./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 cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_445e766a-c161-4e99-9ac6-cd51d7bef123/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_445e766a-c161-4e99-9ac6-cd51d7bef123/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_445e766a-c161-4e99-9ac6-cd51d7bef123/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_445e766a-c161-4e99-9ac6-cd51d7bef123/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/list-2.i -s /tmp/vcloud-vcloud-master/worker/working_dir_445e766a-c161-4e99-9ac6-cd51d7bef123/bin/uautomizer/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_445e766a-c161-4e99-9ac6-cd51d7bef123/bin/uautomizer --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 6439b1baef116d71fdff38c675a38b8a29c42257 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memtrack) --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 08:55:48,345 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:55:48,348 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:55:48,358 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:55:48,359 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:55:48,360 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:55:48,362 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:55:48,364 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:55:48,366 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:55:48,368 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:55:48,370 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:55:48,371 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:55:48,376 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:55:48,378 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:55:48,379 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:55:48,380 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:55:48,381 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:55:48,381 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:55:48,384 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:55:48,386 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:55:48,387 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:55:48,388 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:55:48,389 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:55:48,389 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:55:48,391 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:55:48,391 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:55:48,391 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:55:48,392 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:55:48,392 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:55:48,393 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:55:48,393 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:55:48,393 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:55:48,394 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:55:48,395 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:55:48,395 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:55:48,396 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:55:48,396 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:55:48,396 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:55:48,396 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:55:48,397 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:55:48,397 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:55:48,398 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_445e766a-c161-4e99-9ac6-cd51d7bef123/bin/uautomizer/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2019-10-22 08:55:48,409 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:55:48,419 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:55:48,420 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:55:48,420 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:55:48,421 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:55:48,421 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:55:48,421 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:55:48,421 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:55:48,421 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:55:48,421 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:55:48,422 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:55:48,422 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-10-22 08:55:48,422 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-10-22 08:55:48,422 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:55:48,422 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:55:48,422 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:55:48,423 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:55:48,423 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:55:48,423 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:55:48,423 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:55:48,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:55:48,423 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:55:48,424 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:55:48,424 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:55:48,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:55:48,424 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_445e766a-c161-4e99-9ac6-cd51d7bef123/bin/uautomizer 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 -> 6439b1baef116d71fdff38c675a38b8a29c42257 [2019-10-22 08:55:48,457 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:55:48,470 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:55:48,473 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:55:48,475 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:55:48,475 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:55:48,476 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_445e766a-c161-4e99-9ac6-cd51d7bef123/bin/uautomizer/../../sv-benchmarks/c/list-properties/list-2.i [2019-10-22 08:55:48,530 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_445e766a-c161-4e99-9ac6-cd51d7bef123/bin/uautomizer/data/a5fc3895a/472f1cd68dc84d9ea1b3d2f9e54f0e32/FLAG29d44ec1e [2019-10-22 08:55:48,953 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:55:48,954 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_445e766a-c161-4e99-9ac6-cd51d7bef123/sv-benchmarks/c/list-properties/list-2.i [2019-10-22 08:55:48,963 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_445e766a-c161-4e99-9ac6-cd51d7bef123/bin/uautomizer/data/a5fc3895a/472f1cd68dc84d9ea1b3d2f9e54f0e32/FLAG29d44ec1e [2019-10-22 08:55:49,283 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_445e766a-c161-4e99-9ac6-cd51d7bef123/bin/uautomizer/data/a5fc3895a/472f1cd68dc84d9ea1b3d2f9e54f0e32 [2019-10-22 08:55:49,285 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:55:49,287 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-10-22 08:55:49,288 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:55:49,288 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:55:49,295 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:55:49,296 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:55:49" (1/1) ... [2019-10-22 08:55:49,298 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d6daf3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:49, skipping insertion in model container [2019-10-22 08:55:49,298 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:55:49" (1/1) ... [2019-10-22 08:55:49,305 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:55:49,337 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:55:49,641 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:55:49,653 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:55:49,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:55:49,765 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:55:49,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:49 WrapperNode [2019-10-22 08:55:49,765 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:55:49,766 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:55:49,766 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:55:49,766 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:55:49,779 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:49" (1/1) ... [2019-10-22 08:55:49,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:49" (1/1) ... [2019-10-22 08:55:49,797 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:49" (1/1) ... [2019-10-22 08:55:49,801 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:49" (1/1) ... [2019-10-22 08:55:49,824 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:49" (1/1) ... [2019-10-22 08:55:49,838 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:49" (1/1) ... [2019-10-22 08:55:49,846 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:49" (1/1) ... [2019-10-22 08:55:49,858 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:55:49,859 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:55:49,859 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:55:49,859 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:55:49,863 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_445e766a-c161-4e99-9ac6-cd51d7bef123/bin/uautomizer/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 [2019-10-22 08:55:49,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-22 08:55:49,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:55:49,932 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-22 08:55:49,932 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-22 08:55:49,932 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-10-22 08:55:49,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-10-22 08:55:49,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-10-22 08:55:49,934 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-22 08:55:49,934 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-22 08:55:49,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-22 08:55:49,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-22 08:55:49,935 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-22 08:55:49,935 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-22 08:55:49,935 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-22 08:55:49,935 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-22 08:55:49,935 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-22 08:55:49,936 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-22 08:55:49,936 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-22 08:55:49,936 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-22 08:55:49,936 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-22 08:55:49,936 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-22 08:55:49,936 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-22 08:55:49,938 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-22 08:55:49,938 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-22 08:55:49,938 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-22 08:55:49,939 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-22 08:55:49,939 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-22 08:55:49,939 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-22 08:55:49,939 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-22 08:55:49,939 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-10-22 08:55:49,939 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-10-22 08:55:49,939 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-10-22 08:55:49,940 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-22 08:55:49,940 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-22 08:55:49,940 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-22 08:55:49,940 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-22 08:55:49,940 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-22 08:55:49,940 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-22 08:55:49,940 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-22 08:55:49,940 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-22 08:55:49,941 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-22 08:55:49,941 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-22 08:55:49,941 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-22 08:55:49,941 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-22 08:55:49,941 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-22 08:55:49,941 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-22 08:55:49,941 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-22 08:55:49,941 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-22 08:55:49,941 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-22 08:55:49,941 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-22 08:55:49,942 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-22 08:55:49,942 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-22 08:55:49,942 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-22 08:55:49,942 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-22 08:55:49,942 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-22 08:55:49,942 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-22 08:55:49,942 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-22 08:55:49,942 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-22 08:55:49,942 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-22 08:55:49,943 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-22 08:55:49,943 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-22 08:55:49,943 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-22 08:55:49,943 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-22 08:55:49,943 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-22 08:55:49,943 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-22 08:55:49,943 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-22 08:55:49,943 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-22 08:55:49,944 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-22 08:55:49,944 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-22 08:55:49,944 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-22 08:55:49,944 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-22 08:55:49,944 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-22 08:55:49,944 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-22 08:55:49,944 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-22 08:55:49,944 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-22 08:55:49,944 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-22 08:55:49,945 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-22 08:55:49,945 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-22 08:55:49,945 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-22 08:55:49,945 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-22 08:55:49,945 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-22 08:55:49,945 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-22 08:55:49,945 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-22 08:55:49,945 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-22 08:55:49,946 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-22 08:55:49,948 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-22 08:55:49,949 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-22 08:55:49,949 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-22 08:55:49,949 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-22 08:55:49,949 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-22 08:55:49,949 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-22 08:55:49,949 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-22 08:55:49,949 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-22 08:55:49,950 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-22 08:55:49,950 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-22 08:55:49,950 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-22 08:55:49,950 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-22 08:55:49,950 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-22 08:55:49,950 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-22 08:55:49,950 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-22 08:55:49,950 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-22 08:55:49,950 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-22 08:55:49,950 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-22 08:55:49,951 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-22 08:55:49,951 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-22 08:55:49,951 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-22 08:55:49,951 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-22 08:55:49,951 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-22 08:55:49,951 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-22 08:55:49,951 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-22 08:55:49,951 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-22 08:55:49,951 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-22 08:55:49,952 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-22 08:55:49,952 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-22 08:55:49,952 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-22 08:55:49,952 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-22 08:55:49,952 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-22 08:55:49,952 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-22 08:55:49,952 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-22 08:55:49,952 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-22 08:55:49,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-22 08:55:49,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 08:55:49,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-22 08:55:49,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-22 08:55:49,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 08:55:49,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-22 08:55:49,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:55:49,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 08:55:50,300 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-22 08:55:50,558 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:55:50,558 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-22 08:55:50,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:50 BoogieIcfgContainer [2019-10-22 08:55:50,559 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:55:50,560 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:55:50,560 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:55:50,563 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:55:50,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:55:49" (1/3) ... [2019-10-22 08:55:50,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44d5243f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:55:50, skipping insertion in model container [2019-10-22 08:55:50,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:49" (2/3) ... [2019-10-22 08:55:50,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44d5243f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:55:50, skipping insertion in model container [2019-10-22 08:55:50,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:50" (3/3) ... [2019-10-22 08:55:50,567 INFO L109 eAbstractionObserver]: Analyzing ICFG list-2.i [2019-10-22 08:55:50,580 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:55:50,586 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 25 error locations. [2019-10-22 08:55:50,596 INFO L249 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2019-10-22 08:55:50,614 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:55:50,614 INFO L374 AbstractCegarLoop]: Hoare is false [2019-10-22 08:55:50,614 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:55:50,614 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:55:50,614 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:55:50,614 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:55:50,614 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:55:50,615 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:55:50,628 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2019-10-22 08:55:50,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-22 08:55:50,638 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:50,638 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:50,640 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr15REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION]=== [2019-10-22 08:55:50,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:50,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1350219809, now seen corresponding path program 1 times [2019-10-22 08:55:50,651 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:50,652 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937224895] [2019-10-22 08:55:50,652 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:50,652 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:50,652 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:50,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:50,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:50,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:50,803 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937224895] [2019-10-22 08:55:50,805 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:50,805 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:55:50,805 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418826405] [2019-10-22 08:55:50,810 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:55:50,810 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:50,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:55:50,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:55:50,827 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 3 states. [2019-10-22 08:55:50,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:50,999 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2019-10-22 08:55:51,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:55:51,001 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-10-22 08:55:51,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:51,009 INFO L225 Difference]: With dead ends: 72 [2019-10-22 08:55:51,009 INFO L226 Difference]: Without dead ends: 63 [2019-10-22 08:55:51,011 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:55:51,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-10-22 08:55:51,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2019-10-22 08:55:51,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2019-10-22 08:55:51,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 66 transitions. [2019-10-22 08:55:51,050 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 66 transitions. Word has length 11 [2019-10-22 08:55:51,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:51,051 INFO L462 AbstractCegarLoop]: Abstraction has 63 states and 66 transitions. [2019-10-22 08:55:51,051 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:55:51,051 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 66 transitions. [2019-10-22 08:55:51,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-22 08:55:51,051 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:51,051 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:51,052 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr15REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION]=== [2019-10-22 08:55:51,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:51,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1350245435, now seen corresponding path program 1 times [2019-10-22 08:55:51,052 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:51,052 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609768970] [2019-10-22 08:55:51,052 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:51,053 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:51,053 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:51,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:51,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:51,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:51,156 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609768970] [2019-10-22 08:55:51,156 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:51,157 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 08:55:51,157 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038906918] [2019-10-22 08:55:51,158 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:55:51,159 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:51,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:55:51,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:55:51,161 INFO L87 Difference]: Start difference. First operand 63 states and 66 transitions. Second operand 5 states. [2019-10-22 08:55:51,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:51,366 INFO L93 Difference]: Finished difference Result 70 states and 75 transitions. [2019-10-22 08:55:51,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:55:51,367 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-10-22 08:55:51,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:51,368 INFO L225 Difference]: With dead ends: 70 [2019-10-22 08:55:51,368 INFO L226 Difference]: Without dead ends: 70 [2019-10-22 08:55:51,368 INFO L600 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 [2019-10-22 08:55:51,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2019-10-22 08:55:51,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2019-10-22 08:55:51,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2019-10-22 08:55:51,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2019-10-22 08:55:51,374 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 11 [2019-10-22 08:55:51,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:51,375 INFO L462 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2019-10-22 08:55:51,375 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:55:51,375 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2019-10-22 08:55:51,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-22 08:55:51,375 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:51,375 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:51,376 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr15REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION]=== [2019-10-22 08:55:51,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:51,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1350245434, now seen corresponding path program 1 times [2019-10-22 08:55:51,376 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:51,376 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594877021] [2019-10-22 08:55:51,377 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:51,377 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:51,377 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:51,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:51,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:51,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:51,449 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594877021] [2019-10-22 08:55:51,449 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:51,450 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 08:55:51,452 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717484022] [2019-10-22 08:55:51,453 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:55:51,453 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:51,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:55:51,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:55:51,454 INFO L87 Difference]: Start difference. First operand 65 states and 75 transitions. Second operand 5 states. [2019-10-22 08:55:51,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:51,635 INFO L93 Difference]: Finished difference Result 88 states and 95 transitions. [2019-10-22 08:55:51,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:55:51,635 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-10-22 08:55:51,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:51,636 INFO L225 Difference]: With dead ends: 88 [2019-10-22 08:55:51,637 INFO L226 Difference]: Without dead ends: 88 [2019-10-22 08:55:51,637 INFO L600 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 [2019-10-22 08:55:51,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2019-10-22 08:55:51,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 79. [2019-10-22 08:55:51,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2019-10-22 08:55:51,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 87 transitions. [2019-10-22 08:55:51,644 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 87 transitions. Word has length 11 [2019-10-22 08:55:51,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:51,645 INFO L462 AbstractCegarLoop]: Abstraction has 79 states and 87 transitions. [2019-10-22 08:55:51,645 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:55:51,645 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 87 transitions. [2019-10-22 08:55:51,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-22 08:55:51,646 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:51,646 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:51,646 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr15REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION]=== [2019-10-22 08:55:51,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:51,646 INFO L82 PathProgramCache]: Analyzing trace with hash -878043118, now seen corresponding path program 1 times [2019-10-22 08:55:51,647 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:51,647 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288500708] [2019-10-22 08:55:51,647 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:51,647 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:51,647 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:51,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:51,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:51,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:51,729 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288500708] [2019-10-22 08:55:51,729 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:51,729 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 08:55:51,729 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867304143] [2019-10-22 08:55:51,730 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 08:55:51,730 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:51,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 08:55:51,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:55:51,731 INFO L87 Difference]: Start difference. First operand 79 states and 87 transitions. Second operand 7 states. [2019-10-22 08:55:51,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:51,959 INFO L93 Difference]: Finished difference Result 112 states and 119 transitions. [2019-10-22 08:55:51,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 08:55:51,960 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2019-10-22 08:55:51,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:51,961 INFO L225 Difference]: With dead ends: 112 [2019-10-22 08:55:51,961 INFO L226 Difference]: Without dead ends: 112 [2019-10-22 08:55:51,962 INFO L600 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 [2019-10-22 08:55:51,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2019-10-22 08:55:51,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 82. [2019-10-22 08:55:51,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2019-10-22 08:55:51,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 90 transitions. [2019-10-22 08:55:51,969 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 90 transitions. Word has length 19 [2019-10-22 08:55:51,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:51,969 INFO L462 AbstractCegarLoop]: Abstraction has 82 states and 90 transitions. [2019-10-22 08:55:51,970 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 08:55:51,970 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 90 transitions. [2019-10-22 08:55:51,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-22 08:55:51,970 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:51,971 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:51,971 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr15REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION]=== [2019-10-22 08:55:51,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:51,971 INFO L82 PathProgramCache]: Analyzing trace with hash 385795896, now seen corresponding path program 1 times [2019-10-22 08:55:51,971 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:51,972 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762412812] [2019-10-22 08:55:51,972 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:51,972 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:51,972 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:51,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:52,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:52,053 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:52,054 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762412812] [2019-10-22 08:55:52,054 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:52,054 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-22 08:55:52,055 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012111254] [2019-10-22 08:55:52,055 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 08:55:52,055 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:52,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 08:55:52,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:55:52,056 INFO L87 Difference]: Start difference. First operand 82 states and 90 transitions. Second operand 7 states. [2019-10-22 08:55:52,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:52,317 INFO L93 Difference]: Finished difference Result 105 states and 114 transitions. [2019-10-22 08:55:52,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 08:55:52,318 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2019-10-22 08:55:52,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:52,318 INFO L225 Difference]: With dead ends: 105 [2019-10-22 08:55:52,318 INFO L226 Difference]: Without dead ends: 105 [2019-10-22 08:55:52,319 INFO L600 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 [2019-10-22 08:55:52,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2019-10-22 08:55:52,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 85. [2019-10-22 08:55:52,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2019-10-22 08:55:52,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 96 transitions. [2019-10-22 08:55:52,324 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 96 transitions. Word has length 19 [2019-10-22 08:55:52,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:52,324 INFO L462 AbstractCegarLoop]: Abstraction has 85 states and 96 transitions. [2019-10-22 08:55:52,325 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 08:55:52,325 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 96 transitions. [2019-10-22 08:55:52,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-22 08:55:52,325 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:52,325 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:52,326 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr15REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION]=== [2019-10-22 08:55:52,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:52,326 INFO L82 PathProgramCache]: Analyzing trace with hash 385795897, now seen corresponding path program 1 times [2019-10-22 08:55:52,326 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:52,326 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763223230] [2019-10-22 08:55:52,327 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:52,327 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:52,327 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:52,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:52,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:52,455 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:52,455 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763223230] [2019-10-22 08:55:52,455 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:52,455 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-22 08:55:52,456 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73355267] [2019-10-22 08:55:52,456 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 08:55:52,456 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:52,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 08:55:52,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:55:52,457 INFO L87 Difference]: Start difference. First operand 85 states and 96 transitions. Second operand 7 states. [2019-10-22 08:55:52,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:52,792 INFO L93 Difference]: Finished difference Result 106 states and 116 transitions. [2019-10-22 08:55:52,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 08:55:52,793 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2019-10-22 08:55:52,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:52,794 INFO L225 Difference]: With dead ends: 106 [2019-10-22 08:55:52,794 INFO L226 Difference]: Without dead ends: 106 [2019-10-22 08:55:52,794 INFO L600 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 [2019-10-22 08:55:52,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2019-10-22 08:55:52,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 76. [2019-10-22 08:55:52,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2019-10-22 08:55:52,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 85 transitions. [2019-10-22 08:55:52,800 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 85 transitions. Word has length 19 [2019-10-22 08:55:52,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:52,800 INFO L462 AbstractCegarLoop]: Abstraction has 76 states and 85 transitions. [2019-10-22 08:55:52,818 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 08:55:52,819 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 85 transitions. [2019-10-22 08:55:52,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-22 08:55:52,819 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:52,819 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:52,820 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr15REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION]=== [2019-10-22 08:55:52,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:52,820 INFO L82 PathProgramCache]: Analyzing trace with hash -2033424545, now seen corresponding path program 1 times [2019-10-22 08:55:52,820 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:52,820 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463390194] [2019-10-22 08:55:52,820 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:52,820 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:52,821 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:52,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:52,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:52,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:52,906 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463390194] [2019-10-22 08:55:52,906 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:52,906 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 08:55:52,906 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015925129] [2019-10-22 08:55:52,906 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 08:55:52,907 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:52,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 08:55:52,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:55:52,907 INFO L87 Difference]: Start difference. First operand 76 states and 85 transitions. Second operand 7 states. [2019-10-22 08:55:53,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:53,063 INFO L93 Difference]: Finished difference Result 101 states and 108 transitions. [2019-10-22 08:55:53,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 08:55:53,063 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2019-10-22 08:55:53,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:53,064 INFO L225 Difference]: With dead ends: 101 [2019-10-22 08:55:53,064 INFO L226 Difference]: Without dead ends: 101 [2019-10-22 08:55:53,064 INFO L600 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 [2019-10-22 08:55:53,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2019-10-22 08:55:53,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 78. [2019-10-22 08:55:53,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2019-10-22 08:55:53,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 87 transitions. [2019-10-22 08:55:53,069 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 87 transitions. Word has length 21 [2019-10-22 08:55:53,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:53,069 INFO L462 AbstractCegarLoop]: Abstraction has 78 states and 87 transitions. [2019-10-22 08:55:53,069 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 08:55:53,070 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 87 transitions. [2019-10-22 08:55:53,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-22 08:55:53,070 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:53,071 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:53,071 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr15REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION]=== [2019-10-22 08:55:53,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:53,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1965728522, now seen corresponding path program 1 times [2019-10-22 08:55:53,071 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:53,071 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513129732] [2019-10-22 08:55:53,071 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:53,072 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:53,072 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:53,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:53,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:53,134 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:53,135 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513129732] [2019-10-22 08:55:53,135 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:53,135 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-22 08:55:53,135 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491018590] [2019-10-22 08:55:53,135 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 08:55:53,135 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:53,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 08:55:53,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:55:53,136 INFO L87 Difference]: Start difference. First operand 78 states and 87 transitions. Second operand 7 states. [2019-10-22 08:55:53,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:53,346 INFO L93 Difference]: Finished difference Result 86 states and 93 transitions. [2019-10-22 08:55:53,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 08:55:53,346 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2019-10-22 08:55:53,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:53,347 INFO L225 Difference]: With dead ends: 86 [2019-10-22 08:55:53,347 INFO L226 Difference]: Without dead ends: 86 [2019-10-22 08:55:53,347 INFO L600 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 [2019-10-22 08:55:53,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2019-10-22 08:55:53,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 76. [2019-10-22 08:55:53,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2019-10-22 08:55:53,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 85 transitions. [2019-10-22 08:55:53,352 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 85 transitions. Word has length 21 [2019-10-22 08:55:53,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:53,352 INFO L462 AbstractCegarLoop]: Abstraction has 76 states and 85 transitions. [2019-10-22 08:55:53,352 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 08:55:53,352 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 85 transitions. [2019-10-22 08:55:53,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-22 08:55:53,353 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:53,353 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:53,353 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr15REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION]=== [2019-10-22 08:55:53,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:53,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1965728523, now seen corresponding path program 1 times [2019-10-22 08:55:53,353 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:53,353 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281693280] [2019-10-22 08:55:53,354 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:53,354 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:53,354 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:53,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:53,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:53,407 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:53,407 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281693280] [2019-10-22 08:55:53,407 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:53,407 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-22 08:55:53,407 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388819265] [2019-10-22 08:55:53,408 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 08:55:53,408 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:53,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 08:55:53,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:55:53,408 INFO L87 Difference]: Start difference. First operand 76 states and 85 transitions. Second operand 7 states. [2019-10-22 08:55:53,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:53,662 INFO L93 Difference]: Finished difference Result 83 states and 91 transitions. [2019-10-22 08:55:53,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 08:55:53,663 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2019-10-22 08:55:53,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:53,663 INFO L225 Difference]: With dead ends: 83 [2019-10-22 08:55:53,664 INFO L226 Difference]: Without dead ends: 83 [2019-10-22 08:55:53,664 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2019-10-22 08:55:53,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2019-10-22 08:55:53,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 64. [2019-10-22 08:55:53,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2019-10-22 08:55:53,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2019-10-22 08:55:53,667 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 21 [2019-10-22 08:55:53,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:53,668 INFO L462 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2019-10-22 08:55:53,668 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 08:55:53,668 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2019-10-22 08:55:53,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-22 08:55:53,668 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:53,668 INFO L380 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] [2019-10-22 08:55:53,668 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr15REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr24ENSURES_VIOLATIONMEMORY_LEAK, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION]=== [2019-10-22 08:55:53,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:53,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1386723445, now seen corresponding path program 1 times [2019-10-22 08:55:53,669 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:53,669 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393615282] [2019-10-22 08:55:53,669 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:53,669 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:53,669 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:53,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:53,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:53,724 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:55:53,725 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 08:55:53,735 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2019-10-22 08:55:53,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:55:53 BoogieIcfgContainer [2019-10-22 08:55:53,746 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:55:53,747 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:55:53,747 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:55:53,747 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:55:53,747 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:50" (3/4) ... [2019-10-22 08:55:53,749 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 08:55:53,752 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2019-10-22 08:55:53,797 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_445e766a-c161-4e99-9ac6-cd51d7bef123/bin/uautomizer/witness.graphml [2019-10-22 08:55:53,797 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:55:53,799 INFO L168 Benchmark]: Toolchain (without parser) took 4511.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 192.4 MB). Free memory was 946.0 MB in the beginning and 1.0 GB in the end (delta: -85.9 MB). Peak memory consumption was 106.5 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:53,799 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:55:53,800 INFO L168 Benchmark]: CACSL2BoogieTranslator took 477.85 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 106.4 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -136.7 MB). Peak memory consumption was 26.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:53,801 INFO L168 Benchmark]: Boogie Preprocessor took 92.49 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:53,801 INFO L168 Benchmark]: RCFGBuilder took 700.67 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 57.7 MB). Peak memory consumption was 57.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:53,802 INFO L168 Benchmark]: TraceAbstraction took 3186.11 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 86.0 MB). Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: -15.0 MB). Peak memory consumption was 71.0 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:53,802 INFO L168 Benchmark]: Witness Printer took 50.41 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:53,804 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 477.85 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 106.4 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -136.7 MB). Peak memory consumption was 26.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 92.49 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 700.67 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 57.7 MB). Peak memory consumption was 57.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3186.11 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 86.0 MB). Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: -15.0 MB). Peak memory consumption was 71.0 MB. Max. memory is 11.5 GB. * Witness Printer took 50.41 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. 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: 520]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L521] List a = (List) malloc(sizeof(struct node)); VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}] [L522] COND FALSE !(a == 0) VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}] [L523] List t; [L524] List p = a; VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L525] COND FALSE !(__VERIFIER_nondet_int()) [L532] COND FALSE !(__VERIFIER_nondet_int()) [L539] p->h = 3 VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L540] p = a VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L541] EXPR p->h VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3] [L541] COND FALSE !(p->h == 2) [L543] EXPR p->h VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3] [L543] COND FALSE !(p->h == 1) [L545] EXPR p->h VAL [a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3] [L545] COND FALSE !(p->h != 3) [L547] return 0; VAL [\result=0, a={-1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 88 locations, 25 error locations. Result: UNSAFE, OverallTime: 3.1s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 399 SDtfs, 589 SDslu, 748 SDs, 0 SdLazy, 1643 SolverSat, 112 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 84 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=85occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 146 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 175 NumberOfCodeBlocks, 175 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 144 ConstructedInterpolants, 0 QuantifiedInterpolants, 10156 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...