/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/structure_assignment.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 11:29:45,362 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-07-20 11:29:45,378 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 11:29:45,379 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 11:29:45,380 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 11:29:45,382 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 11:29:45,384 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 11:29:45,385 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 11:29:45,386 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 11:29:45,387 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 11:29:45,387 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 11:29:45,388 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 11:29:45,389 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 11:29:45,390 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 11:29:45,391 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 11:29:45,392 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 11:29:45,394 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 11:29:45,396 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 11:29:45,397 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 11:29:45,398 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 11:29:45,399 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 11:29:45,400 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 11:29:45,402 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 11:29:45,410 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 11:29:45,411 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 11:29:45,411 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 11:29:45,412 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 [2020-07-20 11:29:45,428 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 11:29:45,428 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 11:29:45,429 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 11:29:45,430 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 11:29:45,430 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 11:29:45,430 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 11:29:45,430 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 11:29:45,431 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 11:29:45,431 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 11:29:45,431 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 11:29:45,431 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 11:29:45,431 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 11:29:45,432 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 11:29:45,432 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 11:29:45,432 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 11:29:45,432 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 11:29:45,432 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 11:29:45,433 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 11:29:45,433 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 11:29:45,433 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 11:29:45,434 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 11:29:45,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:29:45,435 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 11:29:45,435 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 11:29:45,435 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 11:29:45,435 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 11:29:45,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:29:45,436 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 11:29:45,436 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 11:29:45,436 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 [2020-07-20 11:29:45,768 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 11:29:45,782 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 11:29:45,786 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 11:29:45,788 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 11:29:45,788 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 11:29:45,789 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/structure_assignment.i [2020-07-20 11:29:45,852 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90971987c/cf83af9604234ae78cc39f78f602470c/FLAGa49d3aaf5 [2020-07-20 11:29:46,346 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 11:29:46,347 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/structure_assignment.i [2020-07-20 11:29:46,355 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90971987c/cf83af9604234ae78cc39f78f602470c/FLAGa49d3aaf5 [2020-07-20 11:29:46,741 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90971987c/cf83af9604234ae78cc39f78f602470c [2020-07-20 11:29:46,752 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 11:29:46,755 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 11:29:46,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 11:29:46,757 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 11:29:46,760 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 11:29:46,761 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:29:46" (1/1) ... [2020-07-20 11:29:46,765 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fea6f8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:29:46, skipping insertion in model container [2020-07-20 11:29:46,765 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:29:46" (1/1) ... [2020-07-20 11:29:46,773 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 11:29:46,789 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 11:29:46,958 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:29:46,963 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 11:29:46,986 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:29:47,012 INFO L208 MainTranslator]: Completed translation [2020-07-20 11:29:47,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:29:47 WrapperNode [2020-07-20 11:29:47,013 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 11:29:47,014 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 11:29:47,014 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 11:29:47,015 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 11:29:47,119 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:29:47" (1/1) ... [2020-07-20 11:29:47,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:29:47" (1/1) ... [2020-07-20 11:29:47,129 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:29:47" (1/1) ... [2020-07-20 11:29:47,129 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:29:47" (1/1) ... [2020-07-20 11:29:47,144 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:29:47" (1/1) ... [2020-07-20 11:29:47,146 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:29:47" (1/1) ... [2020-07-20 11:29:47,147 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:29:47" (1/1) ... [2020-07-20 11:29:47,148 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 11:29:47,149 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 11:29:47,149 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 11:29:47,149 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 11:29:47,150 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:29:47" (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 [2020-07-20 11:29:47,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 11:29:47,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 11:29:47,223 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-07-20 11:29:47,224 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 11:29:47,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 11:29:47,224 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-07-20 11:29:47,224 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 11:29:47,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 11:29:47,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-20 11:29:47,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 11:29:47,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 11:29:47,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 11:29:47,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 11:29:47,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 11:29:47,431 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 11:29:47,431 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 11:29:47,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:29:47 BoogieIcfgContainer [2020-07-20 11:29:47,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 11:29:47,437 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 11:29:47,437 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 11:29:47,440 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 11:29:47,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 11:29:46" (1/3) ... [2020-07-20 11:29:47,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41f91d31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:29:47, skipping insertion in model container [2020-07-20 11:29:47,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:29:47" (2/3) ... [2020-07-20 11:29:47,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41f91d31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:29:47, skipping insertion in model container [2020-07-20 11:29:47,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:29:47" (3/3) ... [2020-07-20 11:29:47,444 INFO L109 eAbstractionObserver]: Analyzing ICFG structure_assignment.i [2020-07-20 11:29:47,465 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 11:29:47,476 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 11:29:47,494 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 11:29:47,526 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 11:29:47,527 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 11:29:47,527 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 11:29:47,527 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 11:29:47,527 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 11:29:47,527 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 11:29:47,527 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 11:29:47,528 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 11:29:47,549 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-07-20 11:29:47,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-07-20 11:29:47,556 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:29:47,557 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:29:47,557 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:29:47,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:29:47,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1215743292, now seen corresponding path program 1 times [2020-07-20 11:29:47,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:29:47,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [684690] [2020-07-20 11:29:47,574 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 [2020-07-20 11:29:47,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:29:47,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 11:29:47,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:29:47,746 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-07-20 11:29:47,748 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 11:29:47,761 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 11:29:47,762 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 11:29:47,762 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-07-20 11:29:47,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:29:47,772 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:29:47,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [684690] [2020-07-20 11:29:47,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:29:47,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:29:47,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011886588] [2020-07-20 11:29:47,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:29:47,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:29:47,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:29:47,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:29:47,794 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 3 states. [2020-07-20 11:29:47,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:29:47,836 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2020-07-20 11:29:47,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:29:47,840 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-07-20 11:29:47,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:29:47,849 INFO L225 Difference]: With dead ends: 22 [2020-07-20 11:29:47,849 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 11:29:47,857 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:29:47,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 11:29:47,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 11:29:47,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 11:29:47,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 11:29:47,892 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2020-07-20 11:29:47,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:29:47,893 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 11:29:47,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:29:47,893 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 11:29:47,893 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 11:29:48,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:29:48,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 11:29:48,150 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 11:29:48,150 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-20 11:29:48,150 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 11:29:48,151 INFO L268 CegarLoopResult]: For program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2020-07-20 11:29:48,151 INFO L268 CegarLoopResult]: For program point __blast_assertEXIT(lines 7 10) no Hoare annotation was computed. [2020-07-20 11:29:48,151 INFO L268 CegarLoopResult]: For program point __blast_assertFINAL(lines 7 10) no Hoare annotation was computed. [2020-07-20 11:29:48,151 INFO L271 CegarLoopResult]: At program point __blast_assertENTRY(lines 7 10) the Hoare annotation is: true [2020-07-20 11:29:48,152 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 11:29:48,152 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 11:29:48,152 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 11:29:48,152 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 11:29:48,152 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 19 26) the Hoare annotation is: true [2020-07-20 11:29:48,152 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 19 26) no Hoare annotation was computed. [2020-07-20 11:29:48,152 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 19 26) no Hoare annotation was computed. [2020-07-20 11:29:48,153 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-07-20 11:29:48,153 INFO L264 CegarLoopResult]: At program point L24-2(line 24) the Hoare annotation is: false [2020-07-20 11:29:48,153 INFO L268 CegarLoopResult]: For program point L24-3(line 24) no Hoare annotation was computed. [2020-07-20 11:29:48,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 11:29:48 BoogieIcfgContainer [2020-07-20 11:29:48,159 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 11:29:48,161 INFO L168 Benchmark]: Toolchain (without parser) took 1407.35 ms. Allocated memory was 134.2 MB in the beginning and 198.2 MB in the end (delta: 64.0 MB). Free memory was 97.5 MB in the beginning and 133.5 MB in the end (delta: -36.1 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. [2020-07-20 11:29:48,162 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 134.2 MB. Free memory was 116.0 MB in the beginning and 115.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 11:29:48,163 INFO L168 Benchmark]: CACSL2BoogieTranslator took 257.01 ms. Allocated memory is still 134.2 MB. Free memory was 97.1 MB in the beginning and 87.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-07-20 11:29:48,164 INFO L168 Benchmark]: Boogie Preprocessor took 134.30 ms. Allocated memory was 134.2 MB in the beginning and 198.2 MB in the end (delta: 64.0 MB). Free memory was 87.3 MB in the beginning and 176.1 MB in the end (delta: -88.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2020-07-20 11:29:48,165 INFO L168 Benchmark]: RCFGBuilder took 286.39 ms. Allocated memory is still 198.2 MB. Free memory was 176.1 MB in the beginning and 163.1 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-07-20 11:29:48,166 INFO L168 Benchmark]: TraceAbstraction took 722.77 ms. Allocated memory is still 198.2 MB. Free memory was 163.1 MB in the beginning and 133.5 MB in the end (delta: 29.5 MB). Peak memory consumption was 29.5 MB. Max. memory is 7.1 GB. [2020-07-20 11:29:48,171 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 134.2 MB. Free memory was 116.0 MB in the beginning and 115.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 257.01 ms. Allocated memory is still 134.2 MB. Free memory was 97.1 MB in the beginning and 87.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 134.30 ms. Allocated memory was 134.2 MB in the beginning and 198.2 MB in the end (delta: 64.0 MB). Free memory was 87.3 MB in the beginning and 176.1 MB in the end (delta: -88.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 286.39 ms. Allocated memory is still 198.2 MB. Free memory was 176.1 MB in the beginning and 163.1 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 722.77 ms. Allocated memory is still 198.2 MB. Free memory was 163.1 MB in the beginning and 133.5 MB in the end (delta: 29.5 MB). Peak memory consumption was 29.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: 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, 17 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 1 SDslu, 8 SDs, 0 SdLazy, 2 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 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, 6 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 80 SizeOfPredicates, 5 NumberOfNonLiveVariables, 54 ConjunctsInSsa, 6 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...