/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/test26-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 01:13:16,677 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 01:13:16,680 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 01:13:16,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 01:13:16,695 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 01:13:16,697 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 01:13:16,698 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 01:13:16,701 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 01:13:16,703 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 01:13:16,704 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 01:13:16,706 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 01:13:16,708 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 01:13:16,708 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 01:13:16,710 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 01:13:16,712 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 01:13:16,713 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 01:13:16,714 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 01:13:16,716 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 01:13:16,718 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 01:13:16,721 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 01:13:16,724 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 01:13:16,726 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 01:13:16,728 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 01:13:16,730 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 01:13:16,734 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 01:13:16,748 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 01:13:16,749 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 01:13:16,751 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 01:13:16,752 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 01:13:16,769 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 01:13:16,770 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 01:13:16,771 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 01:13:16,771 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 01:13:16,771 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 01:13:16,772 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 01:13:16,772 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 01:13:16,772 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 01:13:16,772 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 01:13:16,772 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 01:13:16,773 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 01:13:16,773 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 01:13:16,773 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 01:13:16,773 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 01:13:16,773 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 01:13:16,774 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 01:13:16,774 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 01:13:16,774 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 01:13:16,774 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 01:13:16,774 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 01:13:16,775 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 01:13:16,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 01:13:16,775 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 01:13:16,775 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 01:13:16,775 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 01:13:16,776 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 01:13:16,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:13:16,776 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 01:13:16,776 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 01:13:16,776 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 01:13:17,190 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 01:13:17,213 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 01:13:17,219 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 01:13:17,222 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 01:13:17,223 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 01:13:17,224 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test26-2.c [2020-07-21 01:13:17,332 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30ea55d51/a64453cd67974617b1bbdd72e104ead4/FLAGaabbc0166 [2020-07-21 01:13:18,068 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 01:13:18,068 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test26-2.c [2020-07-21 01:13:18,076 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30ea55d51/a64453cd67974617b1bbdd72e104ead4/FLAGaabbc0166 [2020-07-21 01:13:18,378 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30ea55d51/a64453cd67974617b1bbdd72e104ead4 [2020-07-21 01:13:18,396 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 01:13:18,402 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 01:13:18,404 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 01:13:18,404 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 01:13:18,410 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 01:13:18,412 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:13:18" (1/1) ... [2020-07-21 01:13:18,418 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@509fad81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:13:18, skipping insertion in model container [2020-07-21 01:13:18,418 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:13:18" (1/1) ... [2020-07-21 01:13:18,430 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 01:13:18,459 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 01:13:18,718 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:13:18,740 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 01:13:18,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:13:18,793 INFO L208 MainTranslator]: Completed translation [2020-07-21 01:13:18,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:13:18 WrapperNode [2020-07-21 01:13:18,794 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 01:13:18,797 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 01:13:18,797 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 01:13:18,797 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 01:13:18,952 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:13:18" (1/1) ... [2020-07-21 01:13:18,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:13:18" (1/1) ... [2020-07-21 01:13:18,967 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:13:18" (1/1) ... [2020-07-21 01:13:18,969 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:13:18" (1/1) ... [2020-07-21 01:13:18,992 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:13:18" (1/1) ... [2020-07-21 01:13:18,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:13:18" (1/1) ... [2020-07-21 01:13:19,005 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:13:18" (1/1) ... [2020-07-21 01:13:19,008 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 01:13:19,009 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 01:13:19,009 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 01:13:19,010 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 01:13:19,011 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:13:18" (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 01:13:19,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 01:13:19,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 01:13:19,112 INFO L138 BoogieDeclarations]: Found implementation of procedure assign [2020-07-21 01:13:19,113 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 01:13:19,113 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 01:13:19,113 INFO L130 BoogieDeclarations]: Found specification of procedure assign [2020-07-21 01:13:19,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 01:13:19,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 01:13:19,114 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 01:13:19,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 01:13:19,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 01:13:19,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-21 01:13:19,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 01:13:19,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 01:13:19,432 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 01:13:19,433 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 01:13:19,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:13:19 BoogieIcfgContainer [2020-07-21 01:13:19,441 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 01:13:19,443 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 01:13:19,443 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 01:13:19,449 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 01:13:19,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:13:18" (1/3) ... [2020-07-21 01:13:19,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@395592bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:13:19, skipping insertion in model container [2020-07-21 01:13:19,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:13:18" (2/3) ... [2020-07-21 01:13:19,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@395592bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:13:19, skipping insertion in model container [2020-07-21 01:13:19,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:13:19" (3/3) ... [2020-07-21 01:13:19,456 INFO L109 eAbstractionObserver]: Analyzing ICFG test26-2.c [2020-07-21 01:13:19,474 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 01:13:19,489 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 01:13:19,515 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 01:13:19,567 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 01:13:19,567 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 01:13:19,567 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 01:13:19,568 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 01:13:19,568 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 01:13:19,568 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 01:13:19,568 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 01:13:19,568 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 01:13:19,617 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-07-21 01:13:19,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-21 01:13:19,634 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:13:19,637 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:13:19,639 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:13:19,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:13:19,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1573149608, now seen corresponding path program 1 times [2020-07-21 01:13:19,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:13:19,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1996918641] [2020-07-21 01:13:19,677 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 01:13:19,847 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:13:19,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 01:13:19,849 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 01:13:19,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 01:13:19,873 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 01:13:19,910 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 01:13:19,911 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 01:13:20,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:13:20,161 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 7 could not be translated for associated CType STRUCT~~dummy?a~INT?b~INT# [2020-07-21 01:13:20,163 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 5 could not be translated for associated CType STRUCT~~dummy?a~INT?b~INT# [2020-07-21 01:13:20,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:13:20 BoogieIcfgContainer [2020-07-21 01:13:20,180 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 01:13:20,186 INFO L168 Benchmark]: Toolchain (without parser) took 1785.30 ms. Allocated memory was 144.2 MB in the beginning and 203.4 MB in the end (delta: 59.2 MB). Free memory was 100.8 MB in the beginning and 147.6 MB in the end (delta: -46.9 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-07-21 01:13:20,188 INFO L168 Benchmark]: CDTParser took 0.78 ms. Allocated memory is still 144.2 MB. Free memory was 119.1 MB in the beginning and 118.9 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-21 01:13:20,189 INFO L168 Benchmark]: CACSL2BoogieTranslator took 392.12 ms. Allocated memory is still 144.2 MB. Free memory was 100.3 MB in the beginning and 90.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-07-21 01:13:20,190 INFO L168 Benchmark]: Boogie Preprocessor took 211.97 ms. Allocated memory was 144.2 MB in the beginning and 203.4 MB in the end (delta: 59.2 MB). Free memory was 90.4 MB in the beginning and 181.5 MB in the end (delta: -91.1 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-07-21 01:13:20,192 INFO L168 Benchmark]: RCFGBuilder took 431.76 ms. Allocated memory is still 203.4 MB. Free memory was 181.5 MB in the beginning and 168.4 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-07-21 01:13:20,193 INFO L168 Benchmark]: TraceAbstraction took 737.74 ms. Allocated memory is still 203.4 MB. Free memory was 167.8 MB in the beginning and 147.6 MB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2020-07-21 01:13:20,198 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.78 ms. Allocated memory is still 144.2 MB. Free memory was 119.1 MB in the beginning and 118.9 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 392.12 ms. Allocated memory is still 144.2 MB. Free memory was 100.3 MB in the beginning and 90.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 211.97 ms. Allocated memory was 144.2 MB in the beginning and 203.4 MB in the end (delta: 59.2 MB). Free memory was 90.4 MB in the beginning and 181.5 MB in the end (delta: -91.1 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 431.76 ms. Allocated memory is still 203.4 MB. Free memory was 181.5 MB in the beginning and 168.4 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 737.74 ms. Allocated memory is still 203.4 MB. Free memory was 167.8 MB in the beginning and 147.6 MB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 7 could not be translated for associated CType STRUCT~~dummy?a~INT?b~INT# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 5 could not be translated for associated CType STRUCT~~dummy?a~INT?b~INT# * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 24]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L3-L5] struct dummy { int a, b; } global = {0, 1}; VAL [\old(global)=null, \old(global)=null, global={2:0}] [L14] struct dummy *pd = &global; VAL [global={2:0}, pd={2:0}] [L16] CALL assign(&pd->b, &pd->b) VAL [global={2:0}, pa={2:4}, pb={2:4}] [L9] EXPR \read(*pb) [L9] *pa = *pb [L16] RET assign(&pd->b, &pd->b) VAL [global={2:0}, pd={2:0}] [L18] EXPR pd->a [L18] EXPR global.b VAL [global={2:0}, global.b=1, pd={2:0}, pd->a=0] [L18] COND TRUE pd->a != global.b [L24] __VERIFIER_error() VAL [global={2:0}, pd={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 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...