./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../sv-benchmarks/c/forester-heap/dll-circular-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -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/dll-circular-1.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 e585ced56eb20cb86f32939eb5fca0773c487edc ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 0.1.25-9a8b2e8 [2020-10-20 06:18:14,430 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:18:14,436 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:18:14,472 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:18:14,473 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:18:14,483 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:18:14,484 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:18:14,487 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:18:14,490 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:18:14,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:18:14,494 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:18:14,496 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:18:14,497 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:18:14,502 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:18:14,503 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:18:14,505 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:18:14,507 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:18:14,509 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:18:14,512 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:18:14,518 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:18:14,521 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:18:14,523 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:18:14,525 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:18:14,526 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:18:14,539 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:18:14,540 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:18:14,540 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:18:14,541 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:18:14,541 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:18:14,542 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:18:14,543 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:18:14,543 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:18:14,544 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:18:14,545 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:18:14,546 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:18:14,546 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:18:14,547 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:18:14,547 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:18:14,547 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:18:14,548 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:18:14,549 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:18:14,551 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2020-10-20 06:18:14,586 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:18:14,586 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:18:14,588 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:18:14,588 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:18:14,588 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:18:14,589 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:18:14,589 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 06:18:14,589 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:18:14,590 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:18:14,590 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 06:18:14,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:18:14,591 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 06:18:14,591 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 06:18:14,592 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:18:14,592 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 06:18:14,592 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 06:18:14,593 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:18:14,593 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:18:14,593 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:18:14,594 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:18:14,594 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:18:14,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:18:14,595 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:18:14,595 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:18:14,595 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:18:14,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 06:18:14,596 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:18:14,596 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 -> e585ced56eb20cb86f32939eb5fca0773c487edc [2020-10-20 06:18:14,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:18:14,832 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:18:14,836 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:18:14,838 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:18:14,838 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:18:14,839 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/dll-circular-1.i [2020-10-20 06:18:14,914 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebcc56a27/b4fd48892cf0454eb4d1c8eb666349e1/FLAGd88526f9e [2020-10-20 06:18:15,451 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:18:15,454 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-circular-1.i [2020-10-20 06:18:15,470 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebcc56a27/b4fd48892cf0454eb4d1c8eb666349e1/FLAGd88526f9e [2020-10-20 06:18:15,742 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebcc56a27/b4fd48892cf0454eb4d1c8eb666349e1 [2020-10-20 06:18:15,746 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:18:15,751 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 06:18:15,752 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:18:15,753 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:18:15,756 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:18:15,757 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:18:15" (1/1) ... [2020-10-20 06:18:15,761 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7179b3dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:18:15, skipping insertion in model container [2020-10-20 06:18:15,761 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:18:15" (1/1) ... [2020-10-20 06:18:15,769 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:18:15,811 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:18:16,216 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:18:16,236 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:18:16,322 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:18:16,378 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:18:16,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:18:16 WrapperNode [2020-10-20 06:18:16,379 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:18:16,381 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:18:16,381 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:18:16,381 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:18:16,396 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:18:16" (1/1) ... [2020-10-20 06:18:16,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:18:16" (1/1) ... [2020-10-20 06:18:16,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:18:16" (1/1) ... [2020-10-20 06:18:16,434 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:18:16" (1/1) ... [2020-10-20 06:18:16,462 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:18:16" (1/1) ... [2020-10-20 06:18:16,468 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:18:16" (1/1) ... [2020-10-20 06:18:16,472 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:18:16" (1/1) ... [2020-10-20 06:18:16,478 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:18:16,479 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:18:16,479 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:18:16,479 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:18:16,480 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:18:16" (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 [2020-10-20 06:18:16,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 06:18:16,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:18:16,549 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-20 06:18:16,549 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 06:18:16,550 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-20 06:18:16,550 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-20 06:18:16,551 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-20 06:18:16,552 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-20 06:18:16,552 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-20 06:18:16,552 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-20 06:18:16,552 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-20 06:18:16,553 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-20 06:18:16,553 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-20 06:18:16,554 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-20 06:18:16,554 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-20 06:18:16,554 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-20 06:18:16,554 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-20 06:18:16,557 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-20 06:18:16,557 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-20 06:18:16,558 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-20 06:18:16,558 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-20 06:18:16,558 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-20 06:18:16,559 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-20 06:18:16,559 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-20 06:18:16,560 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-20 06:18:16,560 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-20 06:18:16,562 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-20 06:18:16,562 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-20 06:18:16,563 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-20 06:18:16,563 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-20 06:18:16,563 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-20 06:18:16,563 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-20 06:18:16,563 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-20 06:18:16,564 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-20 06:18:16,564 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-20 06:18:16,564 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-20 06:18:16,564 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-20 06:18:16,564 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-20 06:18:16,565 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-20 06:18:16,565 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-20 06:18:16,565 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-20 06:18:16,565 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-20 06:18:16,565 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-20 06:18:16,566 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-20 06:18:16,566 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-20 06:18:16,566 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-20 06:18:16,568 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-20 06:18:16,568 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-20 06:18:16,568 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-20 06:18:16,568 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-20 06:18:16,568 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-20 06:18:16,569 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-20 06:18:16,569 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-20 06:18:16,569 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-20 06:18:16,569 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-20 06:18:16,570 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-20 06:18:16,570 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-20 06:18:16,570 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-20 06:18:16,571 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-20 06:18:16,571 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-20 06:18:16,572 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-20 06:18:16,572 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-20 06:18:16,572 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-20 06:18:16,572 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-20 06:18:16,573 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-20 06:18:16,573 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-20 06:18:16,573 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-20 06:18:16,574 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-20 06:18:16,574 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-20 06:18:16,574 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-20 06:18:16,575 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-20 06:18:16,575 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-20 06:18:16,575 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-20 06:18:16,576 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-20 06:18:16,576 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-20 06:18:16,577 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-20 06:18:16,577 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-20 06:18:16,578 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-20 06:18:16,578 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-20 06:18:16,579 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-20 06:18:16,579 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-20 06:18:16,579 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-20 06:18:16,579 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-20 06:18:16,579 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-20 06:18:16,579 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-20 06:18:16,580 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-20 06:18:16,580 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-20 06:18:16,580 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-20 06:18:16,581 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-20 06:18:16,581 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-20 06:18:16,581 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-20 06:18:16,581 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-20 06:18:16,581 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-20 06:18:16,582 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-20 06:18:16,582 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-20 06:18:16,582 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-20 06:18:16,582 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-20 06:18:16,582 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-20 06:18:16,583 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-20 06:18:16,583 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-20 06:18:16,583 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-20 06:18:16,583 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-20 06:18:16,583 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-20 06:18:16,583 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-20 06:18:16,584 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-20 06:18:16,584 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-20 06:18:16,584 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-20 06:18:16,584 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-20 06:18:16,584 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-20 06:18:16,584 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-20 06:18:16,584 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-20 06:18:16,584 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-20 06:18:16,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 06:18:16,585 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 06:18:16,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-20 06:18:16,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-20 06:18:16,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 06:18:16,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-20 06:18:16,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 06:18:16,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 06:18:16,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 06:18:16,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 06:18:16,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:18:17,315 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:18:17,316 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-20 06:18:17,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:18:17 BoogieIcfgContainer [2020-10-20 06:18:17,318 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:18:17,320 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:18:17,320 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:18:17,323 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:18:17,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:18:15" (1/3) ... [2020-10-20 06:18:17,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60a5e141 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:18:17, skipping insertion in model container [2020-10-20 06:18:17,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:18:16" (2/3) ... [2020-10-20 06:18:17,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60a5e141 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:18:17, skipping insertion in model container [2020-10-20 06:18:17,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:18:17" (3/3) ... [2020-10-20 06:18:17,328 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-circular-1.i [2020-10-20 06:18:17,339 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:18:17,347 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 48 error locations. [2020-10-20 06:18:17,361 INFO L253 AbstractCegarLoop]: Starting to check reachability of 48 error locations. [2020-10-20 06:18:17,382 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:18:17,383 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 06:18:17,383 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:18:17,383 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:18:17,383 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:18:17,383 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:18:17,383 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:18:17,384 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:18:17,402 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states. [2020-10-20 06:18:17,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 06:18:17,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:17,412 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:18:17,412 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr46ENSURES_VIOLATIONMEMORY_LEAK, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-20 06:18:17,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:17,417 INFO L82 PathProgramCache]: Analyzing trace with hash -2076249251, now seen corresponding path program 1 times [2020-10-20 06:18:17,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:17,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521636034] [2020-10-20 06:18:17,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:17,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:17,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:17,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:17,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:18:17,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521636034] [2020-10-20 06:18:17,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:17,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:18:17,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072256307] [2020-10-20 06:18:17,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:18:17,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:17,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:18:17,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:18:17,689 INFO L87 Difference]: Start difference. First operand 118 states. Second operand 4 states. [2020-10-20 06:18:18,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:18,001 INFO L93 Difference]: Finished difference Result 119 states and 128 transitions. [2020-10-20 06:18:18,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:18:18,003 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-20 06:18:18,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:18,015 INFO L225 Difference]: With dead ends: 119 [2020-10-20 06:18:18,015 INFO L226 Difference]: Without dead ends: 116 [2020-10-20 06:18:18,017 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 [2020-10-20 06:18:18,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-20 06:18:18,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 106. [2020-10-20 06:18:18,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-20 06:18:18,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 114 transitions. [2020-10-20 06:18:18,064 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 114 transitions. Word has length 7 [2020-10-20 06:18:18,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:18,065 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 114 transitions. [2020-10-20 06:18:18,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:18:18,065 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 114 transitions. [2020-10-20 06:18:18,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 06:18:18,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:18,066 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:18:18,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 06:18:18,066 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr46ENSURES_VIOLATIONMEMORY_LEAK, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-20 06:18:18,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:18,067 INFO L82 PathProgramCache]: Analyzing trace with hash -2076249250, now seen corresponding path program 1 times [2020-10-20 06:18:18,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:18,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218121550] [2020-10-20 06:18:18,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:18,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:18,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:18,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:18,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:18:18,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218121550] [2020-10-20 06:18:18,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:18,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:18:18,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783096582] [2020-10-20 06:18:18,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:18:18,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:18,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:18:18,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:18:18,210 INFO L87 Difference]: Start difference. First operand 106 states and 114 transitions. Second operand 4 states. [2020-10-20 06:18:18,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:18,458 INFO L93 Difference]: Finished difference Result 114 states and 122 transitions. [2020-10-20 06:18:18,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:18:18,459 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-20 06:18:18,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:18,461 INFO L225 Difference]: With dead ends: 114 [2020-10-20 06:18:18,461 INFO L226 Difference]: Without dead ends: 114 [2020-10-20 06:18:18,462 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 [2020-10-20 06:18:18,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-20 06:18:18,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 102. [2020-10-20 06:18:18,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-20 06:18:18,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 110 transitions. [2020-10-20 06:18:18,472 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 110 transitions. Word has length 7 [2020-10-20 06:18:18,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:18,472 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 110 transitions. [2020-10-20 06:18:18,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:18:18,473 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 110 transitions. [2020-10-20 06:18:18,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 06:18:18,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:18,473 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:18:18,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 06:18:18,474 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr46ENSURES_VIOLATIONMEMORY_LEAK, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-20 06:18:18,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:18,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1174753481, now seen corresponding path program 1 times [2020-10-20 06:18:18,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:18,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675923388] [2020-10-20 06:18:18,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:18,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:18,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:18,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:18,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:18:18,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675923388] [2020-10-20 06:18:18,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:18,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:18:18,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672325237] [2020-10-20 06:18:18,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:18:18,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:18,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:18:18,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:18:18,564 INFO L87 Difference]: Start difference. First operand 102 states and 110 transitions. Second operand 5 states. [2020-10-20 06:18:18,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:18,836 INFO L93 Difference]: Finished difference Result 99 states and 108 transitions. [2020-10-20 06:18:18,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:18:18,836 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-20 06:18:18,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:18,837 INFO L225 Difference]: With dead ends: 99 [2020-10-20 06:18:18,838 INFO L226 Difference]: Without dead ends: 99 [2020-10-20 06:18:18,838 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 [2020-10-20 06:18:18,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-20 06:18:18,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 90. [2020-10-20 06:18:18,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-20 06:18:18,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 98 transitions. [2020-10-20 06:18:18,846 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 98 transitions. Word has length 12 [2020-10-20 06:18:18,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:18,846 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 98 transitions. [2020-10-20 06:18:18,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:18:18,846 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 98 transitions. [2020-10-20 06:18:18,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 06:18:18,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:18,847 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:18:18,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 06:18:18,848 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr46ENSURES_VIOLATIONMEMORY_LEAK, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-20 06:18:18,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:18,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1174753480, now seen corresponding path program 1 times [2020-10-20 06:18:18,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:18,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888211596] [2020-10-20 06:18:18,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:18,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:18,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:18,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:18,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:18:18,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888211596] [2020-10-20 06:18:18,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:18,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:18:18,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490757689] [2020-10-20 06:18:18,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:18:18,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:18,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:18:18,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:18:18,942 INFO L87 Difference]: Start difference. First operand 90 states and 98 transitions. Second operand 5 states. [2020-10-20 06:18:19,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:19,217 INFO L93 Difference]: Finished difference Result 114 states and 123 transitions. [2020-10-20 06:18:19,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:18:19,217 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-20 06:18:19,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:19,219 INFO L225 Difference]: With dead ends: 114 [2020-10-20 06:18:19,219 INFO L226 Difference]: Without dead ends: 114 [2020-10-20 06:18:19,220 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 [2020-10-20 06:18:19,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-20 06:18:19,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 98. [2020-10-20 06:18:19,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-20 06:18:19,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 109 transitions. [2020-10-20 06:18:19,229 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 109 transitions. Word has length 12 [2020-10-20 06:18:19,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:19,230 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 109 transitions. [2020-10-20 06:18:19,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:18:19,230 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 109 transitions. [2020-10-20 06:18:19,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 06:18:19,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:19,231 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:18:19,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 06:18:19,232 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr46ENSURES_VIOLATIONMEMORY_LEAK, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-20 06:18:19,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:19,232 INFO L82 PathProgramCache]: Analyzing trace with hash 638306557, now seen corresponding path program 1 times [2020-10-20 06:18:19,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:19,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5788246] [2020-10-20 06:18:19,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:19,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:19,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:19,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:19,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:18:19,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5788246] [2020-10-20 06:18:19,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:19,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 06:18:19,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700280123] [2020-10-20 06:18:19,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:18:19,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:19,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:18:19,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:18:19,341 INFO L87 Difference]: Start difference. First operand 98 states and 109 transitions. Second operand 6 states. [2020-10-20 06:18:19,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:19,709 INFO L93 Difference]: Finished difference Result 146 states and 161 transitions. [2020-10-20 06:18:19,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:18:19,709 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-20 06:18:19,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:19,711 INFO L225 Difference]: With dead ends: 146 [2020-10-20 06:18:19,711 INFO L226 Difference]: Without dead ends: 146 [2020-10-20 06:18:19,711 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 [2020-10-20 06:18:19,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-20 06:18:19,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 97. [2020-10-20 06:18:19,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-20 06:18:19,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 107 transitions. [2020-10-20 06:18:19,729 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 107 transitions. Word has length 14 [2020-10-20 06:18:19,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:19,729 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 107 transitions. [2020-10-20 06:18:19,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:18:19,730 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 107 transitions. [2020-10-20 06:18:19,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 06:18:19,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:19,732 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:18:19,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 06:18:19,733 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr46ENSURES_VIOLATIONMEMORY_LEAK, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-20 06:18:19,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:19,733 INFO L82 PathProgramCache]: Analyzing trace with hash 638306558, now seen corresponding path program 1 times [2020-10-20 06:18:19,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:19,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828571152] [2020-10-20 06:18:19,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:19,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:19,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:19,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:19,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:18:19,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828571152] [2020-10-20 06:18:19,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:19,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 06:18:19,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964657204] [2020-10-20 06:18:19,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:18:19,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:19,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:18:19,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:18:19,873 INFO L87 Difference]: Start difference. First operand 97 states and 107 transitions. Second operand 6 states. [2020-10-20 06:18:20,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:20,283 INFO L93 Difference]: Finished difference Result 147 states and 160 transitions. [2020-10-20 06:18:20,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 06:18:20,284 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-20 06:18:20,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:20,286 INFO L225 Difference]: With dead ends: 147 [2020-10-20 06:18:20,286 INFO L226 Difference]: Without dead ends: 147 [2020-10-20 06:18:20,286 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:18:20,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-20 06:18:20,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 96. [2020-10-20 06:18:20,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-20 06:18:20,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 105 transitions. [2020-10-20 06:18:20,293 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 105 transitions. Word has length 14 [2020-10-20 06:18:20,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:20,293 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 105 transitions. [2020-10-20 06:18:20,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:18:20,294 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 105 transitions. [2020-10-20 06:18:20,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 06:18:20,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:20,295 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:18:20,295 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 06:18:20,295 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr46ENSURES_VIOLATIONMEMORY_LEAK, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-20 06:18:20,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:20,295 INFO L82 PathProgramCache]: Analyzing trace with hash 36841868, now seen corresponding path program 1 times [2020-10-20 06:18:20,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:20,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728984100] [2020-10-20 06:18:20,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:20,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:20,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:20,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:20,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:18:20,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728984100] [2020-10-20 06:18:20,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:20,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-20 06:18:20,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932344688] [2020-10-20 06:18:20,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 06:18:20,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:20,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 06:18:20,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:18:20,444 INFO L87 Difference]: Start difference. First operand 96 states and 105 transitions. Second operand 9 states. [2020-10-20 06:18:20,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:20,860 INFO L93 Difference]: Finished difference Result 177 states and 192 transitions. [2020-10-20 06:18:20,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 06:18:20,860 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-10-20 06:18:20,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:20,861 INFO L225 Difference]: With dead ends: 177 [2020-10-20 06:18:20,861 INFO L226 Difference]: Without dead ends: 177 [2020-10-20 06:18:20,862 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 [2020-10-20 06:18:20,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-20 06:18:20,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 99. [2020-10-20 06:18:20,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-20 06:18:20,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 108 transitions. [2020-10-20 06:18:20,868 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 108 transitions. Word has length 18 [2020-10-20 06:18:20,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:20,868 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 108 transitions. [2020-10-20 06:18:20,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 06:18:20,869 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 108 transitions. [2020-10-20 06:18:20,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 06:18:20,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:20,869 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:18:20,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 06:18:20,870 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr46ENSURES_VIOLATIONMEMORY_LEAK, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-20 06:18:20,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:20,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1940851768, now seen corresponding path program 1 times [2020-10-20 06:18:20,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:20,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300371687] [2020-10-20 06:18:20,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:20,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:20,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:20,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:20,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:18:20,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300371687] [2020-10-20 06:18:20,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:20,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-20 06:18:20,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387938083] [2020-10-20 06:18:20,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 06:18:20,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:20,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 06:18:20,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:18:20,996 INFO L87 Difference]: Start difference. First operand 99 states and 108 transitions. Second operand 9 states. [2020-10-20 06:18:21,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:21,460 INFO L93 Difference]: Finished difference Result 140 states and 152 transitions. [2020-10-20 06:18:21,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-20 06:18:21,461 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2020-10-20 06:18:21,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:21,462 INFO L225 Difference]: With dead ends: 140 [2020-10-20 06:18:21,462 INFO L226 Difference]: Without dead ends: 140 [2020-10-20 06:18:21,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-20 06:18:21,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-20 06:18:21,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 101. [2020-10-20 06:18:21,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-20 06:18:21,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 111 transitions. [2020-10-20 06:18:21,468 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 111 transitions. Word has length 17 [2020-10-20 06:18:21,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:21,469 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 111 transitions. [2020-10-20 06:18:21,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 06:18:21,469 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 111 transitions. [2020-10-20 06:18:21,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 06:18:21,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:21,470 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:18:21,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 06:18:21,471 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr46ENSURES_VIOLATIONMEMORY_LEAK, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-20 06:18:21,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:21,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1940851769, now seen corresponding path program 1 times [2020-10-20 06:18:21,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:21,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345494178] [2020-10-20 06:18:21,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:21,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:21,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:21,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:21,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:18:21,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345494178] [2020-10-20 06:18:21,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:21,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-20 06:18:21,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049533009] [2020-10-20 06:18:21,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 06:18:21,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:21,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 06:18:21,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:18:21,631 INFO L87 Difference]: Start difference. First operand 101 states and 111 transitions. Second operand 9 states. [2020-10-20 06:18:22,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:22,123 INFO L93 Difference]: Finished difference Result 171 states and 186 transitions. [2020-10-20 06:18:22,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 06:18:22,123 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2020-10-20 06:18:22,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:22,125 INFO L225 Difference]: With dead ends: 171 [2020-10-20 06:18:22,125 INFO L226 Difference]: Without dead ends: 171 [2020-10-20 06:18:22,125 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 [2020-10-20 06:18:22,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-20 06:18:22,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 113. [2020-10-20 06:18:22,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-20 06:18:22,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 129 transitions. [2020-10-20 06:18:22,131 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 129 transitions. Word has length 17 [2020-10-20 06:18:22,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:22,131 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 129 transitions. [2020-10-20 06:18:22,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 06:18:22,132 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 129 transitions. [2020-10-20 06:18:22,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 06:18:22,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:22,133 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:18:22,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-20 06:18:22,138 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr46ENSURES_VIOLATIONMEMORY_LEAK, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-20 06:18:22,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:22,139 INFO L82 PathProgramCache]: Analyzing trace with hash 953731263, now seen corresponding path program 1 times [2020-10-20 06:18:22,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:22,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569321978] [2020-10-20 06:18:22,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:22,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:22,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:22,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:22,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:18:22,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569321978] [2020-10-20 06:18:22,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:22,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-20 06:18:22,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415021145] [2020-10-20 06:18:22,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 06:18:22,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:22,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 06:18:22,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:18:22,285 INFO L87 Difference]: Start difference. First operand 113 states and 129 transitions. Second operand 10 states. [2020-10-20 06:18:22,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:22,743 INFO L93 Difference]: Finished difference Result 121 states and 138 transitions. [2020-10-20 06:18:22,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-20 06:18:22,744 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2020-10-20 06:18:22,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:22,745 INFO L225 Difference]: With dead ends: 121 [2020-10-20 06:18:22,745 INFO L226 Difference]: Without dead ends: 121 [2020-10-20 06:18:22,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-20 06:18:22,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-20 06:18:22,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 112. [2020-10-20 06:18:22,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-20 06:18:22,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 128 transitions. [2020-10-20 06:18:22,750 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 128 transitions. Word has length 18 [2020-10-20 06:18:22,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:22,750 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 128 transitions. [2020-10-20 06:18:22,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 06:18:22,750 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 128 transitions. [2020-10-20 06:18:22,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 06:18:22,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:22,751 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:18:22,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-20 06:18:22,751 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr46ENSURES_VIOLATIONMEMORY_LEAK, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-20 06:18:22,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:22,752 INFO L82 PathProgramCache]: Analyzing trace with hash 953731264, now seen corresponding path program 1 times [2020-10-20 06:18:22,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:22,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481263112] [2020-10-20 06:18:22,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:22,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:22,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:22,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:22,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:18:22,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481263112] [2020-10-20 06:18:22,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:22,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-20 06:18:22,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468923991] [2020-10-20 06:18:22,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-20 06:18:22,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:22,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-20 06:18:22,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-20 06:18:22,901 INFO L87 Difference]: Start difference. First operand 112 states and 128 transitions. Second operand 11 states. [2020-10-20 06:18:23,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:23,579 INFO L93 Difference]: Finished difference Result 116 states and 133 transitions. [2020-10-20 06:18:23,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-20 06:18:23,580 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 18 [2020-10-20 06:18:23,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:23,582 INFO L225 Difference]: With dead ends: 116 [2020-10-20 06:18:23,582 INFO L226 Difference]: Without dead ends: 116 [2020-10-20 06:18:23,583 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2020-10-20 06:18:23,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-20 06:18:23,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 101. [2020-10-20 06:18:23,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-20 06:18:23,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 117 transitions. [2020-10-20 06:18:23,587 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 117 transitions. Word has length 18 [2020-10-20 06:18:23,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:23,588 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 117 transitions. [2020-10-20 06:18:23,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-20 06:18:23,588 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 117 transitions. [2020-10-20 06:18:23,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-20 06:18:23,588 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:23,589 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] [2020-10-20 06:18:23,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-20 06:18:23,589 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr46ENSURES_VIOLATIONMEMORY_LEAK, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-20 06:18:23,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:23,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1065374216, now seen corresponding path program 1 times [2020-10-20 06:18:23,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:23,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572104314] [2020-10-20 06:18:23,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:23,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:23,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:23,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:23,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:18:23,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572104314] [2020-10-20 06:18:23,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:23,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-20 06:18:23,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778372344] [2020-10-20 06:18:23,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 06:18:23,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:23,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 06:18:23,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:18:23,757 INFO L87 Difference]: Start difference. First operand 101 states and 117 transitions. Second operand 10 states. [2020-10-20 06:18:24,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:24,254 INFO L93 Difference]: Finished difference Result 147 states and 162 transitions. [2020-10-20 06:18:24,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-20 06:18:24,255 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-10-20 06:18:24,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:24,256 INFO L225 Difference]: With dead ends: 147 [2020-10-20 06:18:24,256 INFO L226 Difference]: Without dead ends: 147 [2020-10-20 06:18:24,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-20 06:18:24,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-20 06:18:24,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 101. [2020-10-20 06:18:24,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-20 06:18:24,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 116 transitions. [2020-10-20 06:18:24,261 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 116 transitions. Word has length 20 [2020-10-20 06:18:24,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:24,261 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 116 transitions. [2020-10-20 06:18:24,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 06:18:24,262 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 116 transitions. [2020-10-20 06:18:24,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-20 06:18:24,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:24,265 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] [2020-10-20 06:18:24,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-20 06:18:24,266 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr46ENSURES_VIOLATIONMEMORY_LEAK, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-20 06:18:24,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:24,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1065374217, now seen corresponding path program 1 times [2020-10-20 06:18:24,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:24,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295400928] [2020-10-20 06:18:24,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:24,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:24,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:24,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:24,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:18:24,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295400928] [2020-10-20 06:18:24,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:24,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-20 06:18:24,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588522199] [2020-10-20 06:18:24,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 06:18:24,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:24,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 06:18:24,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:18:24,469 INFO L87 Difference]: Start difference. First operand 101 states and 116 transitions. Second operand 9 states. [2020-10-20 06:18:24,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:24,959 INFO L93 Difference]: Finished difference Result 157 states and 172 transitions. [2020-10-20 06:18:24,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 06:18:24,959 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2020-10-20 06:18:24,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:24,960 INFO L225 Difference]: With dead ends: 157 [2020-10-20 06:18:24,961 INFO L226 Difference]: Without dead ends: 157 [2020-10-20 06:18:24,961 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 [2020-10-20 06:18:24,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-20 06:18:24,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 101. [2020-10-20 06:18:24,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-20 06:18:24,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 115 transitions. [2020-10-20 06:18:24,967 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 115 transitions. Word has length 20 [2020-10-20 06:18:24,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:24,967 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 115 transitions. [2020-10-20 06:18:24,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 06:18:24,967 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 115 transitions. [2020-10-20 06:18:24,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-20 06:18:24,969 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:24,970 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] [2020-10-20 06:18:24,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-20 06:18:24,970 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr46ENSURES_VIOLATIONMEMORY_LEAK, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-20 06:18:24,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:24,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1333152464, now seen corresponding path program 1 times [2020-10-20 06:18:24,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:24,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914431783] [2020-10-20 06:18:24,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:24,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:25,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:25,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:25,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:18:25,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914431783] [2020-10-20 06:18:25,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:25,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-20 06:18:25,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998861230] [2020-10-20 06:18:25,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 06:18:25,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:25,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 06:18:25,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-20 06:18:25,073 INFO L87 Difference]: Start difference. First operand 101 states and 115 transitions. Second operand 8 states. [2020-10-20 06:18:25,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:25,458 INFO L93 Difference]: Finished difference Result 137 states and 155 transitions. [2020-10-20 06:18:25,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-20 06:18:25,458 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-10-20 06:18:25,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:25,460 INFO L225 Difference]: With dead ends: 137 [2020-10-20 06:18:25,460 INFO L226 Difference]: Without dead ends: 137 [2020-10-20 06:18:25,461 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 [2020-10-20 06:18:25,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-10-20 06:18:25,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 102. [2020-10-20 06:18:25,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-20 06:18:25,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 117 transitions. [2020-10-20 06:18:25,465 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 117 transitions. Word has length 21 [2020-10-20 06:18:25,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:25,465 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 117 transitions. [2020-10-20 06:18:25,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 06:18:25,465 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 117 transitions. [2020-10-20 06:18:25,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-20 06:18:25,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:25,466 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:18:25,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-20 06:18:25,467 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr46ENSURES_VIOLATIONMEMORY_LEAK, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-20 06:18:25,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:25,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1333152463, now seen corresponding path program 1 times [2020-10-20 06:18:25,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:25,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515919548] [2020-10-20 06:18:25,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:25,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:25,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:25,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:25,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:18:25,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515919548] [2020-10-20 06:18:25,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:25,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-20 06:18:25,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769710256] [2020-10-20 06:18:25,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-20 06:18:25,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:25,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-20 06:18:25,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-20 06:18:25,708 INFO L87 Difference]: Start difference. First operand 102 states and 117 transitions. Second operand 12 states. [2020-10-20 06:18:26,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:26,347 INFO L93 Difference]: Finished difference Result 147 states and 163 transitions. [2020-10-20 06:18:26,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-20 06:18:26,350 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 21 [2020-10-20 06:18:26,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:26,352 INFO L225 Difference]: With dead ends: 147 [2020-10-20 06:18:26,352 INFO L226 Difference]: Without dead ends: 147 [2020-10-20 06:18:26,352 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 [2020-10-20 06:18:26,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-20 06:18:26,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 121. [2020-10-20 06:18:26,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-20 06:18:26,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 150 transitions. [2020-10-20 06:18:26,357 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 150 transitions. Word has length 21 [2020-10-20 06:18:26,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:26,357 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 150 transitions. [2020-10-20 06:18:26,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-20 06:18:26,357 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 150 transitions. [2020-10-20 06:18:26,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-20 06:18:26,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:26,358 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] [2020-10-20 06:18:26,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-20 06:18:26,359 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr46ENSURES_VIOLATIONMEMORY_LEAK, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-20 06:18:26,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:26,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1259258721, now seen corresponding path program 1 times [2020-10-20 06:18:26,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:26,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629782029] [2020-10-20 06:18:26,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:26,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:26,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:26,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:26,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:18:26,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629782029] [2020-10-20 06:18:26,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:26,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-20 06:18:26,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702430882] [2020-10-20 06:18:26,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-20 06:18:26,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:26,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-20 06:18:26,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-20 06:18:26,608 INFO L87 Difference]: Start difference. First operand 121 states and 150 transitions. Second operand 12 states. [2020-10-20 06:18:27,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:27,240 INFO L93 Difference]: Finished difference Result 160 states and 175 transitions. [2020-10-20 06:18:27,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-20 06:18:27,241 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-20 06:18:27,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:27,242 INFO L225 Difference]: With dead ends: 160 [2020-10-20 06:18:27,243 INFO L226 Difference]: Without dead ends: 160 [2020-10-20 06:18:27,243 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 [2020-10-20 06:18:27,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-20 06:18:27,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 122. [2020-10-20 06:18:27,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-20 06:18:27,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 151 transitions. [2020-10-20 06:18:27,247 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 151 transitions. Word has length 23 [2020-10-20 06:18:27,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:27,248 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 151 transitions. [2020-10-20 06:18:27,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-20 06:18:27,248 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 151 transitions. [2020-10-20 06:18:27,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-20 06:18:27,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:27,249 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] [2020-10-20 06:18:27,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-20 06:18:27,249 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr46ENSURES_VIOLATIONMEMORY_LEAK, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-20 06:18:27,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:27,249 INFO L82 PathProgramCache]: Analyzing trace with hash -382314453, now seen corresponding path program 1 times [2020-10-20 06:18:27,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:27,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465412240] [2020-10-20 06:18:27,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:27,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:27,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:27,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:27,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:18:27,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465412240] [2020-10-20 06:18:27,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:27,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-20 06:18:27,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278595839] [2020-10-20 06:18:27,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 06:18:27,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:27,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 06:18:27,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:18:27,383 INFO L87 Difference]: Start difference. First operand 122 states and 151 transitions. Second operand 9 states. [2020-10-20 06:18:27,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:27,790 INFO L93 Difference]: Finished difference Result 153 states and 170 transitions. [2020-10-20 06:18:27,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 06:18:27,791 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-10-20 06:18:27,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:27,792 INFO L225 Difference]: With dead ends: 153 [2020-10-20 06:18:27,792 INFO L226 Difference]: Without dead ends: 153 [2020-10-20 06:18:27,793 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 [2020-10-20 06:18:27,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-20 06:18:27,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 123. [2020-10-20 06:18:27,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-20 06:18:27,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 152 transitions. [2020-10-20 06:18:27,798 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 152 transitions. Word has length 24 [2020-10-20 06:18:27,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:27,798 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 152 transitions. [2020-10-20 06:18:27,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 06:18:27,798 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 152 transitions. [2020-10-20 06:18:27,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-20 06:18:27,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:27,799 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] [2020-10-20 06:18:27,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-20 06:18:27,799 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr46ENSURES_VIOLATIONMEMORY_LEAK, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-20 06:18:27,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:27,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1758832385, now seen corresponding path program 1 times [2020-10-20 06:18:27,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:27,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584564878] [2020-10-20 06:18:27,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:27,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:27,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:27,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:27,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:18:27,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584564878] [2020-10-20 06:18:27,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:27,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-20 06:18:27,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439734739] [2020-10-20 06:18:27,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-20 06:18:27,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:27,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-20 06:18:27,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-20 06:18:27,921 INFO L87 Difference]: Start difference. First operand 123 states and 152 transitions. Second operand 11 states. [2020-10-20 06:18:28,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:28,504 INFO L93 Difference]: Finished difference Result 135 states and 163 transitions. [2020-10-20 06:18:28,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-20 06:18:28,505 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-20 06:18:28,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:28,506 INFO L225 Difference]: With dead ends: 135 [2020-10-20 06:18:28,506 INFO L226 Difference]: Without dead ends: 135 [2020-10-20 06:18:28,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2020-10-20 06:18:28,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-20 06:18:28,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 122. [2020-10-20 06:18:28,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-20 06:18:28,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 150 transitions. [2020-10-20 06:18:28,511 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 150 transitions. Word has length 25 [2020-10-20 06:18:28,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:28,511 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 150 transitions. [2020-10-20 06:18:28,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-20 06:18:28,511 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 150 transitions. [2020-10-20 06:18:28,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-20 06:18:28,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:28,512 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] [2020-10-20 06:18:28,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-20 06:18:28,513 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr46ENSURES_VIOLATIONMEMORY_LEAK, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-20 06:18:28,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:28,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1033199793, now seen corresponding path program 1 times [2020-10-20 06:18:28,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:28,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975864640] [2020-10-20 06:18:28,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:28,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:28,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:28,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:28,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:18:28,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975864640] [2020-10-20 06:18:28,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:28,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-20 06:18:28,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067255355] [2020-10-20 06:18:28,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 06:18:28,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:28,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 06:18:28,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:18:28,630 INFO L87 Difference]: Start difference. First operand 122 states and 150 transitions. Second operand 9 states. [2020-10-20 06:18:28,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:28,942 INFO L93 Difference]: Finished difference Result 144 states and 161 transitions. [2020-10-20 06:18:28,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 06:18:28,943 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-20 06:18:28,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:28,945 INFO L225 Difference]: With dead ends: 144 [2020-10-20 06:18:28,945 INFO L226 Difference]: Without dead ends: 144 [2020-10-20 06:18:28,945 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 [2020-10-20 06:18:28,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-20 06:18:28,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 124. [2020-10-20 06:18:28,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-20 06:18:28,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 152 transitions. [2020-10-20 06:18:28,950 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 152 transitions. Word has length 25 [2020-10-20 06:18:28,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:28,950 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 152 transitions. [2020-10-20 06:18:28,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 06:18:28,950 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 152 transitions. [2020-10-20 06:18:28,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-20 06:18:28,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:28,951 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] [2020-10-20 06:18:28,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-20 06:18:28,952 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr46ENSURES_VIOLATIONMEMORY_LEAK, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-20 06:18:28,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:28,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1138174537, now seen corresponding path program 1 times [2020-10-20 06:18:28,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:28,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194511111] [2020-10-20 06:18:28,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:28,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:29,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:29,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:29,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:18:29,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194511111] [2020-10-20 06:18:29,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:29,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-20 06:18:29,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863974197] [2020-10-20 06:18:29,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-20 06:18:29,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:29,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-20 06:18:29,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-20 06:18:29,215 INFO L87 Difference]: Start difference. First operand 124 states and 152 transitions. Second operand 13 states. [2020-10-20 06:18:29,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:29,790 INFO L93 Difference]: Finished difference Result 145 states and 159 transitions. [2020-10-20 06:18:29,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-20 06:18:29,790 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 26 [2020-10-20 06:18:29,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:29,792 INFO L225 Difference]: With dead ends: 145 [2020-10-20 06:18:29,792 INFO L226 Difference]: Without dead ends: 145 [2020-10-20 06:18:29,793 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 [2020-10-20 06:18:29,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-20 06:18:29,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 124. [2020-10-20 06:18:29,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-20 06:18:29,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 151 transitions. [2020-10-20 06:18:29,796 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 151 transitions. Word has length 26 [2020-10-20 06:18:29,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:29,796 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 151 transitions. [2020-10-20 06:18:29,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-20 06:18:29,797 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 151 transitions. [2020-10-20 06:18:29,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-20 06:18:29,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:29,797 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] [2020-10-20 06:18:29,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-20 06:18:29,798 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr46ENSURES_VIOLATIONMEMORY_LEAK, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-20 06:18:29,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:29,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1902573219, now seen corresponding path program 1 times [2020-10-20 06:18:29,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:29,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617638805] [2020-10-20 06:18:29,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:29,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:29,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:29,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:29,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:18:29,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617638805] [2020-10-20 06:18:29,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:29,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 06:18:29,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762636970] [2020-10-20 06:18:29,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:18:29,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:29,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:18:29,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:18:29,857 INFO L87 Difference]: Start difference. First operand 124 states and 151 transitions. Second operand 6 states. [2020-10-20 06:18:30,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:30,075 INFO L93 Difference]: Finished difference Result 125 states and 152 transitions. [2020-10-20 06:18:30,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 06:18:30,075 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-10-20 06:18:30,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:30,078 INFO L225 Difference]: With dead ends: 125 [2020-10-20 06:18:30,078 INFO L226 Difference]: Without dead ends: 125 [2020-10-20 06:18:30,079 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 [2020-10-20 06:18:30,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-20 06:18:30,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 123. [2020-10-20 06:18:30,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-20 06:18:30,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 148 transitions. [2020-10-20 06:18:30,084 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 148 transitions. Word has length 25 [2020-10-20 06:18:30,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:30,084 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 148 transitions. [2020-10-20 06:18:30,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:18:30,084 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 148 transitions. [2020-10-20 06:18:30,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-20 06:18:30,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:30,085 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] [2020-10-20 06:18:30,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-20 06:18:30,085 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr46ENSURES_VIOLATIONMEMORY_LEAK, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-20 06:18:30,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:30,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1902573220, now seen corresponding path program 1 times [2020-10-20 06:18:30,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:30,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351673941] [2020-10-20 06:18:30,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:30,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:30,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:30,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:30,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:18:30,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351673941] [2020-10-20 06:18:30,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:30,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-20 06:18:30,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544971595] [2020-10-20 06:18:30,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-20 06:18:30,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:30,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-20 06:18:30,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-20 06:18:30,240 INFO L87 Difference]: Start difference. First operand 123 states and 148 transitions. Second operand 11 states. [2020-10-20 06:18:30,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:30,804 INFO L93 Difference]: Finished difference Result 141 states and 155 transitions. [2020-10-20 06:18:30,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-20 06:18:30,808 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-20 06:18:30,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:30,809 INFO L225 Difference]: With dead ends: 141 [2020-10-20 06:18:30,809 INFO L226 Difference]: Without dead ends: 141 [2020-10-20 06:18:30,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2020-10-20 06:18:30,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-20 06:18:30,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 123. [2020-10-20 06:18:30,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-20 06:18:30,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 147 transitions. [2020-10-20 06:18:30,812 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 147 transitions. Word has length 25 [2020-10-20 06:18:30,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:30,813 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 147 transitions. [2020-10-20 06:18:30,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-20 06:18:30,813 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 147 transitions. [2020-10-20 06:18:30,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-20 06:18:30,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:30,813 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] [2020-10-20 06:18:30,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-20 06:18:30,814 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr46ENSURES_VIOLATIONMEMORY_LEAK, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-20 06:18:30,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:30,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1963005678, now seen corresponding path program 1 times [2020-10-20 06:18:30,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:30,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090869091] [2020-10-20 06:18:30,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:30,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:30,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:31,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:31,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:18:31,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090869091] [2020-10-20 06:18:31,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:31,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-20 06:18:31,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802312322] [2020-10-20 06:18:31,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 06:18:31,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:31,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 06:18:31,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:18:31,006 INFO L87 Difference]: Start difference. First operand 123 states and 147 transitions. Second operand 10 states. [2020-10-20 06:18:31,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:31,496 INFO L93 Difference]: Finished difference Result 139 states and 152 transitions. [2020-10-20 06:18:31,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-20 06:18:31,497 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-10-20 06:18:31,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:31,498 INFO L225 Difference]: With dead ends: 139 [2020-10-20 06:18:31,499 INFO L226 Difference]: Without dead ends: 139 [2020-10-20 06:18:31,499 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 [2020-10-20 06:18:31,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-20 06:18:31,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 123. [2020-10-20 06:18:31,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-20 06:18:31,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 146 transitions. [2020-10-20 06:18:31,503 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 146 transitions. Word has length 26 [2020-10-20 06:18:31,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:31,503 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 146 transitions. [2020-10-20 06:18:31,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 06:18:31,503 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 146 transitions. [2020-10-20 06:18:31,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-20 06:18:31,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:31,504 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] [2020-10-20 06:18:31,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-20 06:18:31,504 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr46ENSURES_VIOLATIONMEMORY_LEAK, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-20 06:18:31,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:31,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1501107432, now seen corresponding path program 1 times [2020-10-20 06:18:31,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:31,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415409163] [2020-10-20 06:18:31,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:31,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:31,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:18:31,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:18:31,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:18:31,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415409163] [2020-10-20 06:18:31,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:18:31,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:18:31,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94722045] [2020-10-20 06:18:31,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:18:31,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:18:31,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:18:31,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:18:31,549 INFO L87 Difference]: Start difference. First operand 123 states and 146 transitions. Second operand 4 states. [2020-10-20 06:18:31,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:18:31,685 INFO L93 Difference]: Finished difference Result 190 states and 220 transitions. [2020-10-20 06:18:31,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:18:31,687 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-10-20 06:18:31,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:18:31,688 INFO L225 Difference]: With dead ends: 190 [2020-10-20 06:18:31,688 INFO L226 Difference]: Without dead ends: 190 [2020-10-20 06:18:31,688 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 [2020-10-20 06:18:31,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-20 06:18:31,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 138. [2020-10-20 06:18:31,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-20 06:18:31,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 163 transitions. [2020-10-20 06:18:31,697 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 163 transitions. Word has length 29 [2020-10-20 06:18:31,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:18:31,698 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 163 transitions. [2020-10-20 06:18:31,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:18:31,698 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 163 transitions. [2020-10-20 06:18:31,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-20 06:18:31,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:18:31,699 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] [2020-10-20 06:18:31,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-20 06:18:31,699 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr40ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr46ENSURES_VIOLATIONMEMORY_LEAK, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-20 06:18:31,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:18:31,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1665501681, now seen corresponding path program 1 times [2020-10-20 06:18:31,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:18:31,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275673776] [2020-10-20 06:18:31,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:18:31,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:18:31,713 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:18:31,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:18:31,725 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:18:31,761 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:18:31,761 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 06:18:31,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-20 06:18:31,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:18:31 BoogieIcfgContainer [2020-10-20 06:18:31,809 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:18:31,810 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:18:31,810 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:18:31,810 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:18:31,811 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:18:17" (3/4) ... [2020-10-20 06:18:31,813 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 06:18:31,862 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 06:18:31,862 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:18:31,864 INFO L168 Benchmark]: Toolchain (without parser) took 16116.79 ms. Allocated memory was 37.2 MB in the beginning and 115.9 MB in the end (delta: 78.6 MB). Free memory was 18.0 MB in the beginning and 80.2 MB in the end (delta: -62.1 MB). Peak memory consumption was 16.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:18:31,865 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 34.6 MB. Free memory was 11.4 MB in the beginning and 11.3 MB in the end (delta: 47.7 kB). Peak memory consumption was 47.7 kB. Max. memory is 14.3 GB. [2020-10-20 06:18:31,866 INFO L168 Benchmark]: CACSL2BoogieTranslator took 628.02 ms. Allocated memory was 37.2 MB in the beginning and 46.7 MB in the end (delta: 9.4 MB). Free memory was 17.2 MB in the beginning and 29.1 MB in the end (delta: -11.9 MB). Peak memory consumption was 16.1 MB. Max. memory is 14.3 GB. [2020-10-20 06:18:31,866 INFO L168 Benchmark]: Boogie Preprocessor took 97.81 ms. Allocated memory is still 46.7 MB. Free memory was 29.1 MB in the beginning and 26.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:18:31,867 INFO L168 Benchmark]: RCFGBuilder took 839.51 ms. Allocated memory was 46.7 MB in the beginning and 49.8 MB in the end (delta: 3.1 MB). Free memory was 25.8 MB in the beginning and 23.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 19.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:18:31,868 INFO L168 Benchmark]: TraceAbstraction took 14489.78 ms. Allocated memory was 49.8 MB in the beginning and 115.9 MB in the end (delta: 66.1 MB). Free memory was 23.2 MB in the beginning and 82.0 MB in the end (delta: -58.8 MB). Peak memory consumption was 7.3 MB. Max. memory is 14.3 GB. [2020-10-20 06:18:31,868 INFO L168 Benchmark]: Witness Printer took 52.44 ms. Allocated memory is still 115.9 MB. Free memory was 82.0 MB in the beginning and 80.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. [2020-10-20 06:18:31,871 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 34.6 MB. Free memory was 11.4 MB in the beginning and 11.3 MB in the end (delta: 47.7 kB). Peak memory consumption was 47.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 628.02 ms. Allocated memory was 37.2 MB in the beginning and 46.7 MB in the end (delta: 9.4 MB). Free memory was 17.2 MB in the beginning and 29.1 MB in the end (delta: -11.9 MB). Peak memory consumption was 16.1 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 97.81 ms. Allocated memory is still 46.7 MB. Free memory was 29.1 MB in the beginning and 26.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 14.3 GB. * RCFGBuilder took 839.51 ms. Allocated memory was 46.7 MB in the beginning and 49.8 MB in the end (delta: 3.1 MB). Free memory was 25.8 MB in the beginning and 23.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 19.2 MB. Max. memory is 14.3 GB. * TraceAbstraction took 14489.78 ms. Allocated memory was 49.8 MB in the beginning and 115.9 MB in the end (delta: 66.1 MB). Free memory was 23.2 MB in the beginning and 82.0 MB in the end (delta: -58.8 MB). Peak memory consumption was 7.3 MB. Max. memory is 14.3 GB. * Witness Printer took 52.44 ms. Allocated memory is still 115.9 MB. Free memory was 82.0 MB in the beginning and 80.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 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: [L997] SLL* head = malloc(sizeof(SLL)); VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L998] head->next = head VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L999] head->data = 0 VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1001] SLL* x = head; [L1002] int state = 1; VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}] [L1005] COND FALSE !(__VERIFIER_nondet_int()) [L1027] x->data = state VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}] [L1029] EXPR head->next VAL [head={-1:0}, head->next={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}] [L1029] x = head->next [L1030] COND FALSE !(!(((void*)0) != x)) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}] [L1032] EXPR x->data VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}, x->data=1] [L1032] COND TRUE x->data != 0 [L1034] EXPR x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}, x->next={-1:0}] [L1034] 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] [L1034] 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] [L1034] 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] [L1034] 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] [L1034] 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] [L1034] 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] [L1034] COND TRUE !(x->next->data != 0 && x->data > x->next->data) [L1034] CALL reach_error() [L985] COND FALSE !(0) [L985] __assert_fail ("0", "dll-circular-1.c", 14, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 118 locations, 48 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 14.3s, OverallIterations: 25, TraceHistogramMax: 1, AutomataDifference: 10.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1618 SDtfs, 4252 SDslu, 4800 SDs, 0 SdLazy, 7917 SolverSat, 458 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 343 GetRequests, 68 SyntacticMatches, 3 SemanticMatches, 272 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 4.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=138occurred 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: 0.1s AutomataMinimizationTime, 24 MinimizatonAttempts, 719 StatesRemovedByMinimization, 24 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 494 NumberOfCodeBlocks, 494 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 440 ConstructedInterpolants, 0 QuantifiedInterpolants, 79160 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 24 InterpolantComputations, 24 PerfectInterpolantSequences, 0/0 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...