/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/test08.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 01:12:27,829 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 01:12:27,832 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 01:12:27,847 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 01:12:27,847 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 01:12:27,849 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 01:12:27,850 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 01:12:27,853 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 01:12:27,855 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 01:12:27,855 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 01:12:27,857 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 01:12:27,858 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 01:12:27,858 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 01:12:27,859 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 01:12:27,861 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 01:12:27,862 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 01:12:27,863 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 01:12:27,864 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 01:12:27,866 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 01:12:27,868 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 01:12:27,870 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 01:12:27,871 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 01:12:27,873 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 01:12:27,874 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 01:12:27,877 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 01:12:27,877 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 01:12:27,877 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 01:12:27,879 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 01:12:27,879 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 01:12:27,880 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 01:12:27,880 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 01:12:27,881 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 01:12:27,882 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 01:12:27,883 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 01:12:27,884 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 01:12:27,884 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 01:12:27,885 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 01:12:27,885 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 01:12:27,885 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 01:12:27,887 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 01:12:27,887 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 01:12:27,888 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 01:12:27,910 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 01:12:27,910 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 01:12:27,912 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 01:12:27,913 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 01:12:27,913 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 01:12:27,913 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 01:12:27,913 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 01:12:27,914 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 01:12:27,914 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 01:12:27,914 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 01:12:27,914 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 01:12:27,914 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 01:12:27,915 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 01:12:27,915 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 01:12:27,915 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 01:12:27,916 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 01:12:27,917 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 01:12:27,917 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 01:12:27,917 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 01:12:27,917 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 01:12:27,918 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 01:12:27,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 01:12:27,918 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 01:12:27,918 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 01:12:27,918 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 01:12:27,919 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 01:12:27,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:12:27,919 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 01:12:27,919 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 01:12:27,919 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 01:12:28,237 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 01:12:28,253 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 01:12:28,258 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 01:12:28,260 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 01:12:28,260 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 01:12:28,261 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test08.c [2020-07-21 01:12:28,339 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da43f2975/53231374669044dab5be0c65b443faef/FLAGe0f58eab4 [2020-07-21 01:12:28,892 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 01:12:28,893 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test08.c [2020-07-21 01:12:28,902 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da43f2975/53231374669044dab5be0c65b443faef/FLAGe0f58eab4 [2020-07-21 01:12:29,230 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da43f2975/53231374669044dab5be0c65b443faef [2020-07-21 01:12:29,245 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 01:12:29,250 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 01:12:29,255 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 01:12:29,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 01:12:29,261 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 01:12:29,262 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:12:29" (1/1) ... [2020-07-21 01:12:29,267 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@797d48eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:12:29, skipping insertion in model container [2020-07-21 01:12:29,267 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:12:29" (1/1) ... [2020-07-21 01:12:29,281 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 01:12:29,303 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 01:12:29,551 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:12:29,576 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 01:12:29,600 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:12:29,626 INFO L208 MainTranslator]: Completed translation [2020-07-21 01:12:29,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:12:29 WrapperNode [2020-07-21 01:12:29,628 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 01:12:29,629 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 01:12:29,629 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 01:12:29,631 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 01:12:29,787 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:12:29" (1/1) ... [2020-07-21 01:12:29,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:12:29" (1/1) ... [2020-07-21 01:12:29,801 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:12:29" (1/1) ... [2020-07-21 01:12:29,802 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:12:29" (1/1) ... [2020-07-21 01:12:29,821 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:12:29" (1/1) ... [2020-07-21 01:12:29,825 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:12:29" (1/1) ... [2020-07-21 01:12:29,832 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:12:29" (1/1) ... [2020-07-21 01:12:29,844 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 01:12:29,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 01:12:29,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 01:12:29,845 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 01:12:29,847 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:12:29" (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 01:12:29,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 01:12:29,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 01:12:29,938 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-07-21 01:12:29,938 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 01:12:29,938 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 01:12:29,938 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-07-21 01:12:29,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 01:12:29,939 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 01:12:29,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 01:12:29,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 01:12:29,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 01:12:29,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-21 01:12:29,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 01:12:29,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 01:12:30,241 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 01:12:30,241 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 01:12:30,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:12:30 BoogieIcfgContainer [2020-07-21 01:12:30,250 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 01:12:30,265 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 01:12:30,266 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 01:12:30,278 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 01:12:30,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:12:29" (1/3) ... [2020-07-21 01:12:30,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15644a66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:12:30, skipping insertion in model container [2020-07-21 01:12:30,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:12:29" (2/3) ... [2020-07-21 01:12:30,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15644a66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:12:30, skipping insertion in model container [2020-07-21 01:12:30,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:12:30" (3/3) ... [2020-07-21 01:12:30,294 INFO L109 eAbstractionObserver]: Analyzing ICFG test08.c [2020-07-21 01:12:30,312 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 01:12:30,321 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 01:12:30,343 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 01:12:30,374 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 01:12:30,374 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 01:12:30,375 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 01:12:30,375 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 01:12:30,375 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 01:12:30,376 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 01:12:30,376 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 01:12:30,376 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 01:12:30,399 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-07-21 01:12:30,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-21 01:12:30,413 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:12:30,420 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:12:30,421 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:12:30,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:12:30,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1889415219, now seen corresponding path program 1 times [2020-07-21 01:12:30,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:12:30,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [249732280] [2020-07-21 01:12:30,438 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 01:12:30,600 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:12:30,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 01:12:30,602 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 01:12:30,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 01:12:30,631 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 01:12:30,674 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 01:12:30,678 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 01:12:30,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:12:30,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:12:30 BoogieIcfgContainer [2020-07-21 01:12:30,943 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 01:12:30,947 INFO L168 Benchmark]: Toolchain (without parser) took 1698.07 ms. Allocated memory was 144.2 MB in the beginning and 204.5 MB in the end (delta: 60.3 MB). Free memory was 100.9 MB in the beginning and 142.6 MB in the end (delta: -41.7 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. [2020-07-21 01:12:30,949 INFO L168 Benchmark]: CDTParser took 0.31 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: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-07-21 01:12:30,950 INFO L168 Benchmark]: CACSL2BoogieTranslator took 373.83 ms. Allocated memory is still 144.2 MB. Free memory was 100.5 MB in the beginning and 90.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-07-21 01:12:30,951 INFO L168 Benchmark]: Boogie Preprocessor took 215.10 ms. Allocated memory was 144.2 MB in the beginning and 204.5 MB in the end (delta: 60.3 MB). Free memory was 90.7 MB in the beginning and 182.5 MB in the end (delta: -91.8 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-07-21 01:12:30,952 INFO L168 Benchmark]: RCFGBuilder took 405.81 ms. Allocated memory is still 204.5 MB. Free memory was 182.5 MB in the beginning and 167.3 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. [2020-07-21 01:12:30,953 INFO L168 Benchmark]: TraceAbstraction took 678.27 ms. Allocated memory is still 204.5 MB. Free memory was 167.3 MB in the beginning and 142.6 MB in the end (delta: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. [2020-07-21 01:12:30,958 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 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: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 373.83 ms. Allocated memory is still 144.2 MB. Free memory was 100.5 MB in the beginning and 90.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 215.10 ms. Allocated memory was 144.2 MB in the beginning and 204.5 MB in the end (delta: 60.3 MB). Free memory was 90.7 MB in the beginning and 182.5 MB in the end (delta: -91.8 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 405.81 ms. Allocated memory is still 204.5 MB. Free memory was 182.5 MB in the beginning and 167.3 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 678.27 ms. Allocated memory is still 204.5 MB. Free memory was 167.3 MB in the beginning and 142.6 MB in the end (delta: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 36]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L4] int a, b; [L5] int *p1, *p2; VAL [\old(a)=11, \old(a)=12, \old(b)=10, \old(b)=9, \old(p1)=7, \old(p1)=14, \old(p2)=13, \old(p2)=6, a={2:0}, b={3:0}, p1={0:0}, p2={0:0}] [L19] p1 = &a [L20] p2 = &b [L22] b = 1 [L23] a = 5 [L25] EXPR \read(a) [L25] a-- [L27] CALL, EXPR f() VAL [\old(p1)=0, \old(p1)=2, \old(p2)=0, \old(p2)=0, a={2:0}, b={3:0}, p1={2:0}, p2={3:0}] [L8] EXPR \read(*p1) [L8] EXPR \read(*p2) [L8] EXPR \read(a) [L8] int v = *p1 + *p2 - a; [L9] COND TRUE v == 1 [L10] p1 = p2 [L11] return v; VAL [\old(p1)=0, \old(p1)=2, \old(p2)=0, \old(p2)=0, \result=1, a={2:0}, b={3:0}, p1={3:0}, p2={3:0}, v=1] [L27] RET, EXPR f() VAL [\old(p1)=0, \old(p1)=0, \old(p2)=0, \old(p2)=0, a={2:0}, b={3:0}, f()=1, p1={3:0}, p2={3:0}] [L27] a = f() [L29] EXPR \read(a) VAL [\old(p1)=0, \old(p1)=0, \old(p2)=0, \old(p2)=0, \read(a)=1, a={2:0}, b={3:0}, p1={3:0}, p2={3:0}] [L29] COND TRUE a && p1 == p2 [L36] __VERIFIER_error() VAL [\old(p1)=0, \old(p1)=0, \old(p2)=0, \old(p2)=0, a={2:0}, b={3:0}, p1={3:0}, p2={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 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=19occurred 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, 14 NumberOfCodeBlocks, 14 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...