./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../sv-benchmarks/c/list-properties/list-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/list-properties/list-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-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-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 857285933727e0d6539ccc24abeb7a5fe95b45c6 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup) --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 18:26:18,625 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:26:18,627 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:26:18,653 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:26:18,653 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:26:18,655 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:26:18,656 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:26:18,658 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:26:18,660 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:26:18,661 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:26:18,662 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:26:18,664 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:26:18,664 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:26:18,665 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:26:18,667 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:26:18,668 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:26:18,669 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:26:18,670 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:26:18,672 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:26:18,674 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:26:18,678 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:26:18,679 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:26:18,681 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:26:18,682 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:26:18,684 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:26:18,685 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:26:18,685 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:26:18,686 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:26:18,687 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:26:18,688 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:26:18,689 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:26:18,689 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:26:18,690 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:26:18,691 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:26:18,692 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:26:18,693 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:26:18,693 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:26:18,694 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:26:18,694 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:26:18,695 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:26:18,696 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:26:18,697 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2020-10-19 18:26:18,721 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:26:18,721 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:26:18,723 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:26:18,723 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:26:18,724 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:26:18,724 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:26:18,724 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:26:18,725 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:26:18,725 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:26:18,725 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:26:18,725 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:26:18,726 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 18:26:18,726 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 18:26:18,726 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:26:18,727 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 18:26:18,727 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:26:18,727 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:26:18,727 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:26:18,728 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:26:18,728 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:26:18,728 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:26:18,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:26:18,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:26:18,729 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:26:18,729 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:26:18,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 18:26:18,730 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:26:18,730 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-memcleanup) ) 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 -> 857285933727e0d6539ccc24abeb7a5fe95b45c6 [2020-10-19 18:26:19,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:26:19,070 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:26:19,074 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:26:19,075 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:26:19,076 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:26:19,077 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/list-2.i [2020-10-19 18:26:19,137 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efa0d3735/b5b5f307c81544018f9d5513cdfe258d/FLAGa71f8131b [2020-10-19 18:26:19,612 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:26:19,613 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/list-2.i [2020-10-19 18:26:19,626 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efa0d3735/b5b5f307c81544018f9d5513cdfe258d/FLAGa71f8131b [2020-10-19 18:26:19,639 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efa0d3735/b5b5f307c81544018f9d5513cdfe258d [2020-10-19 18:26:19,642 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:26:19,647 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 18:26:19,649 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:26:19,649 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:26:19,652 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:26:19,653 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:26:19" (1/1) ... [2020-10-19 18:26:19,656 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46d3793d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:19, skipping insertion in model container [2020-10-19 18:26:19,657 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:26:19" (1/1) ... [2020-10-19 18:26:19,664 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:26:19,704 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:26:20,121 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:26:20,133 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:26:20,184 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:26:20,239 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:26:20,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:20 WrapperNode [2020-10-19 18:26:20,240 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:26:20,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:26:20,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:26:20,241 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:26:20,256 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:20" (1/1) ... [2020-10-19 18:26:20,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:20" (1/1) ... [2020-10-19 18:26:20,273 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:20" (1/1) ... [2020-10-19 18:26:20,273 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:20" (1/1) ... [2020-10-19 18:26:20,293 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:20" (1/1) ... [2020-10-19 18:26:20,299 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:20" (1/1) ... [2020-10-19 18:26:20,303 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:20" (1/1) ... [2020-10-19 18:26:20,311 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:26:20,312 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:26:20,312 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:26:20,312 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:26:20,313 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:20" (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 18:26:20,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 18:26:20,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:26:20,393 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-19 18:26:20,393 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-19 18:26:20,393 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-19 18:26:20,394 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-19 18:26:20,395 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-19 18:26:20,396 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-19 18:26:20,396 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-19 18:26:20,396 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 18:26:20,396 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-19 18:26:20,397 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-19 18:26:20,398 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-19 18:26:20,398 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-19 18:26:20,398 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-19 18:26:20,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 18:26:20,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-19 18:26:20,401 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-19 18:26:20,402 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-19 18:26:20,402 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-19 18:26:20,402 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-19 18:26:20,403 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-19 18:26:20,403 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-19 18:26:20,403 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-19 18:26:20,403 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-19 18:26:20,404 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-19 18:26:20,404 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-19 18:26:20,405 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-19 18:26:20,405 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-19 18:26:20,405 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-19 18:26:20,405 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-19 18:26:20,405 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-19 18:26:20,406 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-19 18:26:20,406 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-19 18:26:20,406 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-19 18:26:20,406 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-19 18:26:20,407 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-19 18:26:20,407 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-19 18:26:20,407 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-19 18:26:20,407 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-19 18:26:20,408 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-19 18:26:20,408 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-19 18:26:20,408 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-19 18:26:20,409 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-19 18:26:20,409 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-19 18:26:20,410 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-19 18:26:20,411 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-19 18:26:20,411 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-19 18:26:20,411 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-19 18:26:20,412 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-19 18:26:20,412 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-19 18:26:20,413 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-19 18:26:20,413 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-19 18:26:20,413 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-19 18:26:20,414 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-19 18:26:20,414 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-19 18:26:20,414 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-19 18:26:20,414 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-19 18:26:20,414 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-19 18:26:20,415 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-19 18:26:20,415 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-19 18:26:20,415 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-19 18:26:20,416 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-19 18:26:20,416 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-19 18:26:20,416 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-19 18:26:20,416 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-19 18:26:20,416 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-19 18:26:20,417 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-19 18:26:20,418 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-19 18:26:20,418 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-19 18:26:20,418 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-19 18:26:20,418 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-19 18:26:20,419 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-19 18:26:20,420 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-19 18:26:20,420 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-19 18:26:20,421 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-19 18:26:20,422 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-19 18:26:20,422 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-19 18:26:20,422 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-19 18:26:20,423 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-19 18:26:20,423 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-19 18:26:20,423 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-19 18:26:20,423 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-19 18:26:20,423 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-19 18:26:20,424 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-19 18:26:20,424 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-19 18:26:20,424 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-19 18:26:20,424 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-19 18:26:20,424 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-19 18:26:20,425 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-19 18:26:20,425 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-19 18:26:20,425 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-19 18:26:20,425 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-19 18:26:20,425 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-19 18:26:20,426 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-19 18:26:20,426 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-19 18:26:20,426 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-19 18:26:20,426 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-19 18:26:20,426 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-19 18:26:20,427 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-19 18:26:20,427 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-19 18:26:20,427 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-19 18:26:20,427 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-19 18:26:20,427 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-19 18:26:20,428 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-19 18:26:20,428 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-19 18:26:20,428 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-19 18:26:20,428 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-19 18:26:20,428 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-19 18:26:20,429 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-19 18:26:20,429 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-19 18:26:20,429 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-19 18:26:20,429 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-19 18:26:20,430 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-19 18:26:20,430 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-19 18:26:20,430 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-19 18:26:20,431 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-19 18:26:20,431 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-19 18:26:20,431 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-19 18:26:20,431 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-19 18:26:20,432 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-19 18:26:20,432 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-19 18:26:20,432 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-19 18:26:20,432 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-19 18:26:20,433 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 18:26:20,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 18:26:20,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 18:26:20,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-19 18:26:20,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-19 18:26:20,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 18:26:20,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 18:26:20,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 18:26:20,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:26:20,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 18:26:20,838 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-19 18:26:21,162 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:26:21,163 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-19 18:26:21,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:26:21 BoogieIcfgContainer [2020-10-19 18:26:21,165 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:26:21,167 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:26:21,167 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:26:21,171 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:26:21,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:26:19" (1/3) ... [2020-10-19 18:26:21,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5212d8c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:26:21, skipping insertion in model container [2020-10-19 18:26:21,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:26:20" (2/3) ... [2020-10-19 18:26:21,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5212d8c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:26:21, skipping insertion in model container [2020-10-19 18:26:21,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:26:21" (3/3) ... [2020-10-19 18:26:21,175 INFO L111 eAbstractionObserver]: Analyzing ICFG list-2.i [2020-10-19 18:26:21,187 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:26:21,196 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 26 error locations. [2020-10-19 18:26:21,210 INFO L253 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2020-10-19 18:26:21,233 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:26:21,233 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 18:26:21,233 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:26:21,233 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:26:21,234 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:26:21,234 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:26:21,234 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:26:21,235 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:26:21,253 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2020-10-19 18:26:21,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-19 18:26:21,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:21,263 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:21,264 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:26:21,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:21,269 INFO L82 PathProgramCache]: Analyzing trace with hash -529419567, now seen corresponding path program 1 times [2020-10-19 18:26:21,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:21,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768013347] [2020-10-19 18:26:21,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:21,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:21,617 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-10-19 18:26:21,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:21,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:21,636 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 18:26:21,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768013347] [2020-10-19 18:26:21,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:21,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:26:21,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054057985] [2020-10-19 18:26:21,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:26:21,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:21,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:26:21,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:26:21,666 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 5 states. [2020-10-19 18:26:21,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:21,985 INFO L93 Difference]: Finished difference Result 82 states and 90 transitions. [2020-10-19 18:26:21,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:26:21,988 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-19 18:26:21,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:21,999 INFO L225 Difference]: With dead ends: 82 [2020-10-19 18:26:21,999 INFO L226 Difference]: Without dead ends: 74 [2020-10-19 18:26:22,001 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:26:22,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-19 18:26:22,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 69. [2020-10-19 18:26:22,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-19 18:26:22,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 79 transitions. [2020-10-19 18:26:22,054 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 79 transitions. Word has length 11 [2020-10-19 18:26:22,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:22,055 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 79 transitions. [2020-10-19 18:26:22,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:26:22,055 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 79 transitions. [2020-10-19 18:26:22,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-19 18:26:22,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:22,056 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:22,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 18:26:22,057 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:26:22,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:22,058 INFO L82 PathProgramCache]: Analyzing trace with hash -529419566, now seen corresponding path program 1 times [2020-10-19 18:26:22,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:22,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329216021] [2020-10-19 18:26:22,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:22,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:22,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:22,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:22,219 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 18:26:22,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329216021] [2020-10-19 18:26:22,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:22,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:26:22,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75915657] [2020-10-19 18:26:22,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:26:22,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:22,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:26:22,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:26:22,225 INFO L87 Difference]: Start difference. First operand 69 states and 79 transitions. Second operand 5 states. [2020-10-19 18:26:22,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:22,504 INFO L93 Difference]: Finished difference Result 93 states and 101 transitions. [2020-10-19 18:26:22,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:26:22,505 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-19 18:26:22,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:22,510 INFO L225 Difference]: With dead ends: 93 [2020-10-19 18:26:22,510 INFO L226 Difference]: Without dead ends: 93 [2020-10-19 18:26:22,511 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 18:26:22,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-19 18:26:22,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 83. [2020-10-19 18:26:22,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-19 18:26:22,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2020-10-19 18:26:22,537 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 11 [2020-10-19 18:26:22,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:22,537 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2020-10-19 18:26:22,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:26:22,538 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2020-10-19 18:26:22,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-19 18:26:22,539 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:22,539 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:22,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 18:26:22,540 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:26:22,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:22,540 INFO L82 PathProgramCache]: Analyzing trace with hash 745437086, now seen corresponding path program 1 times [2020-10-19 18:26:22,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:22,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220921742] [2020-10-19 18:26:22,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:22,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:22,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:22,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:22,752 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 18:26:22,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220921742] [2020-10-19 18:26:22,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:22,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-19 18:26:22,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030786585] [2020-10-19 18:26:22,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:26:22,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:22,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:26:22,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:26:22,761 INFO L87 Difference]: Start difference. First operand 83 states and 91 transitions. Second operand 7 states. [2020-10-19 18:26:23,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:23,067 INFO L93 Difference]: Finished difference Result 119 states and 129 transitions. [2020-10-19 18:26:23,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:26:23,067 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-19 18:26:23,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:23,069 INFO L225 Difference]: With dead ends: 119 [2020-10-19 18:26:23,069 INFO L226 Difference]: Without dead ends: 119 [2020-10-19 18:26:23,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:26:23,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-19 18:26:23,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 86. [2020-10-19 18:26:23,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-19 18:26:23,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 94 transitions. [2020-10-19 18:26:23,080 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 94 transitions. Word has length 19 [2020-10-19 18:26:23,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:23,081 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 94 transitions. [2020-10-19 18:26:23,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:26:23,081 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 94 transitions. [2020-10-19 18:26:23,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-19 18:26:23,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:23,086 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:23,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 18:26:23,092 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:26:23,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:23,092 INFO L82 PathProgramCache]: Analyzing trace with hash 2009276100, now seen corresponding path program 1 times [2020-10-19 18:26:23,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:23,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950805505] [2020-10-19 18:26:23,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:23,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:23,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:23,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:23,266 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 18:26:23,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950805505] [2020-10-19 18:26:23,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:23,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 18:26:23,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630417160] [2020-10-19 18:26:23,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:26:23,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:23,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:26:23,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:26:23,269 INFO L87 Difference]: Start difference. First operand 86 states and 94 transitions. Second operand 7 states. [2020-10-19 18:26:23,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:23,639 INFO L93 Difference]: Finished difference Result 110 states and 120 transitions. [2020-10-19 18:26:23,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:26:23,641 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-19 18:26:23,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:23,644 INFO L225 Difference]: With dead ends: 110 [2020-10-19 18:26:23,644 INFO L226 Difference]: Without dead ends: 110 [2020-10-19 18:26:23,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:26:23,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-19 18:26:23,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 89. [2020-10-19 18:26:23,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-19 18:26:23,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 100 transitions. [2020-10-19 18:26:23,668 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 100 transitions. Word has length 19 [2020-10-19 18:26:23,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:23,670 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 100 transitions. [2020-10-19 18:26:23,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:26:23,671 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 100 transitions. [2020-10-19 18:26:23,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-19 18:26:23,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:23,673 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:23,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 18:26:23,673 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:26:23,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:23,674 INFO L82 PathProgramCache]: Analyzing trace with hash 2009276101, now seen corresponding path program 1 times [2020-10-19 18:26:23,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:23,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967151220] [2020-10-19 18:26:23,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:23,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:23,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:23,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:23,825 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 18:26:23,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967151220] [2020-10-19 18:26:23,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:23,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 18:26:23,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910177749] [2020-10-19 18:26:23,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:26:23,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:23,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:26:23,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:26:23,828 INFO L87 Difference]: Start difference. First operand 89 states and 100 transitions. Second operand 7 states. [2020-10-19 18:26:24,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:24,304 INFO L93 Difference]: Finished difference Result 111 states and 122 transitions. [2020-10-19 18:26:24,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 18:26:24,305 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-19 18:26:24,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:24,306 INFO L225 Difference]: With dead ends: 111 [2020-10-19 18:26:24,307 INFO L226 Difference]: Without dead ends: 111 [2020-10-19 18:26:24,308 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 18:26:24,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-19 18:26:24,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 80. [2020-10-19 18:26:24,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-19 18:26:24,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 89 transitions. [2020-10-19 18:26:24,315 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 89 transitions. Word has length 19 [2020-10-19 18:26:24,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:24,315 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 89 transitions. [2020-10-19 18:26:24,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:26:24,315 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 89 transitions. [2020-10-19 18:26:24,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-19 18:26:24,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:24,316 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:24,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-19 18:26:24,317 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:26:24,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:24,317 INFO L82 PathProgramCache]: Analyzing trace with hash -942076661, now seen corresponding path program 1 times [2020-10-19 18:26:24,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:24,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239243895] [2020-10-19 18:26:24,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:24,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:24,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:24,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:24,403 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 18:26:24,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239243895] [2020-10-19 18:26:24,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:24,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-19 18:26:24,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746733270] [2020-10-19 18:26:24,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:26:24,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:24,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:26:24,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:26:24,405 INFO L87 Difference]: Start difference. First operand 80 states and 89 transitions. Second operand 7 states. [2020-10-19 18:26:24,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:24,641 INFO L93 Difference]: Finished difference Result 107 states and 116 transitions. [2020-10-19 18:26:24,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:26:24,641 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-10-19 18:26:24,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:24,642 INFO L225 Difference]: With dead ends: 107 [2020-10-19 18:26:24,643 INFO L226 Difference]: Without dead ends: 107 [2020-10-19 18:26:24,643 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:26:24,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-19 18:26:24,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 82. [2020-10-19 18:26:24,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-19 18:26:24,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2020-10-19 18:26:24,655 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 21 [2020-10-19 18:26:24,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:24,655 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2020-10-19 18:26:24,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:26:24,655 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2020-10-19 18:26:24,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-19 18:26:24,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:24,657 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:24,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-19 18:26:24,657 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:26:24,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:24,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1237890890, now seen corresponding path program 1 times [2020-10-19 18:26:24,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:24,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987805217] [2020-10-19 18:26:24,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:24,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:24,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:24,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:24,770 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 18:26:24,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987805217] [2020-10-19 18:26:24,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:24,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 18:26:24,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396801363] [2020-10-19 18:26:24,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:26:24,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:24,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:26:24,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:26:24,772 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand 7 states. [2020-10-19 18:26:25,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:25,025 INFO L93 Difference]: Finished difference Result 91 states and 99 transitions. [2020-10-19 18:26:25,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:26:25,026 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-10-19 18:26:25,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:25,027 INFO L225 Difference]: With dead ends: 91 [2020-10-19 18:26:25,027 INFO L226 Difference]: Without dead ends: 91 [2020-10-19 18:26:25,027 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 18:26:25,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-19 18:26:25,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 80. [2020-10-19 18:26:25,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-19 18:26:25,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 89 transitions. [2020-10-19 18:26:25,033 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 89 transitions. Word has length 21 [2020-10-19 18:26:25,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:25,033 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 89 transitions. [2020-10-19 18:26:25,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:26:25,033 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 89 transitions. [2020-10-19 18:26:25,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-19 18:26:25,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:25,034 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:25,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-19 18:26:25,035 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:26:25,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:25,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1237890889, now seen corresponding path program 1 times [2020-10-19 18:26:25,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:25,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972179330] [2020-10-19 18:26:25,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:25,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:25,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:25,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:25,121 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 18:26:25,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972179330] [2020-10-19 18:26:25,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:25,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 18:26:25,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337170450] [2020-10-19 18:26:25,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:26:25,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:25,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:26:25,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:26:25,123 INFO L87 Difference]: Start difference. First operand 80 states and 89 transitions. Second operand 7 states. [2020-10-19 18:26:25,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:25,467 INFO L93 Difference]: Finished difference Result 88 states and 97 transitions. [2020-10-19 18:26:25,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 18:26:25,467 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-10-19 18:26:25,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:25,468 INFO L225 Difference]: With dead ends: 88 [2020-10-19 18:26:25,468 INFO L226 Difference]: Without dead ends: 88 [2020-10-19 18:26:25,469 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 18:26:25,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-19 18:26:25,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 68. [2020-10-19 18:26:25,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-19 18:26:25,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2020-10-19 18:26:25,474 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 21 [2020-10-19 18:26:25,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:25,475 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2020-10-19 18:26:25,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:26:25,475 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2020-10-19 18:26:25,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-19 18:26:25,476 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:25,476 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:25,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-19 18:26:25,477 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:26:25,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:25,477 INFO L82 PathProgramCache]: Analyzing trace with hash 851943190, now seen corresponding path program 1 times [2020-10-19 18:26:25,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:25,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652947015] [2020-10-19 18:26:25,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:25,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:25,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:25,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:25,541 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 18:26:25,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652947015] [2020-10-19 18:26:25,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:25,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-19 18:26:25,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839117921] [2020-10-19 18:26:25,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:26:25,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:25,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:26:25,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:26:25,544 INFO L87 Difference]: Start difference. First operand 68 states and 76 transitions. Second operand 7 states. [2020-10-19 18:26:25,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:25,741 INFO L93 Difference]: Finished difference Result 92 states and 99 transitions. [2020-10-19 18:26:25,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:26:25,741 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-19 18:26:25,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:25,742 INFO L225 Difference]: With dead ends: 92 [2020-10-19 18:26:25,743 INFO L226 Difference]: Without dead ends: 92 [2020-10-19 18:26:25,743 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:26:25,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-19 18:26:25,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 70. [2020-10-19 18:26:25,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-19 18:26:25,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2020-10-19 18:26:25,747 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 23 [2020-10-19 18:26:25,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:25,748 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2020-10-19 18:26:25,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:26:25,748 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2020-10-19 18:26:25,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-19 18:26:25,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:25,749 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 18:26:25,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-19 18:26:25,749 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-19 18:26:25,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:25,750 INFO L82 PathProgramCache]: Analyzing trace with hash 858770483, now seen corresponding path program 1 times [2020-10-19 18:26:25,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:25,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240363078] [2020-10-19 18:26:25,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:25,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:26:25,763 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:26:25,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:26:25,773 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:26:25,807 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:26:25,807 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 18:26:25,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-19 18:26:25,824 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2020-10-19 18:26:25,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:26:25 BoogieIcfgContainer [2020-10-19 18:26:25,841 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:26:25,841 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:26:25,841 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:26:25,842 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:26:25,842 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:26:21" (3/4) ... [2020-10-19 18:26:25,845 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-19 18:26:25,851 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2020-10-19 18:26:25,899 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 18:26:25,899 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:26:25,901 INFO L168 Benchmark]: Toolchain (without parser) took 6257.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 219.7 MB). Free memory was 950.6 MB in the beginning and 968.6 MB in the end (delta: -18.0 MB). Peak memory consumption was 201.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:26:25,902 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:26:25,902 INFO L168 Benchmark]: CACSL2BoogieTranslator took 591.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 945.2 MB in the beginning and 1.1 GB in the end (delta: -169.9 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2020-10-19 18:26:25,903 INFO L168 Benchmark]: Boogie Preprocessor took 70.44 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 18:26:25,904 INFO L168 Benchmark]: RCFGBuilder took 853.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 58.4 MB). Peak memory consumption was 58.4 MB. Max. memory is 11.5 GB. [2020-10-19 18:26:25,904 INFO L168 Benchmark]: TraceAbstraction took 4674.17 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 71.8 MB). Free memory was 1.1 GB in the beginning and 968.6 MB in the end (delta: 88.2 MB). Peak memory consumption was 160.0 MB. Max. memory is 11.5 GB. [2020-10-19 18:26:25,905 INFO L168 Benchmark]: Witness Printer took 58.11 ms. Allocated memory is still 1.2 GB. Free memory was 968.6 MB in the beginning and 968.6 MB in the end (delta: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. [2020-10-19 18:26:25,908 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 591.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 945.2 MB in the beginning and 1.1 GB in the end (delta: -169.9 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 70.44 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 853.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 58.4 MB). Peak memory consumption was 58.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4674.17 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 71.8 MB). Free memory was 1.1 GB in the beginning and 968.6 MB in the end (delta: 88.2 MB). Peak memory consumption was 160.0 MB. Max. memory is 11.5 GB. * Witness Printer took 58.11 ms. Allocated memory is still 1.2 GB. Free memory was 968.6 MB in the beginning and 968.6 MB in the end (delta: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 531]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}] [L533] COND FALSE !(a == 0) VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}] [L534] List t; [L535] List p = a; VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L536] COND FALSE !(__VERIFIER_nondet_int()) [L543] COND FALSE !(__VERIFIER_nondet_int()) [L550] p->h = 3 VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L551] p = a VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L552] EXPR p->h VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3] [L552] COND FALSE !(p->h == 2) [L554] EXPR p->h VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3] [L554] COND FALSE !(p->h == 1) [L556] EXPR p->h VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3] [L556] COND FALSE !(p->h != 3) [L558] return 0; VAL [\result=0, a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 94 locations, 26 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.5s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 409 SDtfs, 677 SDslu, 911 SDs, 0 SdLazy, 1850 SolverSat, 135 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 90 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=89occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 178 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 187 NumberOfCodeBlocks, 187 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 156 ConstructedInterpolants, 0 QuantifiedInterpolants, 14484 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 12/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...