/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/verifythis/tree_del_iter.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 22:52:40,561 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 22:52:40,564 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 22:52:40,579 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 22:52:40,579 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 22:52:40,580 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 22:52:40,582 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 22:52:40,585 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 22:52:40,588 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 22:52:40,590 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 22:52:40,592 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 22:52:40,594 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 22:52:40,595 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 22:52:40,596 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 22:52:40,597 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 22:52:40,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 22:52:40,602 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 22:52:40,603 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 22:52:40,606 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 22:52:40,609 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 22:52:40,611 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 22:52:40,612 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 22:52:40,615 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 22:52:40,616 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 22:52:40,620 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 22:52:40,633 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 22:52:40,634 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 22:52:40,634 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 22:52:40,635 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 [2020-07-17 22:52:40,653 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 22:52:40,653 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 22:52:40,656 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 22:52:40,656 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 22:52:40,657 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 22:52:40,659 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 22:52:40,660 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 22:52:40,660 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 22:52:40,660 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 22:52:40,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 22:52:40,660 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 22:52:40,661 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 22:52:40,661 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 22:52:40,661 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 22:52:40,664 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 22:52:40,664 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 22:52:40,664 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 22:52:40,664 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 22:52:40,665 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 22:52:40,665 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 22:52:40,665 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 22:52:40,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 22:52:40,666 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 22:52:40,666 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 22:52:40,666 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 22:52:40,667 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 22:52:40,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 22:52:40,668 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 22:52:40,669 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 22:52:40,669 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 22:52:41,061 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 22:52:41,085 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 22:52:41,090 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 22:52:41,092 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 22:52:41,093 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 22:52:41,094 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/tree_del_iter.c [2020-07-17 22:52:41,196 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bbdf892f/5744fd831bf54fcf97f44523347a29f0/FLAG538d21c14 [2020-07-17 22:52:41,940 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 22:52:41,940 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/verifythis/tree_del_iter.c [2020-07-17 22:52:41,953 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bbdf892f/5744fd831bf54fcf97f44523347a29f0/FLAG538d21c14 [2020-07-17 22:52:42,217 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bbdf892f/5744fd831bf54fcf97f44523347a29f0 [2020-07-17 22:52:42,228 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 22:52:42,233 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 22:52:42,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 22:52:42,235 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 22:52:42,241 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 22:52:42,246 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:52:42" (1/1) ... [2020-07-17 22:52:42,251 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4731d05c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:52:42, skipping insertion in model container [2020-07-17 22:52:42,251 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:52:42" (1/1) ... [2020-07-17 22:52:42,265 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 22:52:42,305 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 22:52:42,556 WARN L1484 CHandler]: Possible shadowing of function min [2020-07-17 22:52:42,583 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:52:42,607 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 22:52:42,734 WARN L1484 CHandler]: Possible shadowing of function min [2020-07-17 22:52:42,752 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:52:42,779 INFO L208 MainTranslator]: Completed translation [2020-07-17 22:52:42,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:52:42 WrapperNode [2020-07-17 22:52:42,780 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 22:52:42,781 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 22:52:42,781 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 22:52:42,781 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 22:52:42,799 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:52:42" (1/1) ... [2020-07-17 22:52:42,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:52:42" (1/1) ... [2020-07-17 22:52:42,817 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:52:42" (1/1) ... [2020-07-17 22:52:42,817 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:52:42" (1/1) ... [2020-07-17 22:52:42,860 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:52:42" (1/1) ... [2020-07-17 22:52:42,868 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:52:42" (1/1) ... [2020-07-17 22:52:42,873 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:52:42" (1/1) ... [2020-07-17 22:52:42,878 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 22:52:42,879 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 22:52:42,879 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 22:52:42,879 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 22:52:42,880 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:52:42" (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 [2020-07-17 22:52:42,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 22:52:42,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 22:52:42,952 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_cycle_if_not [2020-07-17 22:52:42,953 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-17 22:52:42,953 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2020-07-17 22:52:42,953 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2020-07-17 22:52:42,953 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_del [2020-07-17 22:52:42,953 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2020-07-17 22:52:42,954 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2020-07-17 22:52:42,954 INFO L138 BoogieDeclarations]: Found implementation of procedure task [2020-07-17 22:52:42,954 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 22:52:42,954 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-07-17 22:52:42,954 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-17 22:52:42,955 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-17 22:52:42,955 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-17 22:52:42,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 22:52:42,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-17 22:52:42,955 INFO L130 BoogieDeclarations]: Found specification of procedure assume_cycle_if_not [2020-07-17 22:52:42,956 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 22:52:42,956 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-17 22:52:42,957 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2020-07-17 22:52:42,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-17 22:52:42,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 22:52:42,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-17 22:52:42,958 INFO L130 BoogieDeclarations]: Found specification of procedure min [2020-07-17 22:52:42,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 22:52:42,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-17 22:52:42,959 INFO L130 BoogieDeclarations]: Found specification of procedure tree_del [2020-07-17 22:52:42,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 22:52:42,959 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2020-07-17 22:52:42,959 INFO L130 BoogieDeclarations]: Found specification of procedure size [2020-07-17 22:52:42,959 INFO L130 BoogieDeclarations]: Found specification of procedure task [2020-07-17 22:52:42,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-17 22:52:42,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-07-17 22:52:42,960 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 22:52:42,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 22:52:42,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 22:52:43,851 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 22:52:43,852 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-07-17 22:52:43,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:52:43 BoogieIcfgContainer [2020-07-17 22:52:43,863 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 22:52:43,864 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 22:52:43,864 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 22:52:43,867 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 22:52:43,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 10:52:42" (1/3) ... [2020-07-17 22:52:43,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9942af5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:52:43, skipping insertion in model container [2020-07-17 22:52:43,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:52:42" (2/3) ... [2020-07-17 22:52:43,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9942af5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:52:43, skipping insertion in model container [2020-07-17 22:52:43,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:52:43" (3/3) ... [2020-07-17 22:52:43,871 INFO L109 eAbstractionObserver]: Analyzing ICFG tree_del_iter.c [2020-07-17 22:52:43,885 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 22:52:43,893 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 22:52:43,913 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 22:52:43,943 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 22:52:43,944 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 22:52:43,944 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 22:52:43,944 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 22:52:43,944 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 22:52:43,944 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 22:52:43,945 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 22:52:43,945 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 22:52:43,971 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states. [2020-07-17 22:52:43,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-07-17 22:52:43,981 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:52:43,982 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] [2020-07-17 22:52:43,983 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:52:43,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:52:43,992 INFO L82 PathProgramCache]: Analyzing trace with hash 806421993, now seen corresponding path program 1 times [2020-07-17 22:52:44,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:52:44,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250997649] [2020-07-17 22:52:44,007 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:52:44,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:52:44,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:52:44,382 INFO L280 TraceCheckUtils]: 0: Hoare triple {130#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {101#true} is VALID [2020-07-17 22:52:44,383 INFO L280 TraceCheckUtils]: 1: Hoare triple {101#true} assume true; {101#true} is VALID [2020-07-17 22:52:44,383 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {101#true} {101#true} #195#return; {101#true} is VALID [2020-07-17 22:52:44,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:52:44,461 INFO L280 TraceCheckUtils]: 0: Hoare triple {131#(and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} assume 0 != #t~nondet1 % 256;havoc #t~nondet1;#res.base, #res.offset := 0, 0; {101#true} is VALID [2020-07-17 22:52:44,462 INFO L280 TraceCheckUtils]: 1: Hoare triple {101#true} assume true; {101#true} is VALID [2020-07-17 22:52:44,462 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {101#true} {101#true} #153#return; {101#true} is VALID [2020-07-17 22:52:44,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:52:44,488 INFO L280 TraceCheckUtils]: 0: Hoare triple {101#true} ~n.base, ~n.offset := #in~n.base, #in~n.offset; {101#true} is VALID [2020-07-17 22:52:44,489 INFO L280 TraceCheckUtils]: 1: Hoare triple {101#true} assume ~n.base == 0 && ~n.offset == 0;#res := 2147483647; {101#true} is VALID [2020-07-17 22:52:44,489 INFO L280 TraceCheckUtils]: 2: Hoare triple {101#true} assume true; {101#true} is VALID [2020-07-17 22:52:44,490 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {101#true} {101#true} #165#return; {101#true} is VALID [2020-07-17 22:52:44,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:52:44,526 INFO L280 TraceCheckUtils]: 0: Hoare triple {101#true} ~t.base, ~t.offset := #in~t.base, #in~t.offset; {101#true} is VALID [2020-07-17 22:52:44,527 INFO L280 TraceCheckUtils]: 1: Hoare triple {101#true} assume ~t.base == 0 && ~t.offset == 0;#res := 0; {132#(= 0 |size_#res|)} is VALID [2020-07-17 22:52:44,530 INFO L280 TraceCheckUtils]: 2: Hoare triple {132#(= 0 |size_#res|)} assume true; {132#(= 0 |size_#res|)} is VALID [2020-07-17 22:52:44,533 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {132#(= 0 |size_#res|)} {101#true} #167#return; {117#(= 0 |task_#t~ret29|)} is VALID [2020-07-17 22:52:44,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:52:44,597 INFO L280 TraceCheckUtils]: 0: Hoare triple {101#true} ~cond := #in~cond; {133#(= assume_cycle_if_not_~cond |assume_cycle_if_not_#in~cond|)} is VALID [2020-07-17 22:52:44,600 INFO L280 TraceCheckUtils]: 1: Hoare triple {133#(= assume_cycle_if_not_~cond |assume_cycle_if_not_#in~cond|)} assume !(0 == ~cond); {134#(not (= 0 |assume_cycle_if_not_#in~cond|))} is VALID [2020-07-17 22:52:44,602 INFO L280 TraceCheckUtils]: 2: Hoare triple {134#(not (= 0 |assume_cycle_if_not_#in~cond|))} assume true; {134#(not (= 0 |assume_cycle_if_not_#in~cond|))} is VALID [2020-07-17 22:52:44,605 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {134#(not (= 0 |assume_cycle_if_not_#in~cond|))} {118#(= 0 task_~n~1)} #169#return; {102#false} is VALID [2020-07-17 22:52:44,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:52:44,639 INFO L280 TraceCheckUtils]: 0: Hoare triple {135#(= |#memory_int| |old(#memory_int)|)} #memory_int := ~initToZeroAtPointerBaseAddress~int(#memory_int, #ptr.base); {101#true} is VALID [2020-07-17 22:52:44,640 INFO L280 TraceCheckUtils]: 1: Hoare triple {101#true} assume true; {101#true} is VALID [2020-07-17 22:52:44,641 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {101#true} {102#false} #171#return; {102#false} is VALID [2020-07-17 22:52:44,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:52:44,709 INFO L280 TraceCheckUtils]: 0: Hoare triple {136#(and (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} ~t.base, ~t.offset := #in~t.base, #in~t.offset;~a.base, ~a.offset := #in~a.base, #in~a.offset;~i := #in~i; {101#true} is VALID [2020-07-17 22:52:44,710 INFO L280 TraceCheckUtils]: 1: Hoare triple {101#true} assume ~t.base == 0 && ~t.offset == 0;#res := ~i; {101#true} is VALID [2020-07-17 22:52:44,710 INFO L280 TraceCheckUtils]: 2: Hoare triple {101#true} assume true; {101#true} is VALID [2020-07-17 22:52:44,711 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {101#true} {102#false} #173#return; {102#false} is VALID [2020-07-17 22:52:44,713 INFO L263 TraceCheckUtils]: 0: Hoare triple {101#true} call ULTIMATE.init(); {130#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-17 22:52:44,714 INFO L280 TraceCheckUtils]: 1: Hoare triple {130#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {101#true} is VALID [2020-07-17 22:52:44,714 INFO L280 TraceCheckUtils]: 2: Hoare triple {101#true} assume true; {101#true} is VALID [2020-07-17 22:52:44,714 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {101#true} {101#true} #195#return; {101#true} is VALID [2020-07-17 22:52:44,715 INFO L263 TraceCheckUtils]: 4: Hoare triple {101#true} call #t~ret42 := main(); {101#true} is VALID [2020-07-17 22:52:44,717 INFO L263 TraceCheckUtils]: 5: Hoare triple {101#true} call #t~ret41.base, #t~ret41.offset := nondet_tree(); {131#(and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} is VALID [2020-07-17 22:52:44,718 INFO L280 TraceCheckUtils]: 6: Hoare triple {131#(and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} assume 0 != #t~nondet1 % 256;havoc #t~nondet1;#res.base, #res.offset := 0, 0; {101#true} is VALID [2020-07-17 22:52:44,719 INFO L280 TraceCheckUtils]: 7: Hoare triple {101#true} assume true; {101#true} is VALID [2020-07-17 22:52:44,720 INFO L275 TraceCheckUtils]: 8: Hoare quadruple {101#true} {101#true} #153#return; {101#true} is VALID [2020-07-17 22:52:44,720 INFO L263 TraceCheckUtils]: 9: Hoare triple {101#true} call task(#t~ret41.base, #t~ret41.offset); {101#true} is VALID [2020-07-17 22:52:44,721 INFO L280 TraceCheckUtils]: 10: Hoare triple {101#true} ~t.base, ~t.offset := #in~t.base, #in~t.offset; {101#true} is VALID [2020-07-17 22:52:44,721 INFO L263 TraceCheckUtils]: 11: Hoare triple {101#true} call #t~ret28 := min(~t.base, ~t.offset); {101#true} is VALID [2020-07-17 22:52:44,722 INFO L280 TraceCheckUtils]: 12: Hoare triple {101#true} ~n.base, ~n.offset := #in~n.base, #in~n.offset; {101#true} is VALID [2020-07-17 22:52:44,722 INFO L280 TraceCheckUtils]: 13: Hoare triple {101#true} assume ~n.base == 0 && ~n.offset == 0;#res := 2147483647; {101#true} is VALID [2020-07-17 22:52:44,722 INFO L280 TraceCheckUtils]: 14: Hoare triple {101#true} assume true; {101#true} is VALID [2020-07-17 22:52:44,723 INFO L275 TraceCheckUtils]: 15: Hoare quadruple {101#true} {101#true} #165#return; {101#true} is VALID [2020-07-17 22:52:44,723 INFO L280 TraceCheckUtils]: 16: Hoare triple {101#true} assume -2147483648 <= #t~ret28 && #t~ret28 <= 2147483647;~a~1 := #t~ret28;havoc #t~ret28;call ~#b~1.base, ~#b~1.offset := #Ultimate.allocOnStack(4); {101#true} is VALID [2020-07-17 22:52:44,724 INFO L263 TraceCheckUtils]: 17: Hoare triple {101#true} call #t~ret29 := size(~t.base, ~t.offset); {101#true} is VALID [2020-07-17 22:52:44,724 INFO L280 TraceCheckUtils]: 18: Hoare triple {101#true} ~t.base, ~t.offset := #in~t.base, #in~t.offset; {101#true} is VALID [2020-07-17 22:52:44,727 INFO L280 TraceCheckUtils]: 19: Hoare triple {101#true} assume ~t.base == 0 && ~t.offset == 0;#res := 0; {132#(= 0 |size_#res|)} is VALID [2020-07-17 22:52:44,729 INFO L280 TraceCheckUtils]: 20: Hoare triple {132#(= 0 |size_#res|)} assume true; {132#(= 0 |size_#res|)} is VALID [2020-07-17 22:52:44,734 INFO L275 TraceCheckUtils]: 21: Hoare quadruple {132#(= 0 |size_#res|)} {101#true} #167#return; {117#(= 0 |task_#t~ret29|)} is VALID [2020-07-17 22:52:44,737 INFO L280 TraceCheckUtils]: 22: Hoare triple {117#(= 0 |task_#t~ret29|)} assume -2147483648 <= #t~ret29 && #t~ret29 <= 2147483647;~n~1 := #t~ret29;havoc #t~ret29; {118#(= 0 task_~n~1)} is VALID [2020-07-17 22:52:44,738 INFO L263 TraceCheckUtils]: 23: Hoare triple {118#(= 0 task_~n~1)} call assume_cycle_if_not((if 0 != ~n~1 then 1 else 0)); {101#true} is VALID [2020-07-17 22:52:44,740 INFO L280 TraceCheckUtils]: 24: Hoare triple {101#true} ~cond := #in~cond; {133#(= assume_cycle_if_not_~cond |assume_cycle_if_not_#in~cond|)} is VALID [2020-07-17 22:52:44,742 INFO L280 TraceCheckUtils]: 25: Hoare triple {133#(= assume_cycle_if_not_~cond |assume_cycle_if_not_#in~cond|)} assume !(0 == ~cond); {134#(not (= 0 |assume_cycle_if_not_#in~cond|))} is VALID [2020-07-17 22:52:44,744 INFO L280 TraceCheckUtils]: 26: Hoare triple {134#(not (= 0 |assume_cycle_if_not_#in~cond|))} assume true; {134#(not (= 0 |assume_cycle_if_not_#in~cond|))} is VALID [2020-07-17 22:52:44,748 INFO L275 TraceCheckUtils]: 27: Hoare quadruple {134#(not (= 0 |assume_cycle_if_not_#in~cond|))} {118#(= 0 task_~n~1)} #169#return; {102#false} is VALID [2020-07-17 22:52:44,749 INFO L280 TraceCheckUtils]: 28: Hoare triple {102#false} call #t~malloc30.base, #t~malloc30.offset := #Ultimate.allocOnHeap(4 * ~n~1); {102#false} is VALID [2020-07-17 22:52:44,750 INFO L263 TraceCheckUtils]: 29: Hoare triple {102#false} call #Ultimate.meminit(#t~malloc30.base, #t~malloc30.offset, ~n~1, 4, 4 * ~n~1); {135#(= |#memory_int| |old(#memory_int)|)} is VALID [2020-07-17 22:52:44,751 INFO L280 TraceCheckUtils]: 30: Hoare triple {135#(= |#memory_int| |old(#memory_int)|)} #memory_int := ~initToZeroAtPointerBaseAddress~int(#memory_int, #ptr.base); {101#true} is VALID [2020-07-17 22:52:44,751 INFO L280 TraceCheckUtils]: 31: Hoare triple {101#true} assume true; {101#true} is VALID [2020-07-17 22:52:44,752 INFO L275 TraceCheckUtils]: 32: Hoare quadruple {101#true} {102#false} #171#return; {102#false} is VALID [2020-07-17 22:52:44,752 INFO L280 TraceCheckUtils]: 33: Hoare triple {102#false} ~x~0.base, ~x~0.offset := #t~malloc30.base, #t~malloc30.offset; {102#false} is VALID [2020-07-17 22:52:44,753 INFO L263 TraceCheckUtils]: 34: Hoare triple {102#false} call #t~ret31 := tree_inorder(~t.base, ~t.offset, ~x~0.base, ~x~0.offset, ~n~1); {136#(and (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} is VALID [2020-07-17 22:52:44,753 INFO L280 TraceCheckUtils]: 35: Hoare triple {136#(and (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} ~t.base, ~t.offset := #in~t.base, #in~t.offset;~a.base, ~a.offset := #in~a.base, #in~a.offset;~i := #in~i; {101#true} is VALID [2020-07-17 22:52:44,753 INFO L280 TraceCheckUtils]: 36: Hoare triple {101#true} assume ~t.base == 0 && ~t.offset == 0;#res := ~i; {101#true} is VALID [2020-07-17 22:52:44,754 INFO L280 TraceCheckUtils]: 37: Hoare triple {101#true} assume true; {101#true} is VALID [2020-07-17 22:52:44,754 INFO L275 TraceCheckUtils]: 38: Hoare quadruple {101#true} {102#false} #173#return; {102#false} is VALID [2020-07-17 22:52:44,755 INFO L280 TraceCheckUtils]: 39: Hoare triple {102#false} assume -2147483648 <= #t~ret31 && #t~ret31 <= 2147483647;havoc #t~ret31;call #t~mem32 := read~int(~x~0.base, ~x~0.offset, 4); {102#false} is VALID [2020-07-17 22:52:44,755 INFO L263 TraceCheckUtils]: 40: Hoare triple {102#false} call __VERIFIER_assert((if ~a~1 == #t~mem32 then 1 else 0)); {102#false} is VALID [2020-07-17 22:52:44,755 INFO L280 TraceCheckUtils]: 41: Hoare triple {102#false} ~cond := #in~cond; {102#false} is VALID [2020-07-17 22:52:44,756 INFO L280 TraceCheckUtils]: 42: Hoare triple {102#false} assume 0 == ~cond; {102#false} is VALID [2020-07-17 22:52:44,757 INFO L280 TraceCheckUtils]: 43: Hoare triple {102#false} assume !false; {102#false} is VALID [2020-07-17 22:52:44,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 22:52:44,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250997649] [2020-07-17 22:52:44,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 22:52:44,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-17 22:52:44,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71459609] [2020-07-17 22:52:44,783 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 44 [2020-07-17 22:52:44,787 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-17 22:52:44,791 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 11 states. [2020-07-17 22:52:44,920 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 44 edges. 44 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:52:44,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-17 22:52:44,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 22:52:44,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-17 22:52:44,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-07-17 22:52:44,940 INFO L87 Difference]: Start difference. First operand 98 states. Second operand 11 states. [2020-07-17 22:52:48,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:52:48,416 INFO L93 Difference]: Finished difference Result 174 states and 235 transitions. [2020-07-17 22:52:48,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-17 22:52:48,416 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 44 [2020-07-17 22:52:48,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 22:52:48,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-07-17 22:52:48,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 235 transitions. [2020-07-17 22:52:48,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-07-17 22:52:48,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 235 transitions. [2020-07-17 22:52:48,462 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 10 states and 235 transitions. [2020-07-17 22:52:48,869 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 235 edges. 235 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:52:48,896 INFO L225 Difference]: With dead ends: 174 [2020-07-17 22:52:48,897 INFO L226 Difference]: Without dead ends: 98 [2020-07-17 22:52:48,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-07-17 22:52:48,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-07-17 22:52:49,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 91. [2020-07-17 22:52:49,027 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-17 22:52:49,028 INFO L82 GeneralOperation]: Start isEquivalent. First operand 98 states. Second operand 91 states. [2020-07-17 22:52:49,029 INFO L74 IsIncluded]: Start isIncluded. First operand 98 states. Second operand 91 states. [2020-07-17 22:52:49,029 INFO L87 Difference]: Start difference. First operand 98 states. Second operand 91 states. [2020-07-17 22:52:49,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:52:49,044 INFO L93 Difference]: Finished difference Result 98 states and 127 transitions. [2020-07-17 22:52:49,044 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 127 transitions. [2020-07-17 22:52:49,048 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:52:49,048 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:52:49,048 INFO L74 IsIncluded]: Start isIncluded. First operand 91 states. Second operand 98 states. [2020-07-17 22:52:49,048 INFO L87 Difference]: Start difference. First operand 91 states. Second operand 98 states. [2020-07-17 22:52:49,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:52:49,060 INFO L93 Difference]: Finished difference Result 98 states and 127 transitions. [2020-07-17 22:52:49,061 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 127 transitions. [2020-07-17 22:52:49,064 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:52:49,064 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:52:49,065 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-17 22:52:49,065 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-17 22:52:49,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-07-17 22:52:49,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 115 transitions. [2020-07-17 22:52:49,075 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 115 transitions. Word has length 44 [2020-07-17 22:52:49,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 22:52:49,075 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 115 transitions. [2020-07-17 22:52:49,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-17 22:52:49,076 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 115 transitions. [2020-07-17 22:52:49,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-07-17 22:52:49,079 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:52:49,079 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] [2020-07-17 22:52:49,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 22:52:49,080 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:52:49,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:52:49,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1561052270, now seen corresponding path program 1 times [2020-07-17 22:52:49,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:52:49,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497536149] [2020-07-17 22:52:49,082 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:52:49,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:52:49,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:52:49,282 INFO L280 TraceCheckUtils]: 0: Hoare triple {753#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {711#true} is VALID [2020-07-17 22:52:49,282 INFO L280 TraceCheckUtils]: 1: Hoare triple {711#true} assume true; {711#true} is VALID [2020-07-17 22:52:49,282 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {711#true} {711#true} #195#return; {711#true} is VALID [2020-07-17 22:52:49,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:52:49,367 INFO L280 TraceCheckUtils]: 0: Hoare triple {754#(and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} assume 0 != #t~nondet1 % 256;havoc #t~nondet1;#res.base, #res.offset := 0, 0; {755#(and (<= |nondet_tree_#res.base| 0) (<= 0 |nondet_tree_#res.offset|) (<= |nondet_tree_#res.offset| 0) (<= 0 |nondet_tree_#res.base|))} is VALID [2020-07-17 22:52:49,368 INFO L280 TraceCheckUtils]: 1: Hoare triple {755#(and (<= |nondet_tree_#res.base| 0) (<= 0 |nondet_tree_#res.offset|) (<= |nondet_tree_#res.offset| 0) (<= 0 |nondet_tree_#res.base|))} assume true; {755#(and (<= |nondet_tree_#res.base| 0) (<= 0 |nondet_tree_#res.offset|) (<= |nondet_tree_#res.offset| 0) (<= 0 |nondet_tree_#res.base|))} is VALID [2020-07-17 22:52:49,369 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {755#(and (<= |nondet_tree_#res.base| 0) (<= 0 |nondet_tree_#res.offset|) (<= |nondet_tree_#res.offset| 0) (<= 0 |nondet_tree_#res.base|))} {711#true} #153#return; {719#(and (= 0 |main_#t~ret41.base|) (= 0 |main_#t~ret41.offset|))} is VALID [2020-07-17 22:52:49,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:52:49,383 INFO L280 TraceCheckUtils]: 0: Hoare triple {711#true} ~n.base, ~n.offset := #in~n.base, #in~n.offset; {711#true} is VALID [2020-07-17 22:52:49,384 INFO L280 TraceCheckUtils]: 1: Hoare triple {711#true} assume ~n.base == 0 && ~n.offset == 0;#res := 2147483647; {711#true} is VALID [2020-07-17 22:52:49,384 INFO L280 TraceCheckUtils]: 2: Hoare triple {711#true} assume true; {711#true} is VALID [2020-07-17 22:52:49,386 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {711#true} {721#(and (= 0 task_~t.offset) (= 0 task_~t.base))} #165#return; {721#(and (= 0 task_~t.offset) (= 0 task_~t.base))} is VALID [2020-07-17 22:52:49,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:52:49,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:52:49,476 INFO L280 TraceCheckUtils]: 0: Hoare triple {711#true} ~t.base, ~t.offset := #in~t.base, #in~t.offset; {711#true} is VALID [2020-07-17 22:52:49,476 INFO L280 TraceCheckUtils]: 1: Hoare triple {711#true} assume ~t.base == 0 && ~t.offset == 0;#res := 0; {711#true} is VALID [2020-07-17 22:52:49,477 INFO L280 TraceCheckUtils]: 2: Hoare triple {711#true} assume true; {711#true} is VALID [2020-07-17 22:52:49,478 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {711#true} {757#(or (not (= |size_#in~t.offset| 0)) (not (= 0 |size_#in~t.base|)))} #191#return; {757#(or (not (= |size_#in~t.offset| 0)) (not (= 0 |size_#in~t.base|)))} is VALID [2020-07-17 22:52:49,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:52:49,484 INFO L280 TraceCheckUtils]: 0: Hoare triple {711#true} ~t.base, ~t.offset := #in~t.base, #in~t.offset; {711#true} is VALID [2020-07-17 22:52:49,484 INFO L280 TraceCheckUtils]: 1: Hoare triple {711#true} assume ~t.base == 0 && ~t.offset == 0;#res := 0; {711#true} is VALID [2020-07-17 22:52:49,485 INFO L280 TraceCheckUtils]: 2: Hoare triple {711#true} assume true; {711#true} is VALID [2020-07-17 22:52:49,487 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {711#true} {757#(or (not (= |size_#in~t.offset| 0)) (not (= 0 |size_#in~t.base|)))} #193#return; {757#(or (not (= |size_#in~t.offset| 0)) (not (= 0 |size_#in~t.base|)))} is VALID [2020-07-17 22:52:49,490 INFO L280 TraceCheckUtils]: 0: Hoare triple {711#true} ~t.base, ~t.offset := #in~t.base, #in~t.offset; {756#(and (= |size_#in~t.base| size_~t.base) (= |size_#in~t.offset| size_~t.offset))} is VALID [2020-07-17 22:52:49,493 INFO L280 TraceCheckUtils]: 1: Hoare triple {756#(and (= |size_#in~t.base| size_~t.base) (= |size_#in~t.offset| size_~t.offset))} assume !(~t.base == 0 && ~t.offset == 0);call #t~mem24.base, #t~mem24.offset := read~$Pointer$(~t.base, 4 + ~t.offset, 4); {757#(or (not (= |size_#in~t.offset| 0)) (not (= 0 |size_#in~t.base|)))} is VALID [2020-07-17 22:52:49,494 INFO L263 TraceCheckUtils]: 2: Hoare triple {757#(or (not (= |size_#in~t.offset| 0)) (not (= 0 |size_#in~t.base|)))} call #t~ret25 := size(#t~mem24.base, #t~mem24.offset); {711#true} is VALID [2020-07-17 22:52:49,494 INFO L280 TraceCheckUtils]: 3: Hoare triple {711#true} ~t.base, ~t.offset := #in~t.base, #in~t.offset; {711#true} is VALID [2020-07-17 22:52:49,494 INFO L280 TraceCheckUtils]: 4: Hoare triple {711#true} assume ~t.base == 0 && ~t.offset == 0;#res := 0; {711#true} is VALID [2020-07-17 22:52:49,495 INFO L280 TraceCheckUtils]: 5: Hoare triple {711#true} assume true; {711#true} is VALID [2020-07-17 22:52:49,496 INFO L275 TraceCheckUtils]: 6: Hoare quadruple {711#true} {757#(or (not (= |size_#in~t.offset| 0)) (not (= 0 |size_#in~t.base|)))} #191#return; {757#(or (not (= |size_#in~t.offset| 0)) (not (= 0 |size_#in~t.base|)))} is VALID [2020-07-17 22:52:49,496 INFO L280 TraceCheckUtils]: 7: Hoare triple {757#(or (not (= |size_#in~t.offset| 0)) (not (= 0 |size_#in~t.base|)))} assume -2147483648 <= #t~ret25 && #t~ret25 <= 2147483647;call #t~mem26.base, #t~mem26.offset := read~$Pointer$(~t.base, 8 + ~t.offset, 4); {757#(or (not (= |size_#in~t.offset| 0)) (not (= 0 |size_#in~t.base|)))} is VALID [2020-07-17 22:52:49,497 INFO L263 TraceCheckUtils]: 8: Hoare triple {757#(or (not (= |size_#in~t.offset| 0)) (not (= 0 |size_#in~t.base|)))} call #t~ret27 := size(#t~mem26.base, #t~mem26.offset); {711#true} is VALID [2020-07-17 22:52:49,497 INFO L280 TraceCheckUtils]: 9: Hoare triple {711#true} ~t.base, ~t.offset := #in~t.base, #in~t.offset; {711#true} is VALID [2020-07-17 22:52:49,497 INFO L280 TraceCheckUtils]: 10: Hoare triple {711#true} assume ~t.base == 0 && ~t.offset == 0;#res := 0; {711#true} is VALID [2020-07-17 22:52:49,498 INFO L280 TraceCheckUtils]: 11: Hoare triple {711#true} assume true; {711#true} is VALID [2020-07-17 22:52:49,498 INFO L275 TraceCheckUtils]: 12: Hoare quadruple {711#true} {757#(or (not (= |size_#in~t.offset| 0)) (not (= 0 |size_#in~t.base|)))} #193#return; {757#(or (not (= |size_#in~t.offset| 0)) (not (= 0 |size_#in~t.base|)))} is VALID [2020-07-17 22:52:49,499 INFO L280 TraceCheckUtils]: 13: Hoare triple {757#(or (not (= |size_#in~t.offset| 0)) (not (= 0 |size_#in~t.base|)))} assume -2147483648 <= #t~ret27 && #t~ret27 <= 2147483647;#res := 1 + (#t~ret25 + #t~ret27);havoc #t~ret25;havoc #t~ret27;havoc #t~mem24.base, #t~mem24.offset;havoc #t~mem26.base, #t~mem26.offset; {757#(or (not (= |size_#in~t.offset| 0)) (not (= 0 |size_#in~t.base|)))} is VALID [2020-07-17 22:52:49,503 INFO L280 TraceCheckUtils]: 14: Hoare triple {757#(or (not (= |size_#in~t.offset| 0)) (not (= 0 |size_#in~t.base|)))} assume true; {757#(or (not (= |size_#in~t.offset| 0)) (not (= 0 |size_#in~t.base|)))} is VALID [2020-07-17 22:52:49,504 INFO L275 TraceCheckUtils]: 15: Hoare quadruple {757#(or (not (= |size_#in~t.offset| 0)) (not (= 0 |size_#in~t.base|)))} {721#(and (= 0 task_~t.offset) (= 0 task_~t.base))} #167#return; {712#false} is VALID [2020-07-17 22:52:49,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:52:49,510 INFO L280 TraceCheckUtils]: 0: Hoare triple {711#true} ~cond := #in~cond; {711#true} is VALID [2020-07-17 22:52:49,511 INFO L280 TraceCheckUtils]: 1: Hoare triple {711#true} assume !(0 == ~cond); {711#true} is VALID [2020-07-17 22:52:49,511 INFO L280 TraceCheckUtils]: 2: Hoare triple {711#true} assume true; {711#true} is VALID [2020-07-17 22:52:49,511 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {711#true} {712#false} #169#return; {712#false} is VALID [2020-07-17 22:52:49,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:52:49,536 INFO L280 TraceCheckUtils]: 0: Hoare triple {766#(= |#memory_int| |old(#memory_int)|)} #memory_int := ~initToZeroAtPointerBaseAddress~int(#memory_int, #ptr.base); {711#true} is VALID [2020-07-17 22:52:49,536 INFO L280 TraceCheckUtils]: 1: Hoare triple {711#true} assume true; {711#true} is VALID [2020-07-17 22:52:49,537 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {711#true} {712#false} #171#return; {712#false} is VALID [2020-07-17 22:52:49,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:52:49,567 INFO L280 TraceCheckUtils]: 0: Hoare triple {767#(and (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} ~t.base, ~t.offset := #in~t.base, #in~t.offset;~a.base, ~a.offset := #in~a.base, #in~a.offset;~i := #in~i; {711#true} is VALID [2020-07-17 22:52:49,567 INFO L280 TraceCheckUtils]: 1: Hoare triple {711#true} assume ~t.base == 0 && ~t.offset == 0;#res := ~i; {711#true} is VALID [2020-07-17 22:52:49,568 INFO L280 TraceCheckUtils]: 2: Hoare triple {711#true} assume true; {711#true} is VALID [2020-07-17 22:52:49,569 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {711#true} {712#false} #173#return; {712#false} is VALID [2020-07-17 22:52:49,572 INFO L263 TraceCheckUtils]: 0: Hoare triple {711#true} call ULTIMATE.init(); {753#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-17 22:52:49,572 INFO L280 TraceCheckUtils]: 1: Hoare triple {753#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {711#true} is VALID [2020-07-17 22:52:49,573 INFO L280 TraceCheckUtils]: 2: Hoare triple {711#true} assume true; {711#true} is VALID [2020-07-17 22:52:49,573 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {711#true} {711#true} #195#return; {711#true} is VALID [2020-07-17 22:52:49,573 INFO L263 TraceCheckUtils]: 4: Hoare triple {711#true} call #t~ret42 := main(); {711#true} is VALID [2020-07-17 22:52:49,578 INFO L263 TraceCheckUtils]: 5: Hoare triple {711#true} call #t~ret41.base, #t~ret41.offset := nondet_tree(); {754#(and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} is VALID [2020-07-17 22:52:49,581 INFO L280 TraceCheckUtils]: 6: Hoare triple {754#(and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} assume 0 != #t~nondet1 % 256;havoc #t~nondet1;#res.base, #res.offset := 0, 0; {755#(and (<= |nondet_tree_#res.base| 0) (<= 0 |nondet_tree_#res.offset|) (<= |nondet_tree_#res.offset| 0) (<= 0 |nondet_tree_#res.base|))} is VALID [2020-07-17 22:52:49,582 INFO L280 TraceCheckUtils]: 7: Hoare triple {755#(and (<= |nondet_tree_#res.base| 0) (<= 0 |nondet_tree_#res.offset|) (<= |nondet_tree_#res.offset| 0) (<= 0 |nondet_tree_#res.base|))} assume true; {755#(and (<= |nondet_tree_#res.base| 0) (<= 0 |nondet_tree_#res.offset|) (<= |nondet_tree_#res.offset| 0) (<= 0 |nondet_tree_#res.base|))} is VALID [2020-07-17 22:52:49,583 INFO L275 TraceCheckUtils]: 8: Hoare quadruple {755#(and (<= |nondet_tree_#res.base| 0) (<= 0 |nondet_tree_#res.offset|) (<= |nondet_tree_#res.offset| 0) (<= 0 |nondet_tree_#res.base|))} {711#true} #153#return; {719#(and (= 0 |main_#t~ret41.base|) (= 0 |main_#t~ret41.offset|))} is VALID [2020-07-17 22:52:49,584 INFO L263 TraceCheckUtils]: 9: Hoare triple {719#(and (= 0 |main_#t~ret41.base|) (= 0 |main_#t~ret41.offset|))} call task(#t~ret41.base, #t~ret41.offset); {720#(and (= 0 |task_#in~t.offset|) (= |task_#in~t.base| 0))} is VALID [2020-07-17 22:52:49,585 INFO L280 TraceCheckUtils]: 10: Hoare triple {720#(and (= 0 |task_#in~t.offset|) (= |task_#in~t.base| 0))} ~t.base, ~t.offset := #in~t.base, #in~t.offset; {721#(and (= 0 task_~t.offset) (= 0 task_~t.base))} is VALID [2020-07-17 22:52:49,585 INFO L263 TraceCheckUtils]: 11: Hoare triple {721#(and (= 0 task_~t.offset) (= 0 task_~t.base))} call #t~ret28 := min(~t.base, ~t.offset); {711#true} is VALID [2020-07-17 22:52:49,585 INFO L280 TraceCheckUtils]: 12: Hoare triple {711#true} ~n.base, ~n.offset := #in~n.base, #in~n.offset; {711#true} is VALID [2020-07-17 22:52:49,586 INFO L280 TraceCheckUtils]: 13: Hoare triple {711#true} assume ~n.base == 0 && ~n.offset == 0;#res := 2147483647; {711#true} is VALID [2020-07-17 22:52:49,586 INFO L280 TraceCheckUtils]: 14: Hoare triple {711#true} assume true; {711#true} is VALID [2020-07-17 22:52:49,588 INFO L275 TraceCheckUtils]: 15: Hoare quadruple {711#true} {721#(and (= 0 task_~t.offset) (= 0 task_~t.base))} #165#return; {721#(and (= 0 task_~t.offset) (= 0 task_~t.base))} is VALID [2020-07-17 22:52:49,589 INFO L280 TraceCheckUtils]: 16: Hoare triple {721#(and (= 0 task_~t.offset) (= 0 task_~t.base))} assume -2147483648 <= #t~ret28 && #t~ret28 <= 2147483647;~a~1 := #t~ret28;havoc #t~ret28;call ~#b~1.base, ~#b~1.offset := #Ultimate.allocOnStack(4); {721#(and (= 0 task_~t.offset) (= 0 task_~t.base))} is VALID [2020-07-17 22:52:49,590 INFO L263 TraceCheckUtils]: 17: Hoare triple {721#(and (= 0 task_~t.offset) (= 0 task_~t.base))} call #t~ret29 := size(~t.base, ~t.offset); {711#true} is VALID [2020-07-17 22:52:49,592 INFO L280 TraceCheckUtils]: 18: Hoare triple {711#true} ~t.base, ~t.offset := #in~t.base, #in~t.offset; {756#(and (= |size_#in~t.base| size_~t.base) (= |size_#in~t.offset| size_~t.offset))} is VALID [2020-07-17 22:52:49,596 INFO L280 TraceCheckUtils]: 19: Hoare triple {756#(and (= |size_#in~t.base| size_~t.base) (= |size_#in~t.offset| size_~t.offset))} assume !(~t.base == 0 && ~t.offset == 0);call #t~mem24.base, #t~mem24.offset := read~$Pointer$(~t.base, 4 + ~t.offset, 4); {757#(or (not (= |size_#in~t.offset| 0)) (not (= 0 |size_#in~t.base|)))} is VALID [2020-07-17 22:52:49,597 INFO L263 TraceCheckUtils]: 20: Hoare triple {757#(or (not (= |size_#in~t.offset| 0)) (not (= 0 |size_#in~t.base|)))} call #t~ret25 := size(#t~mem24.base, #t~mem24.offset); {711#true} is VALID [2020-07-17 22:52:49,597 INFO L280 TraceCheckUtils]: 21: Hoare triple {711#true} ~t.base, ~t.offset := #in~t.base, #in~t.offset; {711#true} is VALID [2020-07-17 22:52:49,598 INFO L280 TraceCheckUtils]: 22: Hoare triple {711#true} assume ~t.base == 0 && ~t.offset == 0;#res := 0; {711#true} is VALID [2020-07-17 22:52:49,598 INFO L280 TraceCheckUtils]: 23: Hoare triple {711#true} assume true; {711#true} is VALID [2020-07-17 22:52:49,599 INFO L275 TraceCheckUtils]: 24: Hoare quadruple {711#true} {757#(or (not (= |size_#in~t.offset| 0)) (not (= 0 |size_#in~t.base|)))} #191#return; {757#(or (not (= |size_#in~t.offset| 0)) (not (= 0 |size_#in~t.base|)))} is VALID [2020-07-17 22:52:49,601 INFO L280 TraceCheckUtils]: 25: Hoare triple {757#(or (not (= |size_#in~t.offset| 0)) (not (= 0 |size_#in~t.base|)))} assume -2147483648 <= #t~ret25 && #t~ret25 <= 2147483647;call #t~mem26.base, #t~mem26.offset := read~$Pointer$(~t.base, 8 + ~t.offset, 4); {757#(or (not (= |size_#in~t.offset| 0)) (not (= 0 |size_#in~t.base|)))} is VALID [2020-07-17 22:52:49,601 INFO L263 TraceCheckUtils]: 26: Hoare triple {757#(or (not (= |size_#in~t.offset| 0)) (not (= 0 |size_#in~t.base|)))} call #t~ret27 := size(#t~mem26.base, #t~mem26.offset); {711#true} is VALID [2020-07-17 22:52:49,601 INFO L280 TraceCheckUtils]: 27: Hoare triple {711#true} ~t.base, ~t.offset := #in~t.base, #in~t.offset; {711#true} is VALID [2020-07-17 22:52:49,601 INFO L280 TraceCheckUtils]: 28: Hoare triple {711#true} assume ~t.base == 0 && ~t.offset == 0;#res := 0; {711#true} is VALID [2020-07-17 22:52:49,602 INFO L280 TraceCheckUtils]: 29: Hoare triple {711#true} assume true; {711#true} is VALID [2020-07-17 22:52:49,604 INFO L275 TraceCheckUtils]: 30: Hoare quadruple {711#true} {757#(or (not (= |size_#in~t.offset| 0)) (not (= 0 |size_#in~t.base|)))} #193#return; {757#(or (not (= |size_#in~t.offset| 0)) (not (= 0 |size_#in~t.base|)))} is VALID [2020-07-17 22:52:49,604 INFO L280 TraceCheckUtils]: 31: Hoare triple {757#(or (not (= |size_#in~t.offset| 0)) (not (= 0 |size_#in~t.base|)))} assume -2147483648 <= #t~ret27 && #t~ret27 <= 2147483647;#res := 1 + (#t~ret25 + #t~ret27);havoc #t~ret25;havoc #t~ret27;havoc #t~mem24.base, #t~mem24.offset;havoc #t~mem26.base, #t~mem26.offset; {757#(or (not (= |size_#in~t.offset| 0)) (not (= 0 |size_#in~t.base|)))} is VALID [2020-07-17 22:52:49,605 INFO L280 TraceCheckUtils]: 32: Hoare triple {757#(or (not (= |size_#in~t.offset| 0)) (not (= 0 |size_#in~t.base|)))} assume true; {757#(or (not (= |size_#in~t.offset| 0)) (not (= 0 |size_#in~t.base|)))} is VALID [2020-07-17 22:52:49,606 INFO L275 TraceCheckUtils]: 33: Hoare quadruple {757#(or (not (= |size_#in~t.offset| 0)) (not (= 0 |size_#in~t.base|)))} {721#(and (= 0 task_~t.offset) (= 0 task_~t.base))} #167#return; {712#false} is VALID [2020-07-17 22:52:49,606 INFO L280 TraceCheckUtils]: 34: Hoare triple {712#false} assume -2147483648 <= #t~ret29 && #t~ret29 <= 2147483647;~n~1 := #t~ret29;havoc #t~ret29; {712#false} is VALID [2020-07-17 22:52:49,606 INFO L263 TraceCheckUtils]: 35: Hoare triple {712#false} call assume_cycle_if_not((if 0 != ~n~1 then 1 else 0)); {711#true} is VALID [2020-07-17 22:52:49,606 INFO L280 TraceCheckUtils]: 36: Hoare triple {711#true} ~cond := #in~cond; {711#true} is VALID [2020-07-17 22:52:49,606 INFO L280 TraceCheckUtils]: 37: Hoare triple {711#true} assume !(0 == ~cond); {711#true} is VALID [2020-07-17 22:52:49,607 INFO L280 TraceCheckUtils]: 38: Hoare triple {711#true} assume true; {711#true} is VALID [2020-07-17 22:52:49,607 INFO L275 TraceCheckUtils]: 39: Hoare quadruple {711#true} {712#false} #169#return; {712#false} is VALID [2020-07-17 22:52:49,607 INFO L280 TraceCheckUtils]: 40: Hoare triple {712#false} call #t~malloc30.base, #t~malloc30.offset := #Ultimate.allocOnHeap(4 * ~n~1); {712#false} is VALID [2020-07-17 22:52:49,607 INFO L263 TraceCheckUtils]: 41: Hoare triple {712#false} call #Ultimate.meminit(#t~malloc30.base, #t~malloc30.offset, ~n~1, 4, 4 * ~n~1); {766#(= |#memory_int| |old(#memory_int)|)} is VALID [2020-07-17 22:52:49,607 INFO L280 TraceCheckUtils]: 42: Hoare triple {766#(= |#memory_int| |old(#memory_int)|)} #memory_int := ~initToZeroAtPointerBaseAddress~int(#memory_int, #ptr.base); {711#true} is VALID [2020-07-17 22:52:49,607 INFO L280 TraceCheckUtils]: 43: Hoare triple {711#true} assume true; {711#true} is VALID [2020-07-17 22:52:49,608 INFO L275 TraceCheckUtils]: 44: Hoare quadruple {711#true} {712#false} #171#return; {712#false} is VALID [2020-07-17 22:52:49,608 INFO L280 TraceCheckUtils]: 45: Hoare triple {712#false} ~x~0.base, ~x~0.offset := #t~malloc30.base, #t~malloc30.offset; {712#false} is VALID [2020-07-17 22:52:49,608 INFO L263 TraceCheckUtils]: 46: Hoare triple {712#false} call #t~ret31 := tree_inorder(~t.base, ~t.offset, ~x~0.base, ~x~0.offset, ~n~1); {767#(and (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} is VALID [2020-07-17 22:52:49,608 INFO L280 TraceCheckUtils]: 47: Hoare triple {767#(and (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} ~t.base, ~t.offset := #in~t.base, #in~t.offset;~a.base, ~a.offset := #in~a.base, #in~a.offset;~i := #in~i; {711#true} is VALID [2020-07-17 22:52:49,608 INFO L280 TraceCheckUtils]: 48: Hoare triple {711#true} assume ~t.base == 0 && ~t.offset == 0;#res := ~i; {711#true} is VALID [2020-07-17 22:52:49,609 INFO L280 TraceCheckUtils]: 49: Hoare triple {711#true} assume true; {711#true} is VALID [2020-07-17 22:52:49,609 INFO L275 TraceCheckUtils]: 50: Hoare quadruple {711#true} {712#false} #173#return; {712#false} is VALID [2020-07-17 22:52:49,609 INFO L280 TraceCheckUtils]: 51: Hoare triple {712#false} assume -2147483648 <= #t~ret31 && #t~ret31 <= 2147483647;havoc #t~ret31;call #t~mem32 := read~int(~x~0.base, ~x~0.offset, 4); {712#false} is VALID [2020-07-17 22:52:49,609 INFO L263 TraceCheckUtils]: 52: Hoare triple {712#false} call __VERIFIER_assert((if ~a~1 == #t~mem32 then 1 else 0)); {712#false} is VALID [2020-07-17 22:52:49,609 INFO L280 TraceCheckUtils]: 53: Hoare triple {712#false} ~cond := #in~cond; {712#false} is VALID [2020-07-17 22:52:49,610 INFO L280 TraceCheckUtils]: 54: Hoare triple {712#false} assume 0 == ~cond; {712#false} is VALID [2020-07-17 22:52:49,610 INFO L280 TraceCheckUtils]: 55: Hoare triple {712#false} assume !false; {712#false} is VALID [2020-07-17 22:52:49,616 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-17 22:52:49,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497536149] [2020-07-17 22:52:49,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482757174] [2020-07-17 22:52:49,617 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 22:52:49,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:52:49,704 INFO L264 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 25 conjunts are in the unsatisfiable core [2020-07-17 22:52:49,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:52:49,744 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 22:52:49,924 INFO L263 TraceCheckUtils]: 0: Hoare triple {711#true} call ULTIMATE.init(); {711#true} is VALID [2020-07-17 22:52:49,924 INFO L280 TraceCheckUtils]: 1: Hoare triple {711#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {711#true} is VALID [2020-07-17 22:52:49,926 INFO L280 TraceCheckUtils]: 2: Hoare triple {711#true} assume true; {711#true} is VALID [2020-07-17 22:52:49,926 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {711#true} {711#true} #195#return; {711#true} is VALID [2020-07-17 22:52:49,927 INFO L263 TraceCheckUtils]: 4: Hoare triple {711#true} call #t~ret42 := main(); {711#true} is VALID [2020-07-17 22:52:49,927 INFO L263 TraceCheckUtils]: 5: Hoare triple {711#true} call #t~ret41.base, #t~ret41.offset := nondet_tree(); {711#true} is VALID [2020-07-17 22:52:49,929 INFO L280 TraceCheckUtils]: 6: Hoare triple {711#true} assume 0 != #t~nondet1 % 256;havoc #t~nondet1;#res.base, #res.offset := 0, 0; {755#(and (<= |nondet_tree_#res.base| 0) (<= 0 |nondet_tree_#res.offset|) (<= |nondet_tree_#res.offset| 0) (<= 0 |nondet_tree_#res.base|))} is VALID [2020-07-17 22:52:49,932 INFO L280 TraceCheckUtils]: 7: Hoare triple {755#(and (<= |nondet_tree_#res.base| 0) (<= 0 |nondet_tree_#res.offset|) (<= |nondet_tree_#res.offset| 0) (<= 0 |nondet_tree_#res.base|))} assume true; {755#(and (<= |nondet_tree_#res.base| 0) (<= 0 |nondet_tree_#res.offset|) (<= |nondet_tree_#res.offset| 0) (<= 0 |nondet_tree_#res.base|))} is VALID [2020-07-17 22:52:49,934 INFO L275 TraceCheckUtils]: 8: Hoare quadruple {755#(and (<= |nondet_tree_#res.base| 0) (<= 0 |nondet_tree_#res.offset|) (<= |nondet_tree_#res.offset| 0) (<= 0 |nondet_tree_#res.base|))} {711#true} #153#return; {719#(and (= 0 |main_#t~ret41.base|) (= 0 |main_#t~ret41.offset|))} is VALID [2020-07-17 22:52:49,936 INFO L263 TraceCheckUtils]: 9: Hoare triple {719#(and (= 0 |main_#t~ret41.base|) (= 0 |main_#t~ret41.offset|))} call task(#t~ret41.base, #t~ret41.offset); {720#(and (= 0 |task_#in~t.offset|) (= |task_#in~t.base| 0))} is VALID [2020-07-17 22:52:49,937 INFO L280 TraceCheckUtils]: 10: Hoare triple {720#(and (= 0 |task_#in~t.offset|) (= |task_#in~t.base| 0))} ~t.base, ~t.offset := #in~t.base, #in~t.offset; {721#(and (= 0 task_~t.offset) (= 0 task_~t.base))} is VALID [2020-07-17 22:52:49,937 INFO L263 TraceCheckUtils]: 11: Hoare triple {721#(and (= 0 task_~t.offset) (= 0 task_~t.base))} call #t~ret28 := min(~t.base, ~t.offset); {711#true} is VALID [2020-07-17 22:52:49,937 INFO L280 TraceCheckUtils]: 12: Hoare triple {711#true} ~n.base, ~n.offset := #in~n.base, #in~n.offset; {711#true} is VALID [2020-07-17 22:52:49,938 INFO L280 TraceCheckUtils]: 13: Hoare triple {711#true} assume ~n.base == 0 && ~n.offset == 0;#res := 2147483647; {711#true} is VALID [2020-07-17 22:52:49,938 INFO L280 TraceCheckUtils]: 14: Hoare triple {711#true} assume true; {711#true} is VALID [2020-07-17 22:52:49,939 INFO L275 TraceCheckUtils]: 15: Hoare quadruple {711#true} {721#(and (= 0 task_~t.offset) (= 0 task_~t.base))} #165#return; {721#(and (= 0 task_~t.offset) (= 0 task_~t.base))} is VALID [2020-07-17 22:52:49,941 INFO L280 TraceCheckUtils]: 16: Hoare triple {721#(and (= 0 task_~t.offset) (= 0 task_~t.base))} assume -2147483648 <= #t~ret28 && #t~ret28 <= 2147483647;~a~1 := #t~ret28;havoc #t~ret28;call ~#b~1.base, ~#b~1.offset := #Ultimate.allocOnStack(4); {721#(and (= 0 task_~t.offset) (= 0 task_~t.base))} is VALID [2020-07-17 22:52:49,941 INFO L263 TraceCheckUtils]: 17: Hoare triple {721#(and (= 0 task_~t.offset) (= 0 task_~t.base))} call #t~ret29 := size(~t.base, ~t.offset); {711#true} is VALID [2020-07-17 22:52:49,942 INFO L280 TraceCheckUtils]: 18: Hoare triple {711#true} ~t.base, ~t.offset := #in~t.base, #in~t.offset; {756#(and (= |size_#in~t.base| size_~t.base) (= |size_#in~t.offset| size_~t.offset))} is VALID [2020-07-17 22:52:49,943 INFO L280 TraceCheckUtils]: 19: Hoare triple {756#(and (= |size_#in~t.base| size_~t.base) (= |size_#in~t.offset| size_~t.offset))} assume !(~t.base == 0 && ~t.offset == 0);call #t~mem24.base, #t~mem24.offset := read~$Pointer$(~t.base, 4 + ~t.offset, 4); {757#(or (not (= |size_#in~t.offset| 0)) (not (= 0 |size_#in~t.base|)))} is VALID [2020-07-17 22:52:49,943 INFO L263 TraceCheckUtils]: 20: Hoare triple {757#(or (not (= |size_#in~t.offset| 0)) (not (= 0 |size_#in~t.base|)))} call #t~ret25 := size(#t~mem24.base, #t~mem24.offset); {711#true} is VALID [2020-07-17 22:52:49,944 INFO L280 TraceCheckUtils]: 21: Hoare triple {711#true} ~t.base, ~t.offset := #in~t.base, #in~t.offset; {711#true} is VALID [2020-07-17 22:52:49,944 INFO L280 TraceCheckUtils]: 22: Hoare triple {711#true} assume ~t.base == 0 && ~t.offset == 0;#res := 0; {711#true} is VALID [2020-07-17 22:52:49,944 INFO L280 TraceCheckUtils]: 23: Hoare triple {711#true} assume true; {711#true} is VALID [2020-07-17 22:52:49,951 INFO L275 TraceCheckUtils]: 24: Hoare quadruple {711#true} {757#(or (not (= |size_#in~t.offset| 0)) (not (= 0 |size_#in~t.base|)))} #191#return; {757#(or (not (= |size_#in~t.offset| 0)) (not (= 0 |size_#in~t.base|)))} is VALID [2020-07-17 22:52:49,952 INFO L280 TraceCheckUtils]: 25: Hoare triple {757#(or (not (= |size_#in~t.offset| 0)) (not (= 0 |size_#in~t.base|)))} assume -2147483648 <= #t~ret25 && #t~ret25 <= 2147483647;call #t~mem26.base, #t~mem26.offset := read~$Pointer$(~t.base, 8 + ~t.offset, 4); {757#(or (not (= |size_#in~t.offset| 0)) (not (= 0 |size_#in~t.base|)))} is VALID [2020-07-17 22:52:49,953 INFO L263 TraceCheckUtils]: 26: Hoare triple {757#(or (not (= |size_#in~t.offset| 0)) (not (= 0 |size_#in~t.base|)))} call #t~ret27 := size(#t~mem26.base, #t~mem26.offset); {711#true} is VALID [2020-07-17 22:52:49,953 INFO L280 TraceCheckUtils]: 27: Hoare triple {711#true} ~t.base, ~t.offset := #in~t.base, #in~t.offset; {711#true} is VALID [2020-07-17 22:52:49,953 INFO L280 TraceCheckUtils]: 28: Hoare triple {711#true} assume ~t.base == 0 && ~t.offset == 0;#res := 0; {711#true} is VALID [2020-07-17 22:52:49,953 INFO L280 TraceCheckUtils]: 29: Hoare triple {711#true} assume true; {711#true} is VALID [2020-07-17 22:52:49,954 INFO L275 TraceCheckUtils]: 30: Hoare quadruple {711#true} {757#(or (not (= |size_#in~t.offset| 0)) (not (= 0 |size_#in~t.base|)))} #193#return; {757#(or (not (= |size_#in~t.offset| 0)) (not (= 0 |size_#in~t.base|)))} is VALID [2020-07-17 22:52:49,955 INFO L280 TraceCheckUtils]: 31: Hoare triple {757#(or (not (= |size_#in~t.offset| 0)) (not (= 0 |size_#in~t.base|)))} assume -2147483648 <= #t~ret27 && #t~ret27 <= 2147483647;#res := 1 + (#t~ret25 + #t~ret27);havoc #t~ret25;havoc #t~ret27;havoc #t~mem24.base, #t~mem24.offset;havoc #t~mem26.base, #t~mem26.offset; {757#(or (not (= |size_#in~t.offset| 0)) (not (= 0 |size_#in~t.base|)))} is VALID [2020-07-17 22:52:49,956 INFO L280 TraceCheckUtils]: 32: Hoare triple {757#(or (not (= |size_#in~t.offset| 0)) (not (= 0 |size_#in~t.base|)))} assume true; {757#(or (not (= |size_#in~t.offset| 0)) (not (= 0 |size_#in~t.base|)))} is VALID [2020-07-17 22:52:49,957 INFO L275 TraceCheckUtils]: 33: Hoare quadruple {757#(or (not (= |size_#in~t.offset| 0)) (not (= 0 |size_#in~t.base|)))} {721#(and (= 0 task_~t.offset) (= 0 task_~t.base))} #167#return; {712#false} is VALID [2020-07-17 22:52:49,957 INFO L280 TraceCheckUtils]: 34: Hoare triple {712#false} assume -2147483648 <= #t~ret29 && #t~ret29 <= 2147483647;~n~1 := #t~ret29;havoc #t~ret29; {712#false} is VALID [2020-07-17 22:52:49,958 INFO L263 TraceCheckUtils]: 35: Hoare triple {712#false} call assume_cycle_if_not((if 0 != ~n~1 then 1 else 0)); {712#false} is VALID [2020-07-17 22:52:49,958 INFO L280 TraceCheckUtils]: 36: Hoare triple {712#false} ~cond := #in~cond; {712#false} is VALID [2020-07-17 22:52:49,958 INFO L280 TraceCheckUtils]: 37: Hoare triple {712#false} assume !(0 == ~cond); {712#false} is VALID [2020-07-17 22:52:49,958 INFO L280 TraceCheckUtils]: 38: Hoare triple {712#false} assume true; {712#false} is VALID [2020-07-17 22:52:49,959 INFO L275 TraceCheckUtils]: 39: Hoare quadruple {712#false} {712#false} #169#return; {712#false} is VALID [2020-07-17 22:52:49,959 INFO L280 TraceCheckUtils]: 40: Hoare triple {712#false} call #t~malloc30.base, #t~malloc30.offset := #Ultimate.allocOnHeap(4 * ~n~1); {712#false} is VALID [2020-07-17 22:52:49,959 INFO L263 TraceCheckUtils]: 41: Hoare triple {712#false} call #Ultimate.meminit(#t~malloc30.base, #t~malloc30.offset, ~n~1, 4, 4 * ~n~1); {712#false} is VALID [2020-07-17 22:52:49,960 INFO L280 TraceCheckUtils]: 42: Hoare triple {712#false} #memory_int := ~initToZeroAtPointerBaseAddress~int(#memory_int, #ptr.base); {712#false} is VALID [2020-07-17 22:52:49,960 INFO L280 TraceCheckUtils]: 43: Hoare triple {712#false} assume true; {712#false} is VALID [2020-07-17 22:52:49,961 INFO L275 TraceCheckUtils]: 44: Hoare quadruple {712#false} {712#false} #171#return; {712#false} is VALID [2020-07-17 22:52:49,961 INFO L280 TraceCheckUtils]: 45: Hoare triple {712#false} ~x~0.base, ~x~0.offset := #t~malloc30.base, #t~malloc30.offset; {712#false} is VALID [2020-07-17 22:52:49,962 INFO L263 TraceCheckUtils]: 46: Hoare triple {712#false} call #t~ret31 := tree_inorder(~t.base, ~t.offset, ~x~0.base, ~x~0.offset, ~n~1); {712#false} is VALID [2020-07-17 22:52:49,963 INFO L280 TraceCheckUtils]: 47: Hoare triple {712#false} ~t.base, ~t.offset := #in~t.base, #in~t.offset;~a.base, ~a.offset := #in~a.base, #in~a.offset;~i := #in~i; {712#false} is VALID [2020-07-17 22:52:49,963 INFO L280 TraceCheckUtils]: 48: Hoare triple {712#false} assume ~t.base == 0 && ~t.offset == 0;#res := ~i; {712#false} is VALID [2020-07-17 22:52:49,963 INFO L280 TraceCheckUtils]: 49: Hoare triple {712#false} assume true; {712#false} is VALID [2020-07-17 22:52:49,964 INFO L275 TraceCheckUtils]: 50: Hoare quadruple {712#false} {712#false} #173#return; {712#false} is VALID [2020-07-17 22:52:49,964 INFO L280 TraceCheckUtils]: 51: Hoare triple {712#false} assume -2147483648 <= #t~ret31 && #t~ret31 <= 2147483647;havoc #t~ret31;call #t~mem32 := read~int(~x~0.base, ~x~0.offset, 4); {712#false} is VALID [2020-07-17 22:52:49,964 INFO L263 TraceCheckUtils]: 52: Hoare triple {712#false} call __VERIFIER_assert((if ~a~1 == #t~mem32 then 1 else 0)); {712#false} is VALID [2020-07-17 22:52:49,965 INFO L280 TraceCheckUtils]: 53: Hoare triple {712#false} ~cond := #in~cond; {712#false} is VALID [2020-07-17 22:52:49,965 INFO L280 TraceCheckUtils]: 54: Hoare triple {712#false} assume 0 == ~cond; {712#false} is VALID [2020-07-17 22:52:49,968 INFO L280 TraceCheckUtils]: 55: Hoare triple {712#false} assume !false; {712#false} is VALID [2020-07-17 22:52:49,973 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-17 22:52:49,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-17 22:52:49,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 12 [2020-07-17 22:52:49,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739698320] [2020-07-17 22:52:49,980 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 56 [2020-07-17 22:52:49,988 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-17 22:52:49,989 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 12 states. [2020-07-17 22:52:50,070 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 71 edges. 71 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:52:50,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-17 22:52:50,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 22:52:50,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-17 22:52:50,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-07-17 22:52:50,072 INFO L87 Difference]: Start difference. First operand 91 states and 115 transitions. Second operand 12 states. [2020-07-17 22:52:53,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:52:53,538 INFO L93 Difference]: Finished difference Result 165 states and 211 transitions. [2020-07-17 22:52:53,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-17 22:52:53,538 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 56 [2020-07-17 22:52:53,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 22:52:53,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-07-17 22:52:53,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 207 transitions. [2020-07-17 22:52:53,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-07-17 22:52:53,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 207 transitions. [2020-07-17 22:52:53,552 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 12 states and 207 transitions. [2020-07-17 22:52:53,909 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 207 edges. 207 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:52:53,917 INFO L225 Difference]: With dead ends: 165 [2020-07-17 22:52:53,917 INFO L226 Difference]: Without dead ends: 97 [2020-07-17 22:52:53,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 69 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2020-07-17 22:52:53,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-07-17 22:52:53,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 93. [2020-07-17 22:52:53,998 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-17 22:52:53,998 INFO L82 GeneralOperation]: Start isEquivalent. First operand 97 states. Second operand 93 states. [2020-07-17 22:52:53,998 INFO L74 IsIncluded]: Start isIncluded. First operand 97 states. Second operand 93 states. [2020-07-17 22:52:53,998 INFO L87 Difference]: Start difference. First operand 97 states. Second operand 93 states. [2020-07-17 22:52:54,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:52:54,005 INFO L93 Difference]: Finished difference Result 97 states and 125 transitions. [2020-07-17 22:52:54,006 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 125 transitions. [2020-07-17 22:52:54,007 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:52:54,008 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:52:54,008 INFO L74 IsIncluded]: Start isIncluded. First operand 93 states. Second operand 97 states. [2020-07-17 22:52:54,008 INFO L87 Difference]: Start difference. First operand 93 states. Second operand 97 states. [2020-07-17 22:52:54,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:52:54,015 INFO L93 Difference]: Finished difference Result 97 states and 125 transitions. [2020-07-17 22:52:54,016 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 125 transitions. [2020-07-17 22:52:54,017 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:52:54,017 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:52:54,017 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-17 22:52:54,017 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-17 22:52:54,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-07-17 22:52:54,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 118 transitions. [2020-07-17 22:52:54,023 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 118 transitions. Word has length 56 [2020-07-17 22:52:54,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 22:52:54,024 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 118 transitions. [2020-07-17 22:52:54,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-17 22:52:54,024 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 118 transitions. [2020-07-17 22:52:54,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-07-17 22:52:54,027 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:52:54,027 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] [2020-07-17 22:52:54,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-17 22:52:54,242 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:52:54,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:52:54,242 INFO L82 PathProgramCache]: Analyzing trace with hash -217941329, now seen corresponding path program 1 times [2020-07-17 22:52:54,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:52:54,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455900549] [2020-07-17 22:52:54,243 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:52:54,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:52:54,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:52:54,388 INFO L280 TraceCheckUtils]: 0: Hoare triple {1558#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {1506#true} is VALID [2020-07-17 22:52:54,389 INFO L280 TraceCheckUtils]: 1: Hoare triple {1506#true} assume true; {1506#true} is VALID [2020-07-17 22:52:54,389 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {1506#true} {1506#true} #195#return; {1506#true} is VALID [2020-07-17 22:52:54,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:52:54,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:52:54,503 INFO L280 TraceCheckUtils]: 0: Hoare triple {1559#(and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} assume 0 != #t~nondet1 % 256;havoc #t~nondet1;#res.base, #res.offset := 0, 0; {1506#true} is VALID [2020-07-17 22:52:54,503 INFO L280 TraceCheckUtils]: 1: Hoare triple {1506#true} assume true; {1506#true} is VALID [2020-07-17 22:52:54,504 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {1506#true} {1560#(or (<= (+ nondet_tree_~n~0.base 1) 0) (<= 1 nondet_tree_~n~0.base))} #161#return; {1560#(or (<= (+ nondet_tree_~n~0.base 1) 0) (<= 1 nondet_tree_~n~0.base))} is VALID [2020-07-17 22:52:54,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:52:54,515 INFO L280 TraceCheckUtils]: 0: Hoare triple {1559#(and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} assume 0 != #t~nondet1 % 256;havoc #t~nondet1;#res.base, #res.offset := 0, 0; {1506#true} is VALID [2020-07-17 22:52:54,516 INFO L280 TraceCheckUtils]: 1: Hoare triple {1506#true} assume true; {1506#true} is VALID [2020-07-17 22:52:54,517 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {1506#true} {1560#(or (<= (+ nondet_tree_~n~0.base 1) 0) (<= 1 nondet_tree_~n~0.base))} #163#return; {1560#(or (<= (+ nondet_tree_~n~0.base 1) 0) (<= 1 nondet_tree_~n~0.base))} is VALID [2020-07-17 22:52:54,518 INFO L280 TraceCheckUtils]: 0: Hoare triple {1559#(and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} assume !(0 != #t~nondet1 % 256);havoc #t~nondet1;call #t~malloc2.base, #t~malloc2.offset := #Ultimate.allocOnHeap(12);~n~0.base, ~n~0.offset := #t~malloc2.base, #t~malloc2.offset;assume -2147483648 <= #t~nondet3 && #t~nondet3 <= 2147483647;call write~int(#t~nondet3, ~n~0.base, ~n~0.offset, 4);havoc #t~nondet3; {1560#(or (<= (+ nondet_tree_~n~0.base 1) 0) (<= 1 nondet_tree_~n~0.base))} is VALID [2020-07-17 22:52:54,519 INFO L263 TraceCheckUtils]: 1: Hoare triple {1560#(or (<= (+ nondet_tree_~n~0.base 1) 0) (<= 1 nondet_tree_~n~0.base))} call #t~ret4.base, #t~ret4.offset := nondet_tree(); {1559#(and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} is VALID [2020-07-17 22:52:54,519 INFO L280 TraceCheckUtils]: 2: Hoare triple {1559#(and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} assume 0 != #t~nondet1 % 256;havoc #t~nondet1;#res.base, #res.offset := 0, 0; {1506#true} is VALID [2020-07-17 22:52:54,520 INFO L280 TraceCheckUtils]: 3: Hoare triple {1506#true} assume true; {1506#true} is VALID [2020-07-17 22:52:54,520 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {1506#true} {1560#(or (<= (+ nondet_tree_~n~0.base 1) 0) (<= 1 nondet_tree_~n~0.base))} #161#return; {1560#(or (<= (+ nondet_tree_~n~0.base 1) 0) (<= 1 nondet_tree_~n~0.base))} is VALID [2020-07-17 22:52:54,521 INFO L280 TraceCheckUtils]: 5: Hoare triple {1560#(or (<= (+ nondet_tree_~n~0.base 1) 0) (<= 1 nondet_tree_~n~0.base))} call write~$Pointer$(#t~ret4.base, #t~ret4.offset, ~n~0.base, 4 + ~n~0.offset, 4);havoc #t~ret4.base, #t~ret4.offset; {1560#(or (<= (+ nondet_tree_~n~0.base 1) 0) (<= 1 nondet_tree_~n~0.base))} is VALID [2020-07-17 22:52:54,521 INFO L263 TraceCheckUtils]: 6: Hoare triple {1560#(or (<= (+ nondet_tree_~n~0.base 1) 0) (<= 1 nondet_tree_~n~0.base))} call #t~ret5.base, #t~ret5.offset := nondet_tree(); {1559#(and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} is VALID [2020-07-17 22:52:54,522 INFO L280 TraceCheckUtils]: 7: Hoare triple {1559#(and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} assume 0 != #t~nondet1 % 256;havoc #t~nondet1;#res.base, #res.offset := 0, 0; {1506#true} is VALID [2020-07-17 22:52:54,522 INFO L280 TraceCheckUtils]: 8: Hoare triple {1506#true} assume true; {1506#true} is VALID [2020-07-17 22:52:54,522 INFO L275 TraceCheckUtils]: 9: Hoare quadruple {1506#true} {1560#(or (<= (+ nondet_tree_~n~0.base 1) 0) (<= 1 nondet_tree_~n~0.base))} #163#return; {1560#(or (<= (+ nondet_tree_~n~0.base 1) 0) (<= 1 nondet_tree_~n~0.base))} is VALID [2020-07-17 22:52:54,523 INFO L280 TraceCheckUtils]: 10: Hoare triple {1560#(or (<= (+ nondet_tree_~n~0.base 1) 0) (<= 1 nondet_tree_~n~0.base))} call write~$Pointer$(#t~ret5.base, #t~ret5.offset, ~n~0.base, 8 + ~n~0.offset, 4);havoc #t~ret5.base, #t~ret5.offset;#res.base, #res.offset := ~n~0.base, ~n~0.offset; {1567#(or (<= (+ |nondet_tree_#res.base| 1) 0) (<= 1 |nondet_tree_#res.base|))} is VALID [2020-07-17 22:52:54,524 INFO L280 TraceCheckUtils]: 11: Hoare triple {1567#(or (<= (+ |nondet_tree_#res.base| 1) 0) (<= 1 |nondet_tree_#res.base|))} assume true; {1567#(or (<= (+ |nondet_tree_#res.base| 1) 0) (<= 1 |nondet_tree_#res.base|))} is VALID [2020-07-17 22:52:54,524 INFO L275 TraceCheckUtils]: 12: Hoare quadruple {1567#(or (<= (+ |nondet_tree_#res.base| 1) 0) (<= 1 |nondet_tree_#res.base|))} {1506#true} #153#return; {1524#(not (= 0 |main_#t~ret41.base|))} is VALID [2020-07-17 22:52:54,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:52:54,567 INFO L280 TraceCheckUtils]: 0: Hoare triple {1506#true} ~n.base, ~n.offset := #in~n.base, #in~n.offset; {1568#(= min_~n.base |min_#in~n.base|)} is VALID [2020-07-17 22:52:54,568 INFO L280 TraceCheckUtils]: 1: Hoare triple {1568#(= min_~n.base |min_#in~n.base|)} assume ~n.base == 0 && ~n.offset == 0;#res := 2147483647; {1569#(= 0 |min_#in~n.base|)} is VALID [2020-07-17 22:52:54,568 INFO L280 TraceCheckUtils]: 2: Hoare triple {1569#(= 0 |min_#in~n.base|)} assume true; {1569#(= 0 |min_#in~n.base|)} is VALID [2020-07-17 22:52:54,569 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {1569#(= 0 |min_#in~n.base|)} {1526#(not (= 0 task_~t.base))} #165#return; {1507#false} is VALID [2020-07-17 22:52:54,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:52:54,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:52:54,591 INFO L280 TraceCheckUtils]: 0: Hoare triple {1506#true} ~t.base, ~t.offset := #in~t.base, #in~t.offset; {1506#true} is VALID [2020-07-17 22:52:54,592 INFO L280 TraceCheckUtils]: 1: Hoare triple {1506#true} assume ~t.base == 0 && ~t.offset == 0;#res := 0; {1506#true} is VALID [2020-07-17 22:52:54,592 INFO L280 TraceCheckUtils]: 2: Hoare triple {1506#true} assume true; {1506#true} is VALID [2020-07-17 22:52:54,594 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {1506#true} {1506#true} #191#return; {1506#true} is VALID [2020-07-17 22:52:54,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:52:54,604 INFO L280 TraceCheckUtils]: 0: Hoare triple {1506#true} ~t.base, ~t.offset := #in~t.base, #in~t.offset; {1506#true} is VALID [2020-07-17 22:52:54,604 INFO L280 TraceCheckUtils]: 1: Hoare triple {1506#true} assume ~t.base == 0 && ~t.offset == 0;#res := 0; {1506#true} is VALID [2020-07-17 22:52:54,605 INFO L280 TraceCheckUtils]: 2: Hoare triple {1506#true} assume true; {1506#true} is VALID [2020-07-17 22:52:54,605 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {1506#true} {1506#true} #193#return; {1506#true} is VALID [2020-07-17 22:52:54,605 INFO L280 TraceCheckUtils]: 0: Hoare triple {1506#true} ~t.base, ~t.offset := #in~t.base, #in~t.offset; {1506#true} is VALID [2020-07-17 22:52:54,605 INFO L280 TraceCheckUtils]: 1: Hoare triple {1506#true} assume !(~t.base == 0 && ~t.offset == 0);call #t~mem24.base, #t~mem24.offset := read~$Pointer$(~t.base, 4 + ~t.offset, 4); {1506#true} is VALID [2020-07-17 22:52:54,606 INFO L263 TraceCheckUtils]: 2: Hoare triple {1506#true} call #t~ret25 := size(#t~mem24.base, #t~mem24.offset); {1506#true} is VALID [2020-07-17 22:52:54,606 INFO L280 TraceCheckUtils]: 3: Hoare triple {1506#true} ~t.base, ~t.offset := #in~t.base, #in~t.offset; {1506#true} is VALID [2020-07-17 22:52:54,606 INFO L280 TraceCheckUtils]: 4: Hoare triple {1506#true} assume ~t.base == 0 && ~t.offset == 0;#res := 0; {1506#true} is VALID [2020-07-17 22:52:54,607 INFO L280 TraceCheckUtils]: 5: Hoare triple {1506#true} assume true; {1506#true} is VALID [2020-07-17 22:52:54,607 INFO L275 TraceCheckUtils]: 6: Hoare quadruple {1506#true} {1506#true} #191#return; {1506#true} is VALID [2020-07-17 22:52:54,608 INFO L280 TraceCheckUtils]: 7: Hoare triple {1506#true} assume -2147483648 <= #t~ret25 && #t~ret25 <= 2147483647;call #t~mem26.base, #t~mem26.offset := read~$Pointer$(~t.base, 8 + ~t.offset, 4); {1506#true} is VALID [2020-07-17 22:52:54,608 INFO L263 TraceCheckUtils]: 8: Hoare triple {1506#true} call #t~ret27 := size(#t~mem26.base, #t~mem26.offset); {1506#true} is VALID [2020-07-17 22:52:54,608 INFO L280 TraceCheckUtils]: 9: Hoare triple {1506#true} ~t.base, ~t.offset := #in~t.base, #in~t.offset; {1506#true} is VALID [2020-07-17 22:52:54,608 INFO L280 TraceCheckUtils]: 10: Hoare triple {1506#true} assume ~t.base == 0 && ~t.offset == 0;#res := 0; {1506#true} is VALID [2020-07-17 22:52:54,609 INFO L280 TraceCheckUtils]: 11: Hoare triple {1506#true} assume true; {1506#true} is VALID [2020-07-17 22:52:54,609 INFO L275 TraceCheckUtils]: 12: Hoare quadruple {1506#true} {1506#true} #193#return; {1506#true} is VALID [2020-07-17 22:52:54,609 INFO L280 TraceCheckUtils]: 13: Hoare triple {1506#true} assume -2147483648 <= #t~ret27 && #t~ret27 <= 2147483647;#res := 1 + (#t~ret25 + #t~ret27);havoc #t~ret25;havoc #t~ret27;havoc #t~mem24.base, #t~mem24.offset;havoc #t~mem26.base, #t~mem26.offset; {1506#true} is VALID [2020-07-17 22:52:54,609 INFO L280 TraceCheckUtils]: 14: Hoare triple {1506#true} assume true; {1506#true} is VALID [2020-07-17 22:52:54,610 INFO L275 TraceCheckUtils]: 15: Hoare quadruple {1506#true} {1507#false} #167#return; {1507#false} is VALID [2020-07-17 22:52:54,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:52:54,615 INFO L280 TraceCheckUtils]: 0: Hoare triple {1506#true} ~cond := #in~cond; {1506#true} is VALID [2020-07-17 22:52:54,615 INFO L280 TraceCheckUtils]: 1: Hoare triple {1506#true} assume !(0 == ~cond); {1506#true} is VALID [2020-07-17 22:52:54,615 INFO L280 TraceCheckUtils]: 2: Hoare triple {1506#true} assume true; {1506#true} is VALID [2020-07-17 22:52:54,616 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {1506#true} {1507#false} #169#return; {1507#false} is VALID [2020-07-17 22:52:54,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:52:54,634 INFO L280 TraceCheckUtils]: 0: Hoare triple {1578#(= |#memory_int| |old(#memory_int)|)} #memory_int := ~initToZeroAtPointerBaseAddress~int(#memory_int, #ptr.base); {1506#true} is VALID [2020-07-17 22:52:54,634 INFO L280 TraceCheckUtils]: 1: Hoare triple {1506#true} assume true; {1506#true} is VALID [2020-07-17 22:52:54,635 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {1506#true} {1507#false} #171#return; {1507#false} is VALID [2020-07-17 22:52:54,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:52:54,662 INFO L280 TraceCheckUtils]: 0: Hoare triple {1579#(and (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} ~t.base, ~t.offset := #in~t.base, #in~t.offset;~a.base, ~a.offset := #in~a.base, #in~a.offset;~i := #in~i; {1506#true} is VALID [2020-07-17 22:52:54,662 INFO L280 TraceCheckUtils]: 1: Hoare triple {1506#true} assume ~t.base == 0 && ~t.offset == 0;#res := ~i; {1506#true} is VALID [2020-07-17 22:52:54,662 INFO L280 TraceCheckUtils]: 2: Hoare triple {1506#true} assume true; {1506#true} is VALID [2020-07-17 22:52:54,662 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {1506#true} {1507#false} #173#return; {1507#false} is VALID [2020-07-17 22:52:54,663 INFO L263 TraceCheckUtils]: 0: Hoare triple {1506#true} call ULTIMATE.init(); {1558#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-17 22:52:54,664 INFO L280 TraceCheckUtils]: 1: Hoare triple {1558#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {1506#true} is VALID [2020-07-17 22:52:54,664 INFO L280 TraceCheckUtils]: 2: Hoare triple {1506#true} assume true; {1506#true} is VALID [2020-07-17 22:52:54,664 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {1506#true} {1506#true} #195#return; {1506#true} is VALID [2020-07-17 22:52:54,664 INFO L263 TraceCheckUtils]: 4: Hoare triple {1506#true} call #t~ret42 := main(); {1506#true} is VALID [2020-07-17 22:52:54,665 INFO L263 TraceCheckUtils]: 5: Hoare triple {1506#true} call #t~ret41.base, #t~ret41.offset := nondet_tree(); {1559#(and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} is VALID [2020-07-17 22:52:54,667 INFO L280 TraceCheckUtils]: 6: Hoare triple {1559#(and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} assume !(0 != #t~nondet1 % 256);havoc #t~nondet1;call #t~malloc2.base, #t~malloc2.offset := #Ultimate.allocOnHeap(12);~n~0.base, ~n~0.offset := #t~malloc2.base, #t~malloc2.offset;assume -2147483648 <= #t~nondet3 && #t~nondet3 <= 2147483647;call write~int(#t~nondet3, ~n~0.base, ~n~0.offset, 4);havoc #t~nondet3; {1560#(or (<= (+ nondet_tree_~n~0.base 1) 0) (<= 1 nondet_tree_~n~0.base))} is VALID [2020-07-17 22:52:54,668 INFO L263 TraceCheckUtils]: 7: Hoare triple {1560#(or (<= (+ nondet_tree_~n~0.base 1) 0) (<= 1 nondet_tree_~n~0.base))} call #t~ret4.base, #t~ret4.offset := nondet_tree(); {1559#(and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} is VALID [2020-07-17 22:52:54,668 INFO L280 TraceCheckUtils]: 8: Hoare triple {1559#(and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} assume 0 != #t~nondet1 % 256;havoc #t~nondet1;#res.base, #res.offset := 0, 0; {1506#true} is VALID [2020-07-17 22:52:54,668 INFO L280 TraceCheckUtils]: 9: Hoare triple {1506#true} assume true; {1506#true} is VALID [2020-07-17 22:52:54,669 INFO L275 TraceCheckUtils]: 10: Hoare quadruple {1506#true} {1560#(or (<= (+ nondet_tree_~n~0.base 1) 0) (<= 1 nondet_tree_~n~0.base))} #161#return; {1560#(or (<= (+ nondet_tree_~n~0.base 1) 0) (<= 1 nondet_tree_~n~0.base))} is VALID [2020-07-17 22:52:54,670 INFO L280 TraceCheckUtils]: 11: Hoare triple {1560#(or (<= (+ nondet_tree_~n~0.base 1) 0) (<= 1 nondet_tree_~n~0.base))} call write~$Pointer$(#t~ret4.base, #t~ret4.offset, ~n~0.base, 4 + ~n~0.offset, 4);havoc #t~ret4.base, #t~ret4.offset; {1560#(or (<= (+ nondet_tree_~n~0.base 1) 0) (<= 1 nondet_tree_~n~0.base))} is VALID [2020-07-17 22:52:54,672 INFO L263 TraceCheckUtils]: 12: Hoare triple {1560#(or (<= (+ nondet_tree_~n~0.base 1) 0) (<= 1 nondet_tree_~n~0.base))} call #t~ret5.base, #t~ret5.offset := nondet_tree(); {1559#(and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} is VALID [2020-07-17 22:52:54,673 INFO L280 TraceCheckUtils]: 13: Hoare triple {1559#(and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} assume 0 != #t~nondet1 % 256;havoc #t~nondet1;#res.base, #res.offset := 0, 0; {1506#true} is VALID [2020-07-17 22:52:54,673 INFO L280 TraceCheckUtils]: 14: Hoare triple {1506#true} assume true; {1506#true} is VALID [2020-07-17 22:52:54,674 INFO L275 TraceCheckUtils]: 15: Hoare quadruple {1506#true} {1560#(or (<= (+ nondet_tree_~n~0.base 1) 0) (<= 1 nondet_tree_~n~0.base))} #163#return; {1560#(or (<= (+ nondet_tree_~n~0.base 1) 0) (<= 1 nondet_tree_~n~0.base))} is VALID [2020-07-17 22:52:54,675 INFO L280 TraceCheckUtils]: 16: Hoare triple {1560#(or (<= (+ nondet_tree_~n~0.base 1) 0) (<= 1 nondet_tree_~n~0.base))} call write~$Pointer$(#t~ret5.base, #t~ret5.offset, ~n~0.base, 8 + ~n~0.offset, 4);havoc #t~ret5.base, #t~ret5.offset;#res.base, #res.offset := ~n~0.base, ~n~0.offset; {1567#(or (<= (+ |nondet_tree_#res.base| 1) 0) (<= 1 |nondet_tree_#res.base|))} is VALID [2020-07-17 22:52:54,675 INFO L280 TraceCheckUtils]: 17: Hoare triple {1567#(or (<= (+ |nondet_tree_#res.base| 1) 0) (<= 1 |nondet_tree_#res.base|))} assume true; {1567#(or (<= (+ |nondet_tree_#res.base| 1) 0) (<= 1 |nondet_tree_#res.base|))} is VALID [2020-07-17 22:52:54,677 INFO L275 TraceCheckUtils]: 18: Hoare quadruple {1567#(or (<= (+ |nondet_tree_#res.base| 1) 0) (<= 1 |nondet_tree_#res.base|))} {1506#true} #153#return; {1524#(not (= 0 |main_#t~ret41.base|))} is VALID [2020-07-17 22:52:54,678 INFO L263 TraceCheckUtils]: 19: Hoare triple {1524#(not (= 0 |main_#t~ret41.base|))} call task(#t~ret41.base, #t~ret41.offset); {1525#(not (= |task_#in~t.base| 0))} is VALID [2020-07-17 22:52:54,678 INFO L280 TraceCheckUtils]: 20: Hoare triple {1525#(not (= |task_#in~t.base| 0))} ~t.base, ~t.offset := #in~t.base, #in~t.offset; {1526#(not (= 0 task_~t.base))} is VALID [2020-07-17 22:52:54,679 INFO L263 TraceCheckUtils]: 21: Hoare triple {1526#(not (= 0 task_~t.base))} call #t~ret28 := min(~t.base, ~t.offset); {1506#true} is VALID [2020-07-17 22:52:54,679 INFO L280 TraceCheckUtils]: 22: Hoare triple {1506#true} ~n.base, ~n.offset := #in~n.base, #in~n.offset; {1568#(= min_~n.base |min_#in~n.base|)} is VALID [2020-07-17 22:52:54,680 INFO L280 TraceCheckUtils]: 23: Hoare triple {1568#(= min_~n.base |min_#in~n.base|)} assume ~n.base == 0 && ~n.offset == 0;#res := 2147483647; {1569#(= 0 |min_#in~n.base|)} is VALID [2020-07-17 22:52:54,681 INFO L280 TraceCheckUtils]: 24: Hoare triple {1569#(= 0 |min_#in~n.base|)} assume true; {1569#(= 0 |min_#in~n.base|)} is VALID [2020-07-17 22:52:54,682 INFO L275 TraceCheckUtils]: 25: Hoare quadruple {1569#(= 0 |min_#in~n.base|)} {1526#(not (= 0 task_~t.base))} #165#return; {1507#false} is VALID [2020-07-17 22:52:54,682 INFO L280 TraceCheckUtils]: 26: Hoare triple {1507#false} assume -2147483648 <= #t~ret28 && #t~ret28 <= 2147483647;~a~1 := #t~ret28;havoc #t~ret28;call ~#b~1.base, ~#b~1.offset := #Ultimate.allocOnStack(4); {1507#false} is VALID [2020-07-17 22:52:54,682 INFO L263 TraceCheckUtils]: 27: Hoare triple {1507#false} call #t~ret29 := size(~t.base, ~t.offset); {1506#true} is VALID [2020-07-17 22:52:54,683 INFO L280 TraceCheckUtils]: 28: Hoare triple {1506#true} ~t.base, ~t.offset := #in~t.base, #in~t.offset; {1506#true} is VALID [2020-07-17 22:52:54,683 INFO L280 TraceCheckUtils]: 29: Hoare triple {1506#true} assume !(~t.base == 0 && ~t.offset == 0);call #t~mem24.base, #t~mem24.offset := read~$Pointer$(~t.base, 4 + ~t.offset, 4); {1506#true} is VALID [2020-07-17 22:52:54,683 INFO L263 TraceCheckUtils]: 30: Hoare triple {1506#true} call #t~ret25 := size(#t~mem24.base, #t~mem24.offset); {1506#true} is VALID [2020-07-17 22:52:54,684 INFO L280 TraceCheckUtils]: 31: Hoare triple {1506#true} ~t.base, ~t.offset := #in~t.base, #in~t.offset; {1506#true} is VALID [2020-07-17 22:52:54,684 INFO L280 TraceCheckUtils]: 32: Hoare triple {1506#true} assume ~t.base == 0 && ~t.offset == 0;#res := 0; {1506#true} is VALID [2020-07-17 22:52:54,684 INFO L280 TraceCheckUtils]: 33: Hoare triple {1506#true} assume true; {1506#true} is VALID [2020-07-17 22:52:54,685 INFO L275 TraceCheckUtils]: 34: Hoare quadruple {1506#true} {1506#true} #191#return; {1506#true} is VALID [2020-07-17 22:52:54,685 INFO L280 TraceCheckUtils]: 35: Hoare triple {1506#true} assume -2147483648 <= #t~ret25 && #t~ret25 <= 2147483647;call #t~mem26.base, #t~mem26.offset := read~$Pointer$(~t.base, 8 + ~t.offset, 4); {1506#true} is VALID [2020-07-17 22:52:54,685 INFO L263 TraceCheckUtils]: 36: Hoare triple {1506#true} call #t~ret27 := size(#t~mem26.base, #t~mem26.offset); {1506#true} is VALID [2020-07-17 22:52:54,685 INFO L280 TraceCheckUtils]: 37: Hoare triple {1506#true} ~t.base, ~t.offset := #in~t.base, #in~t.offset; {1506#true} is VALID [2020-07-17 22:52:54,685 INFO L280 TraceCheckUtils]: 38: Hoare triple {1506#true} assume ~t.base == 0 && ~t.offset == 0;#res := 0; {1506#true} is VALID [2020-07-17 22:52:54,686 INFO L280 TraceCheckUtils]: 39: Hoare triple {1506#true} assume true; {1506#true} is VALID [2020-07-17 22:52:54,686 INFO L275 TraceCheckUtils]: 40: Hoare quadruple {1506#true} {1506#true} #193#return; {1506#true} is VALID [2020-07-17 22:52:54,686 INFO L280 TraceCheckUtils]: 41: Hoare triple {1506#true} assume -2147483648 <= #t~ret27 && #t~ret27 <= 2147483647;#res := 1 + (#t~ret25 + #t~ret27);havoc #t~ret25;havoc #t~ret27;havoc #t~mem24.base, #t~mem24.offset;havoc #t~mem26.base, #t~mem26.offset; {1506#true} is VALID [2020-07-17 22:52:54,686 INFO L280 TraceCheckUtils]: 42: Hoare triple {1506#true} assume true; {1506#true} is VALID [2020-07-17 22:52:54,686 INFO L275 TraceCheckUtils]: 43: Hoare quadruple {1506#true} {1507#false} #167#return; {1507#false} is VALID [2020-07-17 22:52:54,686 INFO L280 TraceCheckUtils]: 44: Hoare triple {1507#false} assume -2147483648 <= #t~ret29 && #t~ret29 <= 2147483647;~n~1 := #t~ret29;havoc #t~ret29; {1507#false} is VALID [2020-07-17 22:52:54,687 INFO L263 TraceCheckUtils]: 45: Hoare triple {1507#false} call assume_cycle_if_not((if 0 != ~n~1 then 1 else 0)); {1506#true} is VALID [2020-07-17 22:52:54,687 INFO L280 TraceCheckUtils]: 46: Hoare triple {1506#true} ~cond := #in~cond; {1506#true} is VALID [2020-07-17 22:52:54,687 INFO L280 TraceCheckUtils]: 47: Hoare triple {1506#true} assume !(0 == ~cond); {1506#true} is VALID [2020-07-17 22:52:54,687 INFO L280 TraceCheckUtils]: 48: Hoare triple {1506#true} assume true; {1506#true} is VALID [2020-07-17 22:52:54,688 INFO L275 TraceCheckUtils]: 49: Hoare quadruple {1506#true} {1507#false} #169#return; {1507#false} is VALID [2020-07-17 22:52:54,688 INFO L280 TraceCheckUtils]: 50: Hoare triple {1507#false} call #t~malloc30.base, #t~malloc30.offset := #Ultimate.allocOnHeap(4 * ~n~1); {1507#false} is VALID [2020-07-17 22:52:54,688 INFO L263 TraceCheckUtils]: 51: Hoare triple {1507#false} call #Ultimate.meminit(#t~malloc30.base, #t~malloc30.offset, ~n~1, 4, 4 * ~n~1); {1578#(= |#memory_int| |old(#memory_int)|)} is VALID [2020-07-17 22:52:54,688 INFO L280 TraceCheckUtils]: 52: Hoare triple {1578#(= |#memory_int| |old(#memory_int)|)} #memory_int := ~initToZeroAtPointerBaseAddress~int(#memory_int, #ptr.base); {1506#true} is VALID [2020-07-17 22:52:54,689 INFO L280 TraceCheckUtils]: 53: Hoare triple {1506#true} assume true; {1506#true} is VALID [2020-07-17 22:52:54,689 INFO L275 TraceCheckUtils]: 54: Hoare quadruple {1506#true} {1507#false} #171#return; {1507#false} is VALID [2020-07-17 22:52:54,689 INFO L280 TraceCheckUtils]: 55: Hoare triple {1507#false} ~x~0.base, ~x~0.offset := #t~malloc30.base, #t~malloc30.offset; {1507#false} is VALID [2020-07-17 22:52:54,689 INFO L263 TraceCheckUtils]: 56: Hoare triple {1507#false} call #t~ret31 := tree_inorder(~t.base, ~t.offset, ~x~0.base, ~x~0.offset, ~n~1); {1579#(and (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} is VALID [2020-07-17 22:52:54,689 INFO L280 TraceCheckUtils]: 57: Hoare triple {1579#(and (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} ~t.base, ~t.offset := #in~t.base, #in~t.offset;~a.base, ~a.offset := #in~a.base, #in~a.offset;~i := #in~i; {1506#true} is VALID [2020-07-17 22:52:54,690 INFO L280 TraceCheckUtils]: 58: Hoare triple {1506#true} assume ~t.base == 0 && ~t.offset == 0;#res := ~i; {1506#true} is VALID [2020-07-17 22:52:54,690 INFO L280 TraceCheckUtils]: 59: Hoare triple {1506#true} assume true; {1506#true} is VALID [2020-07-17 22:52:54,690 INFO L275 TraceCheckUtils]: 60: Hoare quadruple {1506#true} {1507#false} #173#return; {1507#false} is VALID [2020-07-17 22:52:54,690 INFO L280 TraceCheckUtils]: 61: Hoare triple {1507#false} assume -2147483648 <= #t~ret31 && #t~ret31 <= 2147483647;havoc #t~ret31;call #t~mem32 := read~int(~x~0.base, ~x~0.offset, 4); {1507#false} is VALID [2020-07-17 22:52:54,691 INFO L263 TraceCheckUtils]: 62: Hoare triple {1507#false} call __VERIFIER_assert((if ~a~1 == #t~mem32 then 1 else 0)); {1507#false} is VALID [2020-07-17 22:52:54,691 INFO L280 TraceCheckUtils]: 63: Hoare triple {1507#false} ~cond := #in~cond; {1507#false} is VALID [2020-07-17 22:52:54,691 INFO L280 TraceCheckUtils]: 64: Hoare triple {1507#false} assume 0 == ~cond; {1507#false} is VALID [2020-07-17 22:52:54,691 INFO L280 TraceCheckUtils]: 65: Hoare triple {1507#false} assume !false; {1507#false} is VALID [2020-07-17 22:52:54,696 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-17 22:52:54,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455900549] [2020-07-17 22:52:54,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 22:52:54,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-07-17 22:52:54,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251789554] [2020-07-17 22:52:54,698 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 66 [2020-07-17 22:52:54,698 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-17 22:52:54,698 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 13 states. [2020-07-17 22:52:54,764 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 59 edges. 59 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:52:54,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-17 22:52:54,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 22:52:54,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-17 22:52:54,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-07-17 22:52:54,766 INFO L87 Difference]: Start difference. First operand 93 states and 118 transitions. Second operand 13 states. [2020-07-17 22:52:58,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:52:58,550 INFO L93 Difference]: Finished difference Result 164 states and 210 transitions. [2020-07-17 22:52:58,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-17 22:52:58,550 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 66 [2020-07-17 22:52:58,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 22:52:58,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-07-17 22:52:58,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 202 transitions. [2020-07-17 22:52:58,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-07-17 22:52:58,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 202 transitions. [2020-07-17 22:52:58,566 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 14 states and 202 transitions. [2020-07-17 22:52:58,933 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 202 edges. 202 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:52:58,938 INFO L225 Difference]: With dead ends: 164 [2020-07-17 22:52:58,938 INFO L226 Difference]: Without dead ends: 99 [2020-07-17 22:52:58,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2020-07-17 22:52:58,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-07-17 22:52:59,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 95. [2020-07-17 22:52:59,025 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-17 22:52:59,025 INFO L82 GeneralOperation]: Start isEquivalent. First operand 99 states. Second operand 95 states. [2020-07-17 22:52:59,025 INFO L74 IsIncluded]: Start isIncluded. First operand 99 states. Second operand 95 states. [2020-07-17 22:52:59,025 INFO L87 Difference]: Start difference. First operand 99 states. Second operand 95 states. [2020-07-17 22:52:59,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:52:59,033 INFO L93 Difference]: Finished difference Result 99 states and 128 transitions. [2020-07-17 22:52:59,033 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 128 transitions. [2020-07-17 22:52:59,034 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:52:59,035 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:52:59,035 INFO L74 IsIncluded]: Start isIncluded. First operand 95 states. Second operand 99 states. [2020-07-17 22:52:59,035 INFO L87 Difference]: Start difference. First operand 95 states. Second operand 99 states. [2020-07-17 22:52:59,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:52:59,043 INFO L93 Difference]: Finished difference Result 99 states and 128 transitions. [2020-07-17 22:52:59,043 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 128 transitions. [2020-07-17 22:52:59,044 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:52:59,044 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:52:59,045 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-17 22:52:59,045 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-17 22:52:59,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-07-17 22:52:59,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 121 transitions. [2020-07-17 22:52:59,050 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 121 transitions. Word has length 66 [2020-07-17 22:52:59,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 22:52:59,050 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 121 transitions. [2020-07-17 22:52:59,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-17 22:52:59,051 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 121 transitions. [2020-07-17 22:52:59,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-07-17 22:52:59,052 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:52:59,052 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] [2020-07-17 22:52:59,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 22:52:59,053 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:52:59,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:52:59,053 INFO L82 PathProgramCache]: Analyzing trace with hash -62868055, now seen corresponding path program 1 times [2020-07-17 22:52:59,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:52:59,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572329582] [2020-07-17 22:52:59,054 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:52:59,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:52:59,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:52:59,193 INFO L280 TraceCheckUtils]: 0: Hoare triple {2221#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {2155#true} is VALID [2020-07-17 22:52:59,194 INFO L280 TraceCheckUtils]: 1: Hoare triple {2155#true} assume true; {2155#true} is VALID [2020-07-17 22:52:59,194 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {2155#true} {2155#true} #195#return; {2155#true} is VALID [2020-07-17 22:52:59,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:52:59,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:52:59,297 INFO L280 TraceCheckUtils]: 0: Hoare triple {2222#(and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} assume 0 != #t~nondet1 % 256;havoc #t~nondet1;#res.base, #res.offset := 0, 0; {2155#true} is VALID [2020-07-17 22:52:59,297 INFO L280 TraceCheckUtils]: 1: Hoare triple {2155#true} assume true; {2155#true} is VALID [2020-07-17 22:52:59,298 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {2155#true} {2223#(= nondet_tree_~n~0.offset 0)} #161#return; {2223#(= nondet_tree_~n~0.offset 0)} is VALID [2020-07-17 22:52:59,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:52:59,307 INFO L280 TraceCheckUtils]: 0: Hoare triple {2222#(and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} assume 0 != #t~nondet1 % 256;havoc #t~nondet1;#res.base, #res.offset := 0, 0; {2155#true} is VALID [2020-07-17 22:52:59,307 INFO L280 TraceCheckUtils]: 1: Hoare triple {2155#true} assume true; {2155#true} is VALID [2020-07-17 22:52:59,309 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {2155#true} {2223#(= nondet_tree_~n~0.offset 0)} #163#return; {2223#(= nondet_tree_~n~0.offset 0)} is VALID [2020-07-17 22:52:59,310 INFO L280 TraceCheckUtils]: 0: Hoare triple {2222#(and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} assume !(0 != #t~nondet1 % 256);havoc #t~nondet1;call #t~malloc2.base, #t~malloc2.offset := #Ultimate.allocOnHeap(12);~n~0.base, ~n~0.offset := #t~malloc2.base, #t~malloc2.offset;assume -2147483648 <= #t~nondet3 && #t~nondet3 <= 2147483647;call write~int(#t~nondet3, ~n~0.base, ~n~0.offset, 4);havoc #t~nondet3; {2223#(= nondet_tree_~n~0.offset 0)} is VALID [2020-07-17 22:52:59,311 INFO L263 TraceCheckUtils]: 1: Hoare triple {2223#(= nondet_tree_~n~0.offset 0)} call #t~ret4.base, #t~ret4.offset := nondet_tree(); {2222#(and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} is VALID [2020-07-17 22:52:59,311 INFO L280 TraceCheckUtils]: 2: Hoare triple {2222#(and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} assume 0 != #t~nondet1 % 256;havoc #t~nondet1;#res.base, #res.offset := 0, 0; {2155#true} is VALID [2020-07-17 22:52:59,311 INFO L280 TraceCheckUtils]: 3: Hoare triple {2155#true} assume true; {2155#true} is VALID [2020-07-17 22:52:59,312 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {2155#true} {2223#(= nondet_tree_~n~0.offset 0)} #161#return; {2223#(= nondet_tree_~n~0.offset 0)} is VALID [2020-07-17 22:52:59,313 INFO L280 TraceCheckUtils]: 5: Hoare triple {2223#(= nondet_tree_~n~0.offset 0)} call write~$Pointer$(#t~ret4.base, #t~ret4.offset, ~n~0.base, 4 + ~n~0.offset, 4);havoc #t~ret4.base, #t~ret4.offset; {2223#(= nondet_tree_~n~0.offset 0)} is VALID [2020-07-17 22:52:59,314 INFO L263 TraceCheckUtils]: 6: Hoare triple {2223#(= nondet_tree_~n~0.offset 0)} call #t~ret5.base, #t~ret5.offset := nondet_tree(); {2222#(and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} is VALID [2020-07-17 22:52:59,314 INFO L280 TraceCheckUtils]: 7: Hoare triple {2222#(and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} assume 0 != #t~nondet1 % 256;havoc #t~nondet1;#res.base, #res.offset := 0, 0; {2155#true} is VALID [2020-07-17 22:52:59,314 INFO L280 TraceCheckUtils]: 8: Hoare triple {2155#true} assume true; {2155#true} is VALID [2020-07-17 22:52:59,316 INFO L275 TraceCheckUtils]: 9: Hoare quadruple {2155#true} {2223#(= nondet_tree_~n~0.offset 0)} #163#return; {2223#(= nondet_tree_~n~0.offset 0)} is VALID [2020-07-17 22:52:59,318 INFO L280 TraceCheckUtils]: 10: Hoare triple {2223#(= nondet_tree_~n~0.offset 0)} call write~$Pointer$(#t~ret5.base, #t~ret5.offset, ~n~0.base, 8 + ~n~0.offset, 4);havoc #t~ret5.base, #t~ret5.offset;#res.base, #res.offset := ~n~0.base, ~n~0.offset; {2230#(and (<= 0 |nondet_tree_#res.offset|) (<= |nondet_tree_#res.offset| 0))} is VALID [2020-07-17 22:52:59,320 INFO L280 TraceCheckUtils]: 11: Hoare triple {2230#(and (<= 0 |nondet_tree_#res.offset|) (<= |nondet_tree_#res.offset| 0))} assume true; {2230#(and (<= 0 |nondet_tree_#res.offset|) (<= |nondet_tree_#res.offset| 0))} is VALID [2020-07-17 22:52:59,321 INFO L275 TraceCheckUtils]: 12: Hoare quadruple {2230#(and (<= 0 |nondet_tree_#res.offset|) (<= |nondet_tree_#res.offset| 0))} {2155#true} #153#return; {2173#(= 0 |main_#t~ret41.offset|)} is VALID [2020-07-17 22:52:59,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:52:59,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:52:59,456 INFO L280 TraceCheckUtils]: 0: Hoare triple {2155#true} ~n.base, ~n.offset := #in~n.base, #in~n.offset; {2155#true} is VALID [2020-07-17 22:52:59,457 INFO L280 TraceCheckUtils]: 1: Hoare triple {2155#true} assume ~n.base == 0 && ~n.offset == 0;#res := 2147483647; {2155#true} is VALID [2020-07-17 22:52:59,457 INFO L280 TraceCheckUtils]: 2: Hoare triple {2155#true} assume true; {2155#true} is VALID [2020-07-17 22:52:59,459 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {2155#true} {2232#(or (not (= 0 |min_#in~n.base|)) (not (= 0 |min_#in~n.offset|)))} #157#return; {2232#(or (not (= 0 |min_#in~n.base|)) (not (= 0 |min_#in~n.offset|)))} is VALID [2020-07-17 22:52:59,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:52:59,467 INFO L280 TraceCheckUtils]: 0: Hoare triple {2155#true} ~n.base, ~n.offset := #in~n.base, #in~n.offset; {2155#true} is VALID [2020-07-17 22:52:59,468 INFO L280 TraceCheckUtils]: 1: Hoare triple {2155#true} assume ~n.base == 0 && ~n.offset == 0;#res := 2147483647; {2155#true} is VALID [2020-07-17 22:52:59,468 INFO L280 TraceCheckUtils]: 2: Hoare triple {2155#true} assume true; {2155#true} is VALID [2020-07-17 22:52:59,471 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {2155#true} {2232#(or (not (= 0 |min_#in~n.base|)) (not (= 0 |min_#in~n.offset|)))} #159#return; {2232#(or (not (= 0 |min_#in~n.base|)) (not (= 0 |min_#in~n.offset|)))} is VALID [2020-07-17 22:52:59,473 INFO L280 TraceCheckUtils]: 0: Hoare triple {2155#true} ~n.base, ~n.offset := #in~n.base, #in~n.offset; {2231#(and (= min_~n.base |min_#in~n.base|) (= min_~n.offset |min_#in~n.offset|))} is VALID [2020-07-17 22:52:59,476 INFO L280 TraceCheckUtils]: 1: Hoare triple {2231#(and (= min_~n.base |min_#in~n.base|) (= min_~n.offset |min_#in~n.offset|))} assume !(~n.base == 0 && ~n.offset == 0);call #t~mem6 := read~int(~n.base, ~n.offset, 4);~a~0 := #t~mem6;havoc #t~mem6;call #t~mem7.base, #t~mem7.offset := read~$Pointer$(~n.base, 4 + ~n.offset, 4); {2232#(or (not (= 0 |min_#in~n.base|)) (not (= 0 |min_#in~n.offset|)))} is VALID [2020-07-17 22:52:59,476 INFO L263 TraceCheckUtils]: 2: Hoare triple {2232#(or (not (= 0 |min_#in~n.base|)) (not (= 0 |min_#in~n.offset|)))} call #t~ret8 := min(#t~mem7.base, #t~mem7.offset); {2155#true} is VALID [2020-07-17 22:52:59,477 INFO L280 TraceCheckUtils]: 3: Hoare triple {2155#true} ~n.base, ~n.offset := #in~n.base, #in~n.offset; {2155#true} is VALID [2020-07-17 22:52:59,477 INFO L280 TraceCheckUtils]: 4: Hoare triple {2155#true} assume ~n.base == 0 && ~n.offset == 0;#res := 2147483647; {2155#true} is VALID [2020-07-17 22:52:59,477 INFO L280 TraceCheckUtils]: 5: Hoare triple {2155#true} assume true; {2155#true} is VALID [2020-07-17 22:52:59,479 INFO L275 TraceCheckUtils]: 6: Hoare quadruple {2155#true} {2232#(or (not (= 0 |min_#in~n.base|)) (not (= 0 |min_#in~n.offset|)))} #157#return; {2232#(or (not (= 0 |min_#in~n.base|)) (not (= 0 |min_#in~n.offset|)))} is VALID [2020-07-17 22:52:59,482 INFO L280 TraceCheckUtils]: 7: Hoare triple {2232#(or (not (= 0 |min_#in~n.base|)) (not (= 0 |min_#in~n.offset|)))} assume -2147483648 <= #t~ret8 && #t~ret8 <= 2147483647;~b~0 := #t~ret8;havoc #t~mem7.base, #t~mem7.offset;havoc #t~ret8;call #t~mem9.base, #t~mem9.offset := read~$Pointer$(~n.base, 8 + ~n.offset, 4); {2232#(or (not (= 0 |min_#in~n.base|)) (not (= 0 |min_#in~n.offset|)))} is VALID [2020-07-17 22:52:59,482 INFO L263 TraceCheckUtils]: 8: Hoare triple {2232#(or (not (= 0 |min_#in~n.base|)) (not (= 0 |min_#in~n.offset|)))} call #t~ret10 := min(#t~mem9.base, #t~mem9.offset); {2155#true} is VALID [2020-07-17 22:52:59,483 INFO L280 TraceCheckUtils]: 9: Hoare triple {2155#true} ~n.base, ~n.offset := #in~n.base, #in~n.offset; {2155#true} is VALID [2020-07-17 22:52:59,483 INFO L280 TraceCheckUtils]: 10: Hoare triple {2155#true} assume ~n.base == 0 && ~n.offset == 0;#res := 2147483647; {2155#true} is VALID [2020-07-17 22:52:59,483 INFO L280 TraceCheckUtils]: 11: Hoare triple {2155#true} assume true; {2155#true} is VALID [2020-07-17 22:52:59,485 INFO L275 TraceCheckUtils]: 12: Hoare quadruple {2155#true} {2232#(or (not (= 0 |min_#in~n.base|)) (not (= 0 |min_#in~n.offset|)))} #159#return; {2232#(or (not (= 0 |min_#in~n.base|)) (not (= 0 |min_#in~n.offset|)))} is VALID [2020-07-17 22:52:59,487 INFO L280 TraceCheckUtils]: 13: Hoare triple {2232#(or (not (= 0 |min_#in~n.base|)) (not (= 0 |min_#in~n.offset|)))} assume -2147483648 <= #t~ret10 && #t~ret10 <= 2147483647;~c~0 := #t~ret10;havoc #t~ret10;havoc #t~mem9.base, #t~mem9.offset; {2232#(or (not (= 0 |min_#in~n.base|)) (not (= 0 |min_#in~n.offset|)))} is VALID [2020-07-17 22:52:59,489 INFO L280 TraceCheckUtils]: 14: Hoare triple {2232#(or (not (= 0 |min_#in~n.base|)) (not (= 0 |min_#in~n.offset|)))} assume ~b~0 <= ~a~0 && ~b~0 <= ~c~0;#res := ~b~0; {2232#(or (not (= 0 |min_#in~n.base|)) (not (= 0 |min_#in~n.offset|)))} is VALID [2020-07-17 22:52:59,490 INFO L280 TraceCheckUtils]: 15: Hoare triple {2232#(or (not (= 0 |min_#in~n.base|)) (not (= 0 |min_#in~n.offset|)))} assume true; {2232#(or (not (= 0 |min_#in~n.base|)) (not (= 0 |min_#in~n.offset|)))} is VALID [2020-07-17 22:52:59,492 INFO L275 TraceCheckUtils]: 16: Hoare quadruple {2232#(or (not (= 0 |min_#in~n.base|)) (not (= 0 |min_#in~n.offset|)))} {2175#(= 0 task_~t.offset)} #165#return; {2193#(not (= 0 task_~t.base))} is VALID [2020-07-17 22:52:59,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:52:59,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:52:59,516 INFO L280 TraceCheckUtils]: 0: Hoare triple {2155#true} ~t.base, ~t.offset := #in~t.base, #in~t.offset; {2155#true} is VALID [2020-07-17 22:52:59,516 INFO L280 TraceCheckUtils]: 1: Hoare triple {2155#true} assume ~t.base == 0 && ~t.offset == 0;#res := 0; {2155#true} is VALID [2020-07-17 22:52:59,517 INFO L280 TraceCheckUtils]: 2: Hoare triple {2155#true} assume true; {2155#true} is VALID [2020-07-17 22:52:59,517 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {2155#true} {2155#true} #191#return; {2155#true} is VALID [2020-07-17 22:52:59,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:52:59,521 INFO L280 TraceCheckUtils]: 0: Hoare triple {2155#true} ~t.base, ~t.offset := #in~t.base, #in~t.offset; {2155#true} is VALID [2020-07-17 22:52:59,521 INFO L280 TraceCheckUtils]: 1: Hoare triple {2155#true} assume ~t.base == 0 && ~t.offset == 0;#res := 0; {2155#true} is VALID [2020-07-17 22:52:59,521 INFO L280 TraceCheckUtils]: 2: Hoare triple {2155#true} assume true; {2155#true} is VALID [2020-07-17 22:52:59,522 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {2155#true} {2155#true} #193#return; {2155#true} is VALID [2020-07-17 22:52:59,522 INFO L280 TraceCheckUtils]: 0: Hoare triple {2155#true} ~t.base, ~t.offset := #in~t.base, #in~t.offset; {2155#true} is VALID [2020-07-17 22:52:59,522 INFO L280 TraceCheckUtils]: 1: Hoare triple {2155#true} assume !(~t.base == 0 && ~t.offset == 0);call #t~mem24.base, #t~mem24.offset := read~$Pointer$(~t.base, 4 + ~t.offset, 4); {2155#true} is VALID [2020-07-17 22:52:59,522 INFO L263 TraceCheckUtils]: 2: Hoare triple {2155#true} call #t~ret25 := size(#t~mem24.base, #t~mem24.offset); {2155#true} is VALID [2020-07-17 22:52:59,523 INFO L280 TraceCheckUtils]: 3: Hoare triple {2155#true} ~t.base, ~t.offset := #in~t.base, #in~t.offset; {2155#true} is VALID [2020-07-17 22:52:59,523 INFO L280 TraceCheckUtils]: 4: Hoare triple {2155#true} assume ~t.base == 0 && ~t.offset == 0;#res := 0; {2155#true} is VALID [2020-07-17 22:52:59,523 INFO L280 TraceCheckUtils]: 5: Hoare triple {2155#true} assume true; {2155#true} is VALID [2020-07-17 22:52:59,524 INFO L275 TraceCheckUtils]: 6: Hoare quadruple {2155#true} {2155#true} #191#return; {2155#true} is VALID [2020-07-17 22:52:59,524 INFO L280 TraceCheckUtils]: 7: Hoare triple {2155#true} assume -2147483648 <= #t~ret25 && #t~ret25 <= 2147483647;call #t~mem26.base, #t~mem26.offset := read~$Pointer$(~t.base, 8 + ~t.offset, 4); {2155#true} is VALID [2020-07-17 22:52:59,524 INFO L263 TraceCheckUtils]: 8: Hoare triple {2155#true} call #t~ret27 := size(#t~mem26.base, #t~mem26.offset); {2155#true} is VALID [2020-07-17 22:52:59,525 INFO L280 TraceCheckUtils]: 9: Hoare triple {2155#true} ~t.base, ~t.offset := #in~t.base, #in~t.offset; {2155#true} is VALID [2020-07-17 22:52:59,525 INFO L280 TraceCheckUtils]: 10: Hoare triple {2155#true} assume ~t.base == 0 && ~t.offset == 0;#res := 0; {2155#true} is VALID [2020-07-17 22:52:59,525 INFO L280 TraceCheckUtils]: 11: Hoare triple {2155#true} assume true; {2155#true} is VALID [2020-07-17 22:52:59,525 INFO L275 TraceCheckUtils]: 12: Hoare quadruple {2155#true} {2155#true} #193#return; {2155#true} is VALID [2020-07-17 22:52:59,526 INFO L280 TraceCheckUtils]: 13: Hoare triple {2155#true} assume -2147483648 <= #t~ret27 && #t~ret27 <= 2147483647;#res := 1 + (#t~ret25 + #t~ret27);havoc #t~ret25;havoc #t~ret27;havoc #t~mem24.base, #t~mem24.offset;havoc #t~mem26.base, #t~mem26.offset; {2155#true} is VALID [2020-07-17 22:52:59,526 INFO L280 TraceCheckUtils]: 14: Hoare triple {2155#true} assume true; {2155#true} is VALID [2020-07-17 22:52:59,527 INFO L275 TraceCheckUtils]: 15: Hoare quadruple {2155#true} {2193#(not (= 0 task_~t.base))} #167#return; {2193#(not (= 0 task_~t.base))} is VALID [2020-07-17 22:52:59,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:52:59,532 INFO L280 TraceCheckUtils]: 0: Hoare triple {2155#true} ~cond := #in~cond; {2155#true} is VALID [2020-07-17 22:52:59,533 INFO L280 TraceCheckUtils]: 1: Hoare triple {2155#true} assume !(0 == ~cond); {2155#true} is VALID [2020-07-17 22:52:59,534 INFO L280 TraceCheckUtils]: 2: Hoare triple {2155#true} assume true; {2155#true} is VALID [2020-07-17 22:52:59,535 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {2155#true} {2193#(not (= 0 task_~t.base))} #169#return; {2193#(not (= 0 task_~t.base))} is VALID [2020-07-17 22:52:59,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:52:59,561 INFO L280 TraceCheckUtils]: 0: Hoare triple {2249#(= |#memory_int| |old(#memory_int)|)} #memory_int := ~initToZeroAtPointerBaseAddress~int(#memory_int, #ptr.base); {2155#true} is VALID [2020-07-17 22:52:59,561 INFO L280 TraceCheckUtils]: 1: Hoare triple {2155#true} assume true; {2155#true} is VALID [2020-07-17 22:52:59,564 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {2155#true} {2193#(not (= 0 task_~t.base))} #171#return; {2193#(not (= 0 task_~t.base))} is VALID [2020-07-17 22:52:59,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:52:59,656 INFO L280 TraceCheckUtils]: 0: Hoare triple {2250#(and (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} ~t.base, ~t.offset := #in~t.base, #in~t.offset;~a.base, ~a.offset := #in~a.base, #in~a.offset;~i := #in~i; {2251#(= |tree_inorder_#in~t.base| tree_inorder_~t.base)} is VALID [2020-07-17 22:52:59,658 INFO L280 TraceCheckUtils]: 1: Hoare triple {2251#(= |tree_inorder_#in~t.base| tree_inorder_~t.base)} assume ~t.base == 0 && ~t.offset == 0;#res := ~i; {2252#(= 0 |tree_inorder_#in~t.base|)} is VALID [2020-07-17 22:52:59,660 INFO L280 TraceCheckUtils]: 2: Hoare triple {2252#(= 0 |tree_inorder_#in~t.base|)} assume true; {2252#(= 0 |tree_inorder_#in~t.base|)} is VALID [2020-07-17 22:52:59,662 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {2252#(= 0 |tree_inorder_#in~t.base|)} {2193#(not (= 0 task_~t.base))} #173#return; {2156#false} is VALID [2020-07-17 22:52:59,663 INFO L263 TraceCheckUtils]: 0: Hoare triple {2155#true} call ULTIMATE.init(); {2221#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-17 22:52:59,663 INFO L280 TraceCheckUtils]: 1: Hoare triple {2221#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {2155#true} is VALID [2020-07-17 22:52:59,664 INFO L280 TraceCheckUtils]: 2: Hoare triple {2155#true} assume true; {2155#true} is VALID [2020-07-17 22:52:59,664 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {2155#true} {2155#true} #195#return; {2155#true} is VALID [2020-07-17 22:52:59,664 INFO L263 TraceCheckUtils]: 4: Hoare triple {2155#true} call #t~ret42 := main(); {2155#true} is VALID [2020-07-17 22:52:59,665 INFO L263 TraceCheckUtils]: 5: Hoare triple {2155#true} call #t~ret41.base, #t~ret41.offset := nondet_tree(); {2222#(and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} is VALID [2020-07-17 22:52:59,667 INFO L280 TraceCheckUtils]: 6: Hoare triple {2222#(and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} assume !(0 != #t~nondet1 % 256);havoc #t~nondet1;call #t~malloc2.base, #t~malloc2.offset := #Ultimate.allocOnHeap(12);~n~0.base, ~n~0.offset := #t~malloc2.base, #t~malloc2.offset;assume -2147483648 <= #t~nondet3 && #t~nondet3 <= 2147483647;call write~int(#t~nondet3, ~n~0.base, ~n~0.offset, 4);havoc #t~nondet3; {2223#(= nondet_tree_~n~0.offset 0)} is VALID [2020-07-17 22:52:59,669 INFO L263 TraceCheckUtils]: 7: Hoare triple {2223#(= nondet_tree_~n~0.offset 0)} call #t~ret4.base, #t~ret4.offset := nondet_tree(); {2222#(and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} is VALID [2020-07-17 22:52:59,669 INFO L280 TraceCheckUtils]: 8: Hoare triple {2222#(and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} assume 0 != #t~nondet1 % 256;havoc #t~nondet1;#res.base, #res.offset := 0, 0; {2155#true} is VALID [2020-07-17 22:52:59,669 INFO L280 TraceCheckUtils]: 9: Hoare triple {2155#true} assume true; {2155#true} is VALID [2020-07-17 22:52:59,671 INFO L275 TraceCheckUtils]: 10: Hoare quadruple {2155#true} {2223#(= nondet_tree_~n~0.offset 0)} #161#return; {2223#(= nondet_tree_~n~0.offset 0)} is VALID [2020-07-17 22:52:59,673 INFO L280 TraceCheckUtils]: 11: Hoare triple {2223#(= nondet_tree_~n~0.offset 0)} call write~$Pointer$(#t~ret4.base, #t~ret4.offset, ~n~0.base, 4 + ~n~0.offset, 4);havoc #t~ret4.base, #t~ret4.offset; {2223#(= nondet_tree_~n~0.offset 0)} is VALID [2020-07-17 22:52:59,675 INFO L263 TraceCheckUtils]: 12: Hoare triple {2223#(= nondet_tree_~n~0.offset 0)} call #t~ret5.base, #t~ret5.offset := nondet_tree(); {2222#(and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} is VALID [2020-07-17 22:52:59,675 INFO L280 TraceCheckUtils]: 13: Hoare triple {2222#(and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} assume 0 != #t~nondet1 % 256;havoc #t~nondet1;#res.base, #res.offset := 0, 0; {2155#true} is VALID [2020-07-17 22:52:59,676 INFO L280 TraceCheckUtils]: 14: Hoare triple {2155#true} assume true; {2155#true} is VALID [2020-07-17 22:52:59,676 INFO L275 TraceCheckUtils]: 15: Hoare quadruple {2155#true} {2223#(= nondet_tree_~n~0.offset 0)} #163#return; {2223#(= nondet_tree_~n~0.offset 0)} is VALID [2020-07-17 22:52:59,678 INFO L280 TraceCheckUtils]: 16: Hoare triple {2223#(= nondet_tree_~n~0.offset 0)} call write~$Pointer$(#t~ret5.base, #t~ret5.offset, ~n~0.base, 8 + ~n~0.offset, 4);havoc #t~ret5.base, #t~ret5.offset;#res.base, #res.offset := ~n~0.base, ~n~0.offset; {2230#(and (<= 0 |nondet_tree_#res.offset|) (<= |nondet_tree_#res.offset| 0))} is VALID [2020-07-17 22:52:59,680 INFO L280 TraceCheckUtils]: 17: Hoare triple {2230#(and (<= 0 |nondet_tree_#res.offset|) (<= |nondet_tree_#res.offset| 0))} assume true; {2230#(and (<= 0 |nondet_tree_#res.offset|) (<= |nondet_tree_#res.offset| 0))} is VALID [2020-07-17 22:52:59,682 INFO L275 TraceCheckUtils]: 18: Hoare quadruple {2230#(and (<= 0 |nondet_tree_#res.offset|) (<= |nondet_tree_#res.offset| 0))} {2155#true} #153#return; {2173#(= 0 |main_#t~ret41.offset|)} is VALID [2020-07-17 22:52:59,685 INFO L263 TraceCheckUtils]: 19: Hoare triple {2173#(= 0 |main_#t~ret41.offset|)} call task(#t~ret41.base, #t~ret41.offset); {2174#(= 0 |task_#in~t.offset|)} is VALID [2020-07-17 22:52:59,686 INFO L280 TraceCheckUtils]: 20: Hoare triple {2174#(= 0 |task_#in~t.offset|)} ~t.base, ~t.offset := #in~t.base, #in~t.offset; {2175#(= 0 task_~t.offset)} is VALID [2020-07-17 22:52:59,687 INFO L263 TraceCheckUtils]: 21: Hoare triple {2175#(= 0 task_~t.offset)} call #t~ret28 := min(~t.base, ~t.offset); {2155#true} is VALID [2020-07-17 22:52:59,688 INFO L280 TraceCheckUtils]: 22: Hoare triple {2155#true} ~n.base, ~n.offset := #in~n.base, #in~n.offset; {2231#(and (= min_~n.base |min_#in~n.base|) (= min_~n.offset |min_#in~n.offset|))} is VALID [2020-07-17 22:52:59,689 INFO L280 TraceCheckUtils]: 23: Hoare triple {2231#(and (= min_~n.base |min_#in~n.base|) (= min_~n.offset |min_#in~n.offset|))} assume !(~n.base == 0 && ~n.offset == 0);call #t~mem6 := read~int(~n.base, ~n.offset, 4);~a~0 := #t~mem6;havoc #t~mem6;call #t~mem7.base, #t~mem7.offset := read~$Pointer$(~n.base, 4 + ~n.offset, 4); {2232#(or (not (= 0 |min_#in~n.base|)) (not (= 0 |min_#in~n.offset|)))} is VALID [2020-07-17 22:52:59,690 INFO L263 TraceCheckUtils]: 24: Hoare triple {2232#(or (not (= 0 |min_#in~n.base|)) (not (= 0 |min_#in~n.offset|)))} call #t~ret8 := min(#t~mem7.base, #t~mem7.offset); {2155#true} is VALID [2020-07-17 22:52:59,690 INFO L280 TraceCheckUtils]: 25: Hoare triple {2155#true} ~n.base, ~n.offset := #in~n.base, #in~n.offset; {2155#true} is VALID [2020-07-17 22:52:59,691 INFO L280 TraceCheckUtils]: 26: Hoare triple {2155#true} assume ~n.base == 0 && ~n.offset == 0;#res := 2147483647; {2155#true} is VALID [2020-07-17 22:52:59,691 INFO L280 TraceCheckUtils]: 27: Hoare triple {2155#true} assume true; {2155#true} is VALID [2020-07-17 22:52:59,693 INFO L275 TraceCheckUtils]: 28: Hoare quadruple {2155#true} {2232#(or (not (= 0 |min_#in~n.base|)) (not (= 0 |min_#in~n.offset|)))} #157#return; {2232#(or (not (= 0 |min_#in~n.base|)) (not (= 0 |min_#in~n.offset|)))} is VALID [2020-07-17 22:52:59,694 INFO L280 TraceCheckUtils]: 29: Hoare triple {2232#(or (not (= 0 |min_#in~n.base|)) (not (= 0 |min_#in~n.offset|)))} assume -2147483648 <= #t~ret8 && #t~ret8 <= 2147483647;~b~0 := #t~ret8;havoc #t~mem7.base, #t~mem7.offset;havoc #t~ret8;call #t~mem9.base, #t~mem9.offset := read~$Pointer$(~n.base, 8 + ~n.offset, 4); {2232#(or (not (= 0 |min_#in~n.base|)) (not (= 0 |min_#in~n.offset|)))} is VALID [2020-07-17 22:52:59,695 INFO L263 TraceCheckUtils]: 30: Hoare triple {2232#(or (not (= 0 |min_#in~n.base|)) (not (= 0 |min_#in~n.offset|)))} call #t~ret10 := min(#t~mem9.base, #t~mem9.offset); {2155#true} is VALID [2020-07-17 22:52:59,695 INFO L280 TraceCheckUtils]: 31: Hoare triple {2155#true} ~n.base, ~n.offset := #in~n.base, #in~n.offset; {2155#true} is VALID [2020-07-17 22:52:59,696 INFO L280 TraceCheckUtils]: 32: Hoare triple {2155#true} assume ~n.base == 0 && ~n.offset == 0;#res := 2147483647; {2155#true} is VALID [2020-07-17 22:52:59,696 INFO L280 TraceCheckUtils]: 33: Hoare triple {2155#true} assume true; {2155#true} is VALID [2020-07-17 22:52:59,698 INFO L275 TraceCheckUtils]: 34: Hoare quadruple {2155#true} {2232#(or (not (= 0 |min_#in~n.base|)) (not (= 0 |min_#in~n.offset|)))} #159#return; {2232#(or (not (= 0 |min_#in~n.base|)) (not (= 0 |min_#in~n.offset|)))} is VALID [2020-07-17 22:52:59,699 INFO L280 TraceCheckUtils]: 35: Hoare triple {2232#(or (not (= 0 |min_#in~n.base|)) (not (= 0 |min_#in~n.offset|)))} assume -2147483648 <= #t~ret10 && #t~ret10 <= 2147483647;~c~0 := #t~ret10;havoc #t~ret10;havoc #t~mem9.base, #t~mem9.offset; {2232#(or (not (= 0 |min_#in~n.base|)) (not (= 0 |min_#in~n.offset|)))} is VALID [2020-07-17 22:52:59,699 INFO L280 TraceCheckUtils]: 36: Hoare triple {2232#(or (not (= 0 |min_#in~n.base|)) (not (= 0 |min_#in~n.offset|)))} assume ~b~0 <= ~a~0 && ~b~0 <= ~c~0;#res := ~b~0; {2232#(or (not (= 0 |min_#in~n.base|)) (not (= 0 |min_#in~n.offset|)))} is VALID [2020-07-17 22:52:59,700 INFO L280 TraceCheckUtils]: 37: Hoare triple {2232#(or (not (= 0 |min_#in~n.base|)) (not (= 0 |min_#in~n.offset|)))} assume true; {2232#(or (not (= 0 |min_#in~n.base|)) (not (= 0 |min_#in~n.offset|)))} is VALID [2020-07-17 22:52:59,702 INFO L275 TraceCheckUtils]: 38: Hoare quadruple {2232#(or (not (= 0 |min_#in~n.base|)) (not (= 0 |min_#in~n.offset|)))} {2175#(= 0 task_~t.offset)} #165#return; {2193#(not (= 0 task_~t.base))} is VALID [2020-07-17 22:52:59,704 INFO L280 TraceCheckUtils]: 39: Hoare triple {2193#(not (= 0 task_~t.base))} assume -2147483648 <= #t~ret28 && #t~ret28 <= 2147483647;~a~1 := #t~ret28;havoc #t~ret28;call ~#b~1.base, ~#b~1.offset := #Ultimate.allocOnStack(4); {2193#(not (= 0 task_~t.base))} is VALID [2020-07-17 22:52:59,705 INFO L263 TraceCheckUtils]: 40: Hoare triple {2193#(not (= 0 task_~t.base))} call #t~ret29 := size(~t.base, ~t.offset); {2155#true} is VALID [2020-07-17 22:52:59,705 INFO L280 TraceCheckUtils]: 41: Hoare triple {2155#true} ~t.base, ~t.offset := #in~t.base, #in~t.offset; {2155#true} is VALID [2020-07-17 22:52:59,706 INFO L280 TraceCheckUtils]: 42: Hoare triple {2155#true} assume !(~t.base == 0 && ~t.offset == 0);call #t~mem24.base, #t~mem24.offset := read~$Pointer$(~t.base, 4 + ~t.offset, 4); {2155#true} is VALID [2020-07-17 22:52:59,706 INFO L263 TraceCheckUtils]: 43: Hoare triple {2155#true} call #t~ret25 := size(#t~mem24.base, #t~mem24.offset); {2155#true} is VALID [2020-07-17 22:52:59,706 INFO L280 TraceCheckUtils]: 44: Hoare triple {2155#true} ~t.base, ~t.offset := #in~t.base, #in~t.offset; {2155#true} is VALID [2020-07-17 22:52:59,707 INFO L280 TraceCheckUtils]: 45: Hoare triple {2155#true} assume ~t.base == 0 && ~t.offset == 0;#res := 0; {2155#true} is VALID [2020-07-17 22:52:59,707 INFO L280 TraceCheckUtils]: 46: Hoare triple {2155#true} assume true; {2155#true} is VALID [2020-07-17 22:52:59,707 INFO L275 TraceCheckUtils]: 47: Hoare quadruple {2155#true} {2155#true} #191#return; {2155#true} is VALID [2020-07-17 22:52:59,707 INFO L280 TraceCheckUtils]: 48: Hoare triple {2155#true} assume -2147483648 <= #t~ret25 && #t~ret25 <= 2147483647;call #t~mem26.base, #t~mem26.offset := read~$Pointer$(~t.base, 8 + ~t.offset, 4); {2155#true} is VALID [2020-07-17 22:52:59,708 INFO L263 TraceCheckUtils]: 49: Hoare triple {2155#true} call #t~ret27 := size(#t~mem26.base, #t~mem26.offset); {2155#true} is VALID [2020-07-17 22:52:59,708 INFO L280 TraceCheckUtils]: 50: Hoare triple {2155#true} ~t.base, ~t.offset := #in~t.base, #in~t.offset; {2155#true} is VALID [2020-07-17 22:52:59,708 INFO L280 TraceCheckUtils]: 51: Hoare triple {2155#true} assume ~t.base == 0 && ~t.offset == 0;#res := 0; {2155#true} is VALID [2020-07-17 22:52:59,709 INFO L280 TraceCheckUtils]: 52: Hoare triple {2155#true} assume true; {2155#true} is VALID [2020-07-17 22:52:59,709 INFO L275 TraceCheckUtils]: 53: Hoare quadruple {2155#true} {2155#true} #193#return; {2155#true} is VALID [2020-07-17 22:52:59,709 INFO L280 TraceCheckUtils]: 54: Hoare triple {2155#true} assume -2147483648 <= #t~ret27 && #t~ret27 <= 2147483647;#res := 1 + (#t~ret25 + #t~ret27);havoc #t~ret25;havoc #t~ret27;havoc #t~mem24.base, #t~mem24.offset;havoc #t~mem26.base, #t~mem26.offset; {2155#true} is VALID [2020-07-17 22:52:59,710 INFO L280 TraceCheckUtils]: 55: Hoare triple {2155#true} assume true; {2155#true} is VALID [2020-07-17 22:52:59,712 INFO L275 TraceCheckUtils]: 56: Hoare quadruple {2155#true} {2193#(not (= 0 task_~t.base))} #167#return; {2193#(not (= 0 task_~t.base))} is VALID [2020-07-17 22:52:59,713 INFO L280 TraceCheckUtils]: 57: Hoare triple {2193#(not (= 0 task_~t.base))} assume -2147483648 <= #t~ret29 && #t~ret29 <= 2147483647;~n~1 := #t~ret29;havoc #t~ret29; {2193#(not (= 0 task_~t.base))} is VALID [2020-07-17 22:52:59,713 INFO L263 TraceCheckUtils]: 58: Hoare triple {2193#(not (= 0 task_~t.base))} call assume_cycle_if_not((if 0 != ~n~1 then 1 else 0)); {2155#true} is VALID [2020-07-17 22:52:59,714 INFO L280 TraceCheckUtils]: 59: Hoare triple {2155#true} ~cond := #in~cond; {2155#true} is VALID [2020-07-17 22:52:59,714 INFO L280 TraceCheckUtils]: 60: Hoare triple {2155#true} assume !(0 == ~cond); {2155#true} is VALID [2020-07-17 22:52:59,714 INFO L280 TraceCheckUtils]: 61: Hoare triple {2155#true} assume true; {2155#true} is VALID [2020-07-17 22:52:59,715 INFO L275 TraceCheckUtils]: 62: Hoare quadruple {2155#true} {2193#(not (= 0 task_~t.base))} #169#return; {2193#(not (= 0 task_~t.base))} is VALID [2020-07-17 22:52:59,715 INFO L280 TraceCheckUtils]: 63: Hoare triple {2193#(not (= 0 task_~t.base))} call #t~malloc30.base, #t~malloc30.offset := #Ultimate.allocOnHeap(4 * ~n~1); {2193#(not (= 0 task_~t.base))} is VALID [2020-07-17 22:52:59,717 INFO L263 TraceCheckUtils]: 64: Hoare triple {2193#(not (= 0 task_~t.base))} call #Ultimate.meminit(#t~malloc30.base, #t~malloc30.offset, ~n~1, 4, 4 * ~n~1); {2249#(= |#memory_int| |old(#memory_int)|)} is VALID [2020-07-17 22:52:59,717 INFO L280 TraceCheckUtils]: 65: Hoare triple {2249#(= |#memory_int| |old(#memory_int)|)} #memory_int := ~initToZeroAtPointerBaseAddress~int(#memory_int, #ptr.base); {2155#true} is VALID [2020-07-17 22:52:59,717 INFO L280 TraceCheckUtils]: 66: Hoare triple {2155#true} assume true; {2155#true} is VALID [2020-07-17 22:52:59,719 INFO L275 TraceCheckUtils]: 67: Hoare quadruple {2155#true} {2193#(not (= 0 task_~t.base))} #171#return; {2193#(not (= 0 task_~t.base))} is VALID [2020-07-17 22:52:59,720 INFO L280 TraceCheckUtils]: 68: Hoare triple {2193#(not (= 0 task_~t.base))} ~x~0.base, ~x~0.offset := #t~malloc30.base, #t~malloc30.offset; {2193#(not (= 0 task_~t.base))} is VALID [2020-07-17 22:52:59,723 INFO L263 TraceCheckUtils]: 69: Hoare triple {2193#(not (= 0 task_~t.base))} call #t~ret31 := tree_inorder(~t.base, ~t.offset, ~x~0.base, ~x~0.offset, ~n~1); {2250#(and (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} is VALID [2020-07-17 22:52:59,725 INFO L280 TraceCheckUtils]: 70: Hoare triple {2250#(and (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))} ~t.base, ~t.offset := #in~t.base, #in~t.offset;~a.base, ~a.offset := #in~a.base, #in~a.offset;~i := #in~i; {2251#(= |tree_inorder_#in~t.base| tree_inorder_~t.base)} is VALID [2020-07-17 22:52:59,727 INFO L280 TraceCheckUtils]: 71: Hoare triple {2251#(= |tree_inorder_#in~t.base| tree_inorder_~t.base)} assume ~t.base == 0 && ~t.offset == 0;#res := ~i; {2252#(= 0 |tree_inorder_#in~t.base|)} is VALID [2020-07-17 22:52:59,729 INFO L280 TraceCheckUtils]: 72: Hoare triple {2252#(= 0 |tree_inorder_#in~t.base|)} assume true; {2252#(= 0 |tree_inorder_#in~t.base|)} is VALID [2020-07-17 22:52:59,732 INFO L275 TraceCheckUtils]: 73: Hoare quadruple {2252#(= 0 |tree_inorder_#in~t.base|)} {2193#(not (= 0 task_~t.base))} #173#return; {2156#false} is VALID [2020-07-17 22:52:59,733 INFO L280 TraceCheckUtils]: 74: Hoare triple {2156#false} assume -2147483648 <= #t~ret31 && #t~ret31 <= 2147483647;havoc #t~ret31;call #t~mem32 := read~int(~x~0.base, ~x~0.offset, 4); {2156#false} is VALID [2020-07-17 22:52:59,733 INFO L263 TraceCheckUtils]: 75: Hoare triple {2156#false} call __VERIFIER_assert((if ~a~1 == #t~mem32 then 1 else 0)); {2156#false} is VALID [2020-07-17 22:52:59,734 INFO L280 TraceCheckUtils]: 76: Hoare triple {2156#false} ~cond := #in~cond; {2156#false} is VALID [2020-07-17 22:52:59,734 INFO L280 TraceCheckUtils]: 77: Hoare triple {2156#false} assume 0 == ~cond; {2156#false} is VALID [2020-07-17 22:52:59,734 INFO L280 TraceCheckUtils]: 78: Hoare triple {2156#false} assume !false; {2156#false} is VALID [2020-07-17 22:52:59,742 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-07-17 22:52:59,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572329582] [2020-07-17 22:52:59,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308424474] [2020-07-17 22:52:59,743 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 22:52:59,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:52:59,872 INFO L264 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 31 conjunts are in the unsatisfiable core [2020-07-17 22:52:59,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:52:59,921 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 22:53:00,130 INFO L263 TraceCheckUtils]: 0: Hoare triple {2155#true} call ULTIMATE.init(); {2155#true} is VALID [2020-07-17 22:53:00,130 INFO L280 TraceCheckUtils]: 1: Hoare triple {2155#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {2155#true} is VALID [2020-07-17 22:53:00,131 INFO L280 TraceCheckUtils]: 2: Hoare triple {2155#true} assume true; {2155#true} is VALID [2020-07-17 22:53:00,131 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {2155#true} {2155#true} #195#return; {2155#true} is VALID [2020-07-17 22:53:00,131 INFO L263 TraceCheckUtils]: 4: Hoare triple {2155#true} call #t~ret42 := main(); {2155#true} is VALID [2020-07-17 22:53:00,131 INFO L263 TraceCheckUtils]: 5: Hoare triple {2155#true} call #t~ret41.base, #t~ret41.offset := nondet_tree(); {2155#true} is VALID [2020-07-17 22:53:00,133 INFO L280 TraceCheckUtils]: 6: Hoare triple {2155#true} assume !(0 != #t~nondet1 % 256);havoc #t~nondet1;call #t~malloc2.base, #t~malloc2.offset := #Ultimate.allocOnHeap(12);~n~0.base, ~n~0.offset := #t~malloc2.base, #t~malloc2.offset;assume -2147483648 <= #t~nondet3 && #t~nondet3 <= 2147483647;call write~int(#t~nondet3, ~n~0.base, ~n~0.offset, 4);havoc #t~nondet3; {2223#(= nondet_tree_~n~0.offset 0)} is VALID [2020-07-17 22:53:00,133 INFO L263 TraceCheckUtils]: 7: Hoare triple {2223#(= nondet_tree_~n~0.offset 0)} call #t~ret4.base, #t~ret4.offset := nondet_tree(); {2155#true} is VALID [2020-07-17 22:53:00,133 INFO L280 TraceCheckUtils]: 8: Hoare triple {2155#true} assume 0 != #t~nondet1 % 256;havoc #t~nondet1;#res.base, #res.offset := 0, 0; {2155#true} is VALID [2020-07-17 22:53:00,133 INFO L280 TraceCheckUtils]: 9: Hoare triple {2155#true} assume true; {2155#true} is VALID [2020-07-17 22:53:00,134 INFO L275 TraceCheckUtils]: 10: Hoare quadruple {2155#true} {2223#(= nondet_tree_~n~0.offset 0)} #161#return; {2223#(= nondet_tree_~n~0.offset 0)} is VALID [2020-07-17 22:53:00,136 INFO L280 TraceCheckUtils]: 11: Hoare triple {2223#(= nondet_tree_~n~0.offset 0)} call write~$Pointer$(#t~ret4.base, #t~ret4.offset, ~n~0.base, 4 + ~n~0.offset, 4);havoc #t~ret4.base, #t~ret4.offset; {2223#(= nondet_tree_~n~0.offset 0)} is VALID [2020-07-17 22:53:00,136 INFO L263 TraceCheckUtils]: 12: Hoare triple {2223#(= nondet_tree_~n~0.offset 0)} call #t~ret5.base, #t~ret5.offset := nondet_tree(); {2155#true} is VALID [2020-07-17 22:53:00,137 INFO L280 TraceCheckUtils]: 13: Hoare triple {2155#true} assume 0 != #t~nondet1 % 256;havoc #t~nondet1;#res.base, #res.offset := 0, 0; {2155#true} is VALID [2020-07-17 22:53:00,137 INFO L280 TraceCheckUtils]: 14: Hoare triple {2155#true} assume true; {2155#true} is VALID [2020-07-17 22:53:00,144 INFO L275 TraceCheckUtils]: 15: Hoare quadruple {2155#true} {2223#(= nondet_tree_~n~0.offset 0)} #163#return; {2223#(= nondet_tree_~n~0.offset 0)} is VALID [2020-07-17 22:53:00,145 INFO L280 TraceCheckUtils]: 16: Hoare triple {2223#(= nondet_tree_~n~0.offset 0)} call write~$Pointer$(#t~ret5.base, #t~ret5.offset, ~n~0.base, 8 + ~n~0.offset, 4);havoc #t~ret5.base, #t~ret5.offset;#res.base, #res.offset := ~n~0.base, ~n~0.offset; {2230#(and (<= 0 |nondet_tree_#res.offset|) (<= |nondet_tree_#res.offset| 0))} is VALID [2020-07-17 22:53:00,146 INFO L280 TraceCheckUtils]: 17: Hoare triple {2230#(and (<= 0 |nondet_tree_#res.offset|) (<= |nondet_tree_#res.offset| 0))} assume true; {2230#(and (<= 0 |nondet_tree_#res.offset|) (<= |nondet_tree_#res.offset| 0))} is VALID [2020-07-17 22:53:00,147 INFO L275 TraceCheckUtils]: 18: Hoare quadruple {2230#(and (<= 0 |nondet_tree_#res.offset|) (<= |nondet_tree_#res.offset| 0))} {2155#true} #153#return; {2173#(= 0 |main_#t~ret41.offset|)} is VALID [2020-07-17 22:53:00,148 INFO L263 TraceCheckUtils]: 19: Hoare triple {2173#(= 0 |main_#t~ret41.offset|)} call task(#t~ret41.base, #t~ret41.offset); {2174#(= 0 |task_#in~t.offset|)} is VALID [2020-07-17 22:53:00,149 INFO L280 TraceCheckUtils]: 20: Hoare triple {2174#(= 0 |task_#in~t.offset|)} ~t.base, ~t.offset := #in~t.base, #in~t.offset; {2175#(= 0 task_~t.offset)} is VALID [2020-07-17 22:53:00,149 INFO L263 TraceCheckUtils]: 21: Hoare triple {2175#(= 0 task_~t.offset)} call #t~ret28 := min(~t.base, ~t.offset); {2155#true} is VALID [2020-07-17 22:53:00,149 INFO L280 TraceCheckUtils]: 22: Hoare triple {2155#true} ~n.base, ~n.offset := #in~n.base, #in~n.offset; {2231#(and (= min_~n.base |min_#in~n.base|) (= min_~n.offset |min_#in~n.offset|))} is VALID [2020-07-17 22:53:00,150 INFO L280 TraceCheckUtils]: 23: Hoare triple {2231#(and (= min_~n.base |min_#in~n.base|) (= min_~n.offset |min_#in~n.offset|))} assume !(~n.base == 0 && ~n.offset == 0);call #t~mem6 := read~int(~n.base, ~n.offset, 4);~a~0 := #t~mem6;havoc #t~mem6;call #t~mem7.base, #t~mem7.offset := read~$Pointer$(~n.base, 4 + ~n.offset, 4); {2232#(or (not (= 0 |min_#in~n.base|)) (not (= 0 |min_#in~n.offset|)))} is VALID [2020-07-17 22:53:00,151 INFO L263 TraceCheckUtils]: 24: Hoare triple {2232#(or (not (= 0 |min_#in~n.base|)) (not (= 0 |min_#in~n.offset|)))} call #t~ret8 := min(#t~mem7.base, #t~mem7.offset); {2155#true} is VALID [2020-07-17 22:53:00,151 INFO L280 TraceCheckUtils]: 25: Hoare triple {2155#true} ~n.base, ~n.offset := #in~n.base, #in~n.offset; {2155#true} is VALID [2020-07-17 22:53:00,152 INFO L280 TraceCheckUtils]: 26: Hoare triple {2155#true} assume ~n.base == 0 && ~n.offset == 0;#res := 2147483647; {2155#true} is VALID [2020-07-17 22:53:00,152 INFO L280 TraceCheckUtils]: 27: Hoare triple {2155#true} assume true; {2155#true} is VALID [2020-07-17 22:53:00,154 INFO L275 TraceCheckUtils]: 28: Hoare quadruple {2155#true} {2232#(or (not (= 0 |min_#in~n.base|)) (not (= 0 |min_#in~n.offset|)))} #157#return; {2232#(or (not (= 0 |min_#in~n.base|)) (not (= 0 |min_#in~n.offset|)))} is VALID [2020-07-17 22:53:00,156 INFO L280 TraceCheckUtils]: 29: Hoare triple {2232#(or (not (= 0 |min_#in~n.base|)) (not (= 0 |min_#in~n.offset|)))} assume -2147483648 <= #t~ret8 && #t~ret8 <= 2147483647;~b~0 := #t~ret8;havoc #t~mem7.base, #t~mem7.offset;havoc #t~ret8;call #t~mem9.base, #t~mem9.offset := read~$Pointer$(~n.base, 8 + ~n.offset, 4); {2232#(or (not (= 0 |min_#in~n.base|)) (not (= 0 |min_#in~n.offset|)))} is VALID [2020-07-17 22:53:00,156 INFO L263 TraceCheckUtils]: 30: Hoare triple {2232#(or (not (= 0 |min_#in~n.base|)) (not (= 0 |min_#in~n.offset|)))} call #t~ret10 := min(#t~mem9.base, #t~mem9.offset); {2155#true} is VALID [2020-07-17 22:53:00,156 INFO L280 TraceCheckUtils]: 31: Hoare triple {2155#true} ~n.base, ~n.offset := #in~n.base, #in~n.offset; {2155#true} is VALID [2020-07-17 22:53:00,156 INFO L280 TraceCheckUtils]: 32: Hoare triple {2155#true} assume ~n.base == 0 && ~n.offset == 0;#res := 2147483647; {2155#true} is VALID [2020-07-17 22:53:00,157 INFO L280 TraceCheckUtils]: 33: Hoare triple {2155#true} assume true; {2155#true} is VALID [2020-07-17 22:53:00,161 INFO L275 TraceCheckUtils]: 34: Hoare quadruple {2155#true} {2232#(or (not (= 0 |min_#in~n.base|)) (not (= 0 |min_#in~n.offset|)))} #159#return; {2232#(or (not (= 0 |min_#in~n.base|)) (not (= 0 |min_#in~n.offset|)))} is VALID [2020-07-17 22:53:00,162 INFO L280 TraceCheckUtils]: 35: Hoare triple {2232#(or (not (= 0 |min_#in~n.base|)) (not (= 0 |min_#in~n.offset|)))} assume -2147483648 <= #t~ret10 && #t~ret10 <= 2147483647;~c~0 := #t~ret10;havoc #t~ret10;havoc #t~mem9.base, #t~mem9.offset; {2232#(or (not (= 0 |min_#in~n.base|)) (not (= 0 |min_#in~n.offset|)))} is VALID [2020-07-17 22:53:00,163 INFO L280 TraceCheckUtils]: 36: Hoare triple {2232#(or (not (= 0 |min_#in~n.base|)) (not (= 0 |min_#in~n.offset|)))} assume ~b~0 <= ~a~0 && ~b~0 <= ~c~0;#res := ~b~0; {2232#(or (not (= 0 |min_#in~n.base|)) (not (= 0 |min_#in~n.offset|)))} is VALID [2020-07-17 22:53:00,163 INFO L280 TraceCheckUtils]: 37: Hoare triple {2232#(or (not (= 0 |min_#in~n.base|)) (not (= 0 |min_#in~n.offset|)))} assume true; {2232#(or (not (= 0 |min_#in~n.base|)) (not (= 0 |min_#in~n.offset|)))} is VALID [2020-07-17 22:53:00,165 INFO L275 TraceCheckUtils]: 38: Hoare quadruple {2232#(or (not (= 0 |min_#in~n.base|)) (not (= 0 |min_#in~n.offset|)))} {2175#(= 0 task_~t.offset)} #165#return; {2370#(and (not (= 0 task_~t.base)) (= 0 task_~t.offset))} is VALID [2020-07-17 22:53:00,167 INFO L280 TraceCheckUtils]: 39: Hoare triple {2370#(and (not (= 0 task_~t.base)) (= 0 task_~t.offset))} assume -2147483648 <= #t~ret28 && #t~ret28 <= 2147483647;~a~1 := #t~ret28;havoc #t~ret28;call ~#b~1.base, ~#b~1.offset := #Ultimate.allocOnStack(4); {2370#(and (not (= 0 task_~t.base)) (= 0 task_~t.offset))} is VALID [2020-07-17 22:53:00,168 INFO L263 TraceCheckUtils]: 40: Hoare triple {2370#(and (not (= 0 task_~t.base)) (= 0 task_~t.offset))} call #t~ret29 := size(~t.base, ~t.offset); {2155#true} is VALID [2020-07-17 22:53:00,168 INFO L280 TraceCheckUtils]: 41: Hoare triple {2155#true} ~t.base, ~t.offset := #in~t.base, #in~t.offset; {2155#true} is VALID [2020-07-17 22:53:00,168 INFO L280 TraceCheckUtils]: 42: Hoare triple {2155#true} assume !(~t.base == 0 && ~t.offset == 0);call #t~mem24.base, #t~mem24.offset := read~$Pointer$(~t.base, 4 + ~t.offset, 4); {2155#true} is VALID [2020-07-17 22:53:00,169 INFO L263 TraceCheckUtils]: 43: Hoare triple {2155#true} call #t~ret25 := size(#t~mem24.base, #t~mem24.offset); {2155#true} is VALID [2020-07-17 22:53:00,169 INFO L280 TraceCheckUtils]: 44: Hoare triple {2155#true} ~t.base, ~t.offset := #in~t.base, #in~t.offset; {2155#true} is VALID [2020-07-17 22:53:00,169 INFO L280 TraceCheckUtils]: 45: Hoare triple {2155#true} assume ~t.base == 0 && ~t.offset == 0;#res := 0; {2155#true} is VALID [2020-07-17 22:53:00,169 INFO L280 TraceCheckUtils]: 46: Hoare triple {2155#true} assume true; {2155#true} is VALID [2020-07-17 22:53:00,169 INFO L275 TraceCheckUtils]: 47: Hoare quadruple {2155#true} {2155#true} #191#return; {2155#true} is VALID [2020-07-17 22:53:00,170 INFO L280 TraceCheckUtils]: 48: Hoare triple {2155#true} assume -2147483648 <= #t~ret25 && #t~ret25 <= 2147483647;call #t~mem26.base, #t~mem26.offset := read~$Pointer$(~t.base, 8 + ~t.offset, 4); {2155#true} is VALID [2020-07-17 22:53:00,170 INFO L263 TraceCheckUtils]: 49: Hoare triple {2155#true} call #t~ret27 := size(#t~mem26.base, #t~mem26.offset); {2155#true} is VALID [2020-07-17 22:53:00,170 INFO L280 TraceCheckUtils]: 50: Hoare triple {2155#true} ~t.base, ~t.offset := #in~t.base, #in~t.offset; {2155#true} is VALID [2020-07-17 22:53:00,170 INFO L280 TraceCheckUtils]: 51: Hoare triple {2155#true} assume ~t.base == 0 && ~t.offset == 0;#res := 0; {2155#true} is VALID [2020-07-17 22:53:00,170 INFO L280 TraceCheckUtils]: 52: Hoare triple {2155#true} assume true; {2155#true} is VALID [2020-07-17 22:53:00,171 INFO L275 TraceCheckUtils]: 53: Hoare quadruple {2155#true} {2155#true} #193#return; {2155#true} is VALID [2020-07-17 22:53:00,171 INFO L280 TraceCheckUtils]: 54: Hoare triple {2155#true} assume -2147483648 <= #t~ret27 && #t~ret27 <= 2147483647;#res := 1 + (#t~ret25 + #t~ret27);havoc #t~ret25;havoc #t~ret27;havoc #t~mem24.base, #t~mem24.offset;havoc #t~mem26.base, #t~mem26.offset; {2155#true} is VALID [2020-07-17 22:53:00,171 INFO L280 TraceCheckUtils]: 55: Hoare triple {2155#true} assume true; {2155#true} is VALID [2020-07-17 22:53:00,174 INFO L275 TraceCheckUtils]: 56: Hoare quadruple {2155#true} {2370#(and (not (= 0 task_~t.base)) (= 0 task_~t.offset))} #167#return; {2193#(not (= 0 task_~t.base))} is VALID [2020-07-17 22:53:00,174 INFO L280 TraceCheckUtils]: 57: Hoare triple {2193#(not (= 0 task_~t.base))} assume -2147483648 <= #t~ret29 && #t~ret29 <= 2147483647;~n~1 := #t~ret29;havoc #t~ret29; {2193#(not (= 0 task_~t.base))} is VALID [2020-07-17 22:53:00,175 INFO L263 TraceCheckUtils]: 58: Hoare triple {2193#(not (= 0 task_~t.base))} call assume_cycle_if_not((if 0 != ~n~1 then 1 else 0)); {2155#true} is VALID [2020-07-17 22:53:00,175 INFO L280 TraceCheckUtils]: 59: Hoare triple {2155#true} ~cond := #in~cond; {2155#true} is VALID [2020-07-17 22:53:00,175 INFO L280 TraceCheckUtils]: 60: Hoare triple {2155#true} assume !(0 == ~cond); {2155#true} is VALID [2020-07-17 22:53:00,175 INFO L280 TraceCheckUtils]: 61: Hoare triple {2155#true} assume true; {2155#true} is VALID [2020-07-17 22:53:00,177 INFO L275 TraceCheckUtils]: 62: Hoare quadruple {2155#true} {2193#(not (= 0 task_~t.base))} #169#return; {2193#(not (= 0 task_~t.base))} is VALID [2020-07-17 22:53:00,178 INFO L280 TraceCheckUtils]: 63: Hoare triple {2193#(not (= 0 task_~t.base))} call #t~malloc30.base, #t~malloc30.offset := #Ultimate.allocOnHeap(4 * ~n~1); {2193#(not (= 0 task_~t.base))} is VALID [2020-07-17 22:53:00,179 INFO L263 TraceCheckUtils]: 64: Hoare triple {2193#(not (= 0 task_~t.base))} call #Ultimate.meminit(#t~malloc30.base, #t~malloc30.offset, ~n~1, 4, 4 * ~n~1); {2155#true} is VALID [2020-07-17 22:53:00,179 INFO L280 TraceCheckUtils]: 65: Hoare triple {2155#true} #memory_int := ~initToZeroAtPointerBaseAddress~int(#memory_int, #ptr.base); {2155#true} is VALID [2020-07-17 22:53:00,179 INFO L280 TraceCheckUtils]: 66: Hoare triple {2155#true} assume true; {2155#true} is VALID [2020-07-17 22:53:00,180 INFO L275 TraceCheckUtils]: 67: Hoare quadruple {2155#true} {2193#(not (= 0 task_~t.base))} #171#return; {2193#(not (= 0 task_~t.base))} is VALID [2020-07-17 22:53:00,181 INFO L280 TraceCheckUtils]: 68: Hoare triple {2193#(not (= 0 task_~t.base))} ~x~0.base, ~x~0.offset := #t~malloc30.base, #t~malloc30.offset; {2193#(not (= 0 task_~t.base))} is VALID [2020-07-17 22:53:00,181 INFO L263 TraceCheckUtils]: 69: Hoare triple {2193#(not (= 0 task_~t.base))} call #t~ret31 := tree_inorder(~t.base, ~t.offset, ~x~0.base, ~x~0.offset, ~n~1); {2155#true} is VALID [2020-07-17 22:53:00,182 INFO L280 TraceCheckUtils]: 70: Hoare triple {2155#true} ~t.base, ~t.offset := #in~t.base, #in~t.offset;~a.base, ~a.offset := #in~a.base, #in~a.offset;~i := #in~i; {2251#(= |tree_inorder_#in~t.base| tree_inorder_~t.base)} is VALID [2020-07-17 22:53:00,182 INFO L280 TraceCheckUtils]: 71: Hoare triple {2251#(= |tree_inorder_#in~t.base| tree_inorder_~t.base)} assume ~t.base == 0 && ~t.offset == 0;#res := ~i; {2252#(= 0 |tree_inorder_#in~t.base|)} is VALID [2020-07-17 22:53:00,183 INFO L280 TraceCheckUtils]: 72: Hoare triple {2252#(= 0 |tree_inorder_#in~t.base|)} assume true; {2252#(= 0 |tree_inorder_#in~t.base|)} is VALID [2020-07-17 22:53:00,184 INFO L275 TraceCheckUtils]: 73: Hoare quadruple {2252#(= 0 |tree_inorder_#in~t.base|)} {2193#(not (= 0 task_~t.base))} #173#return; {2156#false} is VALID [2020-07-17 22:53:00,184 INFO L280 TraceCheckUtils]: 74: Hoare triple {2156#false} assume -2147483648 <= #t~ret31 && #t~ret31 <= 2147483647;havoc #t~ret31;call #t~mem32 := read~int(~x~0.base, ~x~0.offset, 4); {2156#false} is VALID [2020-07-17 22:53:00,184 INFO L263 TraceCheckUtils]: 75: Hoare triple {2156#false} call __VERIFIER_assert((if ~a~1 == #t~mem32 then 1 else 0)); {2156#false} is VALID [2020-07-17 22:53:00,185 INFO L280 TraceCheckUtils]: 76: Hoare triple {2156#false} ~cond := #in~cond; {2156#false} is VALID [2020-07-17 22:53:00,185 INFO L280 TraceCheckUtils]: 77: Hoare triple {2156#false} assume 0 == ~cond; {2156#false} is VALID [2020-07-17 22:53:00,185 INFO L280 TraceCheckUtils]: 78: Hoare triple {2156#false} assume !false; {2156#false} is VALID [2020-07-17 22:53:00,192 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-07-17 22:53:00,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-17 22:53:00,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 17 [2020-07-17 22:53:00,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298768223] [2020-07-17 22:53:00,197 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 79 [2020-07-17 22:53:00,213 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-17 22:53:00,214 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 17 states. [2020-07-17 22:53:00,336 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 84 edges. 84 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:53:00,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-07-17 22:53:00,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 22:53:00,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-07-17 22:53:00,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2020-07-17 22:53:00,338 INFO L87 Difference]: Start difference. First operand 95 states and 121 transitions. Second operand 17 states. [2020-07-17 22:53:05,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:53:05,407 INFO L93 Difference]: Finished difference Result 152 states and 194 transitions. [2020-07-17 22:53:05,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-17 22:53:05,407 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 79 [2020-07-17 22:53:05,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 22:53:05,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-07-17 22:53:05,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 186 transitions. [2020-07-17 22:53:05,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-07-17 22:53:05,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 186 transitions. [2020-07-17 22:53:05,419 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 19 states and 186 transitions. [2020-07-17 22:53:05,721 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 186 edges. 186 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:53:05,728 INFO L225 Difference]: With dead ends: 152 [2020-07-17 22:53:05,729 INFO L226 Difference]: Without dead ends: 99 [2020-07-17 22:53:05,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 99 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=144, Invalid=726, Unknown=0, NotChecked=0, Total=870 [2020-07-17 22:53:05,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-07-17 22:53:05,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 97. [2020-07-17 22:53:05,841 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-17 22:53:05,841 INFO L82 GeneralOperation]: Start isEquivalent. First operand 99 states. Second operand 97 states. [2020-07-17 22:53:05,841 INFO L74 IsIncluded]: Start isIncluded. First operand 99 states. Second operand 97 states. [2020-07-17 22:53:05,841 INFO L87 Difference]: Start difference. First operand 99 states. Second operand 97 states. [2020-07-17 22:53:05,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:53:05,847 INFO L93 Difference]: Finished difference Result 99 states and 127 transitions. [2020-07-17 22:53:05,847 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 127 transitions. [2020-07-17 22:53:05,848 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:53:05,848 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:53:05,848 INFO L74 IsIncluded]: Start isIncluded. First operand 97 states. Second operand 99 states. [2020-07-17 22:53:05,848 INFO L87 Difference]: Start difference. First operand 97 states. Second operand 99 states. [2020-07-17 22:53:05,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:53:05,854 INFO L93 Difference]: Finished difference Result 99 states and 127 transitions. [2020-07-17 22:53:05,854 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 127 transitions. [2020-07-17 22:53:05,855 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:53:05,855 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:53:05,855 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-17 22:53:05,855 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-17 22:53:05,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-07-17 22:53:05,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 125 transitions. [2020-07-17 22:53:05,860 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 125 transitions. Word has length 79 [2020-07-17 22:53:05,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 22:53:05,861 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 125 transitions. [2020-07-17 22:53:05,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-07-17 22:53:05,861 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 125 transitions. [2020-07-17 22:53:05,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-07-17 22:53:05,863 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:53:05,863 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] [2020-07-17 22:53:06,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 22:53:06,078 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:53:06,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:53:06,079 INFO L82 PathProgramCache]: Analyzing trace with hash -708508396, now seen corresponding path program 1 times [2020-07-17 22:53:06,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:53:06,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273412273] [2020-07-17 22:53:06,081 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:53:06,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 22:53:06,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 22:53:06,284 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-17 22:53:06,285 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 22:53:06,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-17 22:53:06,451 WARN L170 areAnnotationChecker]: ULTIMATE.initENTRY has no Hoare annotation [2020-07-17 22:53:06,451 WARN L170 areAnnotationChecker]: minENTRY has no Hoare annotation [2020-07-17 22:53:06,451 WARN L170 areAnnotationChecker]: taskENTRY has no Hoare annotation [2020-07-17 22:53:06,451 WARN L170 areAnnotationChecker]: sizeENTRY has no Hoare annotation [2020-07-17 22:53:06,451 WARN L170 areAnnotationChecker]: nondet_treeENTRY has no Hoare annotation [2020-07-17 22:53:06,452 WARN L170 areAnnotationChecker]: nondet_treeENTRY has no Hoare annotation [2020-07-17 22:53:06,452 WARN L170 areAnnotationChecker]: assume_cycle_if_notENTRY has no Hoare annotation [2020-07-17 22:53:06,452 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-17 22:53:06,452 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-17 22:53:06,452 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-17 22:53:06,452 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-17 22:53:06,453 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2020-07-17 22:53:06,453 WARN L170 areAnnotationChecker]: #Ultimate.meminitENTRY has no Hoare annotation [2020-07-17 22:53:06,453 WARN L170 areAnnotationChecker]: tree_inorderENTRY has no Hoare annotation [2020-07-17 22:53:06,453 WARN L170 areAnnotationChecker]: tree_delENTRY has no Hoare annotation [2020-07-17 22:53:06,453 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-17 22:53:06,454 WARN L170 areAnnotationChecker]: L35 has no Hoare annotation [2020-07-17 22:53:06,454 WARN L170 areAnnotationChecker]: L35 has no Hoare annotation [2020-07-17 22:53:06,454 WARN L170 areAnnotationChecker]: L84 has no Hoare annotation [2020-07-17 22:53:06,454 WARN L170 areAnnotationChecker]: L84 has no Hoare annotation [2020-07-17 22:53:06,455 WARN L170 areAnnotationChecker]: L79 has no Hoare annotation [2020-07-17 22:53:06,455 WARN L170 areAnnotationChecker]: L79 has no Hoare annotation [2020-07-17 22:53:06,455 WARN L170 areAnnotationChecker]: nondet_treeFINAL has no Hoare annotation [2020-07-17 22:53:06,455 WARN L170 areAnnotationChecker]: L28 has no Hoare annotation [2020-07-17 22:53:06,455 WARN L170 areAnnotationChecker]: L28 has no Hoare annotation [2020-07-17 22:53:06,456 WARN L170 areAnnotationChecker]: L9 has no Hoare annotation [2020-07-17 22:53:06,456 WARN L170 areAnnotationChecker]: L9 has no Hoare annotation [2020-07-17 22:53:06,456 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-17 22:53:06,456 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-17 22:53:06,456 WARN L170 areAnnotationChecker]: L108 has no Hoare annotation [2020-07-17 22:53:06,456 WARN L170 areAnnotationChecker]: L108 has no Hoare annotation [2020-07-17 22:53:06,457 WARN L170 areAnnotationChecker]: L14 has no Hoare annotation [2020-07-17 22:53:06,457 WARN L170 areAnnotationChecker]: L14 has no Hoare annotation [2020-07-17 22:53:06,457 WARN L170 areAnnotationChecker]: #Ultimate.meminitFINAL has no Hoare annotation [2020-07-17 22:53:06,457 WARN L170 areAnnotationChecker]: L68 has no Hoare annotation [2020-07-17 22:53:06,457 WARN L170 areAnnotationChecker]: L68 has no Hoare annotation [2020-07-17 22:53:06,457 WARN L170 areAnnotationChecker]: L53 has no Hoare annotation [2020-07-17 22:53:06,457 WARN L170 areAnnotationChecker]: L53 has no Hoare annotation [2020-07-17 22:53:06,457 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-17 22:53:06,457 WARN L170 areAnnotationChecker]: minFINAL has no Hoare annotation [2020-07-17 22:53:06,458 WARN L170 areAnnotationChecker]: L39 has no Hoare annotation [2020-07-17 22:53:06,458 WARN L170 areAnnotationChecker]: L39 has no Hoare annotation [2020-07-17 22:53:06,458 WARN L170 areAnnotationChecker]: L84-1 has no Hoare annotation [2020-07-17 22:53:06,458 WARN L170 areAnnotationChecker]: sizeFINAL has no Hoare annotation [2020-07-17 22:53:06,458 WARN L170 areAnnotationChecker]: L80 has no Hoare annotation [2020-07-17 22:53:06,458 WARN L170 areAnnotationChecker]: L80 has no Hoare annotation [2020-07-17 22:53:06,458 WARN L170 areAnnotationChecker]: nondet_treeEXIT has no Hoare annotation [2020-07-17 22:53:06,458 WARN L170 areAnnotationChecker]: nondet_treeEXIT has no Hoare annotation [2020-07-17 22:53:06,458 WARN L170 areAnnotationChecker]: nondet_treeEXIT has no Hoare annotation [2020-07-17 22:53:06,459 WARN L170 areAnnotationChecker]: L28-1 has no Hoare annotation [2020-07-17 22:53:06,459 WARN L170 areAnnotationChecker]: L9-3 has no Hoare annotation [2020-07-17 22:53:06,459 WARN L170 areAnnotationChecker]: L9-3 has no Hoare annotation [2020-07-17 22:53:06,459 WARN L170 areAnnotationChecker]: L9-3 has no Hoare annotation [2020-07-17 22:53:06,459 WARN L170 areAnnotationChecker]: L9-5 has no Hoare annotation [2020-07-17 22:53:06,459 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-17 22:53:06,459 WARN L170 areAnnotationChecker]: L108-1 has no Hoare annotation [2020-07-17 22:53:06,459 WARN L170 areAnnotationChecker]: L14-1 has no Hoare annotation [2020-07-17 22:53:06,460 WARN L170 areAnnotationChecker]: L14-1 has no Hoare annotation [2020-07-17 22:53:06,460 WARN L170 areAnnotationChecker]: L14-3 has no Hoare annotation [2020-07-17 22:53:06,460 WARN L170 areAnnotationChecker]: #Ultimate.meminitEXIT has no Hoare annotation [2020-07-17 22:53:06,460 WARN L170 areAnnotationChecker]: #Ultimate.meminitEXIT has no Hoare annotation [2020-07-17 22:53:06,460 WARN L170 areAnnotationChecker]: tree_inorderFINAL has no Hoare annotation [2020-07-17 22:53:06,460 WARN L170 areAnnotationChecker]: L71 has no Hoare annotation [2020-07-17 22:53:06,460 WARN L170 areAnnotationChecker]: L71 has no Hoare annotation [2020-07-17 22:53:06,460 WARN L170 areAnnotationChecker]: L53-2 has no Hoare annotation [2020-07-17 22:53:06,460 WARN L170 areAnnotationChecker]: L57-2 has no Hoare annotation [2020-07-17 22:53:06,461 WARN L170 areAnnotationChecker]: L57-2 has no Hoare annotation [2020-07-17 22:53:06,461 WARN L170 areAnnotationChecker]: L57-2 has no Hoare annotation [2020-07-17 22:53:06,461 WARN L170 areAnnotationChecker]: minEXIT has no Hoare annotation [2020-07-17 22:53:06,461 WARN L170 areAnnotationChecker]: minEXIT has no Hoare annotation [2020-07-17 22:53:06,461 WARN L170 areAnnotationChecker]: minEXIT has no Hoare annotation [2020-07-17 22:53:06,461 WARN L170 areAnnotationChecker]: L39-1 has no Hoare annotation [2020-07-17 22:53:06,461 WARN L170 areAnnotationChecker]: L87 has no Hoare annotation [2020-07-17 22:53:06,461 WARN L170 areAnnotationChecker]: L87 has no Hoare annotation [2020-07-17 22:53:06,461 WARN L170 areAnnotationChecker]: sizeEXIT has no Hoare annotation [2020-07-17 22:53:06,462 WARN L170 areAnnotationChecker]: sizeEXIT has no Hoare annotation [2020-07-17 22:53:06,462 WARN L170 areAnnotationChecker]: sizeEXIT has no Hoare annotation [2020-07-17 22:53:06,462 WARN L170 areAnnotationChecker]: sizeEXIT has no Hoare annotation [2020-07-17 22:53:06,462 WARN L170 areAnnotationChecker]: L80-1 has no Hoare annotation [2020-07-17 22:53:06,462 WARN L170 areAnnotationChecker]: L29-1 has no Hoare annotation [2020-07-17 22:53:06,462 WARN L170 areAnnotationChecker]: L29 has no Hoare annotation [2020-07-17 22:53:06,462 WARN L170 areAnnotationChecker]: L29 has no Hoare annotation [2020-07-17 22:53:06,462 WARN L170 areAnnotationChecker]: assume_cycle_if_notEXIT has no Hoare annotation [2020-07-17 22:53:06,463 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-17 22:53:06,463 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-17 22:53:06,463 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-17 22:53:06,463 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-17 22:53:06,463 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-17 22:53:06,463 WARN L170 areAnnotationChecker]: L89-1 has no Hoare annotation [2020-07-17 22:53:06,463 WARN L170 areAnnotationChecker]: L96-1 has no Hoare annotation [2020-07-17 22:53:06,464 WARN L170 areAnnotationChecker]: tree_inorderEXIT has no Hoare annotation [2020-07-17 22:53:06,464 WARN L170 areAnnotationChecker]: tree_inorderEXIT has no Hoare annotation [2020-07-17 22:53:06,464 WARN L170 areAnnotationChecker]: tree_inorderEXIT has no Hoare annotation [2020-07-17 22:53:06,464 WARN L170 areAnnotationChecker]: tree_inorderEXIT has no Hoare annotation [2020-07-17 22:53:06,464 WARN L170 areAnnotationChecker]: L71-1 has no Hoare annotation [2020-07-17 22:53:06,464 WARN L170 areAnnotationChecker]: tree_delFINAL has no Hoare annotation [2020-07-17 22:53:06,465 WARN L170 areAnnotationChecker]: L57-3 has no Hoare annotation [2020-07-17 22:53:06,465 WARN L170 areAnnotationChecker]: L40-1 has no Hoare annotation [2020-07-17 22:53:06,465 WARN L170 areAnnotationChecker]: L40 has no Hoare annotation [2020-07-17 22:53:06,465 WARN L170 areAnnotationChecker]: L40 has no Hoare annotation [2020-07-17 22:53:06,465 WARN L170 areAnnotationChecker]: L87-1 has no Hoare annotation [2020-07-17 22:53:06,466 WARN L170 areAnnotationChecker]: L95-1 has no Hoare annotation [2020-07-17 22:53:06,466 WARN L170 areAnnotationChecker]: L80-3 has no Hoare annotation [2020-07-17 22:53:06,466 WARN L170 areAnnotationChecker]: L80-2 has no Hoare annotation [2020-07-17 22:53:06,466 WARN L170 areAnnotationChecker]: L80-2 has no Hoare annotation [2020-07-17 22:53:06,466 WARN L170 areAnnotationChecker]: L88-1 has no Hoare annotation [2020-07-17 22:53:06,467 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-17 22:53:06,467 WARN L170 areAnnotationChecker]: L91-1 has no Hoare annotation [2020-07-17 22:53:06,467 WARN L170 areAnnotationChecker]: L94-1 has no Hoare annotation [2020-07-17 22:53:06,467 WARN L170 areAnnotationChecker]: L99-1 has no Hoare annotation [2020-07-17 22:53:06,468 WARN L170 areAnnotationChecker]: L102-1 has no Hoare annotation [2020-07-17 22:53:06,468 WARN L170 areAnnotationChecker]: L90 has no Hoare annotation [2020-07-17 22:53:06,468 WARN L170 areAnnotationChecker]: L90 has no Hoare annotation [2020-07-17 22:53:06,469 WARN L170 areAnnotationChecker]: L97 has no Hoare annotation [2020-07-17 22:53:06,469 WARN L170 areAnnotationChecker]: L97 has no Hoare annotation [2020-07-17 22:53:06,469 WARN L170 areAnnotationChecker]: L90-1 has no Hoare annotation [2020-07-17 22:53:06,469 WARN L170 areAnnotationChecker]: L97-1 has no Hoare annotation [2020-07-17 22:53:06,469 WARN L170 areAnnotationChecker]: L73-1 has no Hoare annotation [2020-07-17 22:53:06,469 WARN L170 areAnnotationChecker]: L73 has no Hoare annotation [2020-07-17 22:53:06,470 WARN L170 areAnnotationChecker]: L73 has no Hoare annotation [2020-07-17 22:53:06,470 WARN L170 areAnnotationChecker]: tree_delEXIT has no Hoare annotation [2020-07-17 22:53:06,470 WARN L170 areAnnotationChecker]: L41 has no Hoare annotation [2020-07-17 22:53:06,470 WARN L170 areAnnotationChecker]: L41 has no Hoare annotation [2020-07-17 22:53:06,470 WARN L170 areAnnotationChecker]: L88 has no Hoare annotation [2020-07-17 22:53:06,470 WARN L170 areAnnotationChecker]: L88 has no Hoare annotation [2020-07-17 22:53:06,470 WARN L170 areAnnotationChecker]: L96 has no Hoare annotation [2020-07-17 22:53:06,470 WARN L170 areAnnotationChecker]: L96 has no Hoare annotation [2020-07-17 22:53:06,471 WARN L170 areAnnotationChecker]: L89 has no Hoare annotation [2020-07-17 22:53:06,471 WARN L170 areAnnotationChecker]: L89 has no Hoare annotation [2020-07-17 22:53:06,471 WARN L170 areAnnotationChecker]: L93 has no Hoare annotation [2020-07-17 22:53:06,471 WARN L170 areAnnotationChecker]: L93 has no Hoare annotation [2020-07-17 22:53:06,471 WARN L170 areAnnotationChecker]: L95 has no Hoare annotation [2020-07-17 22:53:06,471 WARN L170 areAnnotationChecker]: L95 has no Hoare annotation [2020-07-17 22:53:06,471 WARN L170 areAnnotationChecker]: L101-3 has no Hoare annotation [2020-07-17 22:53:06,472 WARN L170 areAnnotationChecker]: L101-3 has no Hoare annotation [2020-07-17 22:53:06,472 WARN L170 areAnnotationChecker]: L101-3 has no Hoare annotation [2020-07-17 22:53:06,472 WARN L170 areAnnotationChecker]: L101-2 has no Hoare annotation [2020-07-17 22:53:06,472 WARN L170 areAnnotationChecker]: L91 has no Hoare annotation [2020-07-17 22:53:06,472 WARN L170 areAnnotationChecker]: L91 has no Hoare annotation [2020-07-17 22:53:06,472 WARN L170 areAnnotationChecker]: L99 has no Hoare annotation [2020-07-17 22:53:06,472 WARN L170 areAnnotationChecker]: L99 has no Hoare annotation [2020-07-17 22:53:06,472 WARN L170 areAnnotationChecker]: L93-1 has no Hoare annotation [2020-07-17 22:53:06,472 WARN L170 areAnnotationChecker]: L42 has no Hoare annotation [2020-07-17 22:53:06,473 WARN L170 areAnnotationChecker]: L42 has no Hoare annotation [2020-07-17 22:53:06,473 WARN L170 areAnnotationChecker]: L101-4 has no Hoare annotation [2020-07-17 22:53:06,473 WARN L170 areAnnotationChecker]: L102 has no Hoare annotation [2020-07-17 22:53:06,473 WARN L170 areAnnotationChecker]: L102 has no Hoare annotation [2020-07-17 22:53:06,473 WARN L170 areAnnotationChecker]: L94 has no Hoare annotation [2020-07-17 22:53:06,473 WARN L170 areAnnotationChecker]: L94 has no Hoare annotation [2020-07-17 22:53:06,473 WARN L170 areAnnotationChecker]: taskFINAL has no Hoare annotation [2020-07-17 22:53:06,473 WARN L170 areAnnotationChecker]: taskEXIT has no Hoare annotation [2020-07-17 22:53:06,473 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-17 22:53:06,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 10:53:06 BoogieIcfgContainer [2020-07-17 22:53:06,478 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 22:53:06,483 INFO L168 Benchmark]: Toolchain (without parser) took 24251.31 ms. Allocated memory was 143.7 MB in the beginning and 458.8 MB in the end (delta: 315.1 MB). Free memory was 99.2 MB in the beginning and 204.4 MB in the end (delta: -105.2 MB). Peak memory consumption was 209.9 MB. Max. memory is 7.1 GB. [2020-07-17 22:53:06,484 INFO L168 Benchmark]: CDTParser took 1.33 ms. Allocated memory is still 143.7 MB. Free memory is still 118.2 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-17 22:53:06,485 INFO L168 Benchmark]: CACSL2BoogieTranslator took 545.85 ms. Allocated memory was 143.7 MB in the beginning and 199.8 MB in the end (delta: 56.1 MB). Free memory was 98.8 MB in the beginning and 175.5 MB in the end (delta: -76.6 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. [2020-07-17 22:53:06,486 INFO L168 Benchmark]: Boogie Preprocessor took 97.59 ms. Allocated memory is still 199.8 MB. Free memory was 175.5 MB in the beginning and 171.2 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2020-07-17 22:53:06,487 INFO L168 Benchmark]: RCFGBuilder took 983.78 ms. Allocated memory is still 199.8 MB. Free memory was 171.2 MB in the beginning and 108.7 MB in the end (delta: 62.5 MB). Peak memory consumption was 62.5 MB. Max. memory is 7.1 GB. [2020-07-17 22:53:06,488 INFO L168 Benchmark]: TraceAbstraction took 22614.13 ms. Allocated memory was 199.8 MB in the beginning and 458.8 MB in the end (delta: 259.0 MB). Free memory was 107.8 MB in the beginning and 204.4 MB in the end (delta: -96.7 MB). Peak memory consumption was 162.3 MB. Max. memory is 7.1 GB. [2020-07-17 22:53:06,491 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.33 ms. Allocated memory is still 143.7 MB. Free memory is still 118.2 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 545.85 ms. Allocated memory was 143.7 MB in the beginning and 199.8 MB in the end (delta: 56.1 MB). Free memory was 98.8 MB in the beginning and 175.5 MB in the end (delta: -76.6 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 97.59 ms. Allocated memory is still 199.8 MB. Free memory was 175.5 MB in the beginning and 171.2 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 983.78 ms. Allocated memory is still 199.8 MB. Free memory was 171.2 MB in the beginning and 108.7 MB in the end (delta: 62.5 MB). Peak memory consumption was 62.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 22614.13 ms. Allocated memory was 199.8 MB in the beginning and 458.8 MB in the end (delta: 259.0 MB). Free memory was 107.8 MB in the beginning and 204.4 MB in the end (delta: -96.7 MB). Peak memory consumption was 162.3 MB. 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: [L108] 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))={-1:0}, n={-1:0}, 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))={-1:0}, n={-1:0}, nondet_tree()={0:0}] [L29] n->right = nondet_tree() [L30] return n; VAL [\result={-1:0}, malloc(sizeof(struct node))={-1:0}, n={-1:0}] [L108] RET, EXPR nondet_tree() VAL [nondet_tree()={-1:0}] [L108] CALL task(nondet_tree()) VAL [t={-1:0}] [L84] CALL, EXPR min(t) VAL [n={-1:0}] [L35] COND FALSE !(!n) [L38] EXPR n->data [L38] int a = n->data; [L39] EXPR n->left VAL [a=2147483647, n={-1:0}, n={-1:0}, n->left={0:0}] [L39] 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}] [L39] RET, EXPR min(n->left) VAL [a=2147483647, min(n->left)=2147483647, n={-1:0}, n={-1:0}, n->left={0:0}] [L39] int b = min(n->left); [L40] EXPR n->right VAL [a=2147483647, b=2147483647, n={-1:0}, n={-1:0}, n->right={0:0}] [L40] 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}] [L40] RET, EXPR min(n->right) VAL [a=2147483647, b=2147483647, min(n->right)=2147483647, n={-1:0}, n={-1:0}, n->right={0:0}] [L40] int c = min(n->right); [L41] COND TRUE b <= a && b <= c [L41] return b; VAL [\result=2147483647, a=2147483647, b=2147483647, c=2147483647, n={-1:0}, n={-1:0}] [L84] RET, EXPR min(t) VAL [min(t)=2147483647, t={-1:0}, t={-1:0}] [L84] int a = min(t); [L85] int b; VAL [a=2147483647, b={2:0}, t={-1:0}, t={-1:0}] [L87] CALL, EXPR size(t) VAL [t={-1:0}] [L79] COND FALSE !(!t) [L80] EXPR t->left VAL [t={-1:0}, t={-1:0}, t->left={0:0}] [L80] CALL, EXPR size(t->left) VAL [t={0:0}] [L79] COND TRUE !t [L79] return 0; VAL [\result=0, t={0:0}, t={0:0}] [L80] RET, EXPR size(t->left) VAL [size(t->left)=0, t={-1:0}, t={-1:0}, t->left={0:0}] [L80] EXPR t->right VAL [size(t->left)=0, t={-1:0}, t={-1:0}, t->left={0:0}, t->right={0:0}] [L80] CALL, EXPR size(t->right) VAL [t={0:0}] [L79] COND TRUE !t [L79] return 0; VAL [\result=0, t={0:0}, t={0:0}] [L80] RET, EXPR size(t->right) VAL [size(t->left)=0, size(t->right)=0, t={-1:0}, t={-1:0}, t->left={0:0}, t->right={0:0}] [L80] return size(t->left) + size(t->right) + 1; [L87] RET, EXPR size(t) VAL [a=2147483647, b={2:0}, size(t)=1, t={-1:0}, t={-1:0}] [L87] int n = size(t); [L88] CALL assume_cycle_if_not(n != 0) VAL [\old(cond)=1] [L9] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L88] RET assume_cycle_if_not(n != 0) VAL [a=2147483647, b={2:0}, n=1, t={-1:0}, t={-1:0}] [L89] EXPR, FCALL calloc(n, sizeof(int)) VAL [a=2147483647, b={2:0}, calloc(n, sizeof(int))={-2:0}, n=1, t={-1:0}, t={-1:0}] [L89] int *x = calloc(n, sizeof(int)); VAL [a=2147483647, b={2:0}, calloc(n, sizeof(int))={-2:0}, n=1, t={-1:0}, t={-1:0}, x={-2:0}] [L90] CALL tree_inorder(t, x, n) VAL [\old(i)=1, a={-2:0}, t={-1:0}] [L68] COND FALSE !(!t) [L71] EXPR t->left VAL [\old(i)=1, a={-2:0}, a={-2:0}, i=1, t={-1:0}, t={-1:0}, t->left={0:0}] [L71] CALL, EXPR tree_inorder(t->left, a, i) VAL [\old(i)=1, a={-2:0}, t={0:0}] [L68] COND TRUE !t [L69] return i; VAL [\old(i)=1, \result=1, a={-2:0}, a={-2:0}, i=1, t={0:0}, t={0:0}] [L71] RET, EXPR tree_inorder(t->left, a, i) VAL [\old(i)=1, a={-2:0}, a={-2:0}, i=1, t={-1:0}, t={-1:0}, t->left={0:0}, tree_inorder(t->left, a, i)=1] [L71] i = tree_inorder(t->left, a, i) [L72] EXPR i++ [L72] EXPR t->data [L72] a[i++] = t->data [L73] EXPR t->right VAL [\old(i)=1, a={-2:0}, a={-2:0}, i=2, t={-1:0}, t={-1:0}, t->right={0:0}] [L73] CALL, EXPR tree_inorder(t->right, a, i) VAL [\old(i)=2, a={-2:0}, t={0:0}] [L68] COND TRUE !t [L69] return i; VAL [\old(i)=2, \result=2, a={-2:0}, a={-2:0}, i=2, t={0:0}, t={0:0}] [L73] RET, EXPR tree_inorder(t->right, a, i) VAL [\old(i)=1, a={-2:0}, a={-2:0}, i=2, t={-1:0}, t={-1:0}, t->right={0:0}, tree_inorder(t->right, a, i)=2] [L73] i = tree_inorder(t->right, a, i) [L74] return i; VAL [\old(i)=1, \result=2, a={-2:0}, a={-2:0}, i=2, t={-1:0}, t={-1:0}] [L90] RET tree_inorder(t, x, n) VAL [a=2147483647, b={2:0}, calloc(n, sizeof(int))={-2:0}, n=1, t={-1:0}, t={-1:0}, tree_inorder(t, x, n)=2, x={-2:0}] [L91] EXPR x[0] VAL [a=2147483647, b={2:0}, calloc(n, sizeof(int))={-2:0}, n=1, t={-1:0}, t={-1:0}, x={-2:0}, x[0]=0] [L91] 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, 98 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 22.3s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 17.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 344 SDtfs, 500 SDslu, 1526 SDs, 0 SdLazy, 2229 SolverSat, 463 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 284 GetRequests, 200 SyntacticMatches, 4 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=98occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 17 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 471 NumberOfCodeBlocks, 471 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 374 ConstructedInterpolants, 0 QuantifiedInterpolants, 72712 SizeOfPredicates, 14 NumberOfNonLiveVariables, 633 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 103/111 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...