/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 SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-01-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 13:42:08,197 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 13:42:08,203 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 13:42:08,221 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 13:42:08,222 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 13:42:08,224 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 13:42:08,226 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 13:42:08,237 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 13:42:08,242 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 13:42:08,242 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 13:42:08,244 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 13:42:08,246 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 13:42:08,246 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 13:42:08,249 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 13:42:08,251 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 13:42:08,253 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 13:42:08,254 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 13:42:08,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 13:42:08,258 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 13:42:08,264 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 13:42:08,269 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 13:42:08,273 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 13:42:08,274 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 13:42:08,275 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 13:42:08,277 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 13:42:08,278 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 13:42:08,278 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 13:42:08,281 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 13:42:08,282 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 13:42:08,282 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 13:42:08,283 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 13:42:08,285 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 13:42:08,286 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 13:42:08,287 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 13:42:08,288 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 13:42:08,288 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 13:42:08,289 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 13:42:08,289 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 13:42:08,289 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 13:42:08,290 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 13:42:08,292 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 13:42:08,292 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 13:42:08,331 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 13:42:08,331 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 13:42:08,332 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 13:42:08,333 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 13:42:08,333 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 13:42:08,333 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 13:42:08,333 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 13:42:08,333 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 13:42:08,334 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 13:42:08,334 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 13:42:08,334 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 13:42:08,338 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 13:42:08,338 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 13:42:08,338 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 13:42:08,338 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 13:42:08,338 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 13:42:08,339 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 13:42:08,339 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 13:42:08,339 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 13:42:08,340 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 13:42:08,340 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 13:42:08,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 13:42:08,340 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 13:42:08,340 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 13:42:08,341 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 13:42:08,341 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 13:42:08,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:42:08,341 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 13:42:08,341 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 13:42:08,341 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 -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 13:42:08,654 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 13:42:08,669 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 13:42:08,673 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 13:42:08,674 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 13:42:08,675 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 13:42:08,675 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-01-1.i [2020-07-21 13:42:08,765 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d5b0be08/bfb4e485d66648ffaf3ac53708257c31/FLAGb5f744ac5 [2020-07-21 13:42:09,363 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 13:42:09,364 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-01-1.i [2020-07-21 13:42:09,378 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d5b0be08/bfb4e485d66648ffaf3ac53708257c31/FLAGb5f744ac5 [2020-07-21 13:42:09,662 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d5b0be08/bfb4e485d66648ffaf3ac53708257c31 [2020-07-21 13:42:09,671 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 13:42:09,674 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 13:42:09,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 13:42:09,675 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 13:42:09,679 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 13:42:09,681 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:42:09" (1/1) ... [2020-07-21 13:42:09,684 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f65fbdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:42:09, skipping insertion in model container [2020-07-21 13:42:09,684 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:42:09" (1/1) ... [2020-07-21 13:42:09,694 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 13:42:09,768 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 13:42:10,282 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 13:42:10,291 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 13:42:10,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 13:42:10,408 INFO L208 MainTranslator]: Completed translation [2020-07-21 13:42:10,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:42:10 WrapperNode [2020-07-21 13:42:10,409 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 13:42:10,410 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 13:42:10,410 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 13:42:10,410 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 13:42:10,426 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:42:10" (1/1) ... [2020-07-21 13:42:10,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:42:10" (1/1) ... [2020-07-21 13:42:10,457 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:42:10" (1/1) ... [2020-07-21 13:42:10,458 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:42:10" (1/1) ... [2020-07-21 13:42:10,480 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:42:10" (1/1) ... [2020-07-21 13:42:10,492 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:42:10" (1/1) ... [2020-07-21 13:42:10,496 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:42:10" (1/1) ... [2020-07-21 13:42:10,504 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 13:42:10,505 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 13:42:10,506 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 13:42:10,506 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 13:42:10,507 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:42:10" (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 13:42:10,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 13:42:10,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 13:42:10,571 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 13:42:10,571 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-21 13:42:10,571 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-21 13:42:10,572 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-21 13:42:10,572 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-21 13:42:10,572 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-21 13:42:10,573 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-21 13:42:10,573 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-21 13:42:10,573 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-21 13:42:10,573 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-21 13:42:10,573 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-21 13:42:10,574 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-21 13:42:10,574 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-21 13:42:10,574 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-21 13:42:10,575 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-21 13:42:10,576 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-21 13:42:10,576 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-21 13:42:10,576 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-21 13:42:10,576 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-21 13:42:10,577 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-21 13:42:10,577 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-21 13:42:10,577 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-21 13:42:10,578 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-21 13:42:10,579 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-21 13:42:10,579 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-21 13:42:10,579 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-21 13:42:10,580 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-21 13:42:10,580 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-21 13:42:10,580 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-21 13:42:10,580 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-21 13:42:10,580 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-21 13:42:10,580 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-21 13:42:10,581 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-21 13:42:10,581 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-21 13:42:10,581 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-21 13:42:10,581 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-21 13:42:10,581 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-21 13:42:10,581 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-21 13:42:10,581 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-21 13:42:10,582 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-21 13:42:10,582 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-21 13:42:10,582 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-21 13:42:10,582 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-21 13:42:10,582 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-21 13:42:10,582 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-21 13:42:10,583 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-21 13:42:10,583 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-21 13:42:10,583 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-21 13:42:10,583 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-21 13:42:10,583 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-21 13:42:10,583 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-21 13:42:10,583 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 13:42:10,585 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-21 13:42:10,585 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-21 13:42:10,585 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 13:42:10,585 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-21 13:42:10,586 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-21 13:42:10,586 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-21 13:42:10,586 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-21 13:42:10,586 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-21 13:42:10,587 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 13:42:10,587 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-21 13:42:10,587 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-21 13:42:10,587 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-21 13:42:10,587 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 13:42:10,588 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-21 13:42:10,588 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-21 13:42:10,589 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-21 13:42:10,589 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-21 13:42:10,589 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-21 13:42:10,590 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-21 13:42:10,590 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-21 13:42:10,591 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-21 13:42:10,592 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-21 13:42:10,592 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-21 13:42:10,592 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-21 13:42:10,593 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-21 13:42:10,594 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-21 13:42:10,594 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-21 13:42:10,594 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-21 13:42:10,594 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-21 13:42:10,594 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-21 13:42:10,594 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-21 13:42:10,595 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-21 13:42:10,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-21 13:42:10,596 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-21 13:42:10,596 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-21 13:42:10,596 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-21 13:42:10,596 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-21 13:42:10,596 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-21 13:42:10,596 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-21 13:42:10,597 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-21 13:42:10,597 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-21 13:42:10,597 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-21 13:42:10,597 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-21 13:42:10,597 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-21 13:42:10,597 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-21 13:42:10,597 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-21 13:42:10,598 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-21 13:42:10,598 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-21 13:42:10,598 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-21 13:42:10,598 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-21 13:42:10,598 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-21 13:42:10,598 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-21 13:42:10,598 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 13:42:10,598 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 13:42:10,599 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 13:42:10,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 13:42:10,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 13:42:10,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 13:42:10,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 13:42:10,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 13:42:10,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 13:42:11,397 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 13:42:11,397 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-07-21 13:42:11,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:42:11 BoogieIcfgContainer [2020-07-21 13:42:11,403 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 13:42:11,404 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 13:42:11,404 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 13:42:11,408 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 13:42:11,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:42:09" (1/3) ... [2020-07-21 13:42:11,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58cd611f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:42:11, skipping insertion in model container [2020-07-21 13:42:11,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:42:10" (2/3) ... [2020-07-21 13:42:11,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58cd611f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:42:11, skipping insertion in model container [2020-07-21 13:42:11,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:42:11" (3/3) ... [2020-07-21 13:42:11,412 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-01-1.i [2020-07-21 13:42:11,426 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 13:42:11,435 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-07-21 13:42:11,451 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-07-21 13:42:11,480 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 13:42:11,481 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 13:42:11,481 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 13:42:11,481 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 13:42:11,481 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 13:42:11,482 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 13:42:11,482 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 13:42:11,482 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 13:42:11,506 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2020-07-21 13:42:11,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-07-21 13:42:11,513 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:42:11,514 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:42:11,515 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:42:11,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:42:11,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1861454184, now seen corresponding path program 1 times [2020-07-21 13:42:11,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:42:11,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1744882793] [2020-07-21 13:42:11,530 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) 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 13:42:11,729 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 13:42:11,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:42:11,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 13:42:11,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:42:11,784 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 13:42:11,784 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:42:11,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1744882793] [2020-07-21 13:42:11,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:42:11,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 13:42:11,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17740583] [2020-07-21 13:42:11,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 13:42:11,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:42:11,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 13:42:11,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:42:11,816 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 3 states. [2020-07-21 13:42:11,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:42:11,916 INFO L93 Difference]: Finished difference Result 186 states and 302 transitions. [2020-07-21 13:42:11,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 13:42:11,919 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-07-21 13:42:11,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:42:11,932 INFO L225 Difference]: With dead ends: 186 [2020-07-21 13:42:11,932 INFO L226 Difference]: Without dead ends: 99 [2020-07-21 13:42:11,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:42:11,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-07-21 13:42:11,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 81. [2020-07-21 13:42:11,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-07-21 13:42:11,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2020-07-21 13:42:11,990 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 8 [2020-07-21 13:42:11,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:42:11,991 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2020-07-21 13:42:11,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 13:42:11,991 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2020-07-21 13:42:11,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-21 13:42:11,992 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:42:11,992 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:42:12,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:42:12,208 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:42:12,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:42:12,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1461031906, now seen corresponding path program 1 times [2020-07-21 13:42:12,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:42:12,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [322357009] [2020-07-21 13:42:12,211 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) 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 13:42:12,362 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:42:12,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:42:12,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 13:42:12,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:42:12,380 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 13:42:12,381 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:42:12,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [322357009] [2020-07-21 13:42:12,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:42:12,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 13:42:12,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429845003] [2020-07-21 13:42:12,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 13:42:12,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:42:12,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 13:42:12,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:42:12,389 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand 3 states. [2020-07-21 13:42:12,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:42:12,421 INFO L93 Difference]: Finished difference Result 84 states and 93 transitions. [2020-07-21 13:42:12,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 13:42:12,422 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-07-21 13:42:12,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:42:12,427 INFO L225 Difference]: With dead ends: 84 [2020-07-21 13:42:12,428 INFO L226 Difference]: Without dead ends: 82 [2020-07-21 13:42:12,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:42:12,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-07-21 13:42:12,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-07-21 13:42:12,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-07-21 13:42:12,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2020-07-21 13:42:12,464 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 14 [2020-07-21 13:42:12,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:42:12,465 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2020-07-21 13:42:12,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 13:42:12,465 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2020-07-21 13:42:12,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-21 13:42:12,466 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:42:12,466 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:42:12,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:42:12,681 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:42:12,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:42:12,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1461033828, now seen corresponding path program 1 times [2020-07-21 13:42:12,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:42:12,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1185866402] [2020-07-21 13:42:12,684 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) 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 13:42:12,813 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:42:12,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:42:12,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 13:42:12,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:42:12,934 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 13:42:12,934 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:12,945 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:12,953 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 13:42:12,954 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:12,963 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:12,963 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 13:42:12,964 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:19 [2020-07-21 13:42:13,004 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 13:42:13,006 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 13:42:13,022 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 13:42:13,022 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:42:13,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1185866402] [2020-07-21 13:42:13,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:42:13,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 13:42:13,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148433839] [2020-07-21 13:42:13,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 13:42:13,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:42:13,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 13:42:13,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 13:42:13,029 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand 4 states. [2020-07-21 13:42:13,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:42:13,178 INFO L93 Difference]: Finished difference Result 138 states and 153 transitions. [2020-07-21 13:42:13,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 13:42:13,179 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-07-21 13:42:13,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:42:13,181 INFO L225 Difference]: With dead ends: 138 [2020-07-21 13:42:13,181 INFO L226 Difference]: Without dead ends: 136 [2020-07-21 13:42:13,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 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 13:42:13,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-07-21 13:42:13,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 84. [2020-07-21 13:42:13,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-07-21 13:42:13,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 94 transitions. [2020-07-21 13:42:13,195 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 94 transitions. Word has length 14 [2020-07-21 13:42:13,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:42:13,196 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 94 transitions. [2020-07-21 13:42:13,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 13:42:13,196 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 94 transitions. [2020-07-21 13:42:13,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-21 13:42:13,197 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:42:13,197 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:42:13,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:42:13,412 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:42:13,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:42:13,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1462880870, now seen corresponding path program 1 times [2020-07-21 13:42:13,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:42:13,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [619233098] [2020-07-21 13:42:13,414 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) 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 13:42:13,559 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 13:42:13,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:42:13,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 13:42:13,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:42:13,578 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-07-21 13:42:13,578 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:13,580 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:13,580 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-21 13:42:13,581 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-07-21 13:42:13,624 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:13,625 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-07-21 13:42:13,626 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:13,649 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:13,652 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_$Pointer$.offset_36|], 8=[|v_#memory_$Pointer$.base_36|]} [2020-07-21 13:42:13,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 13:42:13,661 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:13,677 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:13,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 13:42:13,684 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 34 treesize of output 24 [2020-07-21 13:42:13,685 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:13,696 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:13,697 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 13:42:13,698 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:186, output treesize:47 [2020-07-21 13:42:13,716 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 13:42:13,725 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 13:42:13,726 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:42:13,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [619233098] [2020-07-21 13:42:13,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:42:13,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 13:42:13,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229402257] [2020-07-21 13:42:13,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 13:42:13,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:42:13,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 13:42:13,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 13:42:13,728 INFO L87 Difference]: Start difference. First operand 84 states and 94 transitions. Second operand 5 states. [2020-07-21 13:42:13,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:42:13,965 INFO L93 Difference]: Finished difference Result 221 states and 244 transitions. [2020-07-21 13:42:13,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 13:42:13,965 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-07-21 13:42:13,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:42:13,969 INFO L225 Difference]: With dead ends: 221 [2020-07-21 13:42:13,970 INFO L226 Difference]: Without dead ends: 152 [2020-07-21 13:42:13,973 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-21 13:42:13,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-07-21 13:42:13,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 81. [2020-07-21 13:42:13,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-07-21 13:42:13,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2020-07-21 13:42:13,995 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 14 [2020-07-21 13:42:13,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:42:13,995 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2020-07-21 13:42:13,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 13:42:13,996 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2020-07-21 13:42:13,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-21 13:42:13,996 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:42:13,996 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:42:14,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:42:14,211 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:42:14,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:42:14,212 INFO L82 PathProgramCache]: Analyzing trace with hash 177734485, now seen corresponding path program 1 times [2020-07-21 13:42:14,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:42:14,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690391010] [2020-07-21 13:42:14,213 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) 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 13:42:14,310 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 13:42:14,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:42:14,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-21 13:42:14,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:42:14,328 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-07-21 13:42:14,328 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:14,334 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:14,335 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-21 13:42:14,335 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-07-21 13:42:14,369 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:14,370 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-07-21 13:42:14,370 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:14,378 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:14,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 13:42:14,383 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:14,389 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:14,390 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 13:42:14,391 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:46, output treesize:4 [2020-07-21 13:42:14,398 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 13:42:14,398 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:42:14,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [690391010] [2020-07-21 13:42:14,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:42:14,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 13:42:14,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662455505] [2020-07-21 13:42:14,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 13:42:14,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:42:14,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 13:42:14,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 13:42:14,400 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand 5 states. [2020-07-21 13:42:14,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:42:14,545 INFO L93 Difference]: Finished difference Result 126 states and 140 transitions. [2020-07-21 13:42:14,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 13:42:14,545 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-07-21 13:42:14,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:42:14,547 INFO L225 Difference]: With dead ends: 126 [2020-07-21 13:42:14,548 INFO L226 Difference]: Without dead ends: 122 [2020-07-21 13:42:14,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 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 13:42:14,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-07-21 13:42:14,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 77. [2020-07-21 13:42:14,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-07-21 13:42:14,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 86 transitions. [2020-07-21 13:42:14,557 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 86 transitions. Word has length 19 [2020-07-21 13:42:14,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:42:14,557 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 86 transitions. [2020-07-21 13:42:14,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 13:42:14,557 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 86 transitions. [2020-07-21 13:42:14,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-21 13:42:14,558 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:42:14,558 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:42:14,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:42:14,767 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:42:14,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:42:14,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1214805939, now seen corresponding path program 1 times [2020-07-21 13:42:14,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:42:14,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [672193376] [2020-07-21 13:42:14,770 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) 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 13:42:14,871 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 13:42:14,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:42:14,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-21 13:42:14,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:42:14,897 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 13:42:14,897 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:42:14,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [672193376] [2020-07-21 13:42:14,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:42:14,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 13:42:14,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076982056] [2020-07-21 13:42:14,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 13:42:14,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:42:14,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 13:42:14,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 13:42:14,900 INFO L87 Difference]: Start difference. First operand 77 states and 86 transitions. Second operand 5 states. [2020-07-21 13:42:14,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:42:14,994 INFO L93 Difference]: Finished difference Result 136 states and 150 transitions. [2020-07-21 13:42:14,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 13:42:14,994 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-07-21 13:42:14,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:42:14,996 INFO L225 Difference]: With dead ends: 136 [2020-07-21 13:42:14,996 INFO L226 Difference]: Without dead ends: 116 [2020-07-21 13:42:14,997 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 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 13:42:14,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-07-21 13:42:15,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 76. [2020-07-21 13:42:15,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-07-21 13:42:15,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 85 transitions. [2020-07-21 13:42:15,019 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 85 transitions. Word has length 20 [2020-07-21 13:42:15,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:42:15,020 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 85 transitions. [2020-07-21 13:42:15,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 13:42:15,024 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 85 transitions. [2020-07-21 13:42:15,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-21 13:42:15,025 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:42:15,025 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:42:15,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:42:15,243 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:42:15,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:42:15,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1924122782, now seen corresponding path program 1 times [2020-07-21 13:42:15,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:42:15,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [393008271] [2020-07-21 13:42:15,245 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) 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 13:42:15,331 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:42:15,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:42:15,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 13:42:15,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:42:15,350 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 13:42:15,350 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:42:15,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [393008271] [2020-07-21 13:42:15,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:42:15,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 13:42:15,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861407491] [2020-07-21 13:42:15,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 13:42:15,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:42:15,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 13:42:15,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:42:15,354 INFO L87 Difference]: Start difference. First operand 76 states and 85 transitions. Second operand 3 states. [2020-07-21 13:42:15,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:42:15,369 INFO L93 Difference]: Finished difference Result 102 states and 115 transitions. [2020-07-21 13:42:15,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 13:42:15,369 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-07-21 13:42:15,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:42:15,371 INFO L225 Difference]: With dead ends: 102 [2020-07-21 13:42:15,371 INFO L226 Difference]: Without dead ends: 100 [2020-07-21 13:42:15,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:42:15,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-07-21 13:42:15,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 78. [2020-07-21 13:42:15,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-07-21 13:42:15,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 88 transitions. [2020-07-21 13:42:15,379 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 88 transitions. Word has length 24 [2020-07-21 13:42:15,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:42:15,379 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 88 transitions. [2020-07-21 13:42:15,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 13:42:15,379 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 88 transitions. [2020-07-21 13:42:15,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-21 13:42:15,380 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:42:15,380 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:42:15,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:42:15,582 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:42:15,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:42:15,583 INFO L82 PathProgramCache]: Analyzing trace with hash -481740404, now seen corresponding path program 1 times [2020-07-21 13:42:15,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:42:15,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058897588] [2020-07-21 13:42:15,584 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) 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 13:42:15,665 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 13:42:15,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:42:15,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-21 13:42:15,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:42:15,683 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 13:42:15,684 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:15,691 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:15,694 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 13:42:15,695 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:15,702 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:15,703 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 13:42:15,703 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:30, output treesize:22 [2020-07-21 13:42:15,747 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 13:42:15,747 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:15,754 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:15,757 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 13:42:15,757 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:15,762 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:15,762 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 13:42:15,762 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:7 [2020-07-21 13:42:15,773 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 13:42:15,774 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:42:15,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2058897588] [2020-07-21 13:42:15,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:42:15,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 13:42:15,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958481516] [2020-07-21 13:42:15,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 13:42:15,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:42:15,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 13:42:15,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-21 13:42:15,776 INFO L87 Difference]: Start difference. First operand 78 states and 88 transitions. Second operand 6 states. [2020-07-21 13:42:16,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:42:16,053 INFO L93 Difference]: Finished difference Result 210 states and 236 transitions. [2020-07-21 13:42:16,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 13:42:16,053 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-07-21 13:42:16,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:42:16,055 INFO L225 Difference]: With dead ends: 210 [2020-07-21 13:42:16,055 INFO L226 Difference]: Without dead ends: 167 [2020-07-21 13:42:16,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-07-21 13:42:16,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-07-21 13:42:16,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 100. [2020-07-21 13:42:16,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-07-21 13:42:16,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 115 transitions. [2020-07-21 13:42:16,065 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 115 transitions. Word has length 25 [2020-07-21 13:42:16,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:42:16,066 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 115 transitions. [2020-07-21 13:42:16,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 13:42:16,066 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 115 transitions. [2020-07-21 13:42:16,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-21 13:42:16,067 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:42:16,067 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:42:16,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:42:16,281 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:42:16,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:42:16,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1502808758, now seen corresponding path program 1 times [2020-07-21 13:42:16,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:42:16,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [946401141] [2020-07-21 13:42:16,283 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) 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 13:42:16,414 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:42:16,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:42:16,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 13:42:16,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:42:16,439 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 13:42:16,439 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:42:16,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [946401141] [2020-07-21 13:42:16,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:42:16,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 13:42:16,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740339502] [2020-07-21 13:42:16,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 13:42:16,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:42:16,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 13:42:16,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:42:16,442 INFO L87 Difference]: Start difference. First operand 100 states and 115 transitions. Second operand 3 states. [2020-07-21 13:42:16,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:42:16,457 INFO L93 Difference]: Finished difference Result 100 states and 115 transitions. [2020-07-21 13:42:16,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 13:42:16,458 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-07-21 13:42:16,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:42:16,459 INFO L225 Difference]: With dead ends: 100 [2020-07-21 13:42:16,459 INFO L226 Difference]: Without dead ends: 98 [2020-07-21 13:42:16,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:42:16,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-07-21 13:42:16,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-07-21 13:42:16,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-07-21 13:42:16,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 113 transitions. [2020-07-21 13:42:16,469 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 113 transitions. Word has length 25 [2020-07-21 13:42:16,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:42:16,469 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 113 transitions. [2020-07-21 13:42:16,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 13:42:16,470 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 113 transitions. [2020-07-21 13:42:16,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-21 13:42:16,471 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:42:16,471 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:42:16,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:42:16,686 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:42:16,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:42:16,687 INFO L82 PathProgramCache]: Analyzing trace with hash -611625627, now seen corresponding path program 1 times [2020-07-21 13:42:16,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:42:16,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338899679] [2020-07-21 13:42:16,688 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:42:16,818 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:42:16,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:42:16,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 13:42:16,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:42:16,838 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 13:42:16,839 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:16,845 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:16,857 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 13:42:16,858 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:16,870 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:16,870 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 13:42:16,870 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:19 [2020-07-21 13:42:16,884 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 13:42:16,886 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 13:42:16,897 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 13:42:16,898 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:42:16,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1338899679] [2020-07-21 13:42:16,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:42:16,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 13:42:16,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235960221] [2020-07-21 13:42:16,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 13:42:16,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:42:16,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 13:42:16,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 13:42:16,901 INFO L87 Difference]: Start difference. First operand 98 states and 113 transitions. Second operand 4 states. [2020-07-21 13:42:17,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:42:17,001 INFO L93 Difference]: Finished difference Result 109 states and 127 transitions. [2020-07-21 13:42:17,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 13:42:17,002 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-07-21 13:42:17,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:42:17,004 INFO L225 Difference]: With dead ends: 109 [2020-07-21 13:42:17,004 INFO L226 Difference]: Without dead ends: 107 [2020-07-21 13:42:17,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 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 13:42:17,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-07-21 13:42:17,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 101. [2020-07-21 13:42:17,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-07-21 13:42:17,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 116 transitions. [2020-07-21 13:42:17,023 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 116 transitions. Word has length 27 [2020-07-21 13:42:17,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:42:17,024 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 116 transitions. [2020-07-21 13:42:17,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 13:42:17,024 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 116 transitions. [2020-07-21 13:42:17,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-21 13:42:17,028 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:42:17,028 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:42:17,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:42:17,245 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:42:17,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:42:17,246 INFO L82 PathProgramCache]: Analyzing trace with hash -609778585, now seen corresponding path program 1 times [2020-07-21 13:42:17,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:42:17,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936773340] [2020-07-21 13:42:17,247 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:42:17,342 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 13:42:17,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:42:17,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 13:42:17,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:42:17,365 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-07-21 13:42:17,366 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:17,373 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:17,377 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2020-07-21 13:42:17,394 INFO L624 ElimStorePlain]: treesize reduction 21, result has 30.0 percent of original size [2020-07-21 13:42:17,395 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 13:42:17,395 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:38, output treesize:5 [2020-07-21 13:42:17,419 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:17,420 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-07-21 13:42:17,421 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:17,438 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:17,440 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_$Pointer$.offset_40|], 8=[|v_#memory_$Pointer$.base_41|]} [2020-07-21 13:42:17,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 13:42:17,443 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:17,455 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:17,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 13:42:17,470 INFO L350 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2020-07-21 13:42:17,471 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 26 [2020-07-21 13:42:17,472 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:17,481 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:17,483 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 13:42:17,483 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:186, output treesize:49 [2020-07-21 13:42:17,503 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 13:42:17,514 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 13:42:17,514 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:42:17,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936773340] [2020-07-21 13:42:17,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:42:17,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 13:42:17,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688753127] [2020-07-21 13:42:17,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 13:42:17,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:42:17,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 13:42:17,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 13:42:17,517 INFO L87 Difference]: Start difference. First operand 101 states and 116 transitions. Second operand 5 states. [2020-07-21 13:42:17,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:42:17,776 INFO L93 Difference]: Finished difference Result 171 states and 197 transitions. [2020-07-21 13:42:17,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 13:42:17,777 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-07-21 13:42:17,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:42:17,778 INFO L225 Difference]: With dead ends: 171 [2020-07-21 13:42:17,778 INFO L226 Difference]: Without dead ends: 109 [2020-07-21 13:42:17,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-21 13:42:17,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-07-21 13:42:17,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 98. [2020-07-21 13:42:17,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-07-21 13:42:17,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 112 transitions. [2020-07-21 13:42:17,787 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 112 transitions. Word has length 27 [2020-07-21 13:42:17,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:42:17,788 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 112 transitions. [2020-07-21 13:42:17,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 13:42:17,811 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 112 transitions. [2020-07-21 13:42:17,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-21 13:42:17,812 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:42:17,813 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:42:18,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:42:18,015 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:42:18,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:42:18,016 INFO L82 PathProgramCache]: Analyzing trace with hash 567478293, now seen corresponding path program 1 times [2020-07-21 13:42:18,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:42:18,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1511645212] [2020-07-21 13:42:18,017 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:42:18,132 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:42:18,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:42:18,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 26 conjunts are in the unsatisfiable core [2020-07-21 13:42:18,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:42:18,147 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-07-21 13:42:18,148 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:18,152 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:18,152 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-21 13:42:18,153 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-07-21 13:42:18,193 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:18,194 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-07-21 13:42:18,195 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:18,235 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:18,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 13:42:18,262 INFO L350 Elim1Store]: treesize reduction 89, result has 7.3 percent of original size [2020-07-21 13:42:18,263 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 1 case distinctions, treesize of input 141 treesize of output 130 [2020-07-21 13:42:18,263 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:18,281 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:18,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 13:42:18,286 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 31 [2020-07-21 13:42:18,287 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:18,308 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:18,309 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 13:42:18,309 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:356, output treesize:75 [2020-07-21 13:42:18,416 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-21 13:42:18,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 13:42:18,433 INFO L350 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2020-07-21 13:42:18,433 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 87 treesize of output 55 [2020-07-21 13:42:18,438 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 13:42:18,441 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 13:42:18,444 INFO L544 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-21 13:42:18,474 INFO L624 ElimStorePlain]: treesize reduction 8, result has 84.0 percent of original size [2020-07-21 13:42:18,488 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:18,489 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 34 [2020-07-21 13:42:18,490 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:18,495 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:18,496 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 13:42:18,496 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:94, output treesize:7 [2020-07-21 13:42:18,515 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 13:42:18,515 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:42:18,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1511645212] [2020-07-21 13:42:18,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:42:18,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-21 13:42:18,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648639696] [2020-07-21 13:42:18,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 13:42:18,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:42:18,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 13:42:18,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-21 13:42:18,517 INFO L87 Difference]: Start difference. First operand 98 states and 112 transitions. Second operand 7 states. [2020-07-21 13:42:19,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:42:19,273 INFO L93 Difference]: Finished difference Result 240 states and 268 transitions. [2020-07-21 13:42:19,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 13:42:19,273 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-07-21 13:42:19,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:42:19,275 INFO L225 Difference]: With dead ends: 240 [2020-07-21 13:42:19,276 INFO L226 Difference]: Without dead ends: 238 [2020-07-21 13:42:19,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-07-21 13:42:19,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-07-21 13:42:19,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 110. [2020-07-21 13:42:19,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-07-21 13:42:19,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 127 transitions. [2020-07-21 13:42:19,286 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 127 transitions. Word has length 28 [2020-07-21 13:42:19,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:42:19,286 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 127 transitions. [2020-07-21 13:42:19,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 13:42:19,286 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 127 transitions. [2020-07-21 13:42:19,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-21 13:42:19,302 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:42:19,302 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:42:19,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:42:19,518 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:42:19,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:42:19,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1176203735, now seen corresponding path program 1 times [2020-07-21 13:42:19,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:42:19,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [419500994] [2020-07-21 13:42:19,521 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:42:19,604 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 13:42:19,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:42:19,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 13:42:19,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:42:19,635 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 13:42:19,635 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:19,644 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:19,648 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 13:42:19,649 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:19,654 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:19,654 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 13:42:19,655 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:19 [2020-07-21 13:42:19,673 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 13:42:19,674 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:19,680 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:19,685 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 13:42:19,685 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:19,690 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:19,691 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 13:42:19,691 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:37, output treesize:7 [2020-07-21 13:42:19,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-21 13:42:19,706 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:42:19,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [419500994] [2020-07-21 13:42:19,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:42:19,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 13:42:19,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498575377] [2020-07-21 13:42:19,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 13:42:19,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:42:19,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 13:42:19,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 13:42:19,708 INFO L87 Difference]: Start difference. First operand 110 states and 127 transitions. Second operand 4 states. [2020-07-21 13:42:19,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:42:19,821 INFO L93 Difference]: Finished difference Result 160 states and 183 transitions. [2020-07-21 13:42:19,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 13:42:19,822 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-07-21 13:42:19,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:42:19,823 INFO L225 Difference]: With dead ends: 160 [2020-07-21 13:42:19,824 INFO L226 Difference]: Without dead ends: 142 [2020-07-21 13:42:19,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 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 13:42:19,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-07-21 13:42:19,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 134. [2020-07-21 13:42:19,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-07-21 13:42:19,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 158 transitions. [2020-07-21 13:42:19,834 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 158 transitions. Word has length 30 [2020-07-21 13:42:19,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:42:19,835 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 158 transitions. [2020-07-21 13:42:19,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 13:42:19,835 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 158 transitions. [2020-07-21 13:42:19,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-21 13:42:19,836 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:42:19,836 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:42:20,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:42:20,050 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:42:20,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:42:20,051 INFO L82 PathProgramCache]: Analyzing trace with hash -753501909, now seen corresponding path program 1 times [2020-07-21 13:42:20,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:42:20,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359814029] [2020-07-21 13:42:20,052 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:42:20,143 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 13:42:20,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:42:20,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 27 conjunts are in the unsatisfiable core [2020-07-21 13:42:20,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:42:20,153 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-07-21 13:42:20,154 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:20,158 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:20,159 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-07-21 13:42:20,159 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-07-21 13:42:20,186 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:20,187 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-07-21 13:42:20,187 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:20,237 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:20,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 13:42:20,247 INFO L173 IndexEqualityManager]: detected equality via solver [2020-07-21 13:42:20,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 13:42:20,261 INFO L350 Elim1Store]: treesize reduction 87, result has 9.4 percent of original size [2020-07-21 13:42:20,262 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 1 case distinctions, treesize of input 271 treesize of output 193 [2020-07-21 13:42:20,262 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:20,283 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 13:42:20,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-21 13:42:20,289 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 42 treesize of output 31 [2020-07-21 13:42:20,289 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-21 13:42:20,322 INFO L624 ElimStorePlain]: treesize reduction 4, result has 93.1 percent of original size [2020-07-21 13:42:20,324 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 13:42:20,324 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:360, output treesize:75 [2020-07-21 13:42:20,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:42:20,421 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:42:20,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359814029] [2020-07-21 13:42:20,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:42:20,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 13:42:20,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698948011] [2020-07-21 13:42:20,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 13:42:20,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:42:20,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 13:42:20,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-21 13:42:20,424 INFO L87 Difference]: Start difference. First operand 134 states and 158 transitions. Second operand 6 states. [2020-07-21 13:42:20,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:42:20,794 INFO L93 Difference]: Finished difference Result 268 states and 306 transitions. [2020-07-21 13:42:20,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 13:42:20,794 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-07-21 13:42:20,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:42:20,796 INFO L225 Difference]: With dead ends: 268 [2020-07-21 13:42:20,796 INFO L226 Difference]: Without dead ends: 227 [2020-07-21 13:42:20,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-07-21 13:42:20,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-07-21 13:42:20,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 134. [2020-07-21 13:42:20,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-07-21 13:42:20,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 157 transitions. [2020-07-21 13:42:20,818 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 157 transitions. Word has length 30 [2020-07-21 13:42:20,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:42:20,818 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 157 transitions. [2020-07-21 13:42:20,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 13:42:20,819 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 157 transitions. [2020-07-21 13:42:20,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-21 13:42:20,820 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:42:20,820 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:42:21,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:42:21,035 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:42:21,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:42:21,036 INFO L82 PathProgramCache]: Analyzing trace with hash 758661948, now seen corresponding path program 1 times [2020-07-21 13:42:21,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:42:21,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [844420349] [2020-07-21 13:42:21,037 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:42:21,157 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:42:21,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 13:42:21,158 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 13:42:21,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 13:42:21,176 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 13:42:21,202 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 13:42:21,203 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 13:42:21,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:42:21,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:42:21 BoogieIcfgContainer [2020-07-21 13:42:21,462 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 13:42:21,463 INFO L168 Benchmark]: Toolchain (without parser) took 11790.80 ms. Allocated memory was 146.3 MB in the beginning and 305.1 MB in the end (delta: 158.9 MB). Free memory was 102.5 MB in the beginning and 255.3 MB in the end (delta: -152.8 MB). Peak memory consumption was 6.1 MB. Max. memory is 7.1 GB. [2020-07-21 13:42:21,464 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 146.3 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 13:42:21,464 INFO L168 Benchmark]: CACSL2BoogieTranslator took 734.28 ms. Allocated memory was 146.3 MB in the beginning and 204.5 MB in the end (delta: 58.2 MB). Free memory was 102.1 MB in the beginning and 171.1 MB in the end (delta: -69.0 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-07-21 13:42:21,465 INFO L168 Benchmark]: Boogie Preprocessor took 94.84 ms. Allocated memory is still 204.5 MB. Free memory was 171.1 MB in the beginning and 167.7 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-07-21 13:42:21,465 INFO L168 Benchmark]: RCFGBuilder took 897.48 ms. Allocated memory is still 204.5 MB. Free memory was 167.7 MB in the beginning and 111.7 MB in the end (delta: 56.0 MB). Peak memory consumption was 56.0 MB. Max. memory is 7.1 GB. [2020-07-21 13:42:21,465 INFO L168 Benchmark]: TraceAbstraction took 10057.58 ms. Allocated memory was 204.5 MB in the beginning and 305.1 MB in the end (delta: 100.7 MB). Free memory was 111.7 MB in the beginning and 255.3 MB in the end (delta: -143.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 13:42:21,467 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 146.3 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 734.28 ms. Allocated memory was 146.3 MB in the beginning and 204.5 MB in the end (delta: 58.2 MB). Free memory was 102.1 MB in the beginning and 171.1 MB in the end (delta: -69.0 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 94.84 ms. Allocated memory is still 204.5 MB. Free memory was 171.1 MB in the beginning and 167.7 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 897.48 ms. Allocated memory is still 204.5 MB. Free memory was 167.7 MB in the beginning and 111.7 MB in the end (delta: 56.0 MB). Peak memory consumption was 56.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10057.58 ms. Allocated memory was 204.5 MB in the beginning and 305.1 MB in the end (delta: 100.7 MB). Free memory was 111.7 MB in the beginning and 255.3 MB in the end (delta: -143.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1029]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L992] SLL* list = malloc(sizeof(SLL)); [L993] list->next = ((void*)0) [L994] list->prev = ((void*)0) VAL [list={11798:0}, malloc(sizeof(SLL))={11798:0}] [L995] COND FALSE !(!(list != ((void*)0))) VAL [list={11798:0}, malloc(sizeof(SLL))={11798:0}] [L995] COND FALSE !(__VERIFIER_nondet_int()) [L995] list->inner = malloc(sizeof(SLL)) [L995] EXPR list->inner [L995] list->inner->next = ((void*)0) [L995] EXPR list->inner [L995] list->inner->inner = ((void*)0) [L995] EXPR list->inner [L995] EXPR list->inner != ((void*)0) || list->inner == ((void*)0) VAL [list={11798:0}, list->inner={-1:0}, list->inner != ((void*)0) || list->inner == ((void*)0)=1, malloc(sizeof(SLL))={11798:0}, malloc(sizeof(SLL))={-1:0}] [L995] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0))) [L997] SLL* end = list; VAL [end={11798:0}, list={11798:0}, malloc(sizeof(SLL))={11798:0}, malloc(sizeof(SLL))={-1:0}] [L1000] COND FALSE !(__VERIFIER_nondet_int()) [L1011] end = ((void*)0) [L1012] end = list VAL [end={11798:0}, list={11798:0}, malloc(sizeof(SLL))={11798:0}, malloc(sizeof(SLL))={-1:0}] [L1015] COND FALSE !(!(((void*)0) != end)) VAL [end={11798:0}, list={11798:0}, malloc(sizeof(SLL))={11798:0}, malloc(sizeof(SLL))={-1:0}] [L1017] COND TRUE ((void*)0) != end [L1019] int len = 0; [L1020] EXPR end->inner [L1020] SLL* inner = end->inner; [L1021] COND TRUE ((void*)0) != inner VAL [end={11798:0}, inner={-1:0}, len=0, list={11798:0}, malloc(sizeof(SLL))={11798:0}, malloc(sizeof(SLL))={-1:0}] [L1023] COND TRUE len == 0 [L1024] len = 1 VAL [end={11798:0}, inner={-1:0}, len=1, list={11798:0}, malloc(sizeof(SLL))={11798:0}, malloc(sizeof(SLL))={-1:0}] [L1027] COND FALSE !(!(((void*)0) != inner)) VAL [end={11798:0}, inner={-1:0}, len=1, list={11798:0}, malloc(sizeof(SLL))={11798:0}, malloc(sizeof(SLL))={-1:0}] [L1028] EXPR inner->inner VAL [end={11798:0}, inner={-1:0}, inner->inner={0:0}, len=1, list={11798:0}, malloc(sizeof(SLL))={11798:0}, malloc(sizeof(SLL))={-1:0}] [L1028] COND FALSE !(!(((void*)0) == inner->inner)) [L1029] EXPR inner->next VAL [end={11798:0}, inner={-1:0}, inner->next={0:0}, len=1, list={11798:0}, malloc(sizeof(SLL))={11798:0}, malloc(sizeof(SLL))={-1:0}] [L1029] COND TRUE !(((void*)0) != inner->next) [L1029] __VERIFIER_error() VAL [end={11798:0}, inner={-1:0}, len=1, list={11798:0}, malloc(sizeof(SLL))={11798:0}, malloc(sizeof(SLL))={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 88 locations, 13 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 9.9s, OverallIterations: 15, TraceHistogramMax: 1, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1149 SDtfs, 1364 SDslu, 1989 SDs, 0 SdLazy, 897 SolverSat, 85 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 318 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=134occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 561 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 336 NumberOfCodeBlocks, 251 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 291 ConstructedInterpolants, 6 QuantifiedInterpolants, 88269 SizeOfPredicates, 76 NumberOfNonLiveVariables, 974 ConjunctsInSsa, 155 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...