./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-ext-properties/list-ext.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/list-ext-properties/list-ext.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 0539ac658883b1641a4574e23a99ec21471d0b6a .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/list-ext-properties/list-ext.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 0539ac658883b1641a4574e23a99ec21471d0b6a ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 18:05:15,279 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:05:15,283 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:05:15,325 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:05:15,325 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:05:15,339 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:05:15,342 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:05:15,344 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:05:15,348 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:05:15,350 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:05:15,353 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:05:15,355 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:05:15,356 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:05:15,360 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:05:15,362 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:05:15,365 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:05:15,366 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:05:15,367 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:05:15,369 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:05:15,371 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:05:15,372 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:05:15,373 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:05:15,375 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:05:15,376 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:05:15,379 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:05:15,379 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:05:15,380 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:05:15,381 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:05:15,382 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:05:15,383 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:05:15,383 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:05:15,384 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:05:15,385 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:05:15,386 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:05:15,387 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:05:15,387 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:05:15,388 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:05:15,388 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:05:15,389 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:05:15,390 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:05:15,391 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:05:15,391 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-19 18:05:15,414 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:05:15,415 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:05:15,416 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:05:15,417 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:05:15,417 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:05:15,417 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:05:15,418 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:05:15,418 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:05:15,418 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:05:15,418 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:05:15,419 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:05:15,419 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 18:05:15,419 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 18:05:15,419 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-19 18:05:15,420 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:05:15,420 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 18:05:15,420 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:05:15,421 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:05:15,421 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:05:15,421 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:05:15,421 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:05:15,422 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:05:15,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:05:15,422 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:05:15,423 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:05:15,423 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:05:15,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 18:05:15,423 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:05:15,424 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 -> 0539ac658883b1641a4574e23a99ec21471d0b6a [2020-10-19 18:05:15,780 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:05:15,803 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:05:15,808 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:05:15,810 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:05:15,811 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:05:15,813 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext-properties/list-ext.i [2020-10-19 18:05:15,880 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/608dddd74/ca5746766854480e8f0d00be96efa967/FLAGcf5dea930 [2020-10-19 18:05:16,435 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:05:16,436 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext-properties/list-ext.i [2020-10-19 18:05:16,450 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/608dddd74/ca5746766854480e8f0d00be96efa967/FLAGcf5dea930 [2020-10-19 18:05:16,781 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/608dddd74/ca5746766854480e8f0d00be96efa967 [2020-10-19 18:05:16,785 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:05:16,791 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 18:05:16,793 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:05:16,793 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:05:16,797 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:05:16,798 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:05:16" (1/1) ... [2020-10-19 18:05:16,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69ffdbce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:05:16, skipping insertion in model container [2020-10-19 18:05:16,802 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:05:16" (1/1) ... [2020-10-19 18:05:16,811 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:05:16,862 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:05:17,354 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:05:17,365 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:05:17,409 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:05:17,498 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:05:17,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:05:17 WrapperNode [2020-10-19 18:05:17,499 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:05:17,500 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:05:17,501 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:05:17,501 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:05:17,516 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:05:17" (1/1) ... [2020-10-19 18:05:17,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:05:17" (1/1) ... [2020-10-19 18:05:17,532 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:05:17" (1/1) ... [2020-10-19 18:05:17,533 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:05:17" (1/1) ... [2020-10-19 18:05:17,561 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:05:17" (1/1) ... [2020-10-19 18:05:17,574 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:05:17" (1/1) ... [2020-10-19 18:05:17,580 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:05:17" (1/1) ... [2020-10-19 18:05:17,588 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:05:17,589 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:05:17,589 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:05:17,589 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:05:17,590 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:05:17" (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 18:05:17,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 18:05:17,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:05:17,656 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-19 18:05:17,656 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-19 18:05:17,656 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-19 18:05:17,657 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-19 18:05:17,657 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-19 18:05:17,657 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-19 18:05:17,657 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-19 18:05:17,657 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 18:05:17,658 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-19 18:05:17,658 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-19 18:05:17,658 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-19 18:05:17,658 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-19 18:05:17,658 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-19 18:05:17,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 18:05:17,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-19 18:05:17,659 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-19 18:05:17,659 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-19 18:05:17,659 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-19 18:05:17,661 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-19 18:05:17,662 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-19 18:05:17,662 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-19 18:05:17,662 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-19 18:05:17,662 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-19 18:05:17,663 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-19 18:05:17,663 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-19 18:05:17,663 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-19 18:05:17,663 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-19 18:05:17,664 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-19 18:05:17,664 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-19 18:05:17,664 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-19 18:05:17,664 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-19 18:05:17,665 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-19 18:05:17,665 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-19 18:05:17,665 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-19 18:05:17,665 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-19 18:05:17,666 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-19 18:05:17,666 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-19 18:05:17,666 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-19 18:05:17,666 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-19 18:05:17,667 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-19 18:05:17,667 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-19 18:05:17,667 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-19 18:05:17,667 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-19 18:05:17,668 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-19 18:05:17,668 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-19 18:05:17,668 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-19 18:05:17,668 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-19 18:05:17,668 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-19 18:05:17,669 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-19 18:05:17,669 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-19 18:05:17,669 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-19 18:05:17,669 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-19 18:05:17,670 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-19 18:05:17,670 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-19 18:05:17,670 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-19 18:05:17,670 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-19 18:05:17,670 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-19 18:05:17,671 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-19 18:05:17,671 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-19 18:05:17,671 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-19 18:05:17,671 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-19 18:05:17,672 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-19 18:05:17,672 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-19 18:05:17,672 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-19 18:05:17,672 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-19 18:05:17,673 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-19 18:05:17,673 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-19 18:05:17,673 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-19 18:05:17,673 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-19 18:05:17,674 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-19 18:05:17,674 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-19 18:05:17,674 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-19 18:05:17,674 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-19 18:05:17,674 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-19 18:05:17,675 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-19 18:05:17,675 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-19 18:05:17,675 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-19 18:05:17,675 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-19 18:05:17,675 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-19 18:05:17,676 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-19 18:05:17,676 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-19 18:05:17,676 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-19 18:05:17,676 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-19 18:05:17,676 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-19 18:05:17,677 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-19 18:05:17,677 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-19 18:05:17,677 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-19 18:05:17,677 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-19 18:05:17,678 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-19 18:05:17,678 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-19 18:05:17,678 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-19 18:05:17,678 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-19 18:05:17,678 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-19 18:05:17,679 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-19 18:05:17,679 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-19 18:05:17,679 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-19 18:05:17,679 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-19 18:05:17,679 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-19 18:05:17,680 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-19 18:05:17,680 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-19 18:05:17,680 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-19 18:05:17,680 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-19 18:05:17,681 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-19 18:05:17,681 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-19 18:05:17,681 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-19 18:05:17,681 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-19 18:05:17,681 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-19 18:05:17,682 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-19 18:05:17,682 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-19 18:05:17,682 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-19 18:05:17,682 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-19 18:05:17,682 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-19 18:05:17,683 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-19 18:05:17,683 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-19 18:05:17,683 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-19 18:05:17,683 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-19 18:05:17,684 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-19 18:05:17,684 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-19 18:05:17,684 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-19 18:05:17,684 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-19 18:05:17,684 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-19 18:05:17,685 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-19 18:05:17,685 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 18:05:17,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 18:05:17,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 18:05:17,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-19 18:05:17,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-19 18:05:17,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 18:05:17,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 18:05:17,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 18:05:17,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 18:05:17,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:05:18,116 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-19 18:05:18,403 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:05:18,403 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-19 18:05:18,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:05:18 BoogieIcfgContainer [2020-10-19 18:05:18,406 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:05:18,407 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:05:18,407 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:05:18,411 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:05:18,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:05:16" (1/3) ... [2020-10-19 18:05:18,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19dd2f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:05:18, skipping insertion in model container [2020-10-19 18:05:18,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:05:17" (2/3) ... [2020-10-19 18:05:18,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19dd2f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:05:18, skipping insertion in model container [2020-10-19 18:05:18,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:05:18" (3/3) ... [2020-10-19 18:05:18,415 INFO L111 eAbstractionObserver]: Analyzing ICFG list-ext.i [2020-10-19 18:05:18,427 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:05:18,436 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 38 error locations. [2020-10-19 18:05:18,452 INFO L253 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2020-10-19 18:05:18,474 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:05:18,475 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 18:05:18,475 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:05:18,475 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:05:18,475 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:05:18,475 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:05:18,475 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:05:18,476 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:05:18,497 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states. [2020-10-19 18:05:18,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-19 18:05:18,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:05:18,509 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:05:18,510 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:05:18,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:05:18,517 INFO L82 PathProgramCache]: Analyzing trace with hash -849411233, now seen corresponding path program 1 times [2020-10-19 18:05:18,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:05:18,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981895442] [2020-10-19 18:05:18,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:05:18,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:18,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:05:18,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:18,771 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 18:05:18,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981895442] [2020-10-19 18:05:18,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:05:18,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:05:18,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009766353] [2020-10-19 18:05:18,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 18:05:18,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:05:18,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 18:05:18,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 18:05:18,802 INFO L87 Difference]: Start difference. First operand 103 states. Second operand 3 states. [2020-10-19 18:05:19,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:05:19,044 INFO L93 Difference]: Finished difference Result 100 states and 109 transitions. [2020-10-19 18:05:19,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 18:05:19,046 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-19 18:05:19,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:05:19,057 INFO L225 Difference]: With dead ends: 100 [2020-10-19 18:05:19,057 INFO L226 Difference]: Without dead ends: 92 [2020-10-19 18:05:19,060 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 18:05:19,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-19 18:05:19,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-10-19 18:05:19,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-19 18:05:19,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 98 transitions. [2020-10-19 18:05:19,111 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 98 transitions. Word has length 11 [2020-10-19 18:05:19,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:05:19,112 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 98 transitions. [2020-10-19 18:05:19,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 18:05:19,113 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 98 transitions. [2020-10-19 18:05:19,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-19 18:05:19,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:05:19,114 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:05:19,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 18:05:19,115 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:05:19,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:05:19,116 INFO L82 PathProgramCache]: Analyzing trace with hash -562931253, now seen corresponding path program 1 times [2020-10-19 18:05:19,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:05:19,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422090648] [2020-10-19 18:05:19,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:05:19,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:19,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:05:19,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:19,240 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 18:05:19,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422090648] [2020-10-19 18:05:19,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:05:19,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:05:19,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502361021] [2020-10-19 18:05:19,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:05:19,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:05:19,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:05:19,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:05:19,248 INFO L87 Difference]: Start difference. First operand 92 states and 98 transitions. Second operand 5 states. [2020-10-19 18:05:19,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:05:19,531 INFO L93 Difference]: Finished difference Result 113 states and 124 transitions. [2020-10-19 18:05:19,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:05:19,532 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-19 18:05:19,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:05:19,534 INFO L225 Difference]: With dead ends: 113 [2020-10-19 18:05:19,534 INFO L226 Difference]: Without dead ends: 113 [2020-10-19 18:05:19,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:05:19,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-19 18:05:19,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 93. [2020-10-19 18:05:19,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-19 18:05:19,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 109 transitions. [2020-10-19 18:05:19,548 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 109 transitions. Word has length 12 [2020-10-19 18:05:19,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:05:19,549 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 109 transitions. [2020-10-19 18:05:19,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:05:19,550 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 109 transitions. [2020-10-19 18:05:19,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-19 18:05:19,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:05:19,551 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:05:19,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 18:05:19,551 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:05:19,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:05:19,552 INFO L82 PathProgramCache]: Analyzing trace with hash -562931252, now seen corresponding path program 1 times [2020-10-19 18:05:19,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:05:19,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711566415] [2020-10-19 18:05:19,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:05:19,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:19,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:05:19,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:19,663 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 18:05:19,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711566415] [2020-10-19 18:05:19,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:05:19,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:05:19,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442112887] [2020-10-19 18:05:19,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:05:19,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:05:19,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:05:19,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:05:19,667 INFO L87 Difference]: Start difference. First operand 93 states and 109 transitions. Second operand 5 states. [2020-10-19 18:05:20,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:05:20,012 INFO L93 Difference]: Finished difference Result 129 states and 143 transitions. [2020-10-19 18:05:20,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:05:20,012 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-19 18:05:20,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:05:20,016 INFO L225 Difference]: With dead ends: 129 [2020-10-19 18:05:20,016 INFO L226 Difference]: Without dead ends: 129 [2020-10-19 18:05:20,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:05:20,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-19 18:05:20,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 113. [2020-10-19 18:05:20,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-19 18:05:20,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 127 transitions. [2020-10-19 18:05:20,030 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 127 transitions. Word has length 12 [2020-10-19 18:05:20,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:05:20,030 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 127 transitions. [2020-10-19 18:05:20,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:05:20,031 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 127 transitions. [2020-10-19 18:05:20,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-19 18:05:20,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:05:20,032 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:05:20,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 18:05:20,033 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:05:20,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:05:20,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1567887182, now seen corresponding path program 1 times [2020-10-19 18:05:20,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:05:20,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586645901] [2020-10-19 18:05:20,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:05:20,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:20,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:05:20,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:20,155 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:05:20,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586645901] [2020-10-19 18:05:20,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:05:20,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 18:05:20,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316862596] [2020-10-19 18:05:20,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:05:20,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:05:20,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:05:20,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:05:20,159 INFO L87 Difference]: Start difference. First operand 113 states and 127 transitions. Second operand 7 states. [2020-10-19 18:05:20,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:05:20,643 INFO L93 Difference]: Finished difference Result 157 states and 178 transitions. [2020-10-19 18:05:20,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:05:20,644 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-10-19 18:05:20,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:05:20,646 INFO L225 Difference]: With dead ends: 157 [2020-10-19 18:05:20,647 INFO L226 Difference]: Without dead ends: 157 [2020-10-19 18:05:20,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:05:20,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-19 18:05:20,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 117. [2020-10-19 18:05:20,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-19 18:05:20,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 135 transitions. [2020-10-19 18:05:20,657 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 135 transitions. Word has length 21 [2020-10-19 18:05:20,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:05:20,658 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 135 transitions. [2020-10-19 18:05:20,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:05:20,658 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 135 transitions. [2020-10-19 18:05:20,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-19 18:05:20,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:05:20,659 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:05:20,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 18:05:20,660 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:05:20,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:05:20,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1567887181, now seen corresponding path program 1 times [2020-10-19 18:05:20,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:05:20,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567742240] [2020-10-19 18:05:20,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:05:20,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:20,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:05:20,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:20,803 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:05:20,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567742240] [2020-10-19 18:05:20,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:05:20,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 18:05:20,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775490339] [2020-10-19 18:05:20,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:05:20,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:05:20,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:05:20,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:05:20,805 INFO L87 Difference]: Start difference. First operand 117 states and 135 transitions. Second operand 7 states. [2020-10-19 18:05:21,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:05:21,409 INFO L93 Difference]: Finished difference Result 160 states and 182 transitions. [2020-10-19 18:05:21,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 18:05:21,410 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-10-19 18:05:21,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:05:21,411 INFO L225 Difference]: With dead ends: 160 [2020-10-19 18:05:21,412 INFO L226 Difference]: Without dead ends: 160 [2020-10-19 18:05:21,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:05:21,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-19 18:05:21,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 101. [2020-10-19 18:05:21,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-19 18:05:21,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 113 transitions. [2020-10-19 18:05:21,433 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 113 transitions. Word has length 21 [2020-10-19 18:05:21,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:05:21,433 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 113 transitions. [2020-10-19 18:05:21,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:05:21,433 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 113 transitions. [2020-10-19 18:05:21,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-19 18:05:21,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:05:21,435 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:05:21,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-19 18:05:21,436 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:05:21,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:05:21,436 INFO L82 PathProgramCache]: Analyzing trace with hash -517016407, now seen corresponding path program 1 times [2020-10-19 18:05:21,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:05:21,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693778638] [2020-10-19 18:05:21,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:05:21,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:21,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:05:21,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:21,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:05:21,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693778638] [2020-10-19 18:05:21,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:05:21,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-19 18:05:21,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448256130] [2020-10-19 18:05:21,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 18:05:21,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:05:21,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 18:05:21,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:05:21,615 INFO L87 Difference]: Start difference. First operand 101 states and 113 transitions. Second operand 8 states. [2020-10-19 18:05:21,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:05:21,951 INFO L93 Difference]: Finished difference Result 190 states and 210 transitions. [2020-10-19 18:05:21,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:05:21,952 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-10-19 18:05:21,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:05:21,954 INFO L225 Difference]: With dead ends: 190 [2020-10-19 18:05:21,954 INFO L226 Difference]: Without dead ends: 190 [2020-10-19 18:05:21,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:05:21,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-19 18:05:21,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 112. [2020-10-19 18:05:21,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-19 18:05:21,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 128 transitions. [2020-10-19 18:05:21,971 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 128 transitions. Word has length 22 [2020-10-19 18:05:21,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:05:21,972 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 128 transitions. [2020-10-19 18:05:21,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 18:05:21,972 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 128 transitions. [2020-10-19 18:05:21,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-19 18:05:21,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:05:21,974 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 18:05:21,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-19 18:05:21,975 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:05:21,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:05:21,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1315861814, now seen corresponding path program 1 times [2020-10-19 18:05:21,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:05:21,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78669516] [2020-10-19 18:05:21,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:05:21,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:22,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:05:22,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:22,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:05:22,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78669516] [2020-10-19 18:05:22,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:05:22,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-19 18:05:22,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956906638] [2020-10-19 18:05:22,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 18:05:22,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:05:22,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 18:05:22,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:05:22,066 INFO L87 Difference]: Start difference. First operand 112 states and 128 transitions. Second operand 8 states. [2020-10-19 18:05:22,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:05:22,399 INFO L93 Difference]: Finished difference Result 176 states and 193 transitions. [2020-10-19 18:05:22,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:05:22,399 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-10-19 18:05:22,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:05:22,401 INFO L225 Difference]: With dead ends: 176 [2020-10-19 18:05:22,401 INFO L226 Difference]: Without dead ends: 176 [2020-10-19 18:05:22,401 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:05:22,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-19 18:05:22,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 114. [2020-10-19 18:05:22,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-19 18:05:22,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 130 transitions. [2020-10-19 18:05:22,409 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 130 transitions. Word has length 24 [2020-10-19 18:05:22,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:05:22,409 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 130 transitions. [2020-10-19 18:05:22,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 18:05:22,409 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 130 transitions. [2020-10-19 18:05:22,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-19 18:05:22,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:05:22,410 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:05:22,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-19 18:05:22,411 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:05:22,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:05:22,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1990956336, now seen corresponding path program 1 times [2020-10-19 18:05:22,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:05:22,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293764548] [2020-10-19 18:05:22,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:05:22,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:22,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:05:22,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:22,486 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:05:22,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293764548] [2020-10-19 18:05:22,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:05:22,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 18:05:22,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134923584] [2020-10-19 18:05:22,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:05:22,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:05:22,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:05:22,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:05:22,489 INFO L87 Difference]: Start difference. First operand 114 states and 130 transitions. Second operand 7 states. [2020-10-19 18:05:22,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:05:22,861 INFO L93 Difference]: Finished difference Result 129 states and 146 transitions. [2020-10-19 18:05:22,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:05:22,861 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-10-19 18:05:22,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:05:22,863 INFO L225 Difference]: With dead ends: 129 [2020-10-19 18:05:22,863 INFO L226 Difference]: Without dead ends: 129 [2020-10-19 18:05:22,865 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:05:22,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-19 18:05:22,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 112. [2020-10-19 18:05:22,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-19 18:05:22,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 128 transitions. [2020-10-19 18:05:22,878 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 128 transitions. Word has length 24 [2020-10-19 18:05:22,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:05:22,879 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 128 transitions. [2020-10-19 18:05:22,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:05:22,881 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 128 transitions. [2020-10-19 18:05:22,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-19 18:05:22,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:05:22,882 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:05:22,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-19 18:05:22,883 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:05:22,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:05:22,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1990956337, now seen corresponding path program 1 times [2020-10-19 18:05:22,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:05:22,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436515146] [2020-10-19 18:05:22,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:05:22,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:22,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:05:22,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:22,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:05:23,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436515146] [2020-10-19 18:05:23,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:05:23,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 18:05:23,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412230997] [2020-10-19 18:05:23,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:05:23,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:05:23,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:05:23,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:05:23,002 INFO L87 Difference]: Start difference. First operand 112 states and 128 transitions. Second operand 7 states. [2020-10-19 18:05:23,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:05:23,455 INFO L93 Difference]: Finished difference Result 127 states and 144 transitions. [2020-10-19 18:05:23,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 18:05:23,455 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-10-19 18:05:23,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:05:23,457 INFO L225 Difference]: With dead ends: 127 [2020-10-19 18:05:23,457 INFO L226 Difference]: Without dead ends: 127 [2020-10-19 18:05:23,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:05:23,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-19 18:05:23,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 97. [2020-10-19 18:05:23,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-19 18:05:23,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 111 transitions. [2020-10-19 18:05:23,464 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 111 transitions. Word has length 24 [2020-10-19 18:05:23,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:05:23,464 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 111 transitions. [2020-10-19 18:05:23,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:05:23,465 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 111 transitions. [2020-10-19 18:05:23,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-19 18:05:23,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:05:23,466 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 18:05:23,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-19 18:05:23,467 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:05:23,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:05:23,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1772362976, now seen corresponding path program 1 times [2020-10-19 18:05:23,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:05:23,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670496456] [2020-10-19 18:05:23,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:05:23,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:05:23,486 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:05:23,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:05:23,509 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:05:23,579 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:05:23,579 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 18:05:23,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-19 18:05:23,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:05:23 BoogieIcfgContainer [2020-10-19 18:05:23,650 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:05:23,650 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:05:23,650 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:05:23,651 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:05:23,652 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:05:18" (3/4) ... [2020-10-19 18:05:23,657 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 18:05:23,658 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:05:23,661 INFO L168 Benchmark]: Toolchain (without parser) took 6873.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 209.2 MB). Free memory was 958.6 MB in the beginning and 842.1 MB in the end (delta: 116.5 MB). Peak memory consumption was 325.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:05:23,663 INFO L168 Benchmark]: CDTParser took 0.45 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 18:05:23,665 INFO L168 Benchmark]: CACSL2BoogieTranslator took 707.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 953.2 MB in the beginning and 1.1 GB in the end (delta: -157.5 MB). Peak memory consumption was 26.2 MB. Max. memory is 11.5 GB. [2020-10-19 18:05:23,666 INFO L168 Benchmark]: Boogie Preprocessor took 87.89 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 18:05:23,672 INFO L168 Benchmark]: RCFGBuilder took 816.85 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 63.9 MB). Peak memory consumption was 63.9 MB. Max. memory is 11.5 GB. [2020-10-19 18:05:23,673 INFO L168 Benchmark]: TraceAbstraction took 5242.95 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 72.9 MB). Free memory was 1.0 GB in the beginning and 850.0 MB in the end (delta: 196.8 MB). Peak memory consumption was 269.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:05:23,675 INFO L168 Benchmark]: Witness Printer took 7.58 ms. Allocated memory is still 1.2 GB. Free memory was 850.0 MB in the beginning and 842.1 MB in the end (delta: 7.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 11.5 GB. [2020-10-19 18:05:23,686 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 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 707.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 953.2 MB in the beginning and 1.1 GB in the end (delta: -157.5 MB). Peak memory consumption was 26.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 87.89 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 816.85 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 63.9 MB). Peak memory consumption was 63.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5242.95 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 72.9 MB). Free memory was 1.0 GB in the beginning and 850.0 MB in the end (delta: 196.8 MB). Peak memory consumption was 269.7 MB. Max. memory is 11.5 GB. * Witness Printer took 7.58 ms. Allocated memory is still 1.2 GB. Free memory was 850.0 MB in the beginning and 842.1 MB in the end (delta: 7.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 12. Possible FailurePath: [L532] int i = 0; [L533] int y = 0; [L534] List a = (List) malloc(sizeof(struct node)); VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, y=0] [L535] COND FALSE !(a == 0) VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, y=0] [L536] List t; [L537] List p = a; VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0] [L538] i < 10 && __VERIFIER_nondet_int() [L538] i < 10 && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, a={-1:0}, i=0, i < 10 && __VERIFIER_nondet_int()=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0] [L538] COND FALSE !(i < 10 && __VERIFIER_nondet_int()) [L546] y < 10 && __VERIFIER_nondet_int() [L546] y < 10 && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0, y < 10 && __VERIFIER_nondet_int()=0] [L546] COND FALSE !(y < 10 && __VERIFIER_nondet_int()) [L554] p->h = 3 VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0] [L555] p->n = 0 VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0] [L556] i = 0 [L557] y = 0 [L558] p = a VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0] [L559] EXPR p->h VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3, y=0] [L559] COND FALSE !(p->h == 1) [L563] EXPR p->h VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3, y=0] [L563] COND FALSE !(p->h == 2) [L567] EXPR p->h VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3, y=0] [L567] COND TRUE p->h != 3 || (i + y) < 20 [L568] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "list-ext.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 119 locations, 38 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.1s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 637 SDtfs, 920 SDslu, 1186 SDs, 0 SdLazy, 2627 SolverSat, 168 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 84 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=117occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 322 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 197 NumberOfCodeBlocks, 197 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 162 ConstructedInterpolants, 0 QuantifiedInterpolants, 16064 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 16/16 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-906a4fb [2020-10-19 18:05:25,745 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:05:25,748 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:05:25,774 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:05:25,774 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:05:25,776 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:05:25,777 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:05:25,780 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:05:25,782 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:05:25,783 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:05:25,784 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:05:25,786 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:05:25,786 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:05:25,788 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:05:25,789 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:05:25,791 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:05:25,795 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:05:25,796 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:05:25,801 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:05:25,806 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:05:25,808 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:05:25,811 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:05:25,816 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:05:25,820 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:05:25,825 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:05:25,827 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:05:25,827 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:05:25,829 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:05:25,832 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:05:25,833 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:05:25,833 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:05:25,834 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:05:25,836 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:05:25,837 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:05:25,838 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:05:25,839 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:05:25,840 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:05:25,840 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:05:25,840 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:05:25,841 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:05:25,843 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:05:25,844 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2020-10-19 18:05:25,898 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:05:25,899 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:05:25,902 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:05:25,902 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:05:25,902 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:05:25,903 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:05:25,903 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:05:25,903 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:05:25,903 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:05:25,904 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:05:25,904 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:05:25,906 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 18:05:25,906 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 18:05:25,907 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-19 18:05:25,907 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:05:25,907 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 18:05:25,908 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-19 18:05:25,908 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-19 18:05:25,908 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:05:25,908 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:05:25,909 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:05:25,909 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:05:25,909 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:05:25,910 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:05:25,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:05:25,910 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:05:25,911 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:05:25,911 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-19 18:05:25,912 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-19 18:05:25,912 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:05:25,912 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-19 18:05:25,913 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 -> 0539ac658883b1641a4574e23a99ec21471d0b6a [2020-10-19 18:05:26,232 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:05:26,247 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:05:26,250 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:05:26,252 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:05:26,253 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:05:26,254 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext-properties/list-ext.i [2020-10-19 18:05:26,310 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a70891e79/f2b7e3fb259e466baab803bc5a0c9fe9/FLAGe84683850 [2020-10-19 18:05:26,770 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:05:26,770 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext-properties/list-ext.i [2020-10-19 18:05:26,783 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a70891e79/f2b7e3fb259e466baab803bc5a0c9fe9/FLAGe84683850 [2020-10-19 18:05:27,136 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a70891e79/f2b7e3fb259e466baab803bc5a0c9fe9 [2020-10-19 18:05:27,139 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:05:27,144 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 18:05:27,145 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:05:27,145 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:05:27,149 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:05:27,150 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:05:27" (1/1) ... [2020-10-19 18:05:27,153 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25048ded and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:05:27, skipping insertion in model container [2020-10-19 18:05:27,153 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:05:27" (1/1) ... [2020-10-19 18:05:27,161 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:05:27,203 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:05:27,643 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:05:27,669 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:05:27,746 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:05:27,818 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:05:27,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:05:27 WrapperNode [2020-10-19 18:05:27,819 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:05:27,820 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:05:27,820 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:05:27,822 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:05:27,836 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:05:27" (1/1) ... [2020-10-19 18:05:27,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:05:27" (1/1) ... [2020-10-19 18:05:27,863 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:05:27" (1/1) ... [2020-10-19 18:05:27,863 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:05:27" (1/1) ... [2020-10-19 18:05:27,889 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:05:27" (1/1) ... [2020-10-19 18:05:27,896 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:05:27" (1/1) ... [2020-10-19 18:05:27,901 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:05:27" (1/1) ... [2020-10-19 18:05:27,909 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:05:27,910 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:05:27,910 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:05:27,910 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:05:27,911 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:05:27" (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 18:05:27,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 18:05:27,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:05:27,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2020-10-19 18:05:27,980 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-19 18:05:27,980 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-19 18:05:27,980 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-19 18:05:27,981 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-19 18:05:27,981 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-19 18:05:27,981 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-19 18:05:27,981 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-19 18:05:27,981 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 18:05:27,981 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-19 18:05:27,981 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-19 18:05:27,982 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-19 18:05:27,982 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-19 18:05:27,982 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-19 18:05:27,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 18:05:27,982 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-19 18:05:27,982 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-19 18:05:27,983 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-19 18:05:27,983 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-19 18:05:27,983 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-19 18:05:27,983 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-19 18:05:27,983 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-19 18:05:27,983 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-19 18:05:27,983 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-19 18:05:27,984 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-19 18:05:27,984 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-19 18:05:27,984 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-19 18:05:27,984 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-19 18:05:27,984 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-19 18:05:27,984 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-19 18:05:27,985 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-19 18:05:27,985 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-19 18:05:27,985 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-19 18:05:27,985 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-19 18:05:27,985 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-19 18:05:27,985 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-19 18:05:27,985 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-19 18:05:27,986 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-19 18:05:27,986 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-19 18:05:27,986 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-19 18:05:27,986 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-19 18:05:27,986 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-19 18:05:27,986 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-19 18:05:27,986 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-19 18:05:27,987 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-19 18:05:27,987 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-19 18:05:27,987 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-19 18:05:27,987 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-19 18:05:27,987 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-19 18:05:27,987 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-19 18:05:27,987 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-19 18:05:27,987 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-19 18:05:27,988 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-19 18:05:27,988 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-19 18:05:27,988 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-19 18:05:27,988 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-19 18:05:27,988 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-19 18:05:27,988 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-19 18:05:27,988 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-19 18:05:27,989 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-19 18:05:27,989 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-19 18:05:27,989 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-19 18:05:27,989 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-19 18:05:27,989 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-19 18:05:27,989 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-19 18:05:27,989 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-19 18:05:27,990 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-19 18:05:27,990 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-19 18:05:27,990 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-19 18:05:27,990 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-19 18:05:27,990 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-19 18:05:27,990 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-19 18:05:27,990 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-19 18:05:27,991 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-19 18:05:27,991 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-19 18:05:27,991 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-19 18:05:27,991 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-19 18:05:27,991 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-19 18:05:27,991 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-19 18:05:27,991 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-19 18:05:27,992 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-19 18:05:27,992 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-19 18:05:27,992 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-19 18:05:27,992 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-19 18:05:27,992 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-19 18:05:27,992 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-19 18:05:27,992 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-19 18:05:27,993 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-19 18:05:27,993 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-19 18:05:27,993 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-19 18:05:27,993 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-19 18:05:27,993 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-19 18:05:27,993 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-19 18:05:27,993 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-19 18:05:27,993 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-19 18:05:27,994 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-19 18:05:27,994 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-19 18:05:27,994 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-19 18:05:27,994 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-19 18:05:27,994 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-19 18:05:27,994 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-19 18:05:27,994 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-19 18:05:27,995 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-19 18:05:27,995 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-19 18:05:27,995 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-19 18:05:27,995 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-19 18:05:27,995 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-19 18:05:27,995 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-19 18:05:27,995 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-19 18:05:27,996 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-19 18:05:27,996 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-19 18:05:27,996 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-19 18:05:27,996 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-19 18:05:27,996 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-19 18:05:27,996 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-19 18:05:27,996 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-19 18:05:27,996 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-19 18:05:27,997 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-19 18:05:27,997 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-19 18:05:27,997 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-19 18:05:27,997 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-19 18:05:27,997 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-19 18:05:27,997 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-19 18:05:27,997 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 18:05:27,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 18:05:27,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-19 18:05:27,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-19 18:05:27,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-19 18:05:27,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-19 18:05:27,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 18:05:27,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 18:05:27,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-19 18:05:27,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:05:27,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2020-10-19 18:05:27,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2020-10-19 18:05:27,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2020-10-19 18:05:28,380 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-19 18:05:28,874 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:05:28,874 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-19 18:05:28,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:05:28 BoogieIcfgContainer [2020-10-19 18:05:28,885 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:05:28,887 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:05:28,887 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:05:28,893 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:05:28,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:05:27" (1/3) ... [2020-10-19 18:05:28,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c816cec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:05:28, skipping insertion in model container [2020-10-19 18:05:28,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:05:27" (2/3) ... [2020-10-19 18:05:28,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c816cec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:05:28, skipping insertion in model container [2020-10-19 18:05:28,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:05:28" (3/3) ... [2020-10-19 18:05:28,899 INFO L111 eAbstractionObserver]: Analyzing ICFG list-ext.i [2020-10-19 18:05:28,913 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:05:28,925 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 38 error locations. [2020-10-19 18:05:28,942 INFO L253 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2020-10-19 18:05:28,970 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:05:28,970 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 18:05:28,971 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:05:28,971 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:05:28,971 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:05:28,972 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:05:28,972 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:05:28,972 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:05:28,999 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states. [2020-10-19 18:05:29,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-19 18:05:29,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:05:29,017 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:05:29,018 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:05:29,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:05:29,027 INFO L82 PathProgramCache]: Analyzing trace with hash -243684713, now seen corresponding path program 1 times [2020-10-19 18:05:29,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:05:29,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [999314579] [2020-10-19 18:05:29,045 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 18:05:29,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:29,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 18:05:29,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:05:29,316 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 18:05:29,317 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:05:29,333 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:05:29,334 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:05:29,334 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-19 18:05:29,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:05:29,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:05:29,468 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 18:05:29,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [999314579] [2020-10-19 18:05:29,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:05:29,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-10-19 18:05:29,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550111548] [2020-10-19 18:05:29,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:05:29,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:05:29,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:05:29,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:05:29,496 INFO L87 Difference]: Start difference. First operand 99 states. Second operand 6 states. [2020-10-19 18:05:30,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:05:30,420 INFO L93 Difference]: Finished difference Result 160 states and 175 transitions. [2020-10-19 18:05:30,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:05:30,423 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-19 18:05:30,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:05:30,441 INFO L225 Difference]: With dead ends: 160 [2020-10-19 18:05:30,442 INFO L226 Difference]: Without dead ends: 149 [2020-10-19 18:05:30,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:05:30,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-19 18:05:30,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 114. [2020-10-19 18:05:30,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-19 18:05:30,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 138 transitions. [2020-10-19 18:05:30,491 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 138 transitions. Word has length 10 [2020-10-19 18:05:30,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:05:30,492 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 138 transitions. [2020-10-19 18:05:30,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:05:30,492 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 138 transitions. [2020-10-19 18:05:30,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-19 18:05:30,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:05:30,493 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:05:30,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-19 18:05:30,707 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:05:30,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:05:30,708 INFO L82 PathProgramCache]: Analyzing trace with hash -243684714, now seen corresponding path program 1 times [2020-10-19 18:05:30,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:05:30,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [499185356] [2020-10-19 18:05:30,710 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 18:05:30,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:30,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 18:05:30,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:05:30,834 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 18:05:30,835 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:05:30,837 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:05:30,837 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:05:30,838 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 18:05:30,848 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 18:05:30,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:05:30,862 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 18:05:30,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [499185356] [2020-10-19 18:05:30,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:05:30,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-19 18:05:30,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406921473] [2020-10-19 18:05:30,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:05:30,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:05:30,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:05:30,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:05:30,867 INFO L87 Difference]: Start difference. First operand 114 states and 138 transitions. Second operand 4 states. [2020-10-19 18:05:31,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:05:31,165 INFO L93 Difference]: Finished difference Result 109 states and 118 transitions. [2020-10-19 18:05:31,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:05:31,165 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-19 18:05:31,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:05:31,167 INFO L225 Difference]: With dead ends: 109 [2020-10-19 18:05:31,167 INFO L226 Difference]: Without dead ends: 109 [2020-10-19 18:05:31,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:05:31,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-19 18:05:31,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 103. [2020-10-19 18:05:31,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-19 18:05:31,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 112 transitions. [2020-10-19 18:05:31,177 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 112 transitions. Word has length 10 [2020-10-19 18:05:31,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:05:31,178 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 112 transitions. [2020-10-19 18:05:31,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:05:31,178 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 112 transitions. [2020-10-19 18:05:31,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-19 18:05:31,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:05:31,179 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:05:31,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-19 18:05:31,394 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:05:31,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:05:31,394 INFO L82 PathProgramCache]: Analyzing trace with hash 235389844, now seen corresponding path program 1 times [2020-10-19 18:05:31,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:05:31,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2008016333] [2020-10-19 18:05:31,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-19 18:05:31,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:31,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-19 18:05:31,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:05:31,549 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 18:05:31,550 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:05:31,556 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:05:31,556 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:05:31,557 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-19 18:05:31,585 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-10-19 18:05:31,585 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:05:31,600 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:05:31,607 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-10-19 18:05:31,607 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:05:31,619 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:05:31,621 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 18:05:31,621 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:23 [2020-10-19 18:05:31,656 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-10-19 18:05:31,657 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:05:31,669 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:05:31,672 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2020-10-19 18:05:31,673 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:05:31,678 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:05:31,679 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 18:05:31,679 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:39, output treesize:9 [2020-10-19 18:05:31,712 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:05:31,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:05:32,006 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:05:32,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2008016333] [2020-10-19 18:05:32,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:05:32,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-10-19 18:05:32,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126038427] [2020-10-19 18:05:32,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-19 18:05:32,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:05:32,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-19 18:05:32,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:05:32,008 INFO L87 Difference]: Start difference. First operand 103 states and 112 transitions. Second operand 10 states. [2020-10-19 18:05:33,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:05:33,851 INFO L93 Difference]: Finished difference Result 149 states and 164 transitions. [2020-10-19 18:05:33,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 18:05:33,851 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-10-19 18:05:33,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:05:33,853 INFO L225 Difference]: With dead ends: 149 [2020-10-19 18:05:33,853 INFO L226 Difference]: Without dead ends: 149 [2020-10-19 18:05:33,854 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-10-19 18:05:33,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-19 18:05:33,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 99. [2020-10-19 18:05:33,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-19 18:05:33,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 111 transitions. [2020-10-19 18:05:33,864 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 111 transitions. Word has length 17 [2020-10-19 18:05:33,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:05:33,864 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 111 transitions. [2020-10-19 18:05:33,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-19 18:05:33,864 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 111 transitions. [2020-10-19 18:05:33,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-19 18:05:33,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:05:33,865 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:05:34,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-19 18:05:34,071 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:05:34,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:05:34,072 INFO L82 PathProgramCache]: Analyzing trace with hash 235389843, now seen corresponding path program 1 times [2020-10-19 18:05:34,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:05:34,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [843693090] [2020-10-19 18:05:34,074 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 18:05:34,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:34,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-19 18:05:34,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:05:34,197 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 18:05:34,197 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:05:34,199 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:05:34,200 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:05:34,200 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 18:05:34,218 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-10-19 18:05:34,218 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:05:34,229 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:05:34,230 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 18:05:34,230 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:13 [2020-10-19 18:05:34,247 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2020-10-19 18:05:34,248 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:05:34,251 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:05:34,251 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 18:05:34,251 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:7 [2020-10-19 18:05:34,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:05:34,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:05:34,295 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:05:34,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [843693090] [2020-10-19 18:05:34,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:05:34,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-10-19 18:05:34,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422806478] [2020-10-19 18:05:34,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:05:34,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 18:05:34,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:05:34,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:05:34,297 INFO L87 Difference]: Start difference. First operand 99 states and 111 transitions. Second operand 6 states. [2020-10-19 18:05:34,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:05:34,913 INFO L93 Difference]: Finished difference Result 135 states and 151 transitions. [2020-10-19 18:05:34,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:05:34,913 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-19 18:05:34,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:05:34,915 INFO L225 Difference]: With dead ends: 135 [2020-10-19 18:05:34,915 INFO L226 Difference]: Without dead ends: 135 [2020-10-19 18:05:34,916 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:05:34,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-19 18:05:34,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 93. [2020-10-19 18:05:34,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-19 18:05:34,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 101 transitions. [2020-10-19 18:05:34,923 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 101 transitions. Word has length 17 [2020-10-19 18:05:34,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:05:34,924 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 101 transitions. [2020-10-19 18:05:34,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:05:34,924 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 101 transitions. [2020-10-19 18:05:34,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-19 18:05:34,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:05:34,925 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:05:35,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-19 18:05:35,133 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr33ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr31ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr36ENSURES_VIOLATIONMEMORY_LEAK, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr32ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr30ASSERT_VIOLATIONMEMORY_FREE, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:05:35,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:05:35,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1387471408, now seen corresponding path program 1 times [2020-10-19 18:05:35,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 18:05:35,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1203224676] [2020-10-19 18:05:35,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-10-19 18:05:35,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:35,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 18:05:35,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:05:35,295 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 18:05:35,295 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:05:35,304 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:05:35,304 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:05:35,305 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:14 [2020-10-19 18:05:35,337 INFO L350 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2020-10-19 18:05:35,337 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 29 treesize of output 13 [2020-10-19 18:05:35,338 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:05:35,341 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:05:35,341 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:05:35,342 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:9 [2020-10-19 18:05:35,364 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 18:05:35,365 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:05:35,367 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:05:35,368 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 18:05:35,368 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:5 [2020-10-19 18:05:35,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:05:35,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:05:35,431 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 18:05:35,437 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:05:35,438 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 18:05:35,438 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:18 [2020-10-19 18:05:35,503 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 160 treesize of output 152 [2020-10-19 18:05:35,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1203224676] [2020-10-19 18:05:35,506 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-19 18:05:35,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [707858319] [2020-10-19 18:05:35,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-19 18:05:35,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:35,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-19 18:05:35,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:05:35,824 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 18:05:35,824 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:05:35,834 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:05:35,835 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:05:35,835 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:17 [2020-10-19 18:05:35,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:05:35,874 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 29 treesize of output 13 [2020-10-19 18:05:35,875 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:05:35,879 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:05:35,879 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:05:35,880 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:13 [2020-10-19 18:05:35,926 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 18:05:35,927 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:05:35,929 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:05:35,930 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 18:05:35,930 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:3 [2020-10-19 18:05:35,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:05:35,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:05:35,942 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 18:05:35,947 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:05:35,948 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 18:05:35,948 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:18 [2020-10-19 18:05:35,993 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 160 treesize of output 152 [2020-10-19 18:05:35,994 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-19 18:05:35,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206239584] [2020-10-19 18:05:35,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:05:36,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:05:36,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 18:05:36,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:05:36,122 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 18:05:36,123 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:05:36,130 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:05:36,130 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:05:36,131 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:14 [2020-10-19 18:05:36,148 INFO L350 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2020-10-19 18:05:36,148 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 29 treesize of output 13 [2020-10-19 18:05:36,149 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:05:36,151 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:05:36,151 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:05:36,152 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:9 [2020-10-19 18:05:36,158 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 18:05:36,159 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:05:36,161 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:05:36,162 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 18:05:36,162 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:5 [2020-10-19 18:05:36,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:05:36,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 18:05:36,170 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 18:05:36,176 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:05:36,177 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 18:05:36,177 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:18 [2020-10-19 18:05:36,219 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 160 treesize of output 152 [2020-10-19 18:05:36,221 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-19 18:05:36,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:05:36,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-19 18:05:36,221 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-10-19 18:05:36,221 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 18:05:36,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk,6 mathsat -unsat_core_generation=3,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:05:36,841 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-19 18:05:36,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:05:36 BoogieIcfgContainer [2020-10-19 18:05:36,842 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:05:36,842 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:05:36,842 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:05:36,843 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:05:36,843 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:05:28" (3/4) ... [2020-10-19 18:05:36,847 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 18:05:36,847 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:05:36,848 INFO L168 Benchmark]: Toolchain (without parser) took 9708.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 217.6 MB). Free memory was 951.9 MB in the beginning and 880.2 MB in the end (delta: 71.7 MB). Peak memory consumption was 289.2 MB. Max. memory is 11.5 GB. [2020-10-19 18:05:36,849 INFO L168 Benchmark]: CDTParser took 0.29 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 18:05:36,850 INFO L168 Benchmark]: CACSL2BoogieTranslator took 673.94 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 951.9 MB in the beginning and 1.1 GB in the end (delta: -154.5 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. [2020-10-19 18:05:36,850 INFO L168 Benchmark]: Boogie Preprocessor took 89.79 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 18:05:36,851 INFO L168 Benchmark]: RCFGBuilder took 975.95 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 65.0 MB). Peak memory consumption was 65.0 MB. Max. memory is 11.5 GB. [2020-10-19 18:05:36,851 INFO L168 Benchmark]: TraceAbstraction took 7954.89 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 73.9 MB). Free memory was 1.0 GB in the beginning and 880.2 MB in the end (delta: 154.6 MB). Peak memory consumption was 228.5 MB. Max. memory is 11.5 GB. [2020-10-19 18:05:36,852 INFO L168 Benchmark]: Witness Printer took 4.79 ms. Allocated memory is still 1.2 GB. Free memory is still 880.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:05:36,855 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 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 673.94 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 951.9 MB in the beginning and 1.1 GB in the end (delta: -154.5 MB). Peak memory consumption was 20.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 89.79 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 975.95 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 65.0 MB). Peak memory consumption was 65.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 7954.89 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 73.9 MB). Free memory was 1.0 GB in the beginning and 880.2 MB in the end (delta: 154.6 MB). Peak memory consumption was 228.5 MB. Max. memory is 11.5 GB. * Witness Printer took 4.79 ms. Allocated memory is still 1.2 GB. Free memory is still 880.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 559]: 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: [L532] int i = 0; [L533] int y = 0; [L534] List a = (List) malloc(sizeof(struct node)); [L535] COND FALSE !(a == 0) [L536] List t; [L537] List p = a; [L538] COND FALSE !(i < 10 && __VERIFIER_nondet_int()) [L546] COND FALSE !(y < 10 && __VERIFIER_nondet_int()) [L554] p->h = 3 [L555] p->n = 0 [L556] i = 0 [L557] y = 0 [L558] p = a [L559] EXPR p->h [L559] COND TRUE p->h == 1 [L560] i++ [L561] EXPR p->n [L561] p = p->n [L559] p->h - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 121 locations, 38 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 7.8s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 235 SDtfs, 520 SDslu, 530 SDs, 0 SdLazy, 998 SolverSat, 102 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 118 GetRequests, 87 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=114occurred in iteration=1, 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, 4 MinimizatonAttempts, 133 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 6260 SizeOfPredicates, 27 NumberOfNonLiveVariables, 336 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 8/8 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...