/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 NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test_cut_trace.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 16:20:22,278 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 16:20:22,281 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 16:20:22,292 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 16:20:22,293 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 16:20:22,294 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 16:20:22,295 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 16:20:22,297 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 16:20:22,299 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 16:20:22,300 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 16:20:22,301 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 16:20:22,302 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 16:20:22,302 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 16:20:22,303 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 16:20:22,304 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 16:20:22,305 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 16:20:22,306 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 16:20:22,307 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 16:20:22,309 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 16:20:22,311 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 16:20:22,312 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 16:20:22,313 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 16:20:22,314 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 16:20:22,315 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 16:20:22,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 16:20:22,318 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 16:20:22,319 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 16:20:22,320 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 16:20:22,320 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 16:20:22,321 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 16:20:22,321 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 16:20:22,322 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 16:20:22,323 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 16:20:22,324 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 16:20:22,325 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 16:20:22,325 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 16:20:22,326 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 16:20:22,326 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 16:20:22,326 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 16:20:22,327 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 16:20:22,328 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 16:20:22,329 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 16:20:22,344 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 16:20:22,344 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 16:20:22,345 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 16:20:22,346 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 16:20:22,346 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 16:20:22,346 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 16:20:22,346 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 16:20:22,347 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 16:20:22,347 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 16:20:22,347 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 16:20:22,347 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 16:20:22,347 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 16:20:22,348 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 16:20:22,348 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 16:20:22,348 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 16:20:22,348 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 16:20:22,348 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 16:20:22,349 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 16:20:22,349 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 16:20:22,349 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 16:20:22,349 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 16:20:22,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 16:20:22,350 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 16:20:22,350 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 16:20:22,350 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 16:20:22,350 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 16:20:22,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:20:22,351 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 16:20:22,351 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 16:20:22,351 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 -> NUM_VARIABLES 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 -> 2 [2020-07-21 16:20:22,642 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 16:20:22,662 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 16:20:22,667 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 16:20:22,668 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 16:20:22,669 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 16:20:22,671 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test_cut_trace.i [2020-07-21 16:20:22,768 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2dbed734f/549b70c4ffd6422986a56d8407f2832d/FLAG50d0d8c6b [2020-07-21 16:20:23,303 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 16:20:23,303 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test_cut_trace.i [2020-07-21 16:20:23,310 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2dbed734f/549b70c4ffd6422986a56d8407f2832d/FLAG50d0d8c6b [2020-07-21 16:20:23,680 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2dbed734f/549b70c4ffd6422986a56d8407f2832d [2020-07-21 16:20:23,692 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 16:20:23,695 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 16:20:23,696 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 16:20:23,696 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 16:20:23,700 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 16:20:23,702 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:20:23" (1/1) ... [2020-07-21 16:20:23,705 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a462c8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:20:23, skipping insertion in model container [2020-07-21 16:20:23,705 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:20:23" (1/1) ... [2020-07-21 16:20:23,713 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 16:20:23,731 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 16:20:23,913 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 16:20:23,919 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 16:20:23,935 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 16:20:23,951 INFO L208 MainTranslator]: Completed translation [2020-07-21 16:20:23,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:20:23 WrapperNode [2020-07-21 16:20:23,951 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 16:20:23,952 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 16:20:23,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 16:20:23,953 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 16:20:23,968 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:20:23" (1/1) ... [2020-07-21 16:20:23,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:20:23" (1/1) ... [2020-07-21 16:20:23,974 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:20:23" (1/1) ... [2020-07-21 16:20:23,974 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:20:23" (1/1) ... [2020-07-21 16:20:23,978 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:20:23" (1/1) ... [2020-07-21 16:20:23,981 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:20:23" (1/1) ... [2020-07-21 16:20:23,982 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:20:23" (1/1) ... [2020-07-21 16:20:23,983 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 16:20:23,984 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 16:20:23,984 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 16:20:23,984 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 16:20:23,985 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:20:23" (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 16:20:24,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 16:20:24,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 16:20:24,123 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-07-21 16:20:24,123 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 16:20:24,124 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 16:20:24,125 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-07-21 16:20:24,125 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 16:20:24,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 16:20:24,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 16:20:24,266 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 16:20:24,267 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 16:20:24,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:20:24 BoogieIcfgContainer [2020-07-21 16:20:24,271 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 16:20:24,272 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 16:20:24,273 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 16:20:24,276 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 16:20:24,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 04:20:23" (1/3) ... [2020-07-21 16:20:24,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@195a5757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:20:24, skipping insertion in model container [2020-07-21 16:20:24,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:20:23" (2/3) ... [2020-07-21 16:20:24,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@195a5757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:20:24, skipping insertion in model container [2020-07-21 16:20:24,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:20:24" (3/3) ... [2020-07-21 16:20:24,280 INFO L109 eAbstractionObserver]: Analyzing ICFG test_cut_trace.i [2020-07-21 16:20:24,292 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 16:20:24,300 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 16:20:24,315 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 16:20:24,342 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 16:20:24,342 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 16:20:24,342 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 16:20:24,342 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 16:20:24,342 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 16:20:24,343 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 16:20:24,343 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 16:20:24,343 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 16:20:24,363 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-07-21 16:20:24,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-07-21 16:20:24,370 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:20:24,371 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:20:24,372 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:20:24,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:20:24,379 INFO L82 PathProgramCache]: Analyzing trace with hash -417355086, now seen corresponding path program 1 times [2020-07-21 16:20:24,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:20:24,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2054095718] [2020-07-21 16:20:24,390 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 16:20:24,450 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:20:24,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:20:24,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 16:20:24,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:20:24,500 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 16:20:24,500 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:20:24,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2054095718] [2020-07-21 16:20:24,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:20:24,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 16:20:24,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338931197] [2020-07-21 16:20:24,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 16:20:24,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:20:24,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 16:20:24,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:20:24,520 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2020-07-21 16:20:24,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:20:24,546 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2020-07-21 16:20:24,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 16:20:24,552 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-07-21 16:20:24,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:20:24,561 INFO L225 Difference]: With dead ends: 29 [2020-07-21 16:20:24,561 INFO L226 Difference]: Without dead ends: 11 [2020-07-21 16:20:24,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:20:24,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-07-21 16:20:24,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-07-21 16:20:24,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-07-21 16:20:24,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2020-07-21 16:20:24,604 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 8 [2020-07-21 16:20:24,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:20:24,604 INFO L479 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2020-07-21 16:20:24,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 16:20:24,604 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2020-07-21 16:20:24,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-21 16:20:24,605 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:20:24,605 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:20:24,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:20:24,822 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:20:24,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:20:24,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1648524013, now seen corresponding path program 1 times [2020-07-21 16:20:24,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:20:24,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1276615698] [2020-07-21 16:20:24,824 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 16:20:24,847 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:20:24,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:20:24,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 16:20:24,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:20:24,889 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 16:20:24,890 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:20:24,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1276615698] [2020-07-21 16:20:24,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:20:24,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 16:20:24,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773969653] [2020-07-21 16:20:24,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 16:20:24,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:20:24,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 16:20:24,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 16:20:24,897 INFO L87 Difference]: Start difference. First operand 11 states and 10 transitions. Second operand 4 states. [2020-07-21 16:20:24,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:20:24,923 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2020-07-21 16:20:24,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 16:20:24,923 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-07-21 16:20:24,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:20:24,924 INFO L225 Difference]: With dead ends: 11 [2020-07-21 16:20:24,925 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 16:20:24,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 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 16:20:24,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 16:20:24,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 16:20:24,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 16:20:24,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 16:20:24,928 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-07-21 16:20:24,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:20:24,928 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 16:20:24,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 16:20:24,929 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 16:20:24,929 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 16:20:25,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:20:25,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 16:20:25,202 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-21 16:20:25,202 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 16:20:25,202 INFO L268 CegarLoopResult]: For program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-07-21 16:20:25,203 INFO L268 CegarLoopResult]: For program point __blast_assertEXIT(lines 4 7) no Hoare annotation was computed. [2020-07-21 16:20:25,203 INFO L268 CegarLoopResult]: For program point __blast_assertFINAL(lines 4 7) no Hoare annotation was computed. [2020-07-21 16:20:25,203 INFO L271 CegarLoopResult]: At program point __blast_assertENTRY(lines 4 7) the Hoare annotation is: true [2020-07-21 16:20:25,203 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 16:20:25,203 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 16:20:25,204 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 16:20:25,204 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 16:20:25,204 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 20) the Hoare annotation is: true [2020-07-21 16:20:25,204 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 20) no Hoare annotation was computed. [2020-07-21 16:20:25,205 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-07-21 16:20:25,205 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-07-21 16:20:25,205 INFO L264 CegarLoopResult]: At program point L18-2(line 18) the Hoare annotation is: false [2020-07-21 16:20:25,205 INFO L268 CegarLoopResult]: For program point L18-3(line 18) no Hoare annotation was computed. [2020-07-21 16:20:25,205 INFO L264 CegarLoopResult]: At program point L16-2(line 16) the Hoare annotation is: false [2020-07-21 16:20:25,206 INFO L268 CegarLoopResult]: For program point L16-3(line 16) no Hoare annotation was computed. [2020-07-21 16:20:25,206 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 20) no Hoare annotation was computed. [2020-07-21 16:20:25,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 04:20:25 BoogieIcfgContainer [2020-07-21 16:20:25,213 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 16:20:25,216 INFO L168 Benchmark]: Toolchain (without parser) took 1521.35 ms. Allocated memory was 145.2 MB in the beginning and 201.3 MB in the end (delta: 56.1 MB). Free memory was 103.5 MB in the beginning and 135.7 MB in the end (delta: -32.2 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-07-21 16:20:25,217 INFO L168 Benchmark]: CDTParser took 0.81 ms. Allocated memory is still 145.2 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-21 16:20:25,218 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.88 ms. Allocated memory is still 145.2 MB. Free memory was 103.0 MB in the beginning and 94.0 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB. [2020-07-21 16:20:25,219 INFO L168 Benchmark]: Boogie Preprocessor took 31.11 ms. Allocated memory is still 145.2 MB. Free memory was 94.0 MB in the beginning and 92.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-07-21 16:20:25,221 INFO L168 Benchmark]: RCFGBuilder took 287.20 ms. Allocated memory was 145.2 MB in the beginning and 201.3 MB in the end (delta: 56.1 MB). Free memory was 92.7 MB in the beginning and 171.0 MB in the end (delta: -78.4 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-07-21 16:20:25,222 INFO L168 Benchmark]: TraceAbstraction took 940.41 ms. Allocated memory is still 201.3 MB. Free memory was 170.4 MB in the beginning and 135.7 MB in the end (delta: 34.7 MB). Peak memory consumption was 34.7 MB. Max. memory is 7.1 GB. [2020-07-21 16:20:25,226 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.81 ms. Allocated memory is still 145.2 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 255.88 ms. Allocated memory is still 145.2 MB. Free memory was 103.0 MB in the beginning and 94.0 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.11 ms. Allocated memory is still 145.2 MB. Free memory was 94.0 MB in the beginning and 92.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 287.20 ms. Allocated memory was 145.2 MB in the beginning and 201.3 MB in the end (delta: 56.1 MB). Free memory was 92.7 MB in the beginning and 171.0 MB in the end (delta: -78.4 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 940.41 ms. Allocated memory is still 201.3 MB. Free memory was 170.4 MB in the beginning and 135.7 MB in the end (delta: 34.7 MB). Peak memory consumption was 34.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 7 SDslu, 16 SDs, 0 SdLazy, 6 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 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: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 7 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 198 SizeOfPredicates, 1 NumberOfNonLiveVariables, 38 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...