/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/array-tiling/skippedu.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 23:08:57,689 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 23:08:57,694 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 23:08:57,740 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 23:08:57,740 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 23:08:57,750 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 23:08:57,753 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 23:08:57,756 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 23:08:57,759 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 23:08:57,761 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 23:08:57,764 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 23:08:57,765 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 23:08:57,765 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 23:08:57,768 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 23:08:57,770 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 23:08:57,772 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 23:08:57,773 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 23:08:57,774 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 23:08:57,777 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 23:08:57,783 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 23:08:57,787 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 23:08:57,788 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 23:08:57,789 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 23:08:57,790 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 23:08:57,795 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 23:08:57,795 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 23:08:57,795 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 23:08:57,798 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 23:08:57,799 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 23:08:57,800 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-09-04 23:08:57,806 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 23:08:57,807 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 23:08:57,808 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 23:08:57,809 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 23:08:57,828 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 23:08:57,828 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 23:08:57,831 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 23:08:57,831 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 23:08:57,831 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 23:08:57,831 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 23:08:57,832 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 23:08:57,832 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 23:08:57,833 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 23:08:57,833 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 23:08:57,834 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 23:08:57,834 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 23:08:57,834 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 23:08:57,834 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 23:08:57,835 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 23:08:57,835 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 23:08:57,835 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 23:08:57,836 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 23:08:57,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 23:08:57,836 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 23:08:57,836 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 23:08:57,837 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 23:08:57,837 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-09-04 23:08:58,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 23:08:58,285 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 23:08:58,290 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 23:08:58,292 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 23:08:58,292 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 23:08:58,293 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/skippedu.c [2020-09-04 23:08:58,372 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e674a62d2/94b296144f06498082780d1e9a31c64e/FLAG711e9930a [2020-09-04 23:08:58,882 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 23:08:58,883 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-tiling/skippedu.c [2020-09-04 23:08:58,889 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e674a62d2/94b296144f06498082780d1e9a31c64e/FLAG711e9930a [2020-09-04 23:08:59,240 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e674a62d2/94b296144f06498082780d1e9a31c64e [2020-09-04 23:08:59,255 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 23:08:59,257 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 23:08:59,258 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 23:08:59,258 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 23:08:59,263 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 23:08:59,264 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 11:08:59" (1/1) ... [2020-09-04 23:08:59,268 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48d9d4fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:08:59, skipping insertion in model container [2020-09-04 23:08:59,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 11:08:59" (1/1) ... [2020-09-04 23:08:59,277 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 23:08:59,303 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 23:08:59,546 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 23:08:59,559 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 23:08:59,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 23:08:59,605 INFO L208 MainTranslator]: Completed translation [2020-09-04 23:08:59,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:08:59 WrapperNode [2020-09-04 23:08:59,605 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 23:08:59,606 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 23:08:59,606 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 23:08:59,607 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 23:08:59,700 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:08:59" (1/1) ... [2020-09-04 23:08:59,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:08:59" (1/1) ... [2020-09-04 23:08:59,709 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:08:59" (1/1) ... [2020-09-04 23:08:59,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:08:59" (1/1) ... [2020-09-04 23:08:59,727 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:08:59" (1/1) ... [2020-09-04 23:08:59,740 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:08:59" (1/1) ... [2020-09-04 23:08:59,742 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:08:59" (1/1) ... [2020-09-04 23:08:59,749 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 23:08:59,750 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 23:08:59,750 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 23:08:59,750 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 23:08:59,751 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:08:59" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 23:08:59,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 23:08:59,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 23:08:59,820 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 23:08:59,821 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 23:08:59,821 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 23:08:59,821 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 23:08:59,821 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 23:08:59,821 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 23:08:59,821 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 23:08:59,821 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 23:08:59,822 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 23:08:59,822 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 23:08:59,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 23:08:59,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 23:08:59,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 23:08:59,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 23:08:59,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 23:08:59,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 23:09:00,192 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 23:09:00,192 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-04 23:09:00,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 11:09:00 BoogieIcfgContainer [2020-09-04 23:09:00,198 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 23:09:00,199 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 23:09:00,199 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 23:09:00,203 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 23:09:00,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 11:08:59" (1/3) ... [2020-09-04 23:09:00,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28a8ee7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 11:09:00, skipping insertion in model container [2020-09-04 23:09:00,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:08:59" (2/3) ... [2020-09-04 23:09:00,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28a8ee7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 11:09:00, skipping insertion in model container [2020-09-04 23:09:00,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 11:09:00" (3/3) ... [2020-09-04 23:09:00,207 INFO L109 eAbstractionObserver]: Analyzing ICFG skippedu.c [2020-09-04 23:09:00,219 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 23:09:00,227 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 23:09:00,246 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 23:09:00,273 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 23:09:00,273 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 23:09:00,274 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-04 23:09:00,274 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 23:09:00,274 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 23:09:00,274 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 23:09:00,274 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 23:09:00,274 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 23:09:00,292 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2020-09-04 23:09:00,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-04 23:09:00,305 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:09:00,306 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:09:00,307 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:09:00,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:09:00,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1270765896, now seen corresponding path program 1 times [2020-09-04 23:09:00,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:09:00,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [543626812] [2020-09-04 23:09:00,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:09:00,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:09:00,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:09:00,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:09:00,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 23:09:00,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:09:00,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:09:00,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [543626812] [2020-09-04 23:09:00,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 23:09:00,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 23:09:00,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890003924] [2020-09-04 23:09:00,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 23:09:00,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:09:00,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 23:09:00,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 23:09:00,635 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 3 states. [2020-09-04 23:09:00,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:09:00,818 INFO L93 Difference]: Finished difference Result 108 states and 129 transitions. [2020-09-04 23:09:00,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 23:09:00,820 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-09-04 23:09:00,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:09:00,832 INFO L225 Difference]: With dead ends: 108 [2020-09-04 23:09:00,832 INFO L226 Difference]: Without dead ends: 59 [2020-09-04 23:09:00,836 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 23:09:00,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-09-04 23:09:00,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-09-04 23:09:00,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-04 23:09:00,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-09-04 23:09:00,895 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 33 [2020-09-04 23:09:00,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:09:00,896 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-09-04 23:09:00,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 23:09:00,896 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-09-04 23:09:00,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-04 23:09:00,898 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:09:00,898 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:09:00,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 23:09:00,899 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:09:00,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:09:00,900 INFO L82 PathProgramCache]: Analyzing trace with hash 50142755, now seen corresponding path program 1 times [2020-09-04 23:09:00,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:09:00,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1492251090] [2020-09-04 23:09:00,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:09:00,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:09:01,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:09:01,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:09:01,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 23:09:01,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:09:01,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:09:01,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1492251090] [2020-09-04 23:09:01,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 23:09:01,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 23:09:01,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112916511] [2020-09-04 23:09:01,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 23:09:01,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:09:01,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 23:09:01,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 23:09:01,098 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 5 states. [2020-09-04 23:09:01,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:09:01,387 INFO L93 Difference]: Finished difference Result 106 states and 115 transitions. [2020-09-04 23:09:01,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 23:09:01,387 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-09-04 23:09:01,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:09:01,391 INFO L225 Difference]: With dead ends: 106 [2020-09-04 23:09:01,391 INFO L226 Difference]: Without dead ends: 71 [2020-09-04 23:09:01,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-04 23:09:01,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-09-04 23:09:01,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 60. [2020-09-04 23:09:01,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-04 23:09:01,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2020-09-04 23:09:01,413 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 33 [2020-09-04 23:09:01,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:09:01,413 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2020-09-04 23:09:01,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 23:09:01,413 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2020-09-04 23:09:01,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-04 23:09:01,415 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:09:01,415 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:09:01,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 23:09:01,415 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:09:01,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:09:01,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1001580845, now seen corresponding path program 1 times [2020-09-04 23:09:01,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:09:01,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1319169485] [2020-09-04 23:09:01,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:09:01,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:09:01,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:09:01,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:09:01,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 23:09:01,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:09:01,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 23:09:01,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1319169485] [2020-09-04 23:09:01,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 23:09:01,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-04 23:09:01,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068775911] [2020-09-04 23:09:01,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 23:09:01,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:09:01,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 23:09:01,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-04 23:09:01,565 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 7 states. [2020-09-04 23:09:01,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:09:01,857 INFO L93 Difference]: Finished difference Result 110 states and 120 transitions. [2020-09-04 23:09:01,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-04 23:09:01,858 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-09-04 23:09:01,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:09:01,859 INFO L225 Difference]: With dead ends: 110 [2020-09-04 23:09:01,860 INFO L226 Difference]: Without dead ends: 75 [2020-09-04 23:09:01,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-09-04 23:09:01,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-04 23:09:01,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 67. [2020-09-04 23:09:01,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-04 23:09:01,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-09-04 23:09:01,874 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 40 [2020-09-04 23:09:01,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:09:01,875 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-09-04 23:09:01,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 23:09:01,875 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-09-04 23:09:01,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-04 23:09:01,876 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:09:01,877 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:09:01,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 23:09:01,877 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:09:01,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:09:01,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1248131107, now seen corresponding path program 2 times [2020-09-04 23:09:01,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:09:01,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [262551039] [2020-09-04 23:09:01,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:09:01,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:09:02,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 23:09:02,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:09:02,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-04 23:09:02,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 23:09:02,123 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-04 23:09:02,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [262551039] [2020-09-04 23:09:02,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 23:09:02,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 23:09:02,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569677721] [2020-09-04 23:09:02,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 23:09:02,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 23:09:02,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 23:09:02,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-04 23:09:02,126 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 6 states. [2020-09-04 23:09:02,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 23:09:02,331 INFO L93 Difference]: Finished difference Result 94 states and 101 transitions. [2020-09-04 23:09:02,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 23:09:02,332 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 47 [2020-09-04 23:09:02,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 23:09:02,334 INFO L225 Difference]: With dead ends: 94 [2020-09-04 23:09:02,334 INFO L226 Difference]: Without dead ends: 80 [2020-09-04 23:09:02,335 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-04 23:09:02,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-04 23:09:02,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 68. [2020-09-04 23:09:02,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-04 23:09:02,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2020-09-04 23:09:02,367 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 47 [2020-09-04 23:09:02,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 23:09:02,368 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2020-09-04 23:09:02,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 23:09:02,368 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2020-09-04 23:09:02,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-04 23:09:02,375 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 23:09:02,380 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 23:09:02,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 23:09:02,381 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 23:09:02,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 23:09:02,381 INFO L82 PathProgramCache]: Analyzing trace with hash -153041457, now seen corresponding path program 1 times [2020-09-04 23:09:02,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 23:09:02,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1063654527] [2020-09-04 23:09:02,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 23:09:02,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 23:09:02,467 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 23:09:02,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 23:09:02,526 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 23:09:02,572 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 23:09:02,572 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 23:09:02,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 23:09:02,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 11:09:02 BoogieIcfgContainer [2020-09-04 23:09:02,653 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 23:09:02,657 INFO L168 Benchmark]: Toolchain (without parser) took 3398.46 ms. Allocated memory was 140.5 MB in the beginning and 234.4 MB in the end (delta: 93.8 MB). Free memory was 103.4 MB in the beginning and 89.8 MB in the end (delta: 13.6 MB). Peak memory consumption was 107.4 MB. Max. memory is 7.1 GB. [2020-09-04 23:09:02,658 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.5 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-09-04 23:09:02,658 INFO L168 Benchmark]: CACSL2BoogieTranslator took 347.71 ms. Allocated memory is still 140.5 MB. Free memory was 103.2 MB in the beginning and 92.4 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-09-04 23:09:02,659 INFO L168 Benchmark]: Boogie Preprocessor took 143.01 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 92.4 MB in the beginning and 181.9 MB in the end (delta: -89.5 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2020-09-04 23:09:02,660 INFO L168 Benchmark]: RCFGBuilder took 448.22 ms. Allocated memory is still 204.5 MB. Free memory was 181.9 MB in the beginning and 162.6 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. [2020-09-04 23:09:02,662 INFO L168 Benchmark]: TraceAbstraction took 2453.90 ms. Allocated memory was 204.5 MB in the beginning and 234.4 MB in the end (delta: 29.9 MB). Free memory was 162.0 MB in the beginning and 89.8 MB in the end (delta: 72.1 MB). Peak memory consumption was 102.0 MB. Max. memory is 7.1 GB. [2020-09-04 23:09:02,666 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 140.5 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 347.71 ms. Allocated memory is still 140.5 MB. Free memory was 103.2 MB in the beginning and 92.4 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 143.01 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 92.4 MB in the beginning and 181.9 MB in the end (delta: -89.5 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 448.22 ms. Allocated memory is still 204.5 MB. Free memory was 181.9 MB in the beginning and 162.6 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2453.90 ms. Allocated memory was 204.5 MB in the beginning and 234.4 MB in the end (delta: 29.9 MB). Free memory was 162.0 MB in the beginning and 89.8 MB in the end (delta: 72.1 MB). Peak memory consumption was 102.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L10] int SIZE; VAL [\old(MAX)=100003, \old(SIZE)=100002, MAX=100003, SIZE=0] [L12] const int MAX = 100000; VAL [\old(MAX)=100003, \old(SIZE)=100002, MAX=100000, SIZE=0] [L16] SIZE = __VERIFIER_nondet_int() VAL [\old(SIZE)=0, __VERIFIER_nondet_int()=2, MAX=100000, SIZE=2] [L17] COND TRUE SIZE > 1 && SIZE < MAX VAL [\old(SIZE)=0, MAX=100000, SIZE=2] [L19] int i; VAL [\old(SIZE)=0, MAX=100000, SIZE=2] [L20] int *a = malloc(sizeof(int)*SIZE); VAL [\old(SIZE)=0, a={-1:0}, malloc(sizeof(int)*SIZE)={-1:0}, MAX=100000, SIZE=2] [L22] i = 0 VAL [\old(SIZE)=0, a={-1:0}, i=0, malloc(sizeof(int)*SIZE)={-1:0}, MAX=100000, SIZE=2] [L22] COND TRUE i < SIZE VAL [\old(SIZE)=0, a={-1:0}, i=0, malloc(sizeof(int)*SIZE)={-1:0}, MAX=100000, SIZE=2] [L24] a[i] = __VERIFIER_nondet_int() VAL [\old(SIZE)=0, __VERIFIER_nondet_int()=1, a={-1:0}, i=0, malloc(sizeof(int)*SIZE)={-1:0}, MAX=100000, SIZE=2] [L22] i++ VAL [\old(SIZE)=0, a={-1:0}, i=1, malloc(sizeof(int)*SIZE)={-1:0}, MAX=100000, SIZE=2] [L22] COND TRUE i < SIZE VAL [\old(SIZE)=0, a={-1:0}, i=1, malloc(sizeof(int)*SIZE)={-1:0}, MAX=100000, SIZE=2] [L24] a[i] = __VERIFIER_nondet_int() VAL [\old(SIZE)=0, __VERIFIER_nondet_int()=-4, a={-1:0}, i=1, malloc(sizeof(int)*SIZE)={-1:0}, MAX=100000, SIZE=2] [L22] i++ VAL [\old(SIZE)=0, a={-1:0}, i=2, malloc(sizeof(int)*SIZE)={-1:0}, MAX=100000, SIZE=2] [L22] COND FALSE !(i < SIZE) VAL [\old(SIZE)=0, a={-1:0}, i=2, malloc(sizeof(int)*SIZE)={-1:0}, MAX=100000, SIZE=2] [L27] COND FALSE !(SIZE % 2 != 0) VAL [\old(SIZE)=0, a={-1:0}, i=2, malloc(sizeof(int)*SIZE)={-1:0}, MAX=100000, SIZE=2] [L29] CALL assume_abort_if_not(SIZE % 2 == 0) VAL [\old(cond)=1, \old(SIZE)=0, MAX=100000, SIZE=2] [L4] COND FALSE !(!cond) VAL [\old(cond)=1, \old(SIZE)=0, cond=1, MAX=100000, SIZE=2] [L29] RET assume_abort_if_not(SIZE % 2 == 0) VAL [\old(SIZE)=0, a={-1:0}, i=2, malloc(sizeof(int)*SIZE)={-1:0}, MAX=100000, SIZE=2] [L30] i = 1 VAL [\old(SIZE)=0, a={-1:0}, i=1, malloc(sizeof(int)*SIZE)={-1:0}, MAX=100000, SIZE=2] [L30] COND TRUE i <= SIZE/2 VAL [\old(SIZE)=0, a={-1:0}, i=1, malloc(sizeof(int)*SIZE)={-1:0}, MAX=100000, SIZE=2] [L32] EXPR a[2*i-2] VAL [\old(SIZE)=0, a={-1:0}, a[2*i-2]=1, i=1, malloc(sizeof(int)*SIZE)={-1:0}, MAX=100000, SIZE=2] [L32] COND FALSE !(a[2*i-2] > i) VAL [\old(SIZE)=0, a={-1:0}, a[2*i-2]=1, i=1, malloc(sizeof(int)*SIZE)={-1:0}, MAX=100000, SIZE=2] [L36] EXPR a[2*i-1] VAL [\old(SIZE)=0, a={-1:0}, a[2*i-1]=-4, i=1, malloc(sizeof(int)*SIZE)={-1:0}, MAX=100000, SIZE=2] [L36] COND FALSE !(a[2*i-1] > i) VAL [\old(SIZE)=0, a={-1:0}, a[2*i-1]=-4, i=1, malloc(sizeof(int)*SIZE)={-1:0}, MAX=100000, SIZE=2] [L30] i++ VAL [\old(SIZE)=0, a={-1:0}, i=2, malloc(sizeof(int)*SIZE)={-1:0}, MAX=100000, SIZE=2] [L30] COND FALSE !(i <= SIZE/2) VAL [\old(SIZE)=0, a={-1:0}, i=2, malloc(sizeof(int)*SIZE)={-1:0}, MAX=100000, SIZE=2] [L42] i = 0 VAL [\old(SIZE)=0, a={-1:0}, i=0, malloc(sizeof(int)*SIZE)={-1:0}, MAX=100000, SIZE=2] [L42] COND TRUE i < SIZE VAL [\old(SIZE)=0, a={-1:0}, i=0, malloc(sizeof(int)*SIZE)={-1:0}, MAX=100000, SIZE=2] [L44] EXPR a[i] VAL [\old(SIZE)=0, a={-1:0}, a[i]=1, i=0, malloc(sizeof(int)*SIZE)={-1:0}, MAX=100000, SIZE=2] [L44] CALL __VERIFIER_assert( a[i] <= i ) VAL [\old(cond)=0, \old(SIZE)=0, MAX=100000, SIZE=2] [L6] COND TRUE !(cond) VAL [\old(cond)=0, \old(SIZE)=0, cond=0, MAX=100000, SIZE=2] [L6] __VERIFIER_error() VAL [\old(cond)=0, \old(SIZE)=0, cond=0, MAX=100000, SIZE=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 66 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.3s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 207 SDtfs, 306 SDslu, 108 SDs, 0 SdLazy, 430 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 31 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 210 NumberOfCodeBlocks, 210 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 149 ConstructedInterpolants, 0 QuantifiedInterpolants, 13754 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 9/10 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...