/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 11:23:21,442 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 11:23:21,445 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 11:23:21,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 11:23:21,458 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 11:23:21,460 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 11:23:21,461 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 11:23:21,463 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 11:23:21,464 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 11:23:21,465 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 11:23:21,466 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 11:23:21,468 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 11:23:21,468 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 11:23:21,469 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 11:23:21,470 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 11:23:21,471 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 11:23:21,472 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 11:23:21,473 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 11:23:21,474 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 11:23:21,476 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 11:23:21,478 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 11:23:21,479 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 11:23:21,480 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 11:23:21,481 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 11:23:21,483 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 11:23:21,483 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 11:23:21,484 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 11:23:21,485 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 11:23:21,485 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 11:23:21,486 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 11:23:21,486 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 11:23:21,487 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 11:23:21,487 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 11:23:21,488 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 11:23:21,489 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 11:23:21,489 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 11:23:21,490 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 11:23:21,490 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 11:23:21,490 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 11:23:21,494 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 11:23:21,495 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 11:23:21,496 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 11:23:21,511 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 11:23:21,512 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 11:23:21,513 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 11:23:21,513 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 11:23:21,513 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 11:23:21,514 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 11:23:21,514 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 11:23:21,514 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 11:23:21,514 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 11:23:21,514 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 11:23:21,514 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 11:23:21,515 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 11:23:21,515 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 11:23:21,515 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 11:23:21,515 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 11:23:21,515 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 11:23:21,516 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 11:23:21,516 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 11:23:21,516 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 11:23:21,516 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 11:23:21,516 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 11:23:21,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 11:23:21,517 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 11:23:21,517 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 11:23:21,517 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 11:23:21,517 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 11:23:21,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:23:21,518 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 11:23:21,518 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 11:23:21,518 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-21 11:23:21,842 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 11:23:21,857 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 11:23:21,861 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 11:23:21,862 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 11:23:21,863 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 11:23:21,864 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i [2020-07-21 11:23:21,935 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/767301647/516091a600bf445f9a364faf67d32262/FLAGa149dd353 [2020-07-21 11:23:22,514 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 11:23:22,515 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i [2020-07-21 11:23:22,531 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/767301647/516091a600bf445f9a364faf67d32262/FLAGa149dd353 [2020-07-21 11:23:22,831 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/767301647/516091a600bf445f9a364faf67d32262 [2020-07-21 11:23:22,839 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 11:23:22,842 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 11:23:22,843 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 11:23:22,843 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 11:23:22,847 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 11:23:22,848 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:23:22" (1/1) ... [2020-07-21 11:23:22,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@367ef84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:23:22, skipping insertion in model container [2020-07-21 11:23:22,851 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:23:22" (1/1) ... [2020-07-21 11:23:22,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 11:23:22,926 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 11:23:23,402 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 11:23:23,422 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 11:23:23,509 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 11:23:23,569 INFO L208 MainTranslator]: Completed translation [2020-07-21 11:23:23,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:23:23 WrapperNode [2020-07-21 11:23:23,569 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 11:23:23,571 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 11:23:23,571 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 11:23:23,571 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 11:23:23,583 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:23:23" (1/1) ... [2020-07-21 11:23:23,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:23:23" (1/1) ... [2020-07-21 11:23:23,609 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:23:23" (1/1) ... [2020-07-21 11:23:23,610 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:23:23" (1/1) ... [2020-07-21 11:23:23,630 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:23:23" (1/1) ... [2020-07-21 11:23:23,642 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:23:23" (1/1) ... [2020-07-21 11:23:23,646 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:23:23" (1/1) ... [2020-07-21 11:23:23,652 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 11:23:23,653 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 11:23:23,653 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 11:23:23,653 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 11:23:23,654 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:23:23" (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 [2020-07-21 11:23:23,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 11:23:23,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 11:23:23,722 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 11:23:23,723 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-21 11:23:23,724 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-21 11:23:23,724 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-21 11:23:23,724 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-21 11:23:23,725 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-21 11:23:23,725 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-21 11:23:23,725 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-21 11:23:23,725 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-21 11:23:23,725 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-21 11:23:23,726 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-21 11:23:23,726 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-21 11:23:23,726 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-21 11:23:23,726 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-21 11:23:23,726 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-21 11:23:23,727 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-21 11:23:23,727 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-21 11:23:23,727 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-21 11:23:23,727 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-21 11:23:23,727 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-21 11:23:23,728 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-21 11:23:23,728 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-21 11:23:23,728 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-21 11:23:23,731 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-21 11:23:23,731 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-21 11:23:23,731 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-21 11:23:23,731 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-21 11:23:23,731 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-21 11:23:23,731 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-21 11:23:23,732 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-21 11:23:23,732 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-21 11:23:23,732 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-21 11:23:23,732 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-21 11:23:23,732 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-21 11:23:23,732 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-21 11:23:23,733 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-21 11:23:23,733 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-21 11:23:23,733 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-21 11:23:23,733 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-21 11:23:23,733 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-21 11:23:23,733 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-21 11:23:23,733 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-21 11:23:23,734 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-21 11:23:23,734 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-21 11:23:23,734 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-21 11:23:23,734 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-21 11:23:23,734 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-21 11:23:23,734 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-21 11:23:23,734 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-21 11:23:23,734 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-21 11:23:23,734 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-21 11:23:23,734 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 11:23:23,735 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-21 11:23:23,735 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-21 11:23:23,735 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 11:23:23,735 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-21 11:23:23,735 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-21 11:23:23,735 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-21 11:23:23,735 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-21 11:23:23,735 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-21 11:23:23,736 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 11:23:23,736 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-21 11:23:23,736 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-21 11:23:23,736 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-21 11:23:23,736 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 11:23:23,736 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-21 11:23:23,737 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-21 11:23:23,737 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-21 11:23:23,737 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-21 11:23:23,737 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-21 11:23:23,737 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-21 11:23:23,737 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-21 11:23:23,737 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-21 11:23:23,738 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-21 11:23:23,738 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-21 11:23:23,738 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-21 11:23:23,738 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-21 11:23:23,738 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-21 11:23:23,738 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-21 11:23:23,738 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-21 11:23:23,739 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-21 11:23:23,739 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-21 11:23:23,739 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-21 11:23:23,739 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-21 11:23:23,739 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-21 11:23:23,739 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-21 11:23:23,740 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-21 11:23:23,740 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-21 11:23:23,740 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-21 11:23:23,740 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-21 11:23:23,740 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-21 11:23:23,740 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-21 11:23:23,741 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-21 11:23:23,741 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-21 11:23:23,741 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-21 11:23:23,741 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-21 11:23:23,741 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-21 11:23:23,741 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-21 11:23:23,741 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-21 11:23:23,741 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-21 11:23:23,741 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-21 11:23:23,742 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-21 11:23:23,742 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-21 11:23:23,742 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-21 11:23:23,742 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 11:23:23,742 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 11:23:23,742 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 11:23:23,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 11:23:23,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 11:23:23,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 11:23:23,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 11:23:23,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 11:23:23,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 11:23:23,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 11:23:23,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 11:23:24,392 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 11:23:24,392 INFO L295 CfgBuilder]: Removed 17 assume(true) statements. [2020-07-21 11:23:24,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:23:24 BoogieIcfgContainer [2020-07-21 11:23:24,396 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 11:23:24,397 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 11:23:24,397 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 11:23:24,404 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 11:23:24,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:23:22" (1/3) ... [2020-07-21 11:23:24,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27615701 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:23:24, skipping insertion in model container [2020-07-21 11:23:24,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:23:23" (2/3) ... [2020-07-21 11:23:24,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27615701 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:23:24, skipping insertion in model container [2020-07-21 11:23:24,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:23:24" (3/3) ... [2020-07-21 11:23:24,408 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-rb-sentinel-1.i [2020-07-21 11:23:24,420 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 11:23:24,428 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-07-21 11:23:24,444 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-07-21 11:23:24,470 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 11:23:24,471 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 11:23:24,471 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 11:23:24,471 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 11:23:24,471 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 11:23:24,472 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 11:23:24,472 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 11:23:24,472 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 11:23:24,494 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-07-21 11:23:24,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-21 11:23:24,501 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:23:24,502 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:23:24,503 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:23:24,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:23:24,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1255802584, now seen corresponding path program 1 times [2020-07-21 11:23:24,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:23:24,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1537744945] [2020-07-21 11:23:24,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:23:24,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:23:24,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 11:23:24,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:23:24,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:23:24,732 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:23:24,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1537744945] [2020-07-21 11:23:24,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:23:24,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 11:23:24,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388469035] [2020-07-21 11:23:24,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 11:23:24,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:23:24,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 11:23:24,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 11:23:24,757 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 2 states. [2020-07-21 11:23:24,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:23:24,784 INFO L93 Difference]: Finished difference Result 98 states and 156 transitions. [2020-07-21 11:23:24,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 11:23:24,786 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-21 11:23:24,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:23:24,797 INFO L225 Difference]: With dead ends: 98 [2020-07-21 11:23:24,797 INFO L226 Difference]: Without dead ends: 45 [2020-07-21 11:23:24,802 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 11:23:24,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-07-21 11:23:24,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-07-21 11:23:24,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-07-21 11:23:24,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2020-07-21 11:23:24,847 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 10 [2020-07-21 11:23:24,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:23:24,848 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2020-07-21 11:23:24,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 11:23:24,848 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2020-07-21 11:23:24,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-21 11:23:24,849 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:23:24,849 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:23:25,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:23:25,063 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:23:25,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:23:25,063 INFO L82 PathProgramCache]: Analyzing trace with hash -338068956, now seen corresponding path program 1 times [2020-07-21 11:23:25,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:23:25,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1971401082] [2020-07-21 11:23:25,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:23:25,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:23:25,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-21 11:23:25,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:23:25,265 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-07-21 11:23:25,268 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:25,275 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:25,276 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-21 11:23:25,276 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:8, output treesize:4 [2020-07-21 11:23:25,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:23:25,292 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:23:25,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1971401082] [2020-07-21 11:23:25,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:23:25,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 11:23:25,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523843789] [2020-07-21 11:23:25,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 11:23:25,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:23:25,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 11:23:25,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 11:23:25,298 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 4 states. [2020-07-21 11:23:25,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:23:25,451 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2020-07-21 11:23:25,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 11:23:25,452 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-07-21 11:23:25,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:23:25,453 INFO L225 Difference]: With dead ends: 51 [2020-07-21 11:23:25,453 INFO L226 Difference]: Without dead ends: 49 [2020-07-21 11:23:25,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:23:25,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-07-21 11:23:25,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2020-07-21 11:23:25,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-07-21 11:23:25,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2020-07-21 11:23:25,470 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 11 [2020-07-21 11:23:25,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:23:25,471 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2020-07-21 11:23:25,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 11:23:25,472 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2020-07-21 11:23:25,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-21 11:23:25,474 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:23:25,474 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:23:25,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:23:25,689 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:23:25,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:23:25,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1890143313, now seen corresponding path program 1 times [2020-07-21 11:23:25,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:23:25,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [750617203] [2020-07-21 11:23:25,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:23:25,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:23:25,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 11:23:25,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:23:25,821 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-07-21 11:23:25,822 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:25,825 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:25,825 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 11:23:25,826 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-07-21 11:23:25,843 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-07-21 11:23:25,844 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:25,847 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:25,847 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 11:23:25,848 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-07-21 11:23:25,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:23:25,854 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:23:25,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [750617203] [2020-07-21 11:23:25,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:23:25,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 11:23:25,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927860] [2020-07-21 11:23:25,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 11:23:25,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:23:25,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 11:23:25,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 11:23:25,856 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand 4 states. [2020-07-21 11:23:25,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:23:25,938 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2020-07-21 11:23:25,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 11:23:25,939 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-07-21 11:23:25,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:23:25,940 INFO L225 Difference]: With dead ends: 43 [2020-07-21 11:23:25,940 INFO L226 Difference]: Without dead ends: 41 [2020-07-21 11:23:25,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:23:25,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-07-21 11:23:25,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-07-21 11:23:25,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-21 11:23:25,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2020-07-21 11:23:25,948 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 12 [2020-07-21 11:23:25,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:23:25,948 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2020-07-21 11:23:25,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 11:23:25,949 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2020-07-21 11:23:25,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-21 11:23:25,949 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:23:25,949 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:23:26,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:23:26,164 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:23:26,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:23:26,165 INFO L82 PathProgramCache]: Analyzing trace with hash 290038970, now seen corresponding path program 1 times [2020-07-21 11:23:26,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:23:26,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [543159764] [2020-07-21 11:23:26,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:23:26,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:23:26,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 11:23:26,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:23:26,301 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-07-21 11:23:26,302 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:26,305 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:26,305 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 11:23:26,306 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-07-21 11:23:26,324 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-07-21 11:23:26,325 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:26,327 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:26,328 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 11:23:26,328 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-07-21 11:23:26,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:23:26,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:23:26,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [543159764] [2020-07-21 11:23:26,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:23:26,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 11:23:26,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582078274] [2020-07-21 11:23:26,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 11:23:26,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:23:26,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 11:23:26,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:23:26,339 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 5 states. [2020-07-21 11:23:26,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:23:26,507 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2020-07-21 11:23:26,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 11:23:26,508 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-07-21 11:23:26,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:23:26,509 INFO L225 Difference]: With dead ends: 66 [2020-07-21 11:23:26,509 INFO L226 Difference]: Without dead ends: 64 [2020-07-21 11:23:26,510 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-21 11:23:26,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-07-21 11:23:26,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 48. [2020-07-21 11:23:26,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-07-21 11:23:26,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-07-21 11:23:26,518 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 14 [2020-07-21 11:23:26,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:23:26,519 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-07-21 11:23:26,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 11:23:26,519 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-07-21 11:23:26,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-21 11:23:26,520 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:23:26,520 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:23:26,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:23:26,734 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:23:26,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:23:26,734 INFO L82 PathProgramCache]: Analyzing trace with hash 2060721718, now seen corresponding path program 1 times [2020-07-21 11:23:26,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:23:26,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1097577746] [2020-07-21 11:23:26,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:23:26,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:23:26,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 11:23:26,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:23:26,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 11:23:27,014 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 42 [2020-07-21 11:23:27,017 INFO L350 Elim1Store]: treesize reduction 106, result has 48.5 percent of original size [2020-07-21 11:23:27,018 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 74 treesize of output 107 [2020-07-21 11:23:27,019 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:27,183 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2020-07-21 11:23:27,184 INFO L624 ElimStorePlain]: treesize reduction 36, result has 80.1 percent of original size [2020-07-21 11:23:27,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 11:23:27,346 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 39 [2020-07-21 11:23:27,348 INFO L350 Elim1Store]: treesize reduction 115, result has 44.2 percent of original size [2020-07-21 11:23:27,349 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 74 treesize of output 98 [2020-07-21 11:23:27,350 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:27,508 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2020-07-21 11:23:27,509 INFO L624 ElimStorePlain]: treesize reduction 36, result has 78.6 percent of original size [2020-07-21 11:23:27,515 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 11:23:27,518 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 11:23:27,520 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2020-07-21 11:23:27,526 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 11:23:27,528 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 11:23:27,531 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 11:23:27,533 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2020-07-21 11:23:27,538 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 11:23:27,540 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 11:23:27,543 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 11:23:27,546 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 11:23:27,548 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2020-07-21 11:23:27,553 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 11:23:27,555 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 11:23:27,556 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2020-07-21 11:23:27,560 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2020-07-21 11:23:27,564 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2020-07-21 11:23:27,565 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 11:23:27,567 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 11:23:27,571 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2020-07-21 11:23:27,573 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 11:23:27,576 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 11:23:27,578 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 11:23:27,582 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 11:23:27,586 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 11:23:27,588 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-07-21 11:23:27,590 INFO L501 QuantifierPusher]: Distributing 4 conjuncts over 3 disjuncts [2020-07-21 11:23:27,593 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 11:23:27,595 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 11:23:27,597 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 11:23:27,597 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:149, output treesize:15 [2020-07-21 11:23:27,612 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-07-21 11:23:27,613 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:27,619 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:27,622 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-07-21 11:23:27,623 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:27,627 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:27,628 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 11:23:27,628 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:7 [2020-07-21 11:23:27,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:23:27,642 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:23:27,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1097577746] [2020-07-21 11:23:27,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:23:27,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 11:23:27,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122699255] [2020-07-21 11:23:27,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 11:23:27,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:23:27,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 11:23:27,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 11:23:27,644 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 4 states. [2020-07-21 11:23:27,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:23:27,768 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2020-07-21 11:23:27,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 11:23:27,769 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-07-21 11:23:27,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:23:27,770 INFO L225 Difference]: With dead ends: 48 [2020-07-21 11:23:27,770 INFO L226 Difference]: Without dead ends: 46 [2020-07-21 11:23:27,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:23:27,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-07-21 11:23:27,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-07-21 11:23:27,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-07-21 11:23:27,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-07-21 11:23:27,778 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 15 [2020-07-21 11:23:27,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:23:27,778 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-07-21 11:23:27,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 11:23:27,779 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-07-21 11:23:27,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-21 11:23:27,779 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:23:27,780 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:23:27,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:23:27,981 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:23:27,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:23:27,982 INFO L82 PathProgramCache]: Analyzing trace with hash 373775322, now seen corresponding path program 1 times [2020-07-21 11:23:27,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:23:27,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1297533747] [2020-07-21 11:23:27,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:23:28,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:23:28,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 22 conjunts are in the unsatisfiable core [2020-07-21 11:23:28,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:23:28,111 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-07-21 11:23:28,112 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2020-07-21 11:23:28,113 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:28,132 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:28,132 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-21 11:23:28,132 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:15 [2020-07-21 11:23:28,193 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:28,197 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 69 [2020-07-21 11:23:28,199 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:28,251 INFO L624 ElimStorePlain]: treesize reduction 28, result has 68.5 percent of original size [2020-07-21 11:23:28,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 11:23:28,255 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:28,268 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:28,271 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 11:23:28,271 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:59, output treesize:28 [2020-07-21 11:23:28,332 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:28,333 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 37 [2020-07-21 11:23:28,334 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:28,351 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:28,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 11:23:28,363 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:28,373 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:28,374 INFO L544 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 11:23:28,375 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 7 variables, input treesize:66, output treesize:4 [2020-07-21 11:23:28,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:23:28,383 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:23:28,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1297533747] [2020-07-21 11:23:28,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:23:28,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 11:23:28,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748361802] [2020-07-21 11:23:28,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 11:23:28,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:23:28,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 11:23:28,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:23:28,386 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 5 states. [2020-07-21 11:23:28,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:23:28,531 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2020-07-21 11:23:28,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 11:23:28,532 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-07-21 11:23:28,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:23:28,533 INFO L225 Difference]: With dead ends: 46 [2020-07-21 11:23:28,534 INFO L226 Difference]: Without dead ends: 44 [2020-07-21 11:23:28,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:23:28,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-07-21 11:23:28,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-07-21 11:23:28,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-21 11:23:28,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2020-07-21 11:23:28,541 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 17 [2020-07-21 11:23:28,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:23:28,541 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2020-07-21 11:23:28,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 11:23:28,542 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2020-07-21 11:23:28,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-21 11:23:28,542 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:23:28,543 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:23:28,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:23:28,746 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:23:28,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:23:28,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1568846049, now seen corresponding path program 1 times [2020-07-21 11:23:28,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:23:28,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [418794971] [2020-07-21 11:23:28,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:23:28,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:23:28,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 11:23:28,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:23:28,878 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-07-21 11:23:28,879 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:28,881 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:28,881 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 11:23:28,882 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-07-21 11:23:28,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:23:28,893 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:23:28,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [418794971] [2020-07-21 11:23:28,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:23:28,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 11:23:28,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255042620] [2020-07-21 11:23:28,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 11:23:28,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:23:28,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 11:23:28,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:23:28,895 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 5 states. [2020-07-21 11:23:29,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:23:29,026 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2020-07-21 11:23:29,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 11:23:29,027 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-07-21 11:23:29,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:23:29,027 INFO L225 Difference]: With dead ends: 59 [2020-07-21 11:23:29,028 INFO L226 Difference]: Without dead ends: 47 [2020-07-21 11:23:29,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-21 11:23:29,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-07-21 11:23:29,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2020-07-21 11:23:29,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-07-21 11:23:29,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-07-21 11:23:29,034 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 18 [2020-07-21 11:23:29,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:23:29,034 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-07-21 11:23:29,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 11:23:29,035 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-07-21 11:23:29,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-21 11:23:29,035 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:23:29,036 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:23:29,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:23:29,248 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:23:29,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:23:29,249 INFO L82 PathProgramCache]: Analyzing trace with hash 777661568, now seen corresponding path program 1 times [2020-07-21 11:23:29,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:23:29,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1492552518] [2020-07-21 11:23:29,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:23:29,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:23:29,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 11:23:29,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:23:29,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 11:23:29,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 11:23:29,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 11:23:29,347 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2020-07-21 11:23:29,347 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:29,366 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:29,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 11:23:29,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 11:23:29,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 11:23:29,374 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2020-07-21 11:23:29,374 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:29,386 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:29,386 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 11:23:29,387 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:55, output treesize:33 [2020-07-21 11:23:29,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 11:23:29,420 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 10 [2020-07-21 11:23:29,421 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:29,429 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:29,434 INFO L350 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2020-07-21 11:23:29,434 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 10 [2020-07-21 11:23:29,435 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:29,439 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:29,439 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 11:23:29,440 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:47, output treesize:7 [2020-07-21 11:23:29,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:23:29,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 11:23:29,491 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:23:29,523 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:23:29,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1492552518] [2020-07-21 11:23:29,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 11:23:29,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 11:23:29,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88483706] [2020-07-21 11:23:29,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 11:23:29,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:23:29,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 11:23:29,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-21 11:23:29,526 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 7 states. [2020-07-21 11:23:29,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:23:29,825 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2020-07-21 11:23:29,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 11:23:29,825 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-07-21 11:23:29,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:23:29,826 INFO L225 Difference]: With dead ends: 63 [2020-07-21 11:23:29,826 INFO L226 Difference]: Without dead ends: 41 [2020-07-21 11:23:29,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-07-21 11:23:29,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-07-21 11:23:29,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-07-21 11:23:29,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-21 11:23:29,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2020-07-21 11:23:29,832 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 21 [2020-07-21 11:23:29,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:23:29,832 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2020-07-21 11:23:29,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 11:23:29,833 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2020-07-21 11:23:29,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-21 11:23:29,833 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:23:29,834 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:23:30,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:23:30,046 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:23:30,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:23:30,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1056872398, now seen corresponding path program 1 times [2020-07-21 11:23:30,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:23:30,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254310084] [2020-07-21 11:23:30,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:23:30,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:23:30,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 44 conjunts are in the unsatisfiable core [2020-07-21 11:23:30,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:23:30,163 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-07-21 11:23:30,164 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2020-07-21 11:23:30,165 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:30,180 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:30,185 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-07-21 11:23:30,186 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:30,197 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:30,198 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 11:23:30,198 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:32, output treesize:29 [2020-07-21 11:23:30,262 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:30,262 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-07-21 11:23:30,263 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:30,342 INFO L624 ElimStorePlain]: treesize reduction 14, result has 88.9 percent of original size [2020-07-21 11:23:30,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 11:23:30,347 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:30,375 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:30,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 11:23:30,390 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-21 11:23:30,390 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:30,415 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:30,421 INFO L544 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 11:23:30,439 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:30,456 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:30,457 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 48 [2020-07-21 11:23:30,458 INFO L544 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:30,500 INFO L624 ElimStorePlain]: treesize reduction 20, result has 70.6 percent of original size [2020-07-21 11:23:30,502 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, 4 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 11:23:30,503 INFO L244 ElimStorePlain]: Needed 6 recursive calls to eliminate 8 variables, input treesize:114, output treesize:27 [2020-07-21 11:23:30,592 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:30,593 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2020-07-21 11:23:30,594 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:30,681 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:30,683 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_$Pointer$.base_34|, |v_#memory_int_44|, |v_#memory_$Pointer$.offset_32|, |v_#memory_int_42|, |v_#memory_int_43|], 4=[|v_#memory_int_46|]} [2020-07-21 11:23:30,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 11:23:30,688 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:30,741 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:30,745 INFO L544 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 11:23:30,806 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:30,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 11:23:30,810 INFO L544 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:30,841 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:30,844 INFO L544 ElimStorePlain]: Start of recursive call 6: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 11:23:30,866 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:30,869 INFO L544 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 11:23:30,885 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:30,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 11:23:30,912 INFO L350 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2020-07-21 11:23:30,913 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 50 [2020-07-21 11:23:30,913 INFO L544 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:30,933 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:30,936 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, 6 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-07-21 11:23:30,937 INFO L244 ElimStorePlain]: Needed 8 recursive calls to eliminate 10 variables, input treesize:319, output treesize:41 [2020-07-21 11:23:31,046 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2020-07-21 11:23:31,047 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:31,054 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:31,055 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 11:23:31,056 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:43, output treesize:3 [2020-07-21 11:23:31,076 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:23:31,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 11:23:31,121 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_$Pointer$.base_34|, |v_#memory_int_44|, |v_#memory_$Pointer$.offset_32|, |v_#memory_int_43|], 3=[|v_#memory_int_42|]} [2020-07-21 11:23:31,127 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:31,300 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 57 [2020-07-21 11:23:31,301 INFO L624 ElimStorePlain]: treesize reduction 154, result has 51.4 percent of original size [2020-07-21 11:23:31,306 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 11:23:31,355 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:31,361 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:31,507 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-07-21 11:23:31,508 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:31,519 INFO L544 ElimStorePlain]: Start of recursive call 5: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2020-07-21 11:23:31,650 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-07-21 11:23:31,651 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:31,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1254310084] [2020-07-21 11:23:31,654 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Some non-self update cases but no top-level DER relation [2020-07-21 11:23:31,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:23:31,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-07-21 11:23:31,656 ERROR L206 FreeRefinementEngine]: Strategy FIXED_PREFERENCES failed to provide any proof altough trace is infeasible [2020-07-21 11:23:31,656 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 11:23:31,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:23:31,881 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-07-21 11:23:31,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 11:23:31 BoogieIcfgContainer [2020-07-21 11:23:31,882 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 11:23:31,884 INFO L168 Benchmark]: Toolchain (without parser) took 9043.50 ms. Allocated memory was 134.2 MB in the beginning and 306.2 MB in the end (delta: 172.0 MB). Free memory was 96.7 MB in the beginning and 78.7 MB in the end (delta: 18.0 MB). Peak memory consumption was 190.0 MB. Max. memory is 7.1 GB. [2020-07-21 11:23:31,884 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 134.2 MB. Free memory was 116.1 MB in the beginning and 115.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-21 11:23:31,885 INFO L168 Benchmark]: CACSL2BoogieTranslator took 726.91 ms. Allocated memory was 134.2 MB in the beginning and 198.7 MB in the end (delta: 64.5 MB). Free memory was 96.5 MB in the beginning and 165.3 MB in the end (delta: -68.8 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2020-07-21 11:23:31,885 INFO L168 Benchmark]: Boogie Preprocessor took 81.90 ms. Allocated memory is still 198.7 MB. Free memory was 165.3 MB in the beginning and 162.4 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-07-21 11:23:31,886 INFO L168 Benchmark]: RCFGBuilder took 743.32 ms. Allocated memory is still 198.7 MB. Free memory was 162.4 MB in the beginning and 110.5 MB in the end (delta: 51.9 MB). Peak memory consumption was 51.9 MB. Max. memory is 7.1 GB. [2020-07-21 11:23:31,887 INFO L168 Benchmark]: TraceAbstraction took 7484.88 ms. Allocated memory was 198.7 MB in the beginning and 306.2 MB in the end (delta: 107.5 MB). Free memory was 109.8 MB in the beginning and 78.7 MB in the end (delta: 31.1 MB). Peak memory consumption was 138.6 MB. Max. memory is 7.1 GB. [2020-07-21 11:23:31,889 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 134.2 MB. Free memory was 116.1 MB in the beginning and 115.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 726.91 ms. Allocated memory was 134.2 MB in the beginning and 198.7 MB in the end (delta: 64.5 MB). Free memory was 96.5 MB in the beginning and 165.3 MB in the end (delta: -68.8 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 81.90 ms. Allocated memory is still 198.7 MB. Free memory was 165.3 MB in the beginning and 162.4 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 743.32 ms. Allocated memory is still 198.7 MB. Free memory was 162.4 MB in the beginning and 110.5 MB in the end (delta: 51.9 MB). Peak memory consumption was 51.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7484.88 ms. Allocated memory was 198.7 MB in the beginning and 306.2 MB in the end (delta: 107.5 MB). Free memory was 109.8 MB in the beginning and 78.7 MB in the end (delta: 31.1 MB). Peak memory consumption was 138.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 1031]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L987] struct TSLL* null = malloc(sizeof(struct TSLL)); [L988] null->next = ((void*)0) [L989] null->prev = ((void*)0) [L990] null->colour = BLACK [L992] struct TSLL* list = malloc(sizeof(struct TSLL)); [L993] list->next = null [L994] list->prev = null [L995] list->colour = BLACK [L997] struct TSLL* end = list; [L1000] COND TRUE __VERIFIER_nondet_int() [L1003] end->next = malloc(sizeof(struct TSLL)) [L1004] EXPR end->next [L1004] end->next->prev = end [L1005] EXPR end->next [L1005] end = end->next [L1006] end->next = null [L1008] COND FALSE !(__VERIFIER_nondet_int()) [L1014] end->colour = RED [L1015] end->next = malloc(sizeof(struct TSLL)) [L1016] EXPR end->next [L1016] end->next->prev = end [L1017] EXPR end->next [L1017] end = end->next [L1018] end->next = null [L1019] end->colour = BLACK [L1021] EXPR end->colour [L1021] COND FALSE !(!(BLACK == end->colour)) [L1022] EXPR end->next [L1022] COND FALSE !(!(null == end->next)) [L1023] COND FALSE !(!(null != end)) [L1000] COND FALSE !(__VERIFIER_nondet_int()) [L1026] end = null [L1027] end = list [L1030] COND FALSE !(!(null != end)) [L1031] EXPR end->colour [L1031] COND TRUE !(BLACK == end->colour) [L1031] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 52 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 7.3s, OverallIterations: 9, TraceHistogramMax: 2, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 287 SDtfs, 175 SDslu, 378 SDs, 0 SdLazy, 261 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 139 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 23 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 118 NumberOfCodeBlocks, 118 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 130 ConstructedInterpolants, 1 QuantifiedInterpolants, 15810 SizeOfPredicates, 37 NumberOfNonLiveVariables, 805 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 9 InterpolantComputations, 7 PerfectInterpolantSequences, 2/4 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...