./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 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/forester-heap/sll-circular-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6ca87716ddde5218a0bb0d9c4d67f4e1c636cb2c .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup) --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 18:25:54,721 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 18:25:54,724 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 18:25:54,747 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 18:25:54,748 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 18:25:54,749 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 18:25:54,751 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 18:25:54,753 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 18:25:54,754 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 18:25:54,755 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 18:25:54,757 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 18:25:54,758 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 18:25:54,758 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 18:25:54,759 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 18:25:54,760 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 18:25:54,762 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 18:25:54,763 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 18:25:54,764 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 18:25:54,765 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 18:25:54,767 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 18:25:54,769 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 18:25:54,770 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 18:25:54,771 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 18:25:54,772 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 18:25:54,775 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 18:25:54,775 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 18:25:54,776 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 18:25:54,777 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 18:25:54,777 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 18:25:54,778 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 18:25:54,778 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 18:25:54,779 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 18:25:54,780 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 18:25:54,781 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 18:25:54,782 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 18:25:54,782 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 18:25:54,783 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 18:25:54,784 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 18:25:54,784 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 18:25:54,785 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 18:25:54,786 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 18:25:54,787 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2020-10-19 18:25:54,816 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 18:25:54,816 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 18:25:54,818 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 18:25:54,818 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 18:25:54,818 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 18:25:54,819 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 18:25:54,819 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 18:25:54,819 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 18:25:54,819 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 18:25:54,820 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 18:25:54,820 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 18:25:54,820 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-19 18:25:54,820 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-19 18:25:54,821 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 18:25:54,821 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-19 18:25:54,821 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 18:25:54,821 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 18:25:54,822 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 18:25:54,822 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 18:25:54,822 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 18:25:54,823 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 18:25:54,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:25:54,823 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 18:25:54,824 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 18:25:54,824 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 18:25:54,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 18:25:54,825 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 18:25:54,825 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ca87716ddde5218a0bb0d9c4d67f4e1c636cb2c [2020-10-19 18:25:55,143 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 18:25:55,155 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 18:25:55,159 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 18:25:55,160 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 18:25:55,161 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 18:25:55,162 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/sll-circular-2.i [2020-10-19 18:25:55,225 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c28a30b88/e907ad821fd64092ac66ed649bf8e094/FLAGe8b76a046 [2020-10-19 18:25:55,723 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 18:25:55,724 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-circular-2.i [2020-10-19 18:25:55,743 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c28a30b88/e907ad821fd64092ac66ed649bf8e094/FLAGe8b76a046 [2020-10-19 18:25:56,086 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c28a30b88/e907ad821fd64092ac66ed649bf8e094 [2020-10-19 18:25:56,090 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 18:25:56,098 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-19 18:25:56,099 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 18:25:56,099 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 18:25:56,103 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 18:25:56,104 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:25:56" (1/1) ... [2020-10-19 18:25:56,108 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64c083c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:25:56, skipping insertion in model container [2020-10-19 18:25:56,108 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 06:25:56" (1/1) ... [2020-10-19 18:25:56,120 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 18:25:56,185 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 18:25:56,583 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:25:56,594 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 18:25:56,637 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 18:25:56,692 INFO L208 MainTranslator]: Completed translation [2020-10-19 18:25:56,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:25:56 WrapperNode [2020-10-19 18:25:56,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 18:25:56,694 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 18:25:56,694 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 18:25:56,695 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 18:25:56,709 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:25:56" (1/1) ... [2020-10-19 18:25:56,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:25:56" (1/1) ... [2020-10-19 18:25:56,726 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:25:56" (1/1) ... [2020-10-19 18:25:56,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:25:56" (1/1) ... [2020-10-19 18:25:56,742 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:25:56" (1/1) ... [2020-10-19 18:25:56,754 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:25:56" (1/1) ... [2020-10-19 18:25:56,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:25:56" (1/1) ... [2020-10-19 18:25:56,775 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 18:25:56,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 18:25:56,778 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 18:25:56,778 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 18:25:56,779 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:25:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 18:25:56,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-19 18:25:56,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 18:25:56,867 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-19 18:25:56,868 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-19 18:25:56,868 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-19 18:25:56,869 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-19 18:25:56,869 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-19 18:25:56,870 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-19 18:25:56,870 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-19 18:25:56,870 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-19 18:25:56,870 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-19 18:25:56,871 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-19 18:25:56,872 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-19 18:25:56,872 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-19 18:25:56,872 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-19 18:25:56,872 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-19 18:25:56,873 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-19 18:25:56,874 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-19 18:25:56,875 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-19 18:25:56,875 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-19 18:25:56,875 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-19 18:25:56,875 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-19 18:25:56,876 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-19 18:25:56,876 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-19 18:25:56,876 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-19 18:25:56,876 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-19 18:25:56,876 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-19 18:25:56,878 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-19 18:25:56,878 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-19 18:25:56,878 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-19 18:25:56,879 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-19 18:25:56,879 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-19 18:25:56,879 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-19 18:25:56,879 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-19 18:25:56,879 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-19 18:25:56,879 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-19 18:25:56,880 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-19 18:25:56,880 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-19 18:25:56,880 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-19 18:25:56,880 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-19 18:25:56,880 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-19 18:25:56,881 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-19 18:25:56,881 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-19 18:25:56,881 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-19 18:25:56,882 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-19 18:25:56,883 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-19 18:25:56,884 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-19 18:25:56,884 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-19 18:25:56,885 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-19 18:25:56,885 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-19 18:25:56,886 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-19 18:25:56,886 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-19 18:25:56,886 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-19 18:25:56,886 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-19 18:25:56,887 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-19 18:25:56,887 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-19 18:25:56,887 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-19 18:25:56,887 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-19 18:25:56,887 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-19 18:25:56,888 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-19 18:25:56,888 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-19 18:25:56,888 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-19 18:25:56,889 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-19 18:25:56,889 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-19 18:25:56,889 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-19 18:25:56,889 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-19 18:25:56,889 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-19 18:25:56,891 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-19 18:25:56,891 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-19 18:25:56,891 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-19 18:25:56,891 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-19 18:25:56,892 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-19 18:25:56,892 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-19 18:25:56,893 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-19 18:25:56,893 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-19 18:25:56,894 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-19 18:25:56,895 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-19 18:25:56,895 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-19 18:25:56,896 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-19 18:25:56,896 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-19 18:25:56,896 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-19 18:25:56,896 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-19 18:25:56,896 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-19 18:25:56,897 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-19 18:25:56,897 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-19 18:25:56,897 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-19 18:25:56,897 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-19 18:25:56,897 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-19 18:25:56,898 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-19 18:25:56,898 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-19 18:25:56,898 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-19 18:25:56,898 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-19 18:25:56,898 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-19 18:25:56,899 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-19 18:25:56,899 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-19 18:25:56,899 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-19 18:25:56,899 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-19 18:25:56,899 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-19 18:25:56,900 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-19 18:25:56,900 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-19 18:25:56,900 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-19 18:25:56,900 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-19 18:25:56,900 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-19 18:25:56,901 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-19 18:25:56,901 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-19 18:25:56,901 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-19 18:25:56,901 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-19 18:25:56,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-19 18:25:56,902 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-19 18:25:56,902 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-19 18:25:56,902 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-19 18:25:56,902 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-19 18:25:56,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 18:25:56,903 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-19 18:25:56,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 18:25:56,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-19 18:25:56,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 18:25:56,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-19 18:25:56,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 18:25:56,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-19 18:25:56,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-19 18:25:56,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 18:25:56,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 18:25:57,700 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 18:25:57,700 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-19 18:25:57,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:25:57 BoogieIcfgContainer [2020-10-19 18:25:57,703 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 18:25:57,704 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 18:25:57,704 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 18:25:57,708 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 18:25:57,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 06:25:56" (1/3) ... [2020-10-19 18:25:57,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b1eced4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:25:57, skipping insertion in model container [2020-10-19 18:25:57,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 06:25:56" (2/3) ... [2020-10-19 18:25:57,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b1eced4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 06:25:57, skipping insertion in model container [2020-10-19 18:25:57,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:25:57" (3/3) ... [2020-10-19 18:25:57,713 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-circular-2.i [2020-10-19 18:25:57,726 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 18:25:57,735 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 44 error locations. [2020-10-19 18:25:57,750 INFO L253 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2020-10-19 18:25:57,773 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 18:25:57,773 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-19 18:25:57,773 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 18:25:57,774 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 18:25:57,774 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 18:25:57,774 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 18:25:57,774 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 18:25:57,775 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 18:25:57,798 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states. [2020-10-19 18:25:57,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-19 18:25:57,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:25:57,809 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:25:57,810 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, 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]=== [2020-10-19 18:25:57,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:25:57,817 INFO L82 PathProgramCache]: Analyzing trace with hash 300944310, now seen corresponding path program 1 times [2020-10-19 18:25:57,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:25:57,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502316965] [2020-10-19 18:25:57,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:25:57,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:25:58,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:25:58,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:25:58,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:25:58,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502316965] [2020-10-19 18:25:58,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:25:58,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:25:58,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359052793] [2020-10-19 18:25:58,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:25:58,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:25:58,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:25:58,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:25:58,109 INFO L87 Difference]: Start difference. First operand 111 states. Second operand 4 states. [2020-10-19 18:25:58,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:25:58,399 INFO L93 Difference]: Finished difference Result 112 states and 121 transitions. [2020-10-19 18:25:58,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:25:58,401 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-19 18:25:58,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:25:58,413 INFO L225 Difference]: With dead ends: 112 [2020-10-19 18:25:58,413 INFO L226 Difference]: Without dead ends: 109 [2020-10-19 18:25:58,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:25:58,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-19 18:25:58,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 99. [2020-10-19 18:25:58,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-19 18:25:58,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 107 transitions. [2020-10-19 18:25:58,464 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 107 transitions. Word has length 7 [2020-10-19 18:25:58,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:25:58,465 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 107 transitions. [2020-10-19 18:25:58,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:25:58,465 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 107 transitions. [2020-10-19 18:25:58,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-19 18:25:58,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:25:58,466 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:25:58,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 18:25:58,467 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, 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]=== [2020-10-19 18:25:58,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:25:58,468 INFO L82 PathProgramCache]: Analyzing trace with hash 300944311, now seen corresponding path program 1 times [2020-10-19 18:25:58,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:25:58,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601808593] [2020-10-19 18:25:58,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:25:58,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:25:58,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:25:58,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:25:58,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:25:58,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601808593] [2020-10-19 18:25:58,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:25:58,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 18:25:58,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769262399] [2020-10-19 18:25:58,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:25:58,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:25:58,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:25:58,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:25:58,582 INFO L87 Difference]: Start difference. First operand 99 states and 107 transitions. Second operand 4 states. [2020-10-19 18:25:58,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:25:58,859 INFO L93 Difference]: Finished difference Result 107 states and 115 transitions. [2020-10-19 18:25:58,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:25:58,860 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-19 18:25:58,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:25:58,863 INFO L225 Difference]: With dead ends: 107 [2020-10-19 18:25:58,863 INFO L226 Difference]: Without dead ends: 107 [2020-10-19 18:25:58,864 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:25:58,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-19 18:25:58,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 95. [2020-10-19 18:25:58,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-19 18:25:58,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 103 transitions. [2020-10-19 18:25:58,886 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 103 transitions. Word has length 7 [2020-10-19 18:25:58,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:25:58,886 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 103 transitions. [2020-10-19 18:25:58,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:25:58,887 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 103 transitions. [2020-10-19 18:25:58,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-19 18:25:58,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:25:58,888 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:25:58,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 18:25:58,889 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, 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]=== [2020-10-19 18:25:58,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:25:58,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1625823625, now seen corresponding path program 1 times [2020-10-19 18:25:58,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:25:58,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396352934] [2020-10-19 18:25:58,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:25:58,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:25:58,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:25:58,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:25:59,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:25:59,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396352934] [2020-10-19 18:25:59,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:25:59,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:25:59,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070544745] [2020-10-19 18:25:59,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:25:59,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:25:59,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:25:59,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:25:59,018 INFO L87 Difference]: Start difference. First operand 95 states and 103 transitions. Second operand 5 states. [2020-10-19 18:25:59,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:25:59,268 INFO L93 Difference]: Finished difference Result 93 states and 102 transitions. [2020-10-19 18:25:59,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 18:25:59,269 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-19 18:25:59,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:25:59,270 INFO L225 Difference]: With dead ends: 93 [2020-10-19 18:25:59,270 INFO L226 Difference]: Without dead ends: 93 [2020-10-19 18:25:59,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:25:59,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-19 18:25:59,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 84. [2020-10-19 18:25:59,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-19 18:25:59,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 92 transitions. [2020-10-19 18:25:59,279 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 92 transitions. Word has length 12 [2020-10-19 18:25:59,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:25:59,279 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 92 transitions. [2020-10-19 18:25:59,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:25:59,279 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 92 transitions. [2020-10-19 18:25:59,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-19 18:25:59,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:25:59,280 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:25:59,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 18:25:59,281 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, 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]=== [2020-10-19 18:25:59,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:25:59,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1625823624, now seen corresponding path program 1 times [2020-10-19 18:25:59,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:25:59,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376649790] [2020-10-19 18:25:59,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:25:59,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:25:59,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:25:59,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:25:59,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:25:59,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376649790] [2020-10-19 18:25:59,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:25:59,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:25:59,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990955091] [2020-10-19 18:25:59,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 18:25:59,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:25:59,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 18:25:59,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 18:25:59,412 INFO L87 Difference]: Start difference. First operand 84 states and 92 transitions. Second operand 5 states. [2020-10-19 18:25:59,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:25:59,674 INFO L93 Difference]: Finished difference Result 103 states and 112 transitions. [2020-10-19 18:25:59,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 18:25:59,675 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-19 18:25:59,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:25:59,676 INFO L225 Difference]: With dead ends: 103 [2020-10-19 18:25:59,676 INFO L226 Difference]: Without dead ends: 103 [2020-10-19 18:25:59,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:25:59,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-19 18:25:59,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 89. [2020-10-19 18:25:59,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-19 18:25:59,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 98 transitions. [2020-10-19 18:25:59,693 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 98 transitions. Word has length 12 [2020-10-19 18:25:59,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:25:59,694 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 98 transitions. [2020-10-19 18:25:59,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 18:25:59,694 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 98 transitions. [2020-10-19 18:25:59,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-19 18:25:59,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:25:59,695 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:25:59,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 18:25:59,695 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, 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]=== [2020-10-19 18:25:59,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:25:59,696 INFO L82 PathProgramCache]: Analyzing trace with hash -565115390, now seen corresponding path program 1 times [2020-10-19 18:25:59,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:25:59,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679878400] [2020-10-19 18:25:59,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:25:59,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:25:59,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:25:59,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:25:59,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:25:59,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679878400] [2020-10-19 18:25:59,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:25:59,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 18:25:59,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381520040] [2020-10-19 18:25:59,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:25:59,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:25:59,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:25:59,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:25:59,860 INFO L87 Difference]: Start difference. First operand 89 states and 98 transitions. Second operand 7 states. [2020-10-19 18:26:00,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:00,338 INFO L93 Difference]: Finished difference Result 137 states and 151 transitions. [2020-10-19 18:26:00,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 18:26:00,339 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-19 18:26:00,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:00,341 INFO L225 Difference]: With dead ends: 137 [2020-10-19 18:26:00,341 INFO L226 Difference]: Without dead ends: 137 [2020-10-19 18:26:00,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:26:00,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-10-19 18:26:00,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 88. [2020-10-19 18:26:00,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-19 18:26:00,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 97 transitions. [2020-10-19 18:26:00,348 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 97 transitions. Word has length 15 [2020-10-19 18:26:00,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:00,349 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 97 transitions. [2020-10-19 18:26:00,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:26:00,349 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 97 transitions. [2020-10-19 18:26:00,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-19 18:26:00,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:00,350 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:00,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-19 18:26:00,350 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, 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]=== [2020-10-19 18:26:00,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:00,351 INFO L82 PathProgramCache]: Analyzing trace with hash -565115389, now seen corresponding path program 1 times [2020-10-19 18:26:00,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:00,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436970474] [2020-10-19 18:26:00,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:00,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:00,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:00,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:00,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:26:00,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436970474] [2020-10-19 18:26:00,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:00,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-19 18:26:00,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491331877] [2020-10-19 18:26:00,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:26:00,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:00,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:26:00,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:26:00,444 INFO L87 Difference]: Start difference. First operand 88 states and 97 transitions. Second operand 7 states. [2020-10-19 18:26:00,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:00,958 INFO L93 Difference]: Finished difference Result 135 states and 148 transitions. [2020-10-19 18:26:00,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 18:26:00,960 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-19 18:26:00,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:00,961 INFO L225 Difference]: With dead ends: 135 [2020-10-19 18:26:00,961 INFO L226 Difference]: Without dead ends: 135 [2020-10-19 18:26:00,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:26:00,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-19 18:26:00,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 78. [2020-10-19 18:26:00,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-19 18:26:00,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2020-10-19 18:26:00,968 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 15 [2020-10-19 18:26:00,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:00,969 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2020-10-19 18:26:00,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:26:00,969 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2020-10-19 18:26:00,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-19 18:26:00,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:00,970 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:00,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-19 18:26:00,971 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, 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]=== [2020-10-19 18:26:00,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:00,972 INFO L82 PathProgramCache]: Analyzing trace with hash -2146668879, now seen corresponding path program 1 times [2020-10-19 18:26:00,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:00,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105429021] [2020-10-19 18:26:00,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:00,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:01,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:01,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:01,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:26:01,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105429021] [2020-10-19 18:26:01,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:01,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-19 18:26:01,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972127915] [2020-10-19 18:26:01,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 18:26:01,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:01,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 18:26:01,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:26:01,167 INFO L87 Difference]: Start difference. First operand 78 states and 86 transitions. Second operand 9 states. [2020-10-19 18:26:01,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:01,571 INFO L93 Difference]: Finished difference Result 127 states and 140 transitions. [2020-10-19 18:26:01,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-19 18:26:01,572 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2020-10-19 18:26:01,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:01,573 INFO L225 Difference]: With dead ends: 127 [2020-10-19 18:26:01,574 INFO L226 Difference]: Without dead ends: 127 [2020-10-19 18:26:01,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-19 18:26:01,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-19 18:26:01,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 86. [2020-10-19 18:26:01,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-19 18:26:01,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 97 transitions. [2020-10-19 18:26:01,593 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 97 transitions. Word has length 17 [2020-10-19 18:26:01,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:01,593 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 97 transitions. [2020-10-19 18:26:01,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 18:26:01,594 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 97 transitions. [2020-10-19 18:26:01,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-19 18:26:01,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:01,597 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:01,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-19 18:26:01,597 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, 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]=== [2020-10-19 18:26:01,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:01,598 INFO L82 PathProgramCache]: Analyzing trace with hash -2146668878, now seen corresponding path program 1 times [2020-10-19 18:26:01,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:01,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651929634] [2020-10-19 18:26:01,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:01,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:01,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:01,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:01,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:26:01,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651929634] [2020-10-19 18:26:01,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:01,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-19 18:26:01,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251755701] [2020-10-19 18:26:01,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 18:26:01,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:01,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 18:26:01,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:26:01,847 INFO L87 Difference]: Start difference. First operand 86 states and 97 transitions. Second operand 9 states. [2020-10-19 18:26:02,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:02,362 INFO L93 Difference]: Finished difference Result 159 states and 175 transitions. [2020-10-19 18:26:02,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 18:26:02,362 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2020-10-19 18:26:02,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:02,364 INFO L225 Difference]: With dead ends: 159 [2020-10-19 18:26:02,364 INFO L226 Difference]: Without dead ends: 159 [2020-10-19 18:26:02,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-10-19 18:26:02,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-19 18:26:02,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 98. [2020-10-19 18:26:02,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-19 18:26:02,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 115 transitions. [2020-10-19 18:26:02,371 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 115 transitions. Word has length 17 [2020-10-19 18:26:02,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:02,372 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 115 transitions. [2020-10-19 18:26:02,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 18:26:02,372 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 115 transitions. [2020-10-19 18:26:02,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-19 18:26:02,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:02,373 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:02,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-19 18:26:02,374 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, 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]=== [2020-10-19 18:26:02,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:02,375 INFO L82 PathProgramCache]: Analyzing trace with hash -2122246388, now seen corresponding path program 1 times [2020-10-19 18:26:02,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:02,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993362501] [2020-10-19 18:26:02,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:02,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:02,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:02,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:02,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:26:02,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993362501] [2020-10-19 18:26:02,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:02,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-19 18:26:02,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39425066] [2020-10-19 18:26:02,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 18:26:02,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:02,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 18:26:02,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:26:02,496 INFO L87 Difference]: Start difference. First operand 98 states and 115 transitions. Second operand 9 states. [2020-10-19 18:26:02,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:02,868 INFO L93 Difference]: Finished difference Result 158 states and 173 transitions. [2020-10-19 18:26:02,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 18:26:02,869 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-10-19 18:26:02,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:02,870 INFO L225 Difference]: With dead ends: 158 [2020-10-19 18:26:02,871 INFO L226 Difference]: Without dead ends: 158 [2020-10-19 18:26:02,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-10-19 18:26:02,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-19 18:26:02,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 98. [2020-10-19 18:26:02,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-19 18:26:02,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 114 transitions. [2020-10-19 18:26:02,884 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 114 transitions. Word has length 18 [2020-10-19 18:26:02,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:02,884 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 114 transitions. [2020-10-19 18:26:02,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 18:26:02,884 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 114 transitions. [2020-10-19 18:26:02,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-19 18:26:02,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:02,886 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:02,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-19 18:26:02,888 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, 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]=== [2020-10-19 18:26:02,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:02,888 INFO L82 PathProgramCache]: Analyzing trace with hash 650548680, now seen corresponding path program 1 times [2020-10-19 18:26:02,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:02,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929673561] [2020-10-19 18:26:02,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:02,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:03,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:03,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:03,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:26:03,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929673561] [2020-10-19 18:26:03,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:03,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-19 18:26:03,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996195387] [2020-10-19 18:26:03,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-19 18:26:03,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:03,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-19 18:26:03,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:26:03,122 INFO L87 Difference]: Start difference. First operand 98 states and 114 transitions. Second operand 10 states. [2020-10-19 18:26:03,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:03,615 INFO L93 Difference]: Finished difference Result 144 states and 159 transitions. [2020-10-19 18:26:03,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-19 18:26:03,615 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-10-19 18:26:03,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:03,617 INFO L225 Difference]: With dead ends: 144 [2020-10-19 18:26:03,617 INFO L226 Difference]: Without dead ends: 144 [2020-10-19 18:26:03,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-19 18:26:03,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-19 18:26:03,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 98. [2020-10-19 18:26:03,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-19 18:26:03,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 113 transitions. [2020-10-19 18:26:03,622 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 113 transitions. Word has length 20 [2020-10-19 18:26:03,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:03,623 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 113 transitions. [2020-10-19 18:26:03,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-19 18:26:03,623 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 113 transitions. [2020-10-19 18:26:03,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-19 18:26:03,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:03,624 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:03,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-19 18:26:03,625 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, 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]=== [2020-10-19 18:26:03,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:03,625 INFO L82 PathProgramCache]: Analyzing trace with hash 650548681, now seen corresponding path program 1 times [2020-10-19 18:26:03,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:03,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279515231] [2020-10-19 18:26:03,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:03,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:03,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:03,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:03,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:26:03,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279515231] [2020-10-19 18:26:03,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:03,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-19 18:26:03,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887269406] [2020-10-19 18:26:03,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 18:26:03,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:03,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 18:26:03,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:26:03,788 INFO L87 Difference]: Start difference. First operand 98 states and 113 transitions. Second operand 9 states. [2020-10-19 18:26:04,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:04,257 INFO L93 Difference]: Finished difference Result 154 states and 169 transitions. [2020-10-19 18:26:04,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 18:26:04,257 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2020-10-19 18:26:04,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:04,259 INFO L225 Difference]: With dead ends: 154 [2020-10-19 18:26:04,259 INFO L226 Difference]: Without dead ends: 154 [2020-10-19 18:26:04,260 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-19 18:26:04,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-19 18:26:04,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 98. [2020-10-19 18:26:04,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-19 18:26:04,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 112 transitions. [2020-10-19 18:26:04,264 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 112 transitions. Word has length 20 [2020-10-19 18:26:04,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:04,265 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 112 transitions. [2020-10-19 18:26:04,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 18:26:04,265 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 112 transitions. [2020-10-19 18:26:04,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-19 18:26:04,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:04,266 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:04,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-19 18:26:04,267 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, 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]=== [2020-10-19 18:26:04,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:04,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1307842199, now seen corresponding path program 1 times [2020-10-19 18:26:04,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:04,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597661479] [2020-10-19 18:26:04,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:04,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:04,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:04,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:04,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:26:04,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597661479] [2020-10-19 18:26:04,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:04,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-19 18:26:04,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743691762] [2020-10-19 18:26:04,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 18:26:04,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:04,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 18:26:04,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:26:04,341 INFO L87 Difference]: Start difference. First operand 98 states and 112 transitions. Second operand 8 states. [2020-10-19 18:26:04,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:04,718 INFO L93 Difference]: Finished difference Result 134 states and 152 transitions. [2020-10-19 18:26:04,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-19 18:26:04,720 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-10-19 18:26:04,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:04,721 INFO L225 Difference]: With dead ends: 134 [2020-10-19 18:26:04,721 INFO L226 Difference]: Without dead ends: 134 [2020-10-19 18:26:04,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-19 18:26:04,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-19 18:26:04,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 99. [2020-10-19 18:26:04,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-19 18:26:04,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 114 transitions. [2020-10-19 18:26:04,726 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 114 transitions. Word has length 21 [2020-10-19 18:26:04,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:04,726 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 114 transitions. [2020-10-19 18:26:04,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 18:26:04,727 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 114 transitions. [2020-10-19 18:26:04,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-19 18:26:04,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:04,728 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:04,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-19 18:26:04,728 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, 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]=== [2020-10-19 18:26:04,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:04,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1307842198, now seen corresponding path program 1 times [2020-10-19 18:26:04,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:04,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175538319] [2020-10-19 18:26:04,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:04,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:04,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:04,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:04,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:26:04,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175538319] [2020-10-19 18:26:04,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:04,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-19 18:26:04,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366337922] [2020-10-19 18:26:04,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-19 18:26:04,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:04,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-19 18:26:04,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:26:04,937 INFO L87 Difference]: Start difference. First operand 99 states and 114 transitions. Second operand 12 states. [2020-10-19 18:26:05,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:05,581 INFO L93 Difference]: Finished difference Result 144 states and 160 transitions. [2020-10-19 18:26:05,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-19 18:26:05,583 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 21 [2020-10-19 18:26:05,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:05,585 INFO L225 Difference]: With dead ends: 144 [2020-10-19 18:26:05,585 INFO L226 Difference]: Without dead ends: 144 [2020-10-19 18:26:05,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2020-10-19 18:26:05,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-19 18:26:05,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 118. [2020-10-19 18:26:05,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-19 18:26:05,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 147 transitions. [2020-10-19 18:26:05,592 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 147 transitions. Word has length 21 [2020-10-19 18:26:05,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:05,592 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 147 transitions. [2020-10-19 18:26:05,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-19 18:26:05,593 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 147 transitions. [2020-10-19 18:26:05,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-19 18:26:05,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:05,595 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:05,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-19 18:26:05,597 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, 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]=== [2020-10-19 18:26:05,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:05,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1280392747, now seen corresponding path program 1 times [2020-10-19 18:26:05,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:05,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952081374] [2020-10-19 18:26:05,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:05,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:05,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:05,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:05,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:26:05,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952081374] [2020-10-19 18:26:05,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:05,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-19 18:26:05,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369812872] [2020-10-19 18:26:05,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 18:26:05,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:05,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 18:26:05,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-19 18:26:05,672 INFO L87 Difference]: Start difference. First operand 118 states and 147 transitions. Second operand 7 states. [2020-10-19 18:26:06,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:06,007 INFO L93 Difference]: Finished difference Result 150 states and 168 transitions. [2020-10-19 18:26:06,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 18:26:06,008 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-10-19 18:26:06,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:06,009 INFO L225 Difference]: With dead ends: 150 [2020-10-19 18:26:06,010 INFO L226 Difference]: Without dead ends: 150 [2020-10-19 18:26:06,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:26:06,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-19 18:26:06,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 117. [2020-10-19 18:26:06,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-19 18:26:06,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 145 transitions. [2020-10-19 18:26:06,015 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 145 transitions. Word has length 22 [2020-10-19 18:26:06,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:06,016 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 145 transitions. [2020-10-19 18:26:06,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 18:26:06,016 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 145 transitions. [2020-10-19 18:26:06,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-19 18:26:06,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:06,017 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:06,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-19 18:26:06,017 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, 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]=== [2020-10-19 18:26:06,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:06,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1589069240, now seen corresponding path program 1 times [2020-10-19 18:26:06,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:06,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532243695] [2020-10-19 18:26:06,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:06,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:06,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:06,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:06,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:26:06,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532243695] [2020-10-19 18:26:06,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:06,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-19 18:26:06,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237582242] [2020-10-19 18:26:06,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-19 18:26:06,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:06,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-19 18:26:06,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-19 18:26:06,290 INFO L87 Difference]: Start difference. First operand 117 states and 145 transitions. Second operand 12 states. [2020-10-19 18:26:06,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:06,928 INFO L93 Difference]: Finished difference Result 153 states and 167 transitions. [2020-10-19 18:26:06,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-19 18:26:06,928 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-19 18:26:06,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:06,930 INFO L225 Difference]: With dead ends: 153 [2020-10-19 18:26:06,930 INFO L226 Difference]: Without dead ends: 153 [2020-10-19 18:26:06,932 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2020-10-19 18:26:06,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-19 18:26:06,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 118. [2020-10-19 18:26:06,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-19 18:26:06,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 146 transitions. [2020-10-19 18:26:06,936 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 146 transitions. Word has length 23 [2020-10-19 18:26:06,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:06,937 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 146 transitions. [2020-10-19 18:26:06,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-19 18:26:06,937 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 146 transitions. [2020-10-19 18:26:06,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-19 18:26:06,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:06,939 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:06,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-19 18:26:06,939 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, 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]=== [2020-10-19 18:26:06,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:06,940 INFO L82 PathProgramCache]: Analyzing trace with hash 2016506411, now seen corresponding path program 1 times [2020-10-19 18:26:06,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:06,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201839914] [2020-10-19 18:26:06,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:06,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:07,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:07,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:07,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:26:07,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201839914] [2020-10-19 18:26:07,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:07,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-19 18:26:07,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522899788] [2020-10-19 18:26:07,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 18:26:07,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:07,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 18:26:07,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:26:07,085 INFO L87 Difference]: Start difference. First operand 118 states and 146 transitions. Second operand 9 states. [2020-10-19 18:26:07,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:07,512 INFO L93 Difference]: Finished difference Result 146 states and 162 transitions. [2020-10-19 18:26:07,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 18:26:07,513 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-10-19 18:26:07,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:07,514 INFO L225 Difference]: With dead ends: 146 [2020-10-19 18:26:07,514 INFO L226 Difference]: Without dead ends: 146 [2020-10-19 18:26:07,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-10-19 18:26:07,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-19 18:26:07,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 119. [2020-10-19 18:26:07,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-19 18:26:07,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 147 transitions. [2020-10-19 18:26:07,518 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 147 transitions. Word has length 24 [2020-10-19 18:26:07,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:07,519 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 147 transitions. [2020-10-19 18:26:07,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 18:26:07,519 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 147 transitions. [2020-10-19 18:26:07,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-19 18:26:07,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:07,520 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:07,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-19 18:26:07,520 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, 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]=== [2020-10-19 18:26:07,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:07,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1912764758, now seen corresponding path program 1 times [2020-10-19 18:26:07,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:07,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657006909] [2020-10-19 18:26:07,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:07,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:07,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:07,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:07,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:26:07,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657006909] [2020-10-19 18:26:07,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:07,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-19 18:26:07,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490427451] [2020-10-19 18:26:07,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 18:26:07,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:07,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 18:26:07,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-19 18:26:07,643 INFO L87 Difference]: Start difference. First operand 119 states and 147 transitions. Second operand 9 states. [2020-10-19 18:26:07,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:07,941 INFO L93 Difference]: Finished difference Result 138 states and 155 transitions. [2020-10-19 18:26:07,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 18:26:07,942 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-19 18:26:07,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:07,943 INFO L225 Difference]: With dead ends: 138 [2020-10-19 18:26:07,944 INFO L226 Difference]: Without dead ends: 138 [2020-10-19 18:26:07,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-19 18:26:07,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-19 18:26:07,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 121. [2020-10-19 18:26:07,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-19 18:26:07,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 149 transitions. [2020-10-19 18:26:07,949 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 149 transitions. Word has length 25 [2020-10-19 18:26:07,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:07,949 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 149 transitions. [2020-10-19 18:26:07,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 18:26:07,949 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 149 transitions. [2020-10-19 18:26:07,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-19 18:26:07,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:07,950 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:07,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-19 18:26:07,951 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, 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]=== [2020-10-19 18:26:07,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:07,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1043391332, now seen corresponding path program 1 times [2020-10-19 18:26:07,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:07,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569753889] [2020-10-19 18:26:07,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:07,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:07,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:08,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:08,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:26:08,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569753889] [2020-10-19 18:26:08,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:08,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 18:26:08,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217726962] [2020-10-19 18:26:08,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 18:26:08,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:08,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 18:26:08,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-19 18:26:08,006 INFO L87 Difference]: Start difference. First operand 121 states and 149 transitions. Second operand 6 states. [2020-10-19 18:26:08,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:08,197 INFO L93 Difference]: Finished difference Result 123 states and 152 transitions. [2020-10-19 18:26:08,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 18:26:08,198 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-10-19 18:26:08,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:08,200 INFO L225 Difference]: With dead ends: 123 [2020-10-19 18:26:08,200 INFO L226 Difference]: Without dead ends: 123 [2020-10-19 18:26:08,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-19 18:26:08,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-19 18:26:08,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 120. [2020-10-19 18:26:08,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-19 18:26:08,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 146 transitions. [2020-10-19 18:26:08,205 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 146 transitions. Word has length 25 [2020-10-19 18:26:08,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:08,206 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 146 transitions. [2020-10-19 18:26:08,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 18:26:08,206 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 146 transitions. [2020-10-19 18:26:08,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-19 18:26:08,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:08,207 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:08,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-19 18:26:08,207 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, 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]=== [2020-10-19 18:26:08,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:08,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1043391331, now seen corresponding path program 1 times [2020-10-19 18:26:08,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:08,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280737439] [2020-10-19 18:26:08,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:08,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:08,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:08,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:08,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:26:08,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280737439] [2020-10-19 18:26:08,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:08,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-19 18:26:08,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287486710] [2020-10-19 18:26:08,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-19 18:26:08,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:08,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-19 18:26:08,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-19 18:26:08,361 INFO L87 Difference]: Start difference. First operand 120 states and 146 transitions. Second operand 11 states. [2020-10-19 18:26:08,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:08,915 INFO L93 Difference]: Finished difference Result 139 states and 155 transitions. [2020-10-19 18:26:08,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-19 18:26:08,916 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-19 18:26:08,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:08,918 INFO L225 Difference]: With dead ends: 139 [2020-10-19 18:26:08,918 INFO L226 Difference]: Without dead ends: 139 [2020-10-19 18:26:08,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2020-10-19 18:26:08,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-19 18:26:08,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 120. [2020-10-19 18:26:08,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-19 18:26:08,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 145 transitions. [2020-10-19 18:26:08,923 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 145 transitions. Word has length 25 [2020-10-19 18:26:08,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:08,924 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 145 transitions. [2020-10-19 18:26:08,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-19 18:26:08,924 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 145 transitions. [2020-10-19 18:26:08,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-19 18:26:08,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:08,925 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:08,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-19 18:26:08,925 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, 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]=== [2020-10-19 18:26:08,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:08,926 INFO L82 PathProgramCache]: Analyzing trace with hash 2026205111, now seen corresponding path program 1 times [2020-10-19 18:26:08,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:08,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805814163] [2020-10-19 18:26:08,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:08,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:09,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:09,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:09,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:26:09,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805814163] [2020-10-19 18:26:09,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:09,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-19 18:26:09,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600693108] [2020-10-19 18:26:09,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-19 18:26:09,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:09,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-19 18:26:09,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-19 18:26:09,173 INFO L87 Difference]: Start difference. First operand 120 states and 145 transitions. Second operand 13 states. [2020-10-19 18:26:09,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:09,754 INFO L93 Difference]: Finished difference Result 138 states and 152 transitions. [2020-10-19 18:26:09,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-19 18:26:09,755 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 26 [2020-10-19 18:26:09,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:09,757 INFO L225 Difference]: With dead ends: 138 [2020-10-19 18:26:09,757 INFO L226 Difference]: Without dead ends: 138 [2020-10-19 18:26:09,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2020-10-19 18:26:09,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-19 18:26:09,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 120. [2020-10-19 18:26:09,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-19 18:26:09,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 144 transitions. [2020-10-19 18:26:09,762 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 144 transitions. Word has length 26 [2020-10-19 18:26:09,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:09,762 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 144 transitions. [2020-10-19 18:26:09,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-19 18:26:09,763 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 144 transitions. [2020-10-19 18:26:09,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-19 18:26:09,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:09,768 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:09,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-19 18:26:09,769 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, 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]=== [2020-10-19 18:26:09,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:09,769 INFO L82 PathProgramCache]: Analyzing trace with hash -928172417, now seen corresponding path program 1 times [2020-10-19 18:26:09,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:09,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247222422] [2020-10-19 18:26:09,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:09,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:09,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:09,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:09,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:26:09,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247222422] [2020-10-19 18:26:09,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:09,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 18:26:09,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885094018] [2020-10-19 18:26:09,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 18:26:09,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:09,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 18:26:09,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:26:09,824 INFO L87 Difference]: Start difference. First operand 120 states and 144 transitions. Second operand 4 states. [2020-10-19 18:26:09,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:09,958 INFO L93 Difference]: Finished difference Result 184 states and 215 transitions. [2020-10-19 18:26:09,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 18:26:09,959 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-19 18:26:09,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:09,961 INFO L225 Difference]: With dead ends: 184 [2020-10-19 18:26:09,961 INFO L226 Difference]: Without dead ends: 184 [2020-10-19 18:26:09,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 18:26:09,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-19 18:26:09,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 132. [2020-10-19 18:26:09,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-19 18:26:09,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 158 transitions. [2020-10-19 18:26:09,966 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 158 transitions. Word has length 25 [2020-10-19 18:26:09,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:09,966 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 158 transitions. [2020-10-19 18:26:09,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 18:26:09,967 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 158 transitions. [2020-10-19 18:26:09,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-19 18:26:09,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:09,968 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:09,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-19 18:26:09,968 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, 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]=== [2020-10-19 18:26:09,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:09,968 INFO L82 PathProgramCache]: Analyzing trace with hash 832417806, now seen corresponding path program 1 times [2020-10-19 18:26:09,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:09,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757523289] [2020-10-19 18:26:09,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:09,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:10,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:10,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:10,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:26:10,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757523289] [2020-10-19 18:26:10,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 18:26:10,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-19 18:26:10,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830606890] [2020-10-19 18:26:10,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-19 18:26:10,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:10,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-19 18:26:10,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-19 18:26:10,129 INFO L87 Difference]: Start difference. First operand 132 states and 158 transitions. Second operand 10 states. [2020-10-19 18:26:10,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:10,596 INFO L93 Difference]: Finished difference Result 148 states and 163 transitions. [2020-10-19 18:26:10,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-19 18:26:10,598 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-10-19 18:26:10,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:10,599 INFO L225 Difference]: With dead ends: 148 [2020-10-19 18:26:10,599 INFO L226 Difference]: Without dead ends: 148 [2020-10-19 18:26:10,599 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2020-10-19 18:26:10,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-19 18:26:10,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 132. [2020-10-19 18:26:10,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-19 18:26:10,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 157 transitions. [2020-10-19 18:26:10,603 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 157 transitions. Word has length 26 [2020-10-19 18:26:10,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:10,603 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 157 transitions. [2020-10-19 18:26:10,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-19 18:26:10,603 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 157 transitions. [2020-10-19 18:26:10,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-19 18:26:10,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:10,604 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:10,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-19 18:26:10,604 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, 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]=== [2020-10-19 18:26:10,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:10,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1222659237, now seen corresponding path program 1 times [2020-10-19 18:26:10,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:10,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018879022] [2020-10-19 18:26:10,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:10,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:10,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:10,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:10,761 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:26:10,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018879022] [2020-10-19 18:26:10,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359621462] [2020-10-19 18:26:10,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:26:10,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:10,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 28 conjunts are in the unsatisfiable core [2020-10-19 18:26:10,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:26:11,027 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 18:26:11,028 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:11,033 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:11,033 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:11,034 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 18:26:11,050 INFO L441 ElimStorePlain]: Different costs {0=[|v_#length_48|], 3=[|v_#valid_58|]} [2020-10-19 18:26:11,057 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 18:26:11,058 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:11,070 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:11,091 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:11,092 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-10-19 18:26:11,094 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:11,118 INFO L625 ElimStorePlain]: treesize reduction 14, result has 65.0 percent of original size [2020-10-19 18:26:11,118 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:11,119 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:29, output treesize:26 [2020-10-19 18:26:11,163 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-19 18:26:11,163 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:11,176 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:11,177 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:11,178 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:37, output treesize:38 [2020-10-19 18:26:11,281 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:11,282 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 56 [2020-10-19 18:26:11,283 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:11,311 INFO L625 ElimStorePlain]: treesize reduction 24, result has 60.7 percent of original size [2020-10-19 18:26:11,312 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:11,312 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:53, output treesize:37 [2020-10-19 18:26:11,352 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 13 treesize of output 9 [2020-10-19 18:26:11,352 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:11,369 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:11,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:26:11,376 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2020-10-19 18:26:11,377 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:11,389 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:11,389 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:11,390 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:63, output treesize:35 [2020-10-19 18:26:11,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:26:11,461 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:11,461 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 60 treesize of output 91 [2020-10-19 18:26:11,466 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[6, 3, 2, 1] term [2020-10-19 18:26:11,467 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-10-19 18:26:11,468 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:11,494 INFO L625 ElimStorePlain]: treesize reduction 60, result has 40.0 percent of original size [2020-10-19 18:26:11,497 INFO L545 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. [2020-10-19 18:26:11,497 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:71, output treesize:40 [2020-10-19 18:26:11,572 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:11,572 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2020-10-19 18:26:11,574 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:11,582 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:11,587 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:26:11,588 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:47, output treesize:15 [2020-10-19 18:26:11,683 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:26:11,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:26:11,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2020-10-19 18:26:11,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434909682] [2020-10-19 18:26:11,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-19 18:26:11,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:11,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-19 18:26:11,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2020-10-19 18:26:11,686 INFO L87 Difference]: Start difference. First operand 132 states and 157 transitions. Second operand 22 states. [2020-10-19 18:26:12,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:12,828 INFO L93 Difference]: Finished difference Result 230 states and 258 transitions. [2020-10-19 18:26:12,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-19 18:26:12,828 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 28 [2020-10-19 18:26:12,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:12,830 INFO L225 Difference]: With dead ends: 230 [2020-10-19 18:26:12,830 INFO L226 Difference]: Without dead ends: 230 [2020-10-19 18:26:12,831 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=260, Invalid=930, Unknown=0, NotChecked=0, Total=1190 [2020-10-19 18:26:12,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-19 18:26:12,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 155. [2020-10-19 18:26:12,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-19 18:26:12,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 185 transitions. [2020-10-19 18:26:12,838 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 185 transitions. Word has length 28 [2020-10-19 18:26:12,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:12,838 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 185 transitions. [2020-10-19 18:26:12,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-19 18:26:12,839 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 185 transitions. [2020-10-19 18:26:12,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-19 18:26:12,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:12,840 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:13,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-10-19 18:26:13,054 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, 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]=== [2020-10-19 18:26:13,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:13,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1222659238, now seen corresponding path program 1 times [2020-10-19 18:26:13,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:13,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70695275] [2020-10-19 18:26:13,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:13,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:13,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:13,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:13,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:26:13,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70695275] [2020-10-19 18:26:13,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666205396] [2020-10-19 18:26:13,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:26:13,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:13,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 37 conjunts are in the unsatisfiable core [2020-10-19 18:26:13,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:26:13,375 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 18:26:13,375 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:13,378 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:13,379 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:13,379 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 18:26:13,383 INFO L441 ElimStorePlain]: Different costs {0=[|v_#length_49|], 1=[|v_#valid_60|]} [2020-10-19 18:26:13,386 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 18:26:13,387 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:13,396 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:13,404 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:13,404 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-10-19 18:26:13,405 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:13,413 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:13,413 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:13,414 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:19 [2020-10-19 18:26:13,429 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-19 18:26:13,430 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:13,441 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:13,445 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-19 18:26:13,445 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:13,454 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:13,455 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:13,456 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:38, output treesize:31 [2020-10-19 18:26:13,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:26:13,545 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2020-10-19 18:26:13,546 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:13,565 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:13,588 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:13,588 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 51 [2020-10-19 18:26:13,590 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:13,621 INFO L625 ElimStorePlain]: treesize reduction 24, result has 63.1 percent of original size [2020-10-19 18:26:13,622 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:13,622 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:57, output treesize:41 [2020-10-19 18:26:13,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:26:13,686 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2020-10-19 18:26:13,689 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:13,707 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:13,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:26:13,715 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2020-10-19 18:26:13,716 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:13,736 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:13,737 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:13,737 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:86, output treesize:48 [2020-10-19 18:26:13,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:26:13,809 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 25 [2020-10-19 18:26:13,812 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:13,832 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:13,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:26:13,864 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:13,864 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 82 treesize of output 105 [2020-10-19 18:26:13,868 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[8, 3, 2, 1] term [2020-10-19 18:26:13,869 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-10-19 18:26:13,871 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:13,907 INFO L625 ElimStorePlain]: treesize reduction 60, result has 50.4 percent of original size [2020-10-19 18:26:13,910 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-19 18:26:13,910 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:123, output treesize:61 [2020-10-19 18:26:13,978 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:13,979 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 45 [2020-10-19 18:26:13,980 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:13,992 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:13,995 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2020-10-19 18:26:13,996 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:14,004 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:14,006 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:14,006 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:75, output treesize:14 [2020-10-19 18:26:14,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:26:14,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:26:14,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 17 [2020-10-19 18:26:14,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271509397] [2020-10-19 18:26:14,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-19 18:26:14,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:14,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-19 18:26:14,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2020-10-19 18:26:14,024 INFO L87 Difference]: Start difference. First operand 155 states and 185 transitions. Second operand 18 states. [2020-10-19 18:26:15,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:15,103 INFO L93 Difference]: Finished difference Result 226 states and 261 transitions. [2020-10-19 18:26:15,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-19 18:26:15,103 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 28 [2020-10-19 18:26:15,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:15,105 INFO L225 Difference]: With dead ends: 226 [2020-10-19 18:26:15,105 INFO L226 Difference]: Without dead ends: 226 [2020-10-19 18:26:15,106 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=168, Invalid=702, Unknown=0, NotChecked=0, Total=870 [2020-10-19 18:26:15,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-19 18:26:15,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 167. [2020-10-19 18:26:15,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-19 18:26:15,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 202 transitions. [2020-10-19 18:26:15,112 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 202 transitions. Word has length 28 [2020-10-19 18:26:15,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:15,113 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 202 transitions. [2020-10-19 18:26:15,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-19 18:26:15,113 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 202 transitions. [2020-10-19 18:26:15,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-19 18:26:15,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:15,115 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:15,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-10-19 18:26:15,329 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, 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]=== [2020-10-19 18:26:15,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:15,329 INFO L82 PathProgramCache]: Analyzing trace with hash -752289896, now seen corresponding path program 1 times [2020-10-19 18:26:15,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:15,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896120869] [2020-10-19 18:26:15,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:15,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:15,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-19 18:26:15,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:15,515 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:26:15,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896120869] [2020-10-19 18:26:15,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812520119] [2020-10-19 18:26:15,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 18:26:15,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 18:26:15,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 29 conjunts are in the unsatisfiable core [2020-10-19 18:26:15,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 18:26:15,639 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 18:26:15,639 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:15,644 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:15,645 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:15,645 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-19 18:26:15,649 INFO L441 ElimStorePlain]: Different costs {0=[|v_#length_50|], 1=[|v_#valid_62|]} [2020-10-19 18:26:15,652 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-19 18:26:15,653 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:15,664 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:15,672 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:15,673 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-10-19 18:26:15,673 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:15,681 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:15,681 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:15,682 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:20 [2020-10-19 18:26:15,713 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-19 18:26:15,713 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:15,724 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:15,725 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:15,726 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:32 [2020-10-19 18:26:15,823 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:15,824 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 55 [2020-10-19 18:26:15,825 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:15,853 INFO L625 ElimStorePlain]: treesize reduction 24, result has 56.4 percent of original size [2020-10-19 18:26:15,853 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:15,853 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:47, output treesize:31 [2020-10-19 18:26:15,897 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-10-19 18:26:15,898 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:15,914 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:15,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:26:15,919 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2020-10-19 18:26:15,921 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:15,931 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:15,931 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:15,931 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:57, output treesize:29 [2020-10-19 18:26:15,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-19 18:26:16,006 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:16,007 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 90 [2020-10-19 18:26:16,009 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[5, 3, 2, 1] term [2020-10-19 18:26:16,009 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-10-19 18:26:16,010 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:16,036 INFO L625 ElimStorePlain]: treesize reduction 32, result has 51.5 percent of original size [2020-10-19 18:26:16,038 INFO L545 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. [2020-10-19 18:26:16,038 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:65, output treesize:34 [2020-10-19 18:26:16,097 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:16,097 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 30 [2020-10-19 18:26:16,098 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 18:26:16,104 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 18:26:16,106 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 18:26:16,106 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:41, output treesize:4 [2020-10-19 18:26:16,110 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 18:26:16,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 18:26:16,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2020-10-19 18:26:16,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939123700] [2020-10-19 18:26:16,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-19 18:26:16,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 18:26:16,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-19 18:26:16,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2020-10-19 18:26:16,112 INFO L87 Difference]: Start difference. First operand 167 states and 202 transitions. Second operand 20 states. [2020-10-19 18:26:17,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 18:26:17,245 INFO L93 Difference]: Finished difference Result 225 states and 259 transitions. [2020-10-19 18:26:17,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-19 18:26:17,245 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 29 [2020-10-19 18:26:17,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 18:26:17,247 INFO L225 Difference]: With dead ends: 225 [2020-10-19 18:26:17,247 INFO L226 Difference]: Without dead ends: 225 [2020-10-19 18:26:17,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=154, Invalid=716, Unknown=0, NotChecked=0, Total=870 [2020-10-19 18:26:17,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-10-19 18:26:17,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 167. [2020-10-19 18:26:17,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-19 18:26:17,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 201 transitions. [2020-10-19 18:26:17,254 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 201 transitions. Word has length 29 [2020-10-19 18:26:17,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 18:26:17,254 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 201 transitions. [2020-10-19 18:26:17,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-19 18:26:17,255 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 201 transitions. [2020-10-19 18:26:17,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-19 18:26:17,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 18:26:17,257 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 18:26:17,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-10-19 18:26:17,470 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, 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]=== [2020-10-19 18:26:17,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 18:26:17,470 INFO L82 PathProgramCache]: Analyzing trace with hash -542291407, now seen corresponding path program 1 times [2020-10-19 18:26:17,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 18:26:17,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043370497] [2020-10-19 18:26:17,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 18:26:17,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:26:17,488 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:26:17,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 18:26:17,511 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 18:26:17,554 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 18:26:17,555 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 18:26:17,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-19 18:26:17,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 06:26:17 BoogieIcfgContainer [2020-10-19 18:26:17,610 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 18:26:17,611 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 18:26:17,611 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 18:26:17,611 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 18:26:17,612 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 06:25:57" (3/4) ... [2020-10-19 18:26:17,615 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-19 18:26:17,663 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 18:26:17,663 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 18:26:17,664 INFO L168 Benchmark]: Toolchain (without parser) took 21572.79 ms. Allocated memory was 1.0 GB in the beginning and 1.5 GB in the end (delta: 461.9 MB). Free memory was 950.6 MB in the beginning and 1.4 GB in the end (delta: -457.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 11.5 GB. [2020-10-19 18:26:17,665 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:26:17,665 INFO L168 Benchmark]: CACSL2BoogieTranslator took 594.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -153.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 11.5 GB. [2020-10-19 18:26:17,666 INFO L168 Benchmark]: Boogie Preprocessor took 82.73 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. [2020-10-19 18:26:17,666 INFO L168 Benchmark]: RCFGBuilder took 925.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 57.8 MB). Peak memory consumption was 57.8 MB. Max. memory is 11.5 GB. [2020-10-19 18:26:17,667 INFO L168 Benchmark]: TraceAbstraction took 19906.14 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 334.0 MB). Free memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: -369.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:26:17,667 INFO L168 Benchmark]: Witness Printer took 52.32 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 18:26:17,669 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 594.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -153.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 82.73 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 925.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 57.8 MB). Peak memory consumption was 57.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 19906.14 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 334.0 MB). Free memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: -369.1 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 52.32 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 985]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L996] SLL* head = malloc(sizeof(SLL)); VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L997] head->next = head VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L998] head->data = 0 VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1000] SLL* x = head; [L1001] int state = 1; VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}] [L1004] COND FALSE !(__VERIFIER_nondet_int()) [L1025] x->data = state VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}] [L1027] EXPR head->next VAL [head={-1:0}, head->next={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}] [L1027] x = head->next [L1028] COND FALSE !(!(((void*)0) != x)) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}] [L1030] EXPR x->data VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}, x->data=1] [L1030] COND TRUE x->data != 0 [L1032] EXPR x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}, x->next={-1:0}] [L1032] EXPR x->next->data VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}, x->next={-1:0}, x->next->data=1] [L1032] EXPR x->next->data != 0 && x->data > x->next->data VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}, x->next={-1:0}, x->next->data=1, x->next->data != 0 && x->data > x->next->data=1] [L1032] EXPR x->data VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}, x->data=1, x->next={-1:0}, x->next->data=1, x->next->data != 0 && x->data > x->next->data=1] [L1032] EXPR x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}, x->data=1, x->next={-1:0}, x->next={-1:0}, x->next->data=1, x->next->data != 0 && x->data > x->next->data=1] [L1032] EXPR x->next->data VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}, x->data=1, x->next={-1:0}, x->next={-1:0}, x->next->data=1, x->next->data=1, x->next->data != 0 && x->data > x->next->data=1] [L1032] EXPR x->next->data != 0 && x->data > x->next->data VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}, x->data=1, x->next={-1:0}, x->next={-1:0}, x->next->data=1, x->next->data=1, x->next->data != 0 && x->data > x->next->data=0] [L1032] COND TRUE !(x->next->data != 0 && x->data > x->next->data) [L1032] CALL reach_error() [L985] COND FALSE !(0) [L985] __assert_fail ("0", "sll-circular-2.c", 14, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 111 locations, 44 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 19.7s, OverallIterations: 26, TraceHistogramMax: 2, AutomataDifference: 12.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1741 SDtfs, 4670 SDslu, 5875 SDs, 0 SdLazy, 9228 SolverSat, 537 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 461 GetRequests, 134 SyntacticMatches, 6 SemanticMatches, 321 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 842 ImplicationChecksByTransitivity, 5.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=167occurred in iteration=24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 25 MinimizatonAttempts, 888 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.1s InterpolantComputationTime, 623 NumberOfCodeBlocks, 623 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 565 ConstructedInterpolants, 7 QuantifiedInterpolants, 143551 SizeOfPredicates, 37 NumberOfNonLiveVariables, 531 ConjunctsInSsa, 94 ConjunctsInUnsatCore, 28 InterpolantComputations, 22 PerfectInterpolantSequences, 0/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...