./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/forester-heap/sll-circular-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 6b5699aa Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_c170cff5-4806-4ded-89df-d121e2a8f3f8/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_c170cff5-4806-4ded-89df-d121e2a8f3f8/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c170cff5-4806-4ded-89df-d121e2a8f3f8/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c170cff5-4806-4ded-89df-d121e2a8f3f8/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-circular-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_c170cff5-4806-4ded-89df-d121e2a8f3f8/bin/uautomizer/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c170cff5-4806-4ded-89df-d121e2a8f3f8/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 b651d63eb42259dfd3a213a6671e4c58ee528ad0 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: incompatible size --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-6b5699a [2019-11-25 08:45:29,827 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:45:29,828 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:45:29,838 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:45:29,838 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:45:29,839 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:45:29,840 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:45:29,842 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:45:29,844 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:45:29,845 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:45:29,845 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:45:29,846 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:45:29,847 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:45:29,848 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:45:29,848 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:45:29,850 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:45:29,850 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:45:29,851 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:45:29,853 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:45:29,855 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:45:29,857 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:45:29,858 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:45:29,859 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:45:29,860 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:45:29,865 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:45:29,865 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:45:29,866 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:45:29,867 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:45:29,867 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:45:29,868 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:45:29,868 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:45:29,869 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:45:29,870 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:45:29,871 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:45:29,872 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:45:29,873 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:45:29,873 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:45:29,874 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:45:29,874 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:45:29,875 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:45:29,876 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:45:29,877 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c170cff5-4806-4ded-89df-d121e2a8f3f8/bin/uautomizer/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf [2019-11-25 08:45:29,909 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:45:29,910 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:45:29,911 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:45:29,911 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:45:29,912 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:45:29,912 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:45:29,912 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:45:29,912 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-25 08:45:29,913 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:45:29,913 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:45:29,914 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:45:29,914 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-25 08:45:29,915 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-25 08:45:29,915 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:45:29,915 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-25 08:45:29,915 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-25 08:45:29,916 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-25 08:45:29,916 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:45:29,916 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:45:29,916 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:45:29,917 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:45:29,917 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:45:29,917 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:45:29,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:45:29,918 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:45:29,918 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:45:29,918 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-25 08:45:29,918 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-25 08:45:29,919 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-25 08:45:29,919 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c170cff5-4806-4ded-89df-d121e2a8f3f8/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 -> b651d63eb42259dfd3a213a6671e4c58ee528ad0 [2019-11-25 08:45:30,093 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:45:30,109 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:45:30,112 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:45:30,118 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:45:30,118 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:45:30,119 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c170cff5-4806-4ded-89df-d121e2a8f3f8/bin/uautomizer/../../sv-benchmarks/c/forester-heap/sll-circular-2.i [2019-11-25 08:45:30,182 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c170cff5-4806-4ded-89df-d121e2a8f3f8/bin/uautomizer/data/258fcf476/cbd8ee1d432a4e57932840cd980366b8/FLAG8abb83c34 [2019-11-25 08:45:30,649 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:45:30,649 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c170cff5-4806-4ded-89df-d121e2a8f3f8/sv-benchmarks/c/forester-heap/sll-circular-2.i [2019-11-25 08:45:30,661 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c170cff5-4806-4ded-89df-d121e2a8f3f8/bin/uautomizer/data/258fcf476/cbd8ee1d432a4e57932840cd980366b8/FLAG8abb83c34 [2019-11-25 08:45:31,009 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c170cff5-4806-4ded-89df-d121e2a8f3f8/bin/uautomizer/data/258fcf476/cbd8ee1d432a4e57932840cd980366b8 [2019-11-25 08:45:31,011 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:45:31,012 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-25 08:45:31,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:45:31,013 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:45:31,016 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:45:31,017 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:45:31" (1/1) ... [2019-11-25 08:45:31,020 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@648ac8dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:31, skipping insertion in model container [2019-11-25 08:45:31,020 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:45:31" (1/1) ... [2019-11-25 08:45:31,028 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:45:31,070 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:45:31,488 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:45:31,504 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:45:31,542 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:45:31,598 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:45:31,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:31 WrapperNode [2019-11-25 08:45:31,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:45:31,600 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:45:31,600 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:45:31,601 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:45:31,612 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:31" (1/1) ... [2019-11-25 08:45:31,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:31" (1/1) ... [2019-11-25 08:45:31,629 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:31" (1/1) ... [2019-11-25 08:45:31,630 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:31" (1/1) ... [2019-11-25 08:45:31,658 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:31" (1/1) ... [2019-11-25 08:45:31,663 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:31" (1/1) ... [2019-11-25 08:45:31,666 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:31" (1/1) ... [2019-11-25 08:45:31,674 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:45:31,674 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:45:31,674 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:45:31,675 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:45:31,676 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c170cff5-4806-4ded-89df-d121e2a8f3f8/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 [2019-11-25 08:45:31,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-25 08:45:31,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:45:31,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2019-11-25 08:45:31,734 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-25 08:45:31,734 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-25 08:45:31,734 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-25 08:45:31,734 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-25 08:45:31,735 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-25 08:45:31,735 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-25 08:45:31,736 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-25 08:45:31,736 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-25 08:45:31,736 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-25 08:45:31,737 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-25 08:45:31,737 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-25 08:45:31,737 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-25 08:45:31,738 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-25 08:45:31,738 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-25 08:45:31,738 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-25 08:45:31,739 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-25 08:45:31,739 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-25 08:45:31,739 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-25 08:45:31,739 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-25 08:45:31,740 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-25 08:45:31,740 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-25 08:45:31,740 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-25 08:45:31,741 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-25 08:45:31,741 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-25 08:45:31,741 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-25 08:45:31,741 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-25 08:45:31,742 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-25 08:45:31,742 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-25 08:45:31,742 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-25 08:45:31,742 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-25 08:45:31,742 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-25 08:45:31,742 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-25 08:45:31,743 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-25 08:45:31,743 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-25 08:45:31,743 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-25 08:45:31,743 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-25 08:45:31,743 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-25 08:45:31,744 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-25 08:45:31,744 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-25 08:45:31,744 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-25 08:45:31,744 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-25 08:45:31,744 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-25 08:45:31,744 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-25 08:45:31,745 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-25 08:45:31,745 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-25 08:45:31,745 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-25 08:45:31,745 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-25 08:45:31,745 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-25 08:45:31,745 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-25 08:45:31,746 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-25 08:45:31,746 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-25 08:45:31,746 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-25 08:45:31,746 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-25 08:45:31,746 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-25 08:45:31,746 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-25 08:45:31,747 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-11-25 08:45:31,747 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-25 08:45:31,747 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-25 08:45:31,747 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-25 08:45:31,748 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-25 08:45:31,748 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-25 08:45:31,748 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-25 08:45:31,748 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-25 08:45:31,748 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-25 08:45:31,749 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-25 08:45:31,749 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-25 08:45:31,750 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-25 08:45:31,750 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-25 08:45:31,750 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-25 08:45:31,751 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-25 08:45:31,751 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-25 08:45:31,752 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-25 08:45:31,752 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-25 08:45:31,753 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-25 08:45:31,753 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-25 08:45:31,753 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-25 08:45:31,753 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-25 08:45:31,753 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-25 08:45:31,754 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-25 08:45:31,754 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-25 08:45:31,755 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-25 08:45:31,755 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-25 08:45:31,755 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-25 08:45:31,755 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-25 08:45:31,755 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-25 08:45:31,755 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-25 08:45:31,756 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-25 08:45:31,756 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-25 08:45:31,756 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-25 08:45:31,756 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-25 08:45:31,756 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-25 08:45:31,756 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-25 08:45:31,757 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-25 08:45:31,757 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-25 08:45:31,757 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-25 08:45:31,757 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-25 08:45:31,757 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-25 08:45:31,757 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-25 08:45:31,758 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-25 08:45:31,758 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-25 08:45:31,758 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-25 08:45:31,758 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-25 08:45:31,758 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-25 08:45:31,758 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-25 08:45:31,759 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-25 08:45:31,759 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-25 08:45:31,759 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-25 08:45:31,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-25 08:45:31,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-25 08:45:31,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-25 08:45:31,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-25 08:45:31,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-25 08:45:31,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:45:31,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-25 08:45:31,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:45:31,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2019-11-25 08:45:32,664 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:45:32,664 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-25 08:45:32,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:45:32 BoogieIcfgContainer [2019-11-25 08:45:32,665 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:45:32,666 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:45:32,666 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:45:32,669 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:45:32,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:45:31" (1/3) ... [2019-11-25 08:45:32,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5051b0c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:45:32, skipping insertion in model container [2019-11-25 08:45:32,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:45:31" (2/3) ... [2019-11-25 08:45:32,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5051b0c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:45:32, skipping insertion in model container [2019-11-25 08:45:32,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:45:32" (3/3) ... [2019-11-25 08:45:32,676 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-circular-2.i [2019-11-25 08:45:32,685 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:45:32,693 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 43 error locations. [2019-11-25 08:45:32,704 INFO L249 AbstractCegarLoop]: Starting to check reachability of 43 error locations. [2019-11-25 08:45:32,722 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:45:32,724 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-25 08:45:32,724 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:45:32,724 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:45:32,724 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:45:32,724 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:45:32,724 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:45:32,725 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:45:32,761 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states. [2019-11-25 08:45:32,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-25 08:45:32,772 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:32,773 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:45:32,773 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2019-11-25 08:45:32,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:32,779 INFO L82 PathProgramCache]: Analyzing trace with hash -202404971, now seen corresponding path program 1 times [2019-11-25 08:45:32,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:45:32,789 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1122449416] [2019-11-25 08:45:32,790 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c170cff5-4806-4ded-89df-d121e2a8f3f8/bin/uautomizer/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:45:32,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:32,971 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-25 08:45:32,976 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:45:33,037 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-25 08:45:33,037 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:45:33,043 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:45:33,043 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:45:33,043 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-25 08:45:33,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:33,059 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:45:33,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:33,071 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1122449416] [2019-11-25 08:45:33,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:45:33,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-25 08:45:33,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501688191] [2019-11-25 08:45:33,075 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:45:33,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:45:33,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:45:33,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:45:33,091 INFO L87 Difference]: Start difference. First operand 98 states. Second operand 3 states. [2019-11-25 08:45:33,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:33,343 INFO L93 Difference]: Finished difference Result 104 states and 111 transitions. [2019-11-25 08:45:33,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:45:33,345 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-11-25 08:45:33,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:33,355 INFO L225 Difference]: With dead ends: 104 [2019-11-25 08:45:33,355 INFO L226 Difference]: Without dead ends: 101 [2019-11-25 08:45:33,357 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:45:33,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2019-11-25 08:45:33,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 91. [2019-11-25 08:45:33,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2019-11-25 08:45:33,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 97 transitions. [2019-11-25 08:45:33,409 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 97 transitions. Word has length 7 [2019-11-25 08:45:33,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:33,410 INFO L462 AbstractCegarLoop]: Abstraction has 91 states and 97 transitions. [2019-11-25 08:45:33,410 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:45:33,410 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 97 transitions. [2019-11-25 08:45:33,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-25 08:45:33,411 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:33,411 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:45:33,615 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:45:33,615 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2019-11-25 08:45:33,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:33,616 INFO L82 PathProgramCache]: Analyzing trace with hash -202404970, now seen corresponding path program 1 times [2019-11-25 08:45:33,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:45:33,617 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [454034504] [2019-11-25 08:45:33,617 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c170cff5-4806-4ded-89df-d121e2a8f3f8/bin/uautomizer/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:45:33,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:33,777 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:45:33,778 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:45:33,791 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-25 08:45:33,791 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:45:33,798 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:45:33,799 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:45:33,799 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-25 08:45:33,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:33,809 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:45:33,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:33,850 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [454034504] [2019-11-25 08:45:33,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:45:33,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-25 08:45:33,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622458299] [2019-11-25 08:45:33,852 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:45:33,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:45:33,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:45:33,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:45:33,852 INFO L87 Difference]: Start difference. First operand 91 states and 97 transitions. Second operand 4 states. [2019-11-25 08:45:34,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:34,114 INFO L93 Difference]: Finished difference Result 99 states and 105 transitions. [2019-11-25 08:45:34,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:45:34,116 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-25 08:45:34,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:34,117 INFO L225 Difference]: With dead ends: 99 [2019-11-25 08:45:34,117 INFO L226 Difference]: Without dead ends: 99 [2019-11-25 08:45:34,118 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:45:34,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2019-11-25 08:45:34,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 87. [2019-11-25 08:45:34,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2019-11-25 08:45:34,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 93 transitions. [2019-11-25 08:45:34,131 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 93 transitions. Word has length 7 [2019-11-25 08:45:34,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:34,131 INFO L462 AbstractCegarLoop]: Abstraction has 87 states and 93 transitions. [2019-11-25 08:45:34,131 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:45:34,132 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 93 transitions. [2019-11-25 08:45:34,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-25 08:45:34,132 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:34,133 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:45:34,336 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:45:34,337 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2019-11-25 08:45:34,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:34,337 INFO L82 PathProgramCache]: Analyzing trace with hash 325375308, now seen corresponding path program 1 times [2019-11-25 08:45:34,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:45:34,338 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1918581884] [2019-11-25 08:45:34,338 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c170cff5-4806-4ded-89df-d121e2a8f3f8/bin/uautomizer/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:45:34,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:34,513 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:45:34,514 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:45:34,519 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-25 08:45:34,520 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:45:34,522 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:45:34,522 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:45:34,523 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-25 08:45:34,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:34,540 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:45:34,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:34,561 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1918581884] [2019-11-25 08:45:34,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:45:34,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-25 08:45:34,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986126773] [2019-11-25 08:45:34,562 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:45:34,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:45:34,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:45:34,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:45:34,562 INFO L87 Difference]: Start difference. First operand 87 states and 93 transitions. Second operand 4 states. [2019-11-25 08:45:34,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:34,839 INFO L93 Difference]: Finished difference Result 85 states and 92 transitions. [2019-11-25 08:45:34,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:45:34,839 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-25 08:45:34,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:34,840 INFO L225 Difference]: With dead ends: 85 [2019-11-25 08:45:34,840 INFO L226 Difference]: Without dead ends: 85 [2019-11-25 08:45:34,841 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:45:34,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2019-11-25 08:45:34,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 76. [2019-11-25 08:45:34,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2019-11-25 08:45:34,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 82 transitions. [2019-11-25 08:45:34,848 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 82 transitions. Word has length 11 [2019-11-25 08:45:34,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:34,849 INFO L462 AbstractCegarLoop]: Abstraction has 76 states and 82 transitions. [2019-11-25 08:45:34,849 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:45:34,849 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 82 transitions. [2019-11-25 08:45:34,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-25 08:45:34,849 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:34,849 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:45:35,050 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:45:35,050 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2019-11-25 08:45:35,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:35,051 INFO L82 PathProgramCache]: Analyzing trace with hash 325375309, now seen corresponding path program 1 times [2019-11-25 08:45:35,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:45:35,051 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [4729357] [2019-11-25 08:45:35,052 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c170cff5-4806-4ded-89df-d121e2a8f3f8/bin/uautomizer/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:45:35,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:35,257 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-25 08:45:35,258 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:45:35,270 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-25 08:45:35,271 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:45:35,277 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:45:35,277 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:45:35,278 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-25 08:45:35,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:35,303 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:45:35,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:35,405 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [4729357] [2019-11-25 08:45:35,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:45:35,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-11-25 08:45:35,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200952513] [2019-11-25 08:45:35,406 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-25 08:45:35,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:45:35,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:45:35,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:45:35,407 INFO L87 Difference]: Start difference. First operand 76 states and 82 transitions. Second operand 6 states. [2019-11-25 08:45:35,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:35,999 INFO L93 Difference]: Finished difference Result 94 states and 101 transitions. [2019-11-25 08:45:36,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-25 08:45:36,000 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-25 08:45:36,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:36,001 INFO L225 Difference]: With dead ends: 94 [2019-11-25 08:45:36,001 INFO L226 Difference]: Without dead ends: 94 [2019-11-25 08:45:36,002 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2019-11-25 08:45:36,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2019-11-25 08:45:36,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 79. [2019-11-25 08:45:36,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2019-11-25 08:45:36,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 86 transitions. [2019-11-25 08:45:36,008 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 86 transitions. Word has length 11 [2019-11-25 08:45:36,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:36,008 INFO L462 AbstractCegarLoop]: Abstraction has 79 states and 86 transitions. [2019-11-25 08:45:36,008 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-25 08:45:36,008 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 86 transitions. [2019-11-25 08:45:36,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-25 08:45:36,009 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:36,009 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:45:36,212 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:45:36,212 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2019-11-25 08:45:36,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:36,212 INFO L82 PathProgramCache]: Analyzing trace with hash -484985162, now seen corresponding path program 1 times [2019-11-25 08:45:36,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:45:36,213 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1667425046] [2019-11-25 08:45:36,213 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c170cff5-4806-4ded-89df-d121e2a8f3f8/bin/uautomizer/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:45:36,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:36,381 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-25 08:45:36,382 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:45:36,426 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:45:36,427 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 30 [2019-11-25 08:45:36,429 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:45:36,456 INFO L567 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2019-11-25 08:45:36,457 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-25 08:45:36,457 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:14, output treesize:11 [2019-11-25 08:45:36,480 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-25 08:45:36,481 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:45:36,492 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:45:36,493 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:45:36,493 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:11 [2019-11-25 08:45:36,516 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2019-11-25 08:45:36,517 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:45:36,523 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:45:36,523 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:45:36,523 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:7 [2019-11-25 08:45:36,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:36,543 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:45:36,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:36,559 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1667425046] [2019-11-25 08:45:36,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:45:36,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 6 [2019-11-25 08:45:36,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548823829] [2019-11-25 08:45:36,560 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-25 08:45:36,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:45:36,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-25 08:45:36,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-25 08:45:36,561 INFO L87 Difference]: Start difference. First operand 79 states and 86 transitions. Second operand 7 states. [2019-11-25 08:45:37,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:37,266 INFO L93 Difference]: Finished difference Result 128 states and 138 transitions. [2019-11-25 08:45:37,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-25 08:45:37,267 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2019-11-25 08:45:37,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:37,268 INFO L225 Difference]: With dead ends: 128 [2019-11-25 08:45:37,268 INFO L226 Difference]: Without dead ends: 128 [2019-11-25 08:45:37,268 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-11-25 08:45:37,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2019-11-25 08:45:37,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 78. [2019-11-25 08:45:37,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2019-11-25 08:45:37,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 85 transitions. [2019-11-25 08:45:37,276 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 85 transitions. Word has length 14 [2019-11-25 08:45:37,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:37,276 INFO L462 AbstractCegarLoop]: Abstraction has 78 states and 85 transitions. [2019-11-25 08:45:37,276 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-25 08:45:37,276 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 85 transitions. [2019-11-25 08:45:37,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-25 08:45:37,277 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:37,278 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:45:37,478 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:45:37,478 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2019-11-25 08:45:37,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:37,479 INFO L82 PathProgramCache]: Analyzing trace with hash -484985161, now seen corresponding path program 1 times [2019-11-25 08:45:37,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:45:37,479 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [217720005] [2019-11-25 08:45:37,479 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c170cff5-4806-4ded-89df-d121e2a8f3f8/bin/uautomizer/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:45:37,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:37,648 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-25 08:45:37,650 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:45:37,659 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-25 08:45:37,660 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:45:37,665 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:45:37,665 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:45:37,665 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-25 08:45:37,679 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-25 08:45:37,680 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:45:37,688 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:45:37,692 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-25 08:45:37,692 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-25 08:45:37,699 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:45:37,700 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:45:37,700 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:30, output treesize:17 [2019-11-25 08:45:37,716 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2019-11-25 08:45:37,717 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:45:37,724 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:45:37,727 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-11-25 08:45:37,727 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-25 08:45:37,732 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:45:37,732 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:45:37,732 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:31, output treesize:11 [2019-11-25 08:45:37,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:37,769 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:45:37,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:37,954 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [217720005] [2019-11-25 08:45:37,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:45:37,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2019-11-25 08:45:37,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909943461] [2019-11-25 08:45:37,955 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-25 08:45:37,955 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:45:37,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-25 08:45:37,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-11-25 08:45:37,955 INFO L87 Difference]: Start difference. First operand 78 states and 85 transitions. Second operand 10 states. [2019-11-25 08:45:39,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:39,182 INFO L93 Difference]: Finished difference Result 119 states and 128 transitions. [2019-11-25 08:45:39,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-25 08:45:39,183 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2019-11-25 08:45:39,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:39,184 INFO L225 Difference]: With dead ends: 119 [2019-11-25 08:45:39,184 INFO L226 Difference]: Without dead ends: 119 [2019-11-25 08:45:39,184 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2019-11-25 08:45:39,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2019-11-25 08:45:39,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 67. [2019-11-25 08:45:39,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2019-11-25 08:45:39,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 73 transitions. [2019-11-25 08:45:39,189 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 73 transitions. Word has length 14 [2019-11-25 08:45:39,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:39,189 INFO L462 AbstractCegarLoop]: Abstraction has 67 states and 73 transitions. [2019-11-25 08:45:39,189 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-25 08:45:39,189 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 73 transitions. [2019-11-25 08:45:39,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-25 08:45:39,189 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:39,190 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:45:39,390 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:45:39,390 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2019-11-25 08:45:39,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:39,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1755284227, now seen corresponding path program 1 times [2019-11-25 08:45:39,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:45:39,391 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1014664741] [2019-11-25 08:45:39,391 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c170cff5-4806-4ded-89df-d121e2a8f3f8/bin/uautomizer/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:45:39,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:39,567 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-25 08:45:39,569 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:45:39,579 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-25 08:45:39,580 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:45:39,592 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:45:39,593 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:45:39,593 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-25 08:45:39,612 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-25 08:45:39,612 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:45:39,629 INFO L567 ElimStorePlain]: treesize reduction 7, result has 69.6 percent of original size [2019-11-25 08:45:39,629 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:45:39,629 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:16 [2019-11-25 08:45:39,660 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-25 08:45:39,661 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2019-11-25 08:45:39,662 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:45:39,670 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:45:39,670 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:45:39,670 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:37, output treesize:18 [2019-11-25 08:45:39,694 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-25 08:45:39,695 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2019-11-25 08:45:39,695 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:45:39,701 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:45:39,702 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:45:39,702 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:37, output treesize:18 [2019-11-25 08:45:39,708 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-11-25 08:45:39,708 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:45:39,712 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:45:39,713 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:45:39,713 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:5 [2019-11-25 08:45:39,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:39,726 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:45:39,743 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-25 08:45:39,747 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:45:39,748 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-25 08:45:39,748 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:21 [2019-11-25 08:45:41,804 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-25 08:45:41,806 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:45:41,806 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-25 08:45:41,807 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:14 [2019-11-25 08:45:41,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:41,822 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1014664741] [2019-11-25 08:45:41,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:45:41,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 8 [2019-11-25 08:45:41,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912412806] [2019-11-25 08:45:41,823 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-25 08:45:41,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:45:41,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-25 08:45:41,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=49, Unknown=1, NotChecked=0, Total=72 [2019-11-25 08:45:41,824 INFO L87 Difference]: Start difference. First operand 67 states and 73 transitions. Second operand 9 states. [2019-11-25 08:45:44,238 WARN L192 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 29 [2019-11-25 08:45:44,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:44,511 INFO L93 Difference]: Finished difference Result 117 states and 128 transitions. [2019-11-25 08:45:44,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-25 08:45:44,512 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2019-11-25 08:45:44,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:44,513 INFO L225 Difference]: With dead ends: 117 [2019-11-25 08:45:44,513 INFO L226 Difference]: Without dead ends: 117 [2019-11-25 08:45:44,513 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=66, Invalid=115, Unknown=1, NotChecked=0, Total=182 [2019-11-25 08:45:44,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2019-11-25 08:45:44,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 74. [2019-11-25 08:45:44,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2019-11-25 08:45:44,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 82 transitions. [2019-11-25 08:45:44,519 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 82 transitions. Word has length 16 [2019-11-25 08:45:44,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:44,519 INFO L462 AbstractCegarLoop]: Abstraction has 74 states and 82 transitions. [2019-11-25 08:45:44,519 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-25 08:45:44,519 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 82 transitions. [2019-11-25 08:45:44,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-25 08:45:44,520 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:44,520 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:45:44,722 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:45:44,723 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2019-11-25 08:45:44,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:44,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1755284228, now seen corresponding path program 1 times [2019-11-25 08:45:44,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:45:44,724 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1606240780] [2019-11-25 08:45:44,724 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c170cff5-4806-4ded-89df-d121e2a8f3f8/bin/uautomizer/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:45:44,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:44,918 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-25 08:45:44,920 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:45:44,930 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-25 08:45:44,931 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:45:44,938 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:45:44,939 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:45:44,939 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-25 08:45:44,955 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-25 08:45:44,955 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:45:44,971 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:45:44,975 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-25 08:45:44,976 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-25 08:45:44,992 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:45:44,993 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:45:44,993 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:33, output treesize:25 [2019-11-25 08:45:45,034 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-25 08:45:45,035 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2019-11-25 08:45:45,035 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:45:45,062 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:45:45,067 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-25 08:45:45,068 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2019-11-25 08:45:45,068 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-25 08:45:45,088 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:45:45,089 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:45:45,089 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:63, output treesize:25 [2019-11-25 08:45:45,128 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-25 08:45:45,130 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2019-11-25 08:45:45,131 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:45:45,162 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:45:45,167 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-25 08:45:45,168 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2019-11-25 08:45:45,169 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-25 08:45:45,181 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:45:45,181 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:45:45,181 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:63, output treesize:25 [2019-11-25 08:45:45,194 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-11-25 08:45:45,194 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:45:45,206 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:45:45,210 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-11-25 08:45:45,210 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-25 08:45:45,221 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:45:45,221 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:45:45,222 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:36, output treesize:11 [2019-11-25 08:45:45,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:45,265 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:45:45,429 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-25 08:45:45,444 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-25 08:45:45,452 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-25 08:45:45,459 INFO L496 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-25 08:45:45,568 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2019-11-25 08:45:45,569 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:45:45,577 INFO L496 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-25 08:45:45,594 INFO L496 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2019-11-25 08:45:45,603 INFO L496 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2019-11-25 08:45:45,656 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:45:45,657 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 4 dim-0 vars, and 3 xjuncts. [2019-11-25 08:45:45,657 INFO L221 ElimStorePlain]: Needed 7 recursive calls to eliminate 2 variables, input treesize:163, output treesize:90 [2019-11-25 08:45:46,016 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-25 08:45:46,027 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:45:46,045 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-25 08:45:46,051 INFO L496 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-25 08:45:46,133 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:45:46,142 INFO L496 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-25 08:45:46,151 INFO L496 ElimStorePlain]: Start of recursive call 6: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-25 08:45:46,156 INFO L496 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-25 08:45:46,176 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:45:46,177 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 4 dim-0 vars, and 3 xjuncts. [2019-11-25 08:45:46,177 INFO L221 ElimStorePlain]: Needed 7 recursive calls to eliminate 2 variables, input treesize:163, output treesize:65 [2019-11-25 08:45:46,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:46,299 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1606240780] [2019-11-25 08:45:46,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:45:46,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2019-11-25 08:45:46,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812452631] [2019-11-25 08:45:46,300 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-25 08:45:46,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:45:46,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-25 08:45:46,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-11-25 08:45:46,301 INFO L87 Difference]: Start difference. First operand 74 states and 82 transitions. Second operand 12 states. [2019-11-25 08:45:47,445 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 37 [2019-11-25 08:45:48,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:45:48,171 INFO L93 Difference]: Finished difference Result 142 states and 153 transitions. [2019-11-25 08:45:48,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-25 08:45:48,172 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 16 [2019-11-25 08:45:48,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:45:48,174 INFO L225 Difference]: With dead ends: 142 [2019-11-25 08:45:48,174 INFO L226 Difference]: Without dead ends: 142 [2019-11-25 08:45:48,174 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2019-11-25 08:45:48,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2019-11-25 08:45:48,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 76. [2019-11-25 08:45:48,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2019-11-25 08:45:48,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 84 transitions. [2019-11-25 08:45:48,189 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 84 transitions. Word has length 16 [2019-11-25 08:45:48,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:45:48,189 INFO L462 AbstractCegarLoop]: Abstraction has 76 states and 84 transitions. [2019-11-25 08:45:48,189 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-25 08:45:48,189 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 84 transitions. [2019-11-25 08:45:48,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-25 08:45:48,190 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:45:48,191 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:45:48,400 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:45:48,401 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr37ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr42ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr38ASSERT_VIOLATIONMEMORY_FREE, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr35REQUIRES_VIOLATION, mainErr39ASSERT_VIOLATIONMEMORY_FREE, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2019-11-25 08:45:48,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:45:48,402 INFO L82 PathProgramCache]: Analyzing trace with hash 445670237, now seen corresponding path program 1 times [2019-11-25 08:45:48,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:45:48,403 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1093817534] [2019-11-25 08:45:48,403 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c170cff5-4806-4ded-89df-d121e2a8f3f8/bin/uautomizer/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:45:48,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:45:48,672 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-25 08:45:48,674 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:45:48,685 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-25 08:45:48,685 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:45:48,703 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:45:48,707 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-25 08:45:48,707 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-25 08:45:48,720 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:45:48,720 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:45:48,720 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2019-11-25 08:45:48,741 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-25 08:45:48,741 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:45:48,767 INFO L567 ElimStorePlain]: treesize reduction 7, result has 76.7 percent of original size [2019-11-25 08:45:48,768 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:45:48,768 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:34, output treesize:23 [2019-11-25 08:45:48,795 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-25 08:45:48,796 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2019-11-25 08:45:48,797 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:45:48,813 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:45:48,814 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:45:48,814 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:42, output treesize:23 [2019-11-25 08:45:48,854 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-25 08:45:48,855 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2019-11-25 08:45:48,856 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:45:48,873 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:45:48,874 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:45:48,874 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:42, output treesize:23 [2019-11-25 08:45:48,884 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2019-11-25 08:45:48,884 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:45:48,898 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:45:48,899 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-25 08:45:48,899 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:34, output treesize:27 [2019-11-25 08:45:49,064 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 14 [2019-11-25 08:45:49,065 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:45:49,135 INFO L567 ElimStorePlain]: treesize reduction 12, result has 78.6 percent of original size [2019-11-25 08:45:49,145 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-25 08:45:49,152 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:45:49,152 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2019-11-25 08:45:49,152 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-25 08:45:49,175 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:45:49,178 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:45:49,178 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:73, output treesize:7 [2019-11-25 08:45:49,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:45:49,196 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:45:49,478 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 44 [2019-11-25 08:45:49,478 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-25 08:45:49,502 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:45:49,503 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-25 08:45:49,503 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:68, output treesize:44 [2019-11-25 08:45:49,557 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-25 08:45:49,608 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:45:49,609 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-25 08:45:49,609 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:64, output treesize:76 [2019-11-25 08:45:54,128 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:45:54,128 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: incompatible size at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.analyzeCosts(ArrayIndexBasedCostEstimation.java:211) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.computeCostEstimation(ArrayIndexBasedCostEstimation.java:152) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.(ArrayIndexBasedCostEstimation.java:64) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.computeCostEstimation(ElimStorePlain.java:519) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:390) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:246) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:419) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:291) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:334) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:177) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:333) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-25 08:45:54,131 INFO L168 Benchmark]: Toolchain (without parser) took 23119.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 184.5 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -185.6 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:45:54,132 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:45:54,132 INFO L168 Benchmark]: CACSL2BoogieTranslator took 587.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -185.4 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. [2019-11-25 08:45:54,132 INFO L168 Benchmark]: Boogie Preprocessor took 73.63 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:45:54,133 INFO L168 Benchmark]: RCFGBuilder took 991.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 60.0 MB). Peak memory consumption was 60.0 MB. Max. memory is 11.5 GB. [2019-11-25 08:45:54,133 INFO L168 Benchmark]: TraceAbstraction took 21464.52 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 42.5 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -66.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:45:54,135 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 587.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -185.4 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 73.63 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 991.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 60.0 MB). Peak memory consumption was 60.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 21464.52 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 42.5 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -66.9 MB). There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: incompatible size de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: incompatible size: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.analyzeCosts(ArrayIndexBasedCostEstimation.java:211) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...