/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test22-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-19 23:19:59,389 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 23:19:59,392 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 23:19:59,409 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 23:19:59,409 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 23:19:59,411 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 23:19:59,412 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 23:19:59,425 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 23:19:59,427 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 23:19:59,428 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 23:19:59,429 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 23:19:59,432 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 23:19:59,432 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 23:19:59,436 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 23:19:59,437 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 23:19:59,439 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 23:19:59,441 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 23:19:59,442 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 23:19:59,445 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 23:19:59,450 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 23:19:59,452 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 23:19:59,454 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 23:19:59,455 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 23:19:59,456 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 23:19:59,459 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-19 23:19:59,473 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 23:19:59,473 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 23:19:59,475 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 23:19:59,475 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 [2020-07-19 23:19:59,499 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 23:19:59,500 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 23:19:59,501 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 23:19:59,501 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 23:19:59,502 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 23:19:59,502 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 23:19:59,502 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 23:19:59,503 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 23:19:59,503 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 23:19:59,503 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 23:19:59,504 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 23:19:59,505 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 23:19:59,505 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 23:19:59,505 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 23:19:59,505 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 23:19:59,506 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 23:19:59,506 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 23:19:59,506 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 23:19:59,506 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 23:19:59,506 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 23:19:59,507 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 23:19:59,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 23:19:59,507 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 23:19:59,507 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 23:19:59,507 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 23:19:59,508 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 23:19:59,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 23:19:59,508 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 23:19:59,508 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 23:19:59,508 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-19 23:19:59,787 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 23:19:59,799 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 23:19:59,803 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 23:19:59,804 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 23:19:59,804 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 23:19:59,805 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test22-2.c [2020-07-19 23:19:59,862 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6a28ce56/f0d289f8f2f74f289f43d972342b88ed/FLAG0edc863e1 [2020-07-19 23:20:00,292 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 23:20:00,293 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test22-2.c [2020-07-19 23:20:00,299 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6a28ce56/f0d289f8f2f74f289f43d972342b88ed/FLAG0edc863e1 [2020-07-19 23:20:00,705 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6a28ce56/f0d289f8f2f74f289f43d972342b88ed [2020-07-19 23:20:00,715 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 23:20:00,718 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 23:20:00,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 23:20:00,719 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 23:20:00,722 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 23:20:00,723 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:20:00" (1/1) ... [2020-07-19 23:20:00,726 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22ef5c86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:20:00, skipping insertion in model container [2020-07-19 23:20:00,726 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:20:00" (1/1) ... [2020-07-19 23:20:00,734 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 23:20:00,755 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 23:20:00,955 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 23:20:00,963 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 23:20:00,979 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 23:20:00,996 INFO L208 MainTranslator]: Completed translation [2020-07-19 23:20:00,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:20:00 WrapperNode [2020-07-19 23:20:00,997 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 23:20:00,998 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 23:20:00,998 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 23:20:00,998 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 23:20:01,089 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:20:00" (1/1) ... [2020-07-19 23:20:01,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:20:00" (1/1) ... [2020-07-19 23:20:01,097 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:20:00" (1/1) ... [2020-07-19 23:20:01,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:20:00" (1/1) ... [2020-07-19 23:20:01,106 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:20:00" (1/1) ... [2020-07-19 23:20:01,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:20:00" (1/1) ... [2020-07-19 23:20:01,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:20:00" (1/1) ... [2020-07-19 23:20:01,114 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 23:20:01,114 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 23:20:01,115 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 23:20:01,115 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 23:20:01,115 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:20:00" (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 [2020-07-19 23:20:01,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 23:20:01,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 23:20:01,173 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-07-19 23:20:01,173 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2020-07-19 23:20:01,173 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-07-19 23:20:01,173 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 23:20:01,174 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 23:20:01,174 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-19 23:20:01,174 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-19 23:20:01,174 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-07-19 23:20:01,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-19 23:20:01,174 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2020-07-19 23:20:01,174 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-07-19 23:20:01,175 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-19 23:20:01,175 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 23:20:01,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 23:20:01,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-19 23:20:01,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-19 23:20:01,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 23:20:01,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-19 23:20:01,434 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 23:20:01,434 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-19 23:20:01,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:20:01 BoogieIcfgContainer [2020-07-19 23:20:01,439 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 23:20:01,441 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 23:20:01,441 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 23:20:01,444 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 23:20:01,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 11:20:00" (1/3) ... [2020-07-19 23:20:01,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34fab50e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:20:01, skipping insertion in model container [2020-07-19 23:20:01,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:20:00" (2/3) ... [2020-07-19 23:20:01,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34fab50e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:20:01, skipping insertion in model container [2020-07-19 23:20:01,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:20:01" (3/3) ... [2020-07-19 23:20:01,447 INFO L109 eAbstractionObserver]: Analyzing ICFG test22-2.c [2020-07-19 23:20:01,459 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 23:20:01,466 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 23:20:01,496 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 23:20:01,536 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 23:20:01,536 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 23:20:01,536 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 23:20:01,536 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 23:20:01,537 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 23:20:01,537 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 23:20:01,537 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 23:20:01,537 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 23:20:01,558 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-07-19 23:20:01,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-07-19 23:20:01,565 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:20:01,566 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:20:01,566 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:20:01,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:20:01,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1345538594, now seen corresponding path program 1 times [2020-07-19 23:20:01,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:20:01,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433852961] [2020-07-19 23:20:01,582 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3c3e54db [2020-07-19 23:20:01,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:20:01,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:20:01,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:20:01,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:20:01,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:20:01,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:20:01,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:20:01,916 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-19 23:20:01,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433852961] [2020-07-19 23:20:01,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:20:01,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-19 23:20:01,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668394898] [2020-07-19 23:20:01,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-19 23:20:01,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:20:01,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-19 23:20:01,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-19 23:20:01,943 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 4 states. [2020-07-19 23:20:02,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:20:02,152 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2020-07-19 23:20:02,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-19 23:20:02,154 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-07-19 23:20:02,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:20:02,163 INFO L225 Difference]: With dead ends: 49 [2020-07-19 23:20:02,164 INFO L226 Difference]: Without dead ends: 31 [2020-07-19 23:20:02,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-19 23:20:02,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-07-19 23:20:02,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-07-19 23:20:02,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-07-19 23:20:02,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-07-19 23:20:02,209 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 37 [2020-07-19 23:20:02,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:20:02,211 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-07-19 23:20:02,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-19 23:20:02,211 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-07-19 23:20:02,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-19 23:20:02,213 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:20:02,214 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:20:02,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 23:20:02,214 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:20:02,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:20:02,215 INFO L82 PathProgramCache]: Analyzing trace with hash -213153012, now seen corresponding path program 1 times [2020-07-19 23:20:02,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:20:02,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002110527] [2020-07-19 23:20:02,216 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3c3e54db [2020-07-19 23:20:02,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:20:02,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:20:02,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:20:02,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:20:02,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:20:02,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:20:02,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:20:02,581 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-19 23:20:02,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002110527] [2020-07-19 23:20:02,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711243967] [2020-07-19 23:20:02,583 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2b7634e6 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 23:20:02,720 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2b7634e6 issued 3 check-sat command(s) [2020-07-19 23:20:02,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-19 23:20:02,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 53 conjunts are in the unsatisfiable core [2020-07-19 23:20:02,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 23:20:02,916 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-19 23:20:02,984 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-19 23:20:03,029 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2020-07-19 23:20:03,031 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-19 23:20:03,035 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2020-07-19 23:20:03,036 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-19 23:20:03,048 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-19 23:20:03,049 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-19 23:20:03,050 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:43, output treesize:5 [2020-07-19 23:20:03,076 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-19 23:20:03,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 23:20:03,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15] total 21 [2020-07-19 23:20:03,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412582319] [2020-07-19 23:20:03,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-07-19 23:20:03,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:20:03,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-07-19 23:20:03,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2020-07-19 23:20:03,081 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 21 states. [2020-07-19 23:20:04,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:20:04,680 INFO L93 Difference]: Finished difference Result 94 states and 115 transitions. [2020-07-19 23:20:04,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-07-19 23:20:04,682 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 38 [2020-07-19 23:20:04,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:20:04,692 INFO L225 Difference]: With dead ends: 94 [2020-07-19 23:20:04,692 INFO L226 Difference]: Without dead ends: 86 [2020-07-19 23:20:04,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=206, Invalid=1200, Unknown=0, NotChecked=0, Total=1406 [2020-07-19 23:20:04,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-07-19 23:20:04,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 43. [2020-07-19 23:20:04,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-07-19 23:20:04,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 54 transitions. [2020-07-19 23:20:04,729 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 54 transitions. Word has length 38 [2020-07-19 23:20:04,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:20:04,730 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 54 transitions. [2020-07-19 23:20:04,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-07-19 23:20:04,730 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 54 transitions. [2020-07-19 23:20:04,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-19 23:20:04,734 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:20:04,735 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] [2020-07-19 23:20:04,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-19 23:20:04,936 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:20:04,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:20:04,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1234221366, now seen corresponding path program 1 times [2020-07-19 23:20:04,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:20:04,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494569026] [2020-07-19 23:20:04,939 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3c3e54db [2020-07-19 23:20:04,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 23:20:04,996 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 23:20:05,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 23:20:05,050 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 23:20:05,086 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-19 23:20:05,087 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-19 23:20:05,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-19 23:20:05,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 11:20:05 BoogieIcfgContainer [2020-07-19 23:20:05,163 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-19 23:20:05,166 INFO L168 Benchmark]: Toolchain (without parser) took 4448.15 ms. Allocated memory was 139.5 MB in the beginning and 244.3 MB in the end (delta: 104.9 MB). Free memory was 104.1 MB in the beginning and 128.1 MB in the end (delta: -24.1 MB). Peak memory consumption was 80.8 MB. Max. memory is 7.1 GB. [2020-07-19 23:20:05,168 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-19 23:20:05,169 INFO L168 Benchmark]: CACSL2BoogieTranslator took 278.41 ms. Allocated memory is still 139.5 MB. Free memory was 103.6 MB in the beginning and 93.2 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-07-19 23:20:05,171 INFO L168 Benchmark]: Boogie Preprocessor took 116.47 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 93.2 MB in the beginning and 180.4 MB in the end (delta: -87.2 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2020-07-19 23:20:05,172 INFO L168 Benchmark]: RCFGBuilder took 325.21 ms. Allocated memory is still 202.9 MB. Free memory was 180.4 MB in the beginning and 161.9 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 7.1 GB. [2020-07-19 23:20:05,178 INFO L168 Benchmark]: TraceAbstraction took 3721.90 ms. Allocated memory was 202.9 MB in the beginning and 244.3 MB in the end (delta: 41.4 MB). Free memory was 161.3 MB in the beginning and 128.1 MB in the end (delta: 33.1 MB). Peak memory consumption was 74.6 MB. Max. memory is 7.1 GB. [2020-07-19 23:20:05,186 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 278.41 ms. Allocated memory is still 139.5 MB. Free memory was 103.6 MB in the beginning and 93.2 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 116.47 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 93.2 MB in the beginning and 180.4 MB in the end (delta: -87.2 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 325.21 ms. Allocated memory is still 202.9 MB. Free memory was 180.4 MB in the beginning and 161.9 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3721.90 ms. Allocated memory was 202.9 MB in the beginning and 244.3 MB in the end (delta: 41.4 MB). Free memory was 161.3 MB in the beginning and 128.1 MB in the end (delta: 33.1 MB). Peak memory consumption was 74.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 48]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L9] struct dummy d1, d2; VAL [\old(d1)=18, \old(d1)=22, \old(d2)=21, \old(d2)=19, d1={3:0}, d2={2:0}] [L32] CALL init() VAL [d1={3:0}, d2={2:0}] [L13] d1.a = __VERIFIER_nondet_int() [L14] d1.b = __VERIFIER_nondet_int() [L16] d2.a = __VERIFIER_nondet_int() [L17] d2.b = __VERIFIER_nondet_int() [L32] RET init() VAL [d1={3:0}, d2={2:0}] [L33] CALL, EXPR get_dummy() VAL [d1={3:0}, d2={2:0}] [L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [__VERIFIER_nondet_bool()=1, __VERIFIER_nondet_bool() ? &d1 : &d2={3:0}, d1={3:0}, d2={2:0}] [L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] RET, EXPR get_dummy() VAL [d1={3:0}, d2={2:0}, get_dummy()={3:0}] [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L33] CALL, EXPR get_dummy() VAL [d1={3:0}, d2={2:0}] [L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [__VERIFIER_nondet_bool()=1, __VERIFIER_nondet_bool() ? &d1 : &d2={3:0}, d1={3:0}, d2={2:0}] [L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] RET, EXPR get_dummy() VAL [d1={3:0}, d2={2:0}, get_dummy()={3:0}, pd1={3:0}] [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L33] CALL, EXPR get_dummy() VAL [d1={3:0}, d2={2:0}] [L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [__VERIFIER_nondet_bool()=0, __VERIFIER_nondet_bool() ? &d1 : &d2={2:0}, d1={3:0}, d2={2:0}] [L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] RET, EXPR get_dummy() VAL [d1={3:0}, d2={2:0}, get_dummy()={2:0}, pd1={3:0}, pd2={3:0}] [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L34] int i = __VERIFIER_nondet_int(); [L35] pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 [L35] EXPR (*pd2).a [L35] pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 VAL [(*pd2).a=5, d1={3:0}, d2={2:0}, i=0, pd1={3:0}, pd1 != 0 && pd1 == pd2 && (*pd2).a > 0=1, pd2={3:0}, pd3={2:0}] [L35] COND TRUE pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 [L36] int *pa = &pd1->a; [L37] EXPR pd3->a [L37] i = pd3->a - 10 [L38] EXPR \read(*pa) VAL [\read(*pa)=5, d1={3:0}, d2={2:0}, i=6, pa={3:0}, pd1={3:0}, pd2={3:0}, pd3={2:0}] [L38] COND FALSE !(i < *pa) [L41] CALL, EXPR check(pd2, i) VAL [\old(i)=6, d1={3:0}, d2={2:0}, s1={3:0}] [L27] EXPR s1->a [L27] return s1->a == i; [L41] RET, EXPR check(pd2, i) VAL [check(pd2, i)=0, d1={3:0}, d2={2:0}, i=6, pa={3:0}, pd1={3:0}, pd2={3:0}, pd3={2:0}] [L41] COND TRUE !check(pd2, i) [L48] __VERIFIER_error() VAL [d1={3:0}, d2={2:0}, i=6, pa={3:0}, pd1={3:0}, pd2={3:0}, pd3={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.5s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 63 SDtfs, 146 SDslu, 89 SDs, 0 SdLazy, 748 SolverSat, 84 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 43 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 151 NumberOfCodeBlocks, 143 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 110 ConstructedInterpolants, 0 QuantifiedInterpolants, 14257 SizeOfPredicates, 11 NumberOfNonLiveVariables, 169 ConjunctsInSsa, 53 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 30/36 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...