/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/verifythis/tree_del_rec_incorrect.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 11:19:55,878 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 11:19:55,883 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 11:19:55,910 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 11:19:55,910 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 11:19:55,913 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 11:19:55,915 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 11:19:55,931 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 11:19:55,934 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 11:19:55,936 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 11:19:55,938 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 11:19:55,939 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 11:19:55,940 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 11:19:55,941 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 11:19:55,943 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 11:19:55,944 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 11:19:55,945 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 11:19:55,946 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 11:19:55,948 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 11:19:55,951 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 11:19:55,953 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 11:19:55,955 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 11:19:55,956 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 11:19:55,958 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 11:19:55,961 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 11:19:55,962 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 11:19:55,962 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 11:19:55,963 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 11:19:55,964 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 11:19:55,965 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-07-20 11:19:55,973 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 11:19:55,974 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 11:19:55,975 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 11:19:55,976 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 [2020-07-20 11:19:55,998 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 11:19:55,999 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 11:19:56,001 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 11:19:56,002 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 11:19:56,002 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 11:19:56,002 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 11:19:56,003 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 11:19:56,003 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 11:19:56,003 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 11:19:56,003 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 11:19:56,003 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 11:19:56,004 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 11:19:56,004 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 11:19:56,004 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 11:19:56,004 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 11:19:56,004 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 11:19:56,005 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 11:19:56,005 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 11:19:56,005 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 11:19:56,005 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 11:19:56,006 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 11:19:56,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:19:56,006 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 11:19:56,006 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 11:19:56,007 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 11:19:56,007 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 11:19:56,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:19:56,007 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 11:19:56,008 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 11:19:56,008 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-20 11:19:56,474 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 11:19:56,494 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 11:19:56,500 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 11:19:56,502 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 11:19:56,503 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 11:19:56,504 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/tree_del_rec_incorrect.c [2020-07-20 11:19:56,604 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bc3d6293/ead50f5a0c3c4a3abf43237e19ea4c56/FLAGbc3acf377 [2020-07-20 11:19:57,245 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 11:19:57,247 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/verifythis/tree_del_rec_incorrect.c [2020-07-20 11:19:57,258 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bc3d6293/ead50f5a0c3c4a3abf43237e19ea4c56/FLAGbc3acf377 [2020-07-20 11:19:57,499 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bc3d6293/ead50f5a0c3c4a3abf43237e19ea4c56 [2020-07-20 11:19:57,518 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 11:19:57,528 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 11:19:57,530 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 11:19:57,530 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 11:19:57,536 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 11:19:57,538 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:19:57" (1/1) ... [2020-07-20 11:19:57,543 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2994a574 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:19:57, skipping insertion in model container [2020-07-20 11:19:57,543 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:19:57" (1/1) ... [2020-07-20 11:19:57,558 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 11:19:57,599 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 11:19:57,843 WARN L1484 CHandler]: Possible shadowing of function min [2020-07-20 11:19:57,846 WARN L1484 CHandler]: Possible shadowing of function min [2020-07-20 11:19:57,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:19:57,898 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 11:19:57,922 WARN L1484 CHandler]: Possible shadowing of function min [2020-07-20 11:19:57,925 WARN L1484 CHandler]: Possible shadowing of function min [2020-07-20 11:19:58,084 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:19:58,117 INFO L208 MainTranslator]: Completed translation [2020-07-20 11:19:58,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:19:58 WrapperNode [2020-07-20 11:19:58,118 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 11:19:58,119 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 11:19:58,119 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 11:19:58,120 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 11:19:58,140 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:19:58" (1/1) ... [2020-07-20 11:19:58,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:19:58" (1/1) ... [2020-07-20 11:19:58,161 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:19:58" (1/1) ... [2020-07-20 11:19:58,161 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:19:58" (1/1) ... [2020-07-20 11:19:58,185 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:19:58" (1/1) ... [2020-07-20 11:19:58,195 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:19:58" (1/1) ... [2020-07-20 11:19:58,199 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:19:58" (1/1) ... [2020-07-20 11:19:58,205 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 11:19:58,206 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 11:19:58,207 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 11:19:58,207 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 11:19:58,209 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:19:58" (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 [2020-07-20 11:19:58,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 11:19:58,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 11:19:58,338 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 11:19:58,340 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 11:19:58,341 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2020-07-20 11:19:58,341 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2020-07-20 11:19:58,341 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_del [2020-07-20 11:19:58,341 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2020-07-20 11:19:58,343 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2020-07-20 11:19:58,343 INFO L138 BoogieDeclarations]: Found implementation of procedure task [2020-07-20 11:19:58,343 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 11:19:58,346 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-07-20 11:19:58,347 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-20 11:19:58,347 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 11:19:58,347 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 11:19:58,348 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 11:19:58,348 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-20 11:19:58,348 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 11:19:58,348 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 11:19:58,349 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 11:19:58,349 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 11:19:58,349 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2020-07-20 11:19:58,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 11:19:58,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 11:19:58,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 11:19:58,350 INFO L130 BoogieDeclarations]: Found specification of procedure min [2020-07-20 11:19:58,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 11:19:58,351 INFO L130 BoogieDeclarations]: Found specification of procedure tree_del [2020-07-20 11:19:58,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 11:19:58,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 11:19:58,352 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2020-07-20 11:19:58,352 INFO L130 BoogieDeclarations]: Found specification of procedure size [2020-07-20 11:19:58,353 INFO L130 BoogieDeclarations]: Found specification of procedure task [2020-07-20 11:19:58,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 11:19:58,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-07-20 11:19:58,353 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 11:19:58,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 11:19:58,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 11:19:59,045 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 11:19:59,046 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 11:19:59,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:19:59 BoogieIcfgContainer [2020-07-20 11:19:59,054 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 11:19:59,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 11:19:59,056 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 11:19:59,061 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 11:19:59,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 11:19:57" (1/3) ... [2020-07-20 11:19:59,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38d23282 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:19:59, skipping insertion in model container [2020-07-20 11:19:59,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:19:58" (2/3) ... [2020-07-20 11:19:59,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38d23282 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:19:59, skipping insertion in model container [2020-07-20 11:19:59,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:19:59" (3/3) ... [2020-07-20 11:19:59,067 INFO L109 eAbstractionObserver]: Analyzing ICFG tree_del_rec_incorrect.c [2020-07-20 11:19:59,082 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 11:19:59,097 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 11:19:59,115 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 11:19:59,150 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 11:19:59,150 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 11:19:59,151 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 11:19:59,151 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 11:19:59,151 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 11:19:59,151 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 11:19:59,151 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 11:19:59,152 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 11:19:59,182 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states. [2020-07-20 11:19:59,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-07-20 11:19:59,196 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:19:59,197 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:19:59,198 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:19:59,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:19:59,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1217563597, now seen corresponding path program 1 times [2020-07-20 11:19:59,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:19:59,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1707621520] [2020-07-20 11:19:59,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:19:59,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:19:59,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 11:19:59,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:19:59,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:19:59,504 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:19:59,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1707621520] [2020-07-20 11:19:59,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:19:59,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 11:19:59,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004218633] [2020-07-20 11:19:59,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 11:19:59,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:19:59,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 11:19:59,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 11:19:59,543 INFO L87 Difference]: Start difference. First operand 95 states. Second operand 2 states. [2020-07-20 11:19:59,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:19:59,592 INFO L93 Difference]: Finished difference Result 159 states and 202 transitions. [2020-07-20 11:19:59,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 11:19:59,595 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 44 [2020-07-20 11:19:59,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:19:59,620 INFO L225 Difference]: With dead ends: 159 [2020-07-20 11:19:59,621 INFO L226 Difference]: Without dead ends: 87 [2020-07-20 11:19:59,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 11:19:59,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-07-20 11:19:59,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-07-20 11:19:59,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-07-20 11:19:59,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 108 transitions. [2020-07-20 11:19:59,708 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 108 transitions. Word has length 44 [2020-07-20 11:19:59,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:19:59,711 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 108 transitions. [2020-07-20 11:19:59,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 11:19:59,712 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 108 transitions. [2020-07-20 11:19:59,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-07-20 11:19:59,717 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:19:59,717 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:19:59,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:19:59,934 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:19:59,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:19:59,935 INFO L82 PathProgramCache]: Analyzing trace with hash -471380145, now seen corresponding path program 1 times [2020-07-20 11:19:59,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:19:59,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [407296446] [2020-07-20 11:19:59,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:20:00,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:20:00,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 11:20:00,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:20:00,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:20:00,185 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:20:00,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [407296446] [2020-07-20 11:20:00,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:20:00,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-20 11:20:00,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341046215] [2020-07-20 11:20:00,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 11:20:00,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:20:00,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 11:20:00,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-20 11:20:00,192 INFO L87 Difference]: Start difference. First operand 87 states and 108 transitions. Second operand 7 states. [2020-07-20 11:20:00,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:20:00,291 INFO L93 Difference]: Finished difference Result 145 states and 183 transitions. [2020-07-20 11:20:00,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 11:20:00,292 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 44 [2020-07-20 11:20:00,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:20:00,298 INFO L225 Difference]: With dead ends: 145 [2020-07-20 11:20:00,299 INFO L226 Difference]: Without dead ends: 89 [2020-07-20 11:20:00,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-20 11:20:00,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-07-20 11:20:00,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2020-07-20 11:20:00,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-07-20 11:20:00,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 112 transitions. [2020-07-20 11:20:00,322 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 112 transitions. Word has length 44 [2020-07-20 11:20:00,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:20:00,323 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 112 transitions. [2020-07-20 11:20:00,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 11:20:00,324 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 112 transitions. [2020-07-20 11:20:00,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-07-20 11:20:00,327 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:20:00,327 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:20:00,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:20:00,543 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:20:00,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:20:00,545 INFO L82 PathProgramCache]: Analyzing trace with hash 800610240, now seen corresponding path program 1 times [2020-07-20 11:20:00,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:20:00,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1209693327] [2020-07-20 11:20:00,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:20:00,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:20:00,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 25 conjunts are in the unsatisfiable core [2020-07-20 11:20:00,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:20:00,793 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-20 11:20:00,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:20:01,024 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-20 11:20:01,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1209693327] [2020-07-20 11:20:01,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:20:01,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-07-20 11:20:01,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618010481] [2020-07-20 11:20:01,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 11:20:01,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:20:01,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 11:20:01,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-07-20 11:20:01,028 INFO L87 Difference]: Start difference. First operand 89 states and 112 transitions. Second operand 9 states. [2020-07-20 11:20:01,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:20:01,228 INFO L93 Difference]: Finished difference Result 158 states and 200 transitions. [2020-07-20 11:20:01,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 11:20:01,229 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-07-20 11:20:01,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:20:01,232 INFO L225 Difference]: With dead ends: 158 [2020-07-20 11:20:01,233 INFO L226 Difference]: Without dead ends: 91 [2020-07-20 11:20:01,235 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-07-20 11:20:01,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-07-20 11:20:01,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2020-07-20 11:20:01,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-07-20 11:20:01,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 115 transitions. [2020-07-20 11:20:01,253 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 115 transitions. Word has length 56 [2020-07-20 11:20:01,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:20:01,253 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 115 transitions. [2020-07-20 11:20:01,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 11:20:01,253 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 115 transitions. [2020-07-20 11:20:01,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-07-20 11:20:01,257 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:20:01,257 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2020-07-20 11:20:01,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:20:01,471 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:20:01,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:20:01,472 INFO L82 PathProgramCache]: Analyzing trace with hash 487198237, now seen corresponding path program 1 times [2020-07-20 11:20:01,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:20:01,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [378299767] [2020-07-20 11:20:01,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:20:01,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:20:01,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 27 conjunts are in the unsatisfiable core [2020-07-20 11:20:01,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:20:01,819 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-07-20 11:20:01,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:20:02,086 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-07-20 11:20:02,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [378299767] [2020-07-20 11:20:02,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:20:02,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2020-07-20 11:20:02,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257524688] [2020-07-20 11:20:02,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-20 11:20:02,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:20:02,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-20 11:20:02,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-07-20 11:20:02,090 INFO L87 Difference]: Start difference. First operand 91 states and 115 transitions. Second operand 14 states. [2020-07-20 11:20:02,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:20:02,531 INFO L93 Difference]: Finished difference Result 157 states and 199 transitions. [2020-07-20 11:20:02,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-20 11:20:02,533 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 66 [2020-07-20 11:20:02,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:20:02,537 INFO L225 Difference]: With dead ends: 157 [2020-07-20 11:20:02,538 INFO L226 Difference]: Without dead ends: 93 [2020-07-20 11:20:02,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2020-07-20 11:20:02,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-07-20 11:20:02,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-07-20 11:20:02,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-07-20 11:20:02,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 118 transitions. [2020-07-20 11:20:02,575 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 118 transitions. Word has length 66 [2020-07-20 11:20:02,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:20:02,576 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 118 transitions. [2020-07-20 11:20:02,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-20 11:20:02,577 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 118 transitions. [2020-07-20 11:20:02,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-07-20 11:20:02,585 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:20:02,586 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2020-07-20 11:20:02,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:20:02,805 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:20:02,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:20:02,806 INFO L82 PathProgramCache]: Analyzing trace with hash -505239167, now seen corresponding path program 1 times [2020-07-20 11:20:02,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:20:02,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [403122762] [2020-07-20 11:20:02,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:20:02,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:20:02,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 39 conjunts are in the unsatisfiable core [2020-07-20 11:20:02,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:20:03,085 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-07-20 11:20:03,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:20:03,307 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:20:03,486 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-07-20 11:20:03,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [403122762] [2020-07-20 11:20:03,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:20:03,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 18 [2020-07-20 11:20:03,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614801920] [2020-07-20 11:20:03,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-07-20 11:20:03,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:20:03,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-07-20 11:20:03,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2020-07-20 11:20:03,501 INFO L87 Difference]: Start difference. First operand 93 states and 118 transitions. Second operand 18 states. [2020-07-20 11:20:04,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:20:04,013 INFO L93 Difference]: Finished difference Result 149 states and 191 transitions. [2020-07-20 11:20:04,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-20 11:20:04,014 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 79 [2020-07-20 11:20:04,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:20:04,017 INFO L225 Difference]: With dead ends: 149 [2020-07-20 11:20:04,017 INFO L226 Difference]: Without dead ends: 97 [2020-07-20 11:20:04,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 142 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2020-07-20 11:20:04,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-07-20 11:20:04,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-07-20 11:20:04,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-07-20 11:20:04,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 122 transitions. [2020-07-20 11:20:04,034 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 122 transitions. Word has length 79 [2020-07-20 11:20:04,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:20:04,035 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 122 transitions. [2020-07-20 11:20:04,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-07-20 11:20:04,036 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 122 transitions. [2020-07-20 11:20:04,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-07-20 11:20:04,039 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:20:04,039 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1] [2020-07-20 11:20:04,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:20:04,253 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:20:04,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:20:04,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1062270604, now seen corresponding path program 1 times [2020-07-20 11:20:04,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:20:04,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449067189] [2020-07-20 11:20:04,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:20:04,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 11:20:04,453 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 11:20:04,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 11:20:04,511 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 11:20:04,587 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 11:20:04,588 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 11:20:04,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:20:04,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 11:20:04 BoogieIcfgContainer [2020-07-20 11:20:04,887 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 11:20:04,891 INFO L168 Benchmark]: Toolchain (without parser) took 7369.58 ms. Allocated memory was 143.7 MB in the beginning and 294.6 MB in the end (delta: 151.0 MB). Free memory was 99.8 MB in the beginning and 238.5 MB in the end (delta: -138.7 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-07-20 11:20:04,892 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 143.7 MB. Free memory is still 118.3 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 11:20:04,893 INFO L168 Benchmark]: CACSL2BoogieTranslator took 588.43 ms. Allocated memory was 143.7 MB in the beginning and 199.2 MB in the end (delta: 55.6 MB). Free memory was 99.4 MB in the beginning and 176.4 MB in the end (delta: -77.1 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. [2020-07-20 11:20:04,894 INFO L168 Benchmark]: Boogie Preprocessor took 86.73 ms. Allocated memory is still 199.2 MB. Free memory was 176.4 MB in the beginning and 173.2 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-07-20 11:20:04,895 INFO L168 Benchmark]: RCFGBuilder took 847.51 ms. Allocated memory is still 199.2 MB. Free memory was 173.2 MB in the beginning and 140.2 MB in the end (delta: 33.0 MB). Peak memory consumption was 33.0 MB. Max. memory is 7.1 GB. [2020-07-20 11:20:04,896 INFO L168 Benchmark]: TraceAbstraction took 5831.17 ms. Allocated memory was 199.2 MB in the beginning and 294.6 MB in the end (delta: 95.4 MB). Free memory was 140.2 MB in the beginning and 238.5 MB in the end (delta: -98.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 11:20:04,899 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 143.7 MB. Free memory is still 118.3 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 588.43 ms. Allocated memory was 143.7 MB in the beginning and 199.2 MB in the end (delta: 55.6 MB). Free memory was 99.4 MB in the beginning and 176.4 MB in the end (delta: -77.1 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 86.73 ms. Allocated memory is still 199.2 MB. Free memory was 176.4 MB in the beginning and 173.2 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 847.51 ms. Allocated memory is still 199.2 MB. Free memory was 173.2 MB in the beginning and 140.2 MB in the end (delta: 33.0 MB). Peak memory consumption was 33.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5831.17 ms. Allocated memory was 199.2 MB in the beginning and 294.6 MB in the end (delta: 95.4 MB). Free memory was 140.2 MB in the beginning and 238.5 MB in the end (delta: -98.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 14]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L96] CALL, EXPR nondet_tree() [L23] COND FALSE !(__VERIFIER_nondet_bool()) [L26] struct node *n = (struct node *)malloc(sizeof(struct node)); [L27] n->data = __VERIFIER_nondet_int() [L28] CALL, EXPR nondet_tree() [L23] COND TRUE __VERIFIER_nondet_bool() [L24] return 0; VAL [\result={0:0}] [L28] RET, EXPR nondet_tree() VAL [malloc(sizeof(struct node))={-2:0}, n={-2:0}, nondet_tree()={0:0}] [L28] n->left = nondet_tree() [L29] CALL, EXPR nondet_tree() [L23] COND TRUE __VERIFIER_nondet_bool() [L24] return 0; VAL [\result={0:0}] [L29] RET, EXPR nondet_tree() VAL [malloc(sizeof(struct node))={-2:0}, n={-2:0}, nondet_tree()={0:0}] [L29] n->right = nondet_tree() [L30] return n; VAL [\result={-2:0}, malloc(sizeof(struct node))={-2:0}, n={-2:0}] [L96] RET, EXPR nondet_tree() VAL [nondet_tree()={-2:0}] [L96] CALL task(nondet_tree()) VAL [t={-2:0}] [L74] CALL, EXPR min(t) VAL [n={-2:0}] [L35] COND FALSE !(!n) [L38] EXPR n->left VAL [n={-2:0}, n={-2:0}, n->left={0:0}] [L38] CALL, EXPR min(n->left) VAL [n={0:0}] [L35] COND TRUE !n [L36] return 2147483647; VAL [\result=2147483647, n={0:0}, n={0:0}] [L38] RET, EXPR min(n->left) VAL [min(n->left)=2147483647, n={-2:0}, n={-2:0}, n->left={0:0}] [L38] int a = min(n->left); [L39] EXPR n->right VAL [a=2147483647, n={-2:0}, n={-2:0}, n->right={0:0}] [L39] CALL, EXPR min(n->right) VAL [n={0:0}] [L35] COND TRUE !n [L36] return 2147483647; VAL [\result=2147483647, n={0:0}, n={0:0}] [L39] RET, EXPR min(n->right) VAL [a=2147483647, min(n->right)=2147483647, n={-2:0}, n={-2:0}, n->right={0:0}] [L39] int b = min(n->right); [L40] COND TRUE a <= b [L40] return a; VAL [\result=2147483647, a=2147483647, b=2147483647, n={-2:0}, n={-2:0}] [L74] RET, EXPR min(t) VAL [min(t)=2147483647, t={-2:0}, t={-2:0}] [L74] int a = min(t); [L75] int b; VAL [a=2147483647, b={2:0}, t={-2:0}, t={-2:0}] [L77] CALL, EXPR size(t) VAL [t={-2:0}] [L69] COND FALSE !(!t) [L70] EXPR t->left VAL [t={-2:0}, t={-2:0}, t->left={0:0}] [L70] CALL, EXPR size(t->left) VAL [t={0:0}] [L69] COND TRUE !t [L69] return 0; VAL [\result=0, t={0:0}, t={0:0}] [L70] RET, EXPR size(t->left) VAL [size(t->left)=0, t={-2:0}, t={-2:0}, t->left={0:0}] [L70] EXPR t->right VAL [size(t->left)=0, t={-2:0}, t={-2:0}, t->left={0:0}, t->right={0:0}] [L70] CALL, EXPR size(t->right) VAL [t={0:0}] [L69] COND TRUE !t [L69] return 0; VAL [\result=0, t={0:0}, t={0:0}] [L70] RET, EXPR size(t->right) VAL [size(t->left)=0, size(t->right)=0, t={-2:0}, t={-2:0}, t->left={0:0}, t->right={0:0}] [L70] return size(t->left) + size(t->right) + 1; [L77] RET, EXPR size(t) VAL [a=2147483647, b={2:0}, size(t)=1, t={-2:0}, t={-2:0}] [L77] int n = size(t); [L78] CALL assume_abort_if_not(n != 0) VAL [\old(cond)=1] [L10] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L78] RET assume_abort_if_not(n != 0) VAL [a=2147483647, b={2:0}, n=1, t={-2:0}, t={-2:0}] [L79] EXPR, FCALL calloc(n, sizeof(int)) VAL [a=2147483647, b={2:0}, calloc(n, sizeof(int))={-1:0}, n=1, t={-2:0}, t={-2:0}] [L79] int *x = calloc(n, sizeof(int)); VAL [a=2147483647, b={2:0}, calloc(n, sizeof(int))={-1:0}, n=1, t={-2:0}, t={-2:0}, x={-1:0}] [L80] CALL tree_inorder(t, x, n) VAL [\old(i)=1, a={-1:0}, t={-2:0}] [L58] COND FALSE !(!t) [L61] EXPR t->left VAL [\old(i)=1, a={-1:0}, a={-1:0}, i=1, t={-2:0}, t={-2:0}, t->left={0:0}] [L61] CALL, EXPR tree_inorder(t->left, a, i) VAL [\old(i)=1, a={-1:0}, t={0:0}] [L58] COND TRUE !t [L59] return i; VAL [\old(i)=1, \result=1, a={-1:0}, a={-1:0}, i=1, t={0:0}, t={0:0}] [L61] RET, EXPR tree_inorder(t->left, a, i) VAL [\old(i)=1, a={-1:0}, a={-1:0}, i=1, t={-2:0}, t={-2:0}, t->left={0:0}, tree_inorder(t->left, a, i)=1] [L61] i = tree_inorder(t->left, a, i) [L62] EXPR i++ [L62] EXPR t->data [L62] a[i++] = t->data [L63] EXPR t->right VAL [\old(i)=1, a={-1:0}, a={-1:0}, i=2, t={-2:0}, t={-2:0}, t->right={0:0}] [L63] CALL, EXPR tree_inorder(t->right, a, i) VAL [\old(i)=2, a={-1:0}, t={0:0}] [L58] COND TRUE !t [L59] return i; VAL [\old(i)=2, \result=2, a={-1:0}, a={-1:0}, i=2, t={0:0}, t={0:0}] [L63] RET, EXPR tree_inorder(t->right, a, i) VAL [\old(i)=1, a={-1:0}, a={-1:0}, i=2, t={-2:0}, t={-2:0}, t->right={0:0}, tree_inorder(t->right, a, i)=2] [L63] i = tree_inorder(t->right, a, i) [L64] return i; VAL [\old(i)=1, \result=2, a={-1:0}, a={-1:0}, i=2, t={-2:0}, t={-2:0}] [L80] RET tree_inorder(t, x, n) VAL [a=2147483647, b={2:0}, calloc(n, sizeof(int))={-1:0}, n=1, t={-2:0}, t={-2:0}, tree_inorder(t, x, n)=2, x={-1:0}] [L81] EXPR x[0] VAL [a=2147483647, b={2:0}, calloc(n, sizeof(int))={-1:0}, n=1, t={-2:0}, t={-2:0}, x={-1:0}, x[0]=0] [L81] CALL __VERIFIER_assert(a == x[0]) VAL [\old(cond)=0] [L14] COND TRUE !cond VAL [\old(cond)=0, cond=0] [L14] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 95 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.6s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 514 SDtfs, 126 SDslu, 3112 SDs, 0 SdLazy, 653 SolverSat, 87 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 503 GetRequests, 447 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=97occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 380 NumberOfCodeBlocks, 380 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 482 ConstructedInterpolants, 0 QuantifiedInterpolants, 74141 SizeOfPredicates, 28 NumberOfNonLiveVariables, 1370 ConjunctsInSsa, 103 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 120/132 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...