365 INFO L625 ElimStorePlain]: treesize reduction 26, result has 36.6 percent of original size [2020-10-19 18:02:07,365 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:02:07,365 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2020-10-19 18:02:07,433 INFO L350 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2020-10-19 18:02:07,433 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 22 [2020-10-19 18:02:07,434 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:02:07,448 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:02:07,450 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-19 18:02:07,450 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:32, output treesize:28 [2020-10-19 18:02:07,511 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:02:07,512 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 26 [2020-10-19 18:02:07,513 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:02:07,517 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:02:07,517 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:02:07,518 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:35, output treesize:13 [2020-10-19 18:02:07,548 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:02:07,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:02:07,716 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 32 treesize of output 28 [2020-10-19 18:02:07,717 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:02:07,739 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:02:07,740 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:02:07,740 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:28 [2020-10-19 18:02:07,872 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-10-19 18:02:07,882 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:02:07,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1493935078] [2020-10-19 18:02:07,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:02:07,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2020-10-19 18:02:07,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271940512] [2020-10-19 18:02:07,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-19 18:02:07,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:02:07,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-19 18:02:07,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-19 18:02:07,884 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand 14 states. [2020-10-19 18:02:09,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:02:09,170 INFO L93 Difference]: Finished difference Result 72 states and 74 transitions. [2020-10-19 18:02:09,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-19 18:02:09,171 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 28 [2020-10-19 18:02:09,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:02:09,171 INFO L225 Difference]: With dead ends: 72 [2020-10-19 18:02:09,172 INFO L226 Difference]: Without dead ends: 72 [2020-10-19 18:02:09,172 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2020-10-19 18:02:09,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-19 18:02:09,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2020-10-19 18:02:09,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-19 18:02:09,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 72 transitions. [2020-10-19 18:02:09,178 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 72 transitions. Word has length 28 [2020-10-19 18:02:09,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:02:09,178 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 72 transitions. [2020-10-19 18:02:09,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-19 18:02:09,179 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 72 transitions. [2020-10-19 18:02:09,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-19 18:02:09,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:02:09,180 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:02:09,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 mathsat -unsat_core_generation=3 [2020-10-19 18:02:09,387 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr21ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr26ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr9ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION, appendErr10REQUIRES_VIOLATION, appendErr11REQUIRES_VIOLATION, appendErr12REQUIRES_VIOLATION, appendErr1REQUIRES_VIOLATION, appendErr8REQUIRES_VIOLATION, appendErr0REQUIRES_VIOLATION, appendErr9REQUIRES_VIOLATION, appendErr5REQUIRES_VIOLATION, appendErr3REQUIRES_VIOLATION, appendErr6REQUIRES_VIOLATION, appendErr2REQUIRES_VIOLATION, appendErr7REQUIRES_VIOLATION, appendErr13REQUIRES_VIOLATION, appendErr4REQUIRES_VIOLATION]=== [2020-10-19 18:02:09,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:02:09,388 INFO L82 PathProgramCache]: Analyzing trace with hash -25957238, now seen corresponding path program 1 times [2020-10-19 18:02:09,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:02:09,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1678139472] [2020-10-19 18:02:09,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 15 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with mathsat -unsat_core_generation=3 [2020-10-19 18:02:09,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:02:09,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 31 conjunts are in the unsatisfiable core [2020-10-19 18:02:09,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:02:09,636 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 18:02:09,636 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:02:09,653 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:02:09,658 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 18:02:09,658 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:02:09,669 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:02:09,670 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 18:02:09,671 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:33, output treesize:26 [2020-10-19 18:02:09,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:02:09,730 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2020-10-19 18:02:09,730 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:02:09,746 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:02:09,762 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:02:09,762 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 19 [2020-10-19 18:02:09,763 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:02:09,777 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:02:09,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1678139472] [2020-10-19 18:02:09,778 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-19 18:02:09,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2051600331] [2020-10-19 18:02:09,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 16 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-19 18:02:10,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:02:10,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 36 conjunts are in the unsatisfiable core [2020-10-19 18:02:10,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:02:10,144 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 18:02:10,144 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:02:10,155 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:02:10,159 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 18:02:10,160 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:02:10,171 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:02:10,171 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:02:10,171 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:22, output treesize:20 [2020-10-19 18:02:10,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:02:10,216 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2020-10-19 18:02:10,217 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:02:10,235 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:02:10,244 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:02:10,244 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-10-19 18:02:10,245 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:02:10,261 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:02:10,262 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-19 18:02:10,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852492675] [2020-10-19 18:02:10,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:02:10,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:02:10,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 31 conjunts are in the unsatisfiable core [2020-10-19 18:02:10,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:02:10,394 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 18:02:10,395 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:02:10,409 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:02:10,415 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 18:02:10,415 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:02:10,425 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:02:10,426 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 18:02:10,427 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:33, output treesize:26 [2020-10-19 18:02:10,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:02:10,447 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2020-10-19 18:02:10,447 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:02:10,462 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:02:10,473 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:02:10,473 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 19 [2020-10-19 18:02:10,474 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:02:10,488 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:02:10,489 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-19 18:02:10,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:02:10,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-19 18:02:10,489 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-10-19 18:02:10,489 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 18:02:11,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 mathsat -unsat_core_generation=3,16 cvc4 --incremental --print-success --lang smt --rewrite-divk,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:02:11,108 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-19 18:02:11,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:02:11 BoogieIcfgContainer [2020-10-19 18:02:11,108 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:02:11,109 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:02:11,109 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:02:11,109 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:02:11,110 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:01:54" (3/4) ... [2020-10-19 18:02:11,112 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 18:02:11,112 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:02:11,113 INFO L168 Benchmark]: Toolchain (without parser) took 18348.74 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 316.1 MB). Free memory was 954.6 MB in the beginning and 1.2 GB in the end (delta: -201.1 MB). Peak memory consumption was 115.1 MB. Max. memory is 11.5 GB. [2020-10-19 18:02:11,114 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 18:02:11,114 INFO L168 Benchmark]: CACSL2BoogieTranslator took 736.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 954.6 MB in the beginning and 1.1 GB in the end (delta: -161.1 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2020-10-19 18:02:11,114 INFO L168 Benchmark]: Boogie Preprocessor took 85.35 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 18:02:11,115 INFO L168 Benchmark]: RCFGBuilder took 861.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 64.8 MB). Peak memory consumption was 64.8 MB. Max. memory is 11.5 GB. [2020-10-19 18:02:11,115 INFO L168 Benchmark]: TraceAbstraction took 16650.32 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 175.1 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -104.7 MB). Peak memory consumption was 70.4 MB. Max. memory is 11.5 GB. [2020-10-19 18:02:11,115 INFO L168 Benchmark]: Witness Printer took 3.60 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 18:02:11,117 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 736.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 954.6 MB in the beginning and 1.1 GB in the end (delta: -161.1 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 85.35 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 861.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 64.8 MB). Peak memory consumption was 64.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 16650.32 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 175.1 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -104.7 MB). Peak memory consumption was 70.4 MB. Max. memory is 11.5 GB. * Witness Printer took 3.60 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.plugins.generator.traceabstraction: - UnprovableResult [Line: 533]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L539] struct item *list = ((void *)0); [L541] CALL append(&list) [L530] struct item *item = malloc(sizeof *item); [L531] EXPR \read(**plist) [L531] item->next = *plist [L532] EXPR item->next [L532-L534] EXPR (item->next) ? item->next->data : malloc(sizeof *item) [L532-L534] EXPR (item->next) ? item->next->data : malloc(sizeof *item) [L532-L534] item->data = (item->next) ? item->next->data : malloc(sizeof *item) [L535] *plist = item [L541] RET append(&list) [L542] COND TRUE __VERIFIER_nondet_int() [L541] CALL append(&list) [L530] struct item *item = malloc(sizeof *item); [L531] EXPR \read(**plist) [L531] item->next = *plist [L532] EXPR item->next [L532-L534] (item->next) ? item->next->data : malloc(sizeof *item) [L533] EXPR item->next [L533] item->next->data - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 114 locations, 42 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 16.5s, OverallIterations: 12, TraceHistogramMax: 2, AutomataDifference: 6.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 563 SDtfs, 530 SDslu, 1426 SDs, 0 SdLazy, 1456 SolverSat, 79 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 400 GetRequests, 308 SyntacticMatches, 5 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=88occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 46 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 186 NumberOfCodeBlocks, 186 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 350 ConstructedInterpolants, 24 QuantifiedInterpolants, 53147 SizeOfPredicates, 99 NumberOfNonLiveVariables, 1269 ConjunctsInSsa, 105 ConjunctsInUnsatCore, 22 InterpolantComputations, 20 PerfectInterpolantSequences, 4/14 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...