/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 NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test17.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 11:21:48,790 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 11:21:48,792 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 11:21:48,805 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 11:21:48,806 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 11:21:48,807 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 11:21:48,810 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 11:21:48,813 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 11:21:48,821 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 11:21:48,822 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 11:21:48,823 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 11:21:48,824 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 11:21:48,826 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 11:21:48,827 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 11:21:48,830 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 11:21:48,832 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 11:21:48,832 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 11:21:48,833 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 11:21:48,838 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 11:21:48,842 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 11:21:48,843 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 11:21:48,846 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 11:21:48,848 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 11:21:48,849 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 11:21:48,854 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 11:21:48,854 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 11:21:48,854 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 11:21:48,856 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 11:21:48,856 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 11:21:48,857 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 11:21:48,857 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 11:21:48,859 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 11:21:48,859 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 11:21:48,862 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 11:21:48,864 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 11:21:48,865 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 11:21:48,866 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 11:21:48,866 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 11:21:48,866 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 11:21:48,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 11:21:48,868 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 11:21:48,869 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 11:21:48,907 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 11:21:48,908 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 11:21:48,913 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 11:21:48,913 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 11:21:48,913 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 11:21:48,914 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 11:21:48,914 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 11:21:48,914 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 11:21:48,914 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 11:21:48,914 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 11:21:48,914 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 11:21:48,915 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 11:21:48,915 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 11:21:48,915 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 11:21:48,916 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 11:21:48,916 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 11:21:48,916 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 11:21:48,917 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 11:21:48,917 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 11:21:48,917 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 11:21:48,917 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 11:21:48,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 11:21:48,918 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 11:21:48,918 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 11:21:48,918 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 11:21:48,918 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 11:21:48,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:21:48,919 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 11:21:48,919 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 11:21:48,919 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 -> NOT_INCREMENTALLY [2020-07-21 11:21:49,178 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 11:21:49,191 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 11:21:49,195 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 11:21:49,196 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 11:21:49,196 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 11:21:49,197 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test17.c [2020-07-21 11:21:49,278 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e070ba84/1b81f6a7a86d405b88a1a87d483c6e2a/FLAGf91e17c07 [2020-07-21 11:21:49,762 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 11:21:49,763 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test17.c [2020-07-21 11:21:49,769 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e070ba84/1b81f6a7a86d405b88a1a87d483c6e2a/FLAGf91e17c07 [2020-07-21 11:21:50,137 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2e070ba84/1b81f6a7a86d405b88a1a87d483c6e2a [2020-07-21 11:21:50,146 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 11:21:50,149 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 11:21:50,150 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 11:21:50,150 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 11:21:50,154 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 11:21:50,155 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:21:50" (1/1) ... [2020-07-21 11:21:50,158 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b58d8f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:21:50, skipping insertion in model container [2020-07-21 11:21:50,158 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:21:50" (1/1) ... [2020-07-21 11:21:50,166 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 11:21:50,183 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 11:21:50,369 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 11:21:50,375 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 11:21:50,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 11:21:50,416 INFO L208 MainTranslator]: Completed translation [2020-07-21 11:21:50,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:21:50 WrapperNode [2020-07-21 11:21:50,417 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 11:21:50,418 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 11:21:50,418 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 11:21:50,418 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 11:21:50,434 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:21:50" (1/1) ... [2020-07-21 11:21:50,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:21:50" (1/1) ... [2020-07-21 11:21:50,574 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:21:50" (1/1) ... [2020-07-21 11:21:50,574 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:21:50" (1/1) ... [2020-07-21 11:21:50,581 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:21:50" (1/1) ... [2020-07-21 11:21:50,583 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:21:50" (1/1) ... [2020-07-21 11:21:50,584 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:21:50" (1/1) ... [2020-07-21 11:21:50,587 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 11:21:50,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 11:21:50,595 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 11:21:50,595 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 11:21:50,596 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:21:50" (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 11:21:50,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 11:21:50,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 11:21:50,669 INFO L138 BoogieDeclarations]: Found implementation of procedure equal [2020-07-21 11:21:50,669 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 11:21:50,669 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 11:21:50,669 INFO L130 BoogieDeclarations]: Found specification of procedure equal [2020-07-21 11:21:50,669 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 11:21:50,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 11:21:50,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 11:21:50,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-21 11:21:50,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 11:21:50,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 11:21:50,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 11:21:50,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 11:21:50,849 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 11:21:50,850 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 11:21:50,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:21:50 BoogieIcfgContainer [2020-07-21 11:21:50,854 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 11:21:50,855 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 11:21:50,855 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 11:21:50,859 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 11:21:50,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:21:50" (1/3) ... [2020-07-21 11:21:50,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@530ee80c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:21:50, skipping insertion in model container [2020-07-21 11:21:50,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:21:50" (2/3) ... [2020-07-21 11:21:50,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@530ee80c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:21:50, skipping insertion in model container [2020-07-21 11:21:50,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:21:50" (3/3) ... [2020-07-21 11:21:50,868 INFO L109 eAbstractionObserver]: Analyzing ICFG test17.c [2020-07-21 11:21:50,892 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 11:21:50,907 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 11:21:50,946 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 11:21:50,978 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 11:21:50,978 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 11:21:50,978 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 11:21:50,978 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 11:21:50,978 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 11:21:50,979 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 11:21:50,979 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 11:21:50,979 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 11:21:51,017 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-07-21 11:21:51,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-07-21 11:21:51,024 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:21:51,026 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:21:51,027 INFO L427 AbstractCegarLoop]: === Iteration 1 === [equalErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:21:51,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:21:51,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1534444928, now seen corresponding path program 1 times [2020-07-21 11:21:51,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:21:51,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563276570] [2020-07-21 11:21:51,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 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 11:21:51,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:21:51,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 17 conjunts are in the unsatisfiable core [2020-07-21 11:21:51,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:21:51,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:21:51,241 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:21:51,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563276570] [2020-07-21 11:21:51,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:21:51,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 11:21:51,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436612868] [2020-07-21 11:21:51,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 11:21:51,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:21:51,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 11:21:51,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 11:21:51,264 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 4 states. [2020-07-21 11:21:51,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:21:51,330 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2020-07-21 11:21:51,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 11:21:51,336 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-07-21 11:21:51,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:21:51,342 INFO L225 Difference]: With dead ends: 24 [2020-07-21 11:21:51,343 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 11:21:51,347 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:21:51,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 11:21:51,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 11:21:51,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 11:21:51,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 11:21:51,374 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2020-07-21 11:21:51,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:21:51,374 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 11:21:51,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 11:21:51,375 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 11:21:51,375 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 11:21:51,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:21:51,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 11:21:51,659 INFO L268 CegarLoopResult]: For program point equalEXIT(lines 4 12) no Hoare annotation was computed. [2020-07-21 11:21:51,659 INFO L271 CegarLoopResult]: At program point equalENTRY(lines 4 12) the Hoare annotation is: true [2020-07-21 11:21:51,660 INFO L268 CegarLoopResult]: For program point equalFINAL(lines 4 12) no Hoare annotation was computed. [2020-07-21 11:21:51,660 INFO L264 CegarLoopResult]: At program point L6(lines 4 12) the Hoare annotation is: (or (not (= |equal_#in~a.base| |equal_#in~b.base|)) (not (= |equal_#in~a.offset| |equal_#in~b.offset|))) [2020-07-21 11:21:51,660 INFO L268 CegarLoopResult]: For program point L5(lines 5 7) no Hoare annotation was computed. [2020-07-21 11:21:51,660 INFO L268 CegarLoopResult]: For program point equalErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2020-07-21 11:21:51,662 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 11:21:51,662 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-21 11:21:51,663 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 11:21:51,663 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 11:21:51,663 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 11:21:51,664 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 11:21:51,664 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 11:21:51,664 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-07-21 11:21:51,665 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 16 19) the Hoare annotation is: true [2020-07-21 11:21:51,665 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 16 19) no Hoare annotation was computed. [2020-07-21 11:21:51,665 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 16 19) no Hoare annotation was computed. [2020-07-21 11:21:51,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 11:21:51 BoogieIcfgContainer [2020-07-21 11:21:51,693 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 11:21:51,696 INFO L168 Benchmark]: Toolchain (without parser) took 1547.09 ms. Allocated memory was 138.9 MB in the beginning and 207.1 MB in the end (delta: 68.2 MB). Free memory was 101.7 MB in the beginning and 140.5 MB in the end (delta: -38.8 MB). Peak memory consumption was 29.3 MB. Max. memory is 7.1 GB. [2020-07-21 11:21:51,698 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 138.9 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-07-21 11:21:51,699 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.54 ms. Allocated memory is still 138.9 MB. Free memory was 101.5 MB in the beginning and 92.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-07-21 11:21:51,700 INFO L168 Benchmark]: Boogie Preprocessor took 169.22 ms. Allocated memory was 138.9 MB in the beginning and 207.1 MB in the end (delta: 68.2 MB). Free memory was 92.0 MB in the beginning and 185.8 MB in the end (delta: -93.8 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2020-07-21 11:21:51,701 INFO L168 Benchmark]: RCFGBuilder took 265.65 ms. Allocated memory is still 207.1 MB. Free memory was 185.8 MB in the beginning and 172.9 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-07-21 11:21:51,702 INFO L168 Benchmark]: TraceAbstraction took 838.10 ms. Allocated memory is still 207.1 MB. Free memory was 172.3 MB in the beginning and 140.5 MB in the end (delta: 31.8 MB). Peak memory consumption was 31.8 MB. Max. memory is 7.1 GB. [2020-07-21 11:21:51,706 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 138.9 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 267.54 ms. Allocated memory is still 138.9 MB. Free memory was 101.5 MB in the beginning and 92.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 169.22 ms. Allocated memory was 138.9 MB in the beginning and 207.1 MB in the end (delta: 68.2 MB). Free memory was 92.0 MB in the beginning and 185.8 MB in the end (delta: -93.8 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 265.65 ms. Allocated memory is still 207.1 MB. Free memory was 185.8 MB in the beginning and 172.9 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 838.10 ms. Allocated memory is still 207.1 MB. Free memory was 172.3 MB in the beginning and 140.5 MB in the end (delta: 31.8 MB). Peak memory consumption was 31.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 10]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 4]: Loop Invariant Derived loop invariant: !(a == b) || !(a == b) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 5 SDslu, 19 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 6 NumberOfFragments, 14 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 160 SizeOfPredicates, 10 NumberOfNonLiveVariables, 69 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 correct! Received shutdown request...