/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -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-d623d84 [2020-07-21 01:13:00,394 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 01:13:00,397 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 01:13:00,425 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 01:13:00,426 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 01:13:00,428 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 01:13:00,431 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 01:13:00,448 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 01:13:00,454 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 01:13:00,457 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 01:13:00,458 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 01:13:00,460 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 01:13:00,460 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 01:13:00,462 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 01:13:00,463 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 01:13:00,465 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 01:13:00,467 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 01:13:00,468 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 01:13:00,470 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 01:13:00,474 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 01:13:00,476 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 01:13:00,478 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 01:13:00,480 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 01:13:00,481 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 01:13:00,485 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 01:13:00,486 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 01:13:00,486 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 01:13:00,488 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 01:13:00,488 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 01:13:00,490 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 01:13:00,490 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 01:13:00,491 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 01:13:00,492 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 01:13:00,493 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 01:13:00,495 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 01:13:00,496 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 01:13:00,496 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 01:13:00,497 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 01:13:00,497 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 01:13:00,498 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 01:13:00,499 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 01:13:00,500 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 01:13:00,520 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 01:13:00,521 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 01:13:00,523 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 01:13:00,523 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 01:13:00,523 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 01:13:00,524 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 01:13:00,524 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 01:13:00,524 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 01:13:00,524 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 01:13:00,525 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 01:13:00,525 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 01:13:00,525 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 01:13:00,525 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 01:13:00,525 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 01:13:00,526 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 01:13:00,526 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 01:13:00,526 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 01:13:00,526 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 01:13:00,526 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 01:13:00,527 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 01:13:00,527 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 01:13:00,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 01:13:00,527 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 01:13:00,528 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 01:13:00,528 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 01:13:00,528 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 01:13:00,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:13:00,528 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 01:13:00,529 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 01:13:00,529 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS 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 [2020-07-21 01:13:00,906 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 01:13:00,928 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 01:13:00,934 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 01:13:00,937 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 01:13:00,938 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 01:13:00,939 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test22-2.c [2020-07-21 01:13:01,040 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/caa6f838e/f4c94097c2fd4f628f1465dfedf10320/FLAGc904acd7b [2020-07-21 01:13:01,702 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 01:13:01,707 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test22-2.c [2020-07-21 01:13:01,724 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/caa6f838e/f4c94097c2fd4f628f1465dfedf10320/FLAGc904acd7b [2020-07-21 01:13:01,979 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/caa6f838e/f4c94097c2fd4f628f1465dfedf10320 [2020-07-21 01:13:01,992 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 01:13:01,998 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 01:13:01,999 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 01:13:02,000 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 01:13:02,006 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 01:13:02,007 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:13:01" (1/1) ... [2020-07-21 01:13:02,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3883adbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:13:02, skipping insertion in model container [2020-07-21 01:13:02,013 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:13:01" (1/1) ... [2020-07-21 01:13:02,025 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 01:13:02,057 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 01:13:02,379 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:13:02,398 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 01:13:02,426 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:13:02,449 INFO L208 MainTranslator]: Completed translation [2020-07-21 01:13:02,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:13:02 WrapperNode [2020-07-21 01:13:02,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 01:13:02,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 01:13:02,452 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 01:13:02,452 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 01:13:02,577 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:13:02" (1/1) ... [2020-07-21 01:13:02,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:13:02" (1/1) ... [2020-07-21 01:13:02,608 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:13:02" (1/1) ... [2020-07-21 01:13:02,609 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:13:02" (1/1) ... [2020-07-21 01:13:02,629 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:13:02" (1/1) ... [2020-07-21 01:13:02,637 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:13:02" (1/1) ... [2020-07-21 01:13:02,641 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:13:02" (1/1) ... [2020-07-21 01:13:02,645 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 01:13:02,653 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 01:13:02,654 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 01:13:02,654 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 01:13:02,655 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:13:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 01:13:02,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 01:13:02,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 01:13:02,749 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-07-21 01:13:02,749 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2020-07-21 01:13:02,750 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-07-21 01:13:02,750 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 01:13:02,750 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 01:13:02,751 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 01:13:02,751 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-21 01:13:02,752 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-07-21 01:13:02,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 01:13:02,753 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2020-07-21 01:13:02,754 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-07-21 01:13:02,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 01:13:02,754 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 01:13:02,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 01:13:02,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 01:13:02,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-21 01:13:02,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 01:13:02,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 01:13:03,245 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 01:13:03,247 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 01:13:03,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:13:03 BoogieIcfgContainer [2020-07-21 01:13:03,254 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 01:13:03,256 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 01:13:03,258 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 01:13:03,263 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 01:13:03,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:13:01" (1/3) ... [2020-07-21 01:13:03,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@215f1efb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:13:03, skipping insertion in model container [2020-07-21 01:13:03,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:13:02" (2/3) ... [2020-07-21 01:13:03,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@215f1efb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:13:03, skipping insertion in model container [2020-07-21 01:13:03,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:13:03" (3/3) ... [2020-07-21 01:13:03,271 INFO L109 eAbstractionObserver]: Analyzing ICFG test22-2.c [2020-07-21 01:13:03,285 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 01:13:03,296 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 01:13:03,314 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 01:13:03,346 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 01:13:03,347 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 01:13:03,347 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 01:13:03,347 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 01:13:03,347 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 01:13:03,347 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 01:13:03,347 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 01:13:03,348 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 01:13:03,374 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-07-21 01:13:03,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-07-21 01:13:03,386 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:13:03,389 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] [2020-07-21 01:13:03,390 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:13:03,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:13:03,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1345538594, now seen corresponding path program 1 times [2020-07-21 01:13:03,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:13:03,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1018003678] [2020-07-21 01:13:03,425 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:13:03,633 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:13:03,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:13:03,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 01:13:03,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:13:03,700 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-21 01:13:03,701 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:13:03,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1018003678] [2020-07-21 01:13:03,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:13:03,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 01:13:03,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108997810] [2020-07-21 01:13:03,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 01:13:03,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:13:03,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 01:13:03,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 01:13:03,740 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 2 states. [2020-07-21 01:13:03,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:13:03,783 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2020-07-21 01:13:03,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 01:13:03,785 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 37 [2020-07-21 01:13:03,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:13:03,799 INFO L225 Difference]: With dead ends: 49 [2020-07-21 01:13:03,800 INFO L226 Difference]: Without dead ends: 31 [2020-07-21 01:13:03,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 01:13:03,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-07-21 01:13:03,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-07-21 01:13:03,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-07-21 01:13:03,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-07-21 01:13:03,876 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 37 [2020-07-21 01:13:03,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:13:03,880 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-07-21 01:13:03,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 01:13:03,880 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-07-21 01:13:03,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-21 01:13:03,883 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:13:03,884 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] [2020-07-21 01:13:04,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:13:04,101 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:13:04,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:13:04,103 INFO L82 PathProgramCache]: Analyzing trace with hash -213153012, now seen corresponding path program 1 times [2020-07-21 01:13:04,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:13:04,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507346797] [2020-07-21 01:13:04,104 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:13:04,255 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:13:04,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:13:04,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 57 conjunts are in the unsatisfiable core [2020-07-21 01:13:04,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:13:04,625 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2020-07-21 01:13:04,633 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 01:13:04,640 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 01:13:04,641 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 01:13:04,642 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:5 [2020-07-21 01:13:04,698 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-21 01:13:04,698 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:13:04,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507346797] [2020-07-21 01:13:04,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:13:04,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-07-21 01:13:04,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359995398] [2020-07-21 01:13:04,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-21 01:13:04,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:13:04,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-21 01:13:04,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-07-21 01:13:04,729 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 12 states. [2020-07-21 01:13:05,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:13:05,362 INFO L93 Difference]: Finished difference Result 69 states and 83 transitions. [2020-07-21 01:13:05,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-21 01:13:05,365 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 38 [2020-07-21 01:13:05,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:13:05,369 INFO L225 Difference]: With dead ends: 69 [2020-07-21 01:13:05,370 INFO L226 Difference]: Without dead ends: 61 [2020-07-21 01:13:05,372 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-07-21 01:13:05,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-07-21 01:13:05,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 43. [2020-07-21 01:13:05,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-07-21 01:13:05,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 54 transitions. [2020-07-21 01:13:05,417 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 54 transitions. Word has length 38 [2020-07-21 01:13:05,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:13:05,418 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 54 transitions. [2020-07-21 01:13:05,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-21 01:13:05,420 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 54 transitions. [2020-07-21 01:13:05,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-21 01:13:05,429 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:13:05,430 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] [2020-07-21 01:13:05,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:13:05,646 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:13:05,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:13:05,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1234221366, now seen corresponding path program 1 times [2020-07-21 01:13:05,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:13:05,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1581496734] [2020-07-21 01:13:05,649 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:13:05,744 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:13:05,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 01:13:05,746 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 01:13:05,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 01:13:05,778 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 01:13:05,834 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 01:13:05,835 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 01:13:06,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:13:06,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:13:06 BoogieIcfgContainer [2020-07-21 01:13:06,117 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 01:13:06,120 INFO L168 Benchmark]: Toolchain (without parser) took 4124.52 ms. Allocated memory was 137.9 MB in the beginning and 235.9 MB in the end (delta: 98.0 MB). Free memory was 102.0 MB in the beginning and 134.3 MB in the end (delta: -32.2 MB). Peak memory consumption was 65.8 MB. Max. memory is 7.1 GB. [2020-07-21 01:13:06,121 INFO L168 Benchmark]: CDTParser took 0.56 ms. Allocated memory is still 137.9 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-21 01:13:06,123 INFO L168 Benchmark]: CACSL2BoogieTranslator took 451.49 ms. Allocated memory is still 137.9 MB. Free memory was 101.6 MB in the beginning and 91.1 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-07-21 01:13:06,124 INFO L168 Benchmark]: Boogie Preprocessor took 193.63 ms. Allocated memory was 137.9 MB in the beginning and 203.4 MB in the end (delta: 65.5 MB). Free memory was 91.1 MB in the beginning and 181.2 MB in the end (delta: -90.1 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2020-07-21 01:13:06,125 INFO L168 Benchmark]: RCFGBuilder took 601.36 ms. Allocated memory is still 203.4 MB. Free memory was 180.5 MB in the beginning and 162.3 MB in the end (delta: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 7.1 GB. [2020-07-21 01:13:06,127 INFO L168 Benchmark]: TraceAbstraction took 2860.56 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 162.3 MB in the beginning and 134.3 MB in the end (delta: 28.0 MB). Peak memory consumption was 60.5 MB. Max. memory is 7.1 GB. [2020-07-21 01:13:06,132 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56 ms. Allocated memory is still 137.9 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 451.49 ms. Allocated memory is still 137.9 MB. Free memory was 101.6 MB in the beginning and 91.1 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 193.63 ms. Allocated memory was 137.9 MB in the beginning and 203.4 MB in the end (delta: 65.5 MB). Free memory was 91.1 MB in the beginning and 181.2 MB in the end (delta: -90.1 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 601.36 ms. Allocated memory is still 203.4 MB. Free memory was 180.5 MB in the beginning and 162.3 MB in the end (delta: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2860.56 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 162.3 MB in the beginning and 134.3 MB in the end (delta: 28.0 MB). Peak memory consumption was 60.5 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)=6, \old(d1)=9, \old(d2)=7, \old(d2)=11, 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()=-255, __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()=256, __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=1, 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)=1, d1={3:0}, d2={2:0}, i=2, 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)=2, 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=2, 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=2, 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: 2.7s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 78 SDtfs, 57 SDslu, 219 SDs, 0 SdLazy, 194 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 77 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s 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, 18 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 113 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 73 ConstructedInterpolants, 0 QuantifiedInterpolants, 9621 SizeOfPredicates, 12 NumberOfNonLiveVariables, 340 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 24/24 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...