/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/loop-lit/css2003.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 23:05:21,631 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 23:05:21,634 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 23:05:21,659 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 23:05:21,659 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 23:05:21,660 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 23:05:21,661 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 23:05:21,663 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 23:05:21,665 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 23:05:21,666 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 23:05:21,667 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 23:05:21,668 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 23:05:21,668 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 23:05:21,670 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 23:05:21,671 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 23:05:21,672 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 23:05:21,673 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 23:05:21,673 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 23:05:21,675 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 23:05:21,677 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 23:05:21,678 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 23:05:21,679 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 23:05:21,681 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 23:05:21,681 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 23:05:21,684 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 23:05:21,684 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 23:05:21,684 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 23:05:21,685 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 23:05:21,685 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 23:05:21,686 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 23:05:21,687 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 23:05:21,687 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 23:05:21,688 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 23:05:21,689 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 23:05:21,690 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 23:05:21,690 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 23:05:21,691 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 23:05:21,691 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 23:05:21,691 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 23:05:21,692 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 23:05:21,693 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 23:05:21,694 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 23:05:21,703 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 23:05:21,703 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 23:05:21,705 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 23:05:21,705 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 23:05:21,705 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 23:05:21,705 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 23:05:21,705 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 23:05:21,706 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 23:05:21,706 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 23:05:21,706 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 23:05:21,706 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 23:05:21,706 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 23:05:21,707 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 23:05:21,707 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 23:05:21,707 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 23:05:21,707 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 23:05:21,707 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 23:05:21,708 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 23:05:21,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 23:05:21,708 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 23:05:21,708 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 23:05:21,709 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 23:05:21,709 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 [2020-08-22 23:05:22,024 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 23:05:22,042 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 23:05:22,045 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 23:05:22,047 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 23:05:22,047 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 23:05:22,048 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/css2003.i [2020-08-22 23:05:22,117 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c5805411/7a356692f2db4ea3b7b875414cc60882/FLAGabf8c7659 [2020-08-22 23:05:22,605 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 23:05:22,606 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/css2003.i [2020-08-22 23:05:22,612 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c5805411/7a356692f2db4ea3b7b875414cc60882/FLAGabf8c7659 [2020-08-22 23:05:22,962 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c5805411/7a356692f2db4ea3b7b875414cc60882 [2020-08-22 23:05:22,973 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 23:05:22,975 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 23:05:22,975 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 23:05:22,976 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 23:05:22,980 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 23:05:22,981 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 11:05:22" (1/1) ... [2020-08-22 23:05:22,985 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a8266bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:05:22, skipping insertion in model container [2020-08-22 23:05:22,985 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 11:05:22" (1/1) ... [2020-08-22 23:05:22,994 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 23:05:23,014 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 23:05:23,225 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 23:05:23,230 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 23:05:23,250 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 23:05:23,267 INFO L208 MainTranslator]: Completed translation [2020-08-22 23:05:23,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:05:23 WrapperNode [2020-08-22 23:05:23,268 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 23:05:23,269 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 23:05:23,269 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 23:05:23,269 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 23:05:23,283 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:05:23" (1/1) ... [2020-08-22 23:05:23,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:05:23" (1/1) ... [2020-08-22 23:05:23,289 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:05:23" (1/1) ... [2020-08-22 23:05:23,289 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:05:23" (1/1) ... [2020-08-22 23:05:23,293 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:05:23" (1/1) ... [2020-08-22 23:05:23,297 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:05:23" (1/1) ... [2020-08-22 23:05:23,303 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:05:23" (1/1) ... [2020-08-22 23:05:23,377 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 23:05:23,377 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 23:05:23,378 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 23:05:23,378 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 23:05:23,383 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:05:23" (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 [2020-08-22 23:05:23,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 23:05:23,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 23:05:23,457 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 23:05:23,457 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 23:05:23,457 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 23:05:23,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 23:05:23,458 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 23:05:23,458 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 23:05:23,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 23:05:23,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 23:05:23,458 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 23:05:23,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 23:05:23,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 23:05:23,666 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 23:05:23,667 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 23:05:23,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 11:05:23 BoogieIcfgContainer [2020-08-22 23:05:23,672 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 23:05:23,673 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 23:05:23,673 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 23:05:23,677 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 23:05:23,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 11:05:22" (1/3) ... [2020-08-22 23:05:23,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c09592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 11:05:23, skipping insertion in model container [2020-08-22 23:05:23,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:05:23" (2/3) ... [2020-08-22 23:05:23,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c09592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 11:05:23, skipping insertion in model container [2020-08-22 23:05:23,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 11:05:23" (3/3) ... [2020-08-22 23:05:23,681 INFO L109 eAbstractionObserver]: Analyzing ICFG css2003.i [2020-08-22 23:05:23,699 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 23:05:23,706 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 23:05:23,746 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 23:05:23,791 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 23:05:23,792 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 23:05:23,792 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 23:05:23,792 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 23:05:23,792 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 23:05:23,793 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 23:05:23,793 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 23:05:23,793 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 23:05:23,809 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-08-22 23:05:23,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-22 23:05:23,820 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:05:23,822 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] [2020-08-22 23:05:23,822 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:05:23,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:05:23,829 INFO L82 PathProgramCache]: Analyzing trace with hash 318822911, now seen corresponding path program 1 times [2020-08-22 23:05:23,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:05:23,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [960163337] [2020-08-22 23:05:23,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:05:23,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:24,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:05:24,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:24,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:05:24,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [960163337] [2020-08-22 23:05:24,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 23:05:24,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 23:05:24,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991764598] [2020-08-22 23:05:24,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 23:05:24,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:05:24,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 23:05:24,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 23:05:24,228 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 8 states. [2020-08-22 23:05:24,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:05:24,406 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2020-08-22 23:05:24,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 23:05:24,408 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-08-22 23:05:24,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:05:24,415 INFO L225 Difference]: With dead ends: 48 [2020-08-22 23:05:24,415 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 23:05:24,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-22 23:05:24,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 23:05:24,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 23:05:24,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 23:05:24,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 23:05:24,445 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-08-22 23:05:24,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:05:24,445 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 23:05:24,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 23:05:24,445 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 23:05:24,446 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 23:05:24,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 23:05:24,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 23:05:24,811 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-22 23:05:24,812 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-08-22 23:05:24,812 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-08-22 23:05:24,812 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 23:05:24,812 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 23:05:24,813 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-08-22 23:05:24,813 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-08-22 23:05:24,813 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-08-22 23:05:24,814 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-08-22 23:05:24,814 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-08-22 23:05:24,814 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-08-22 23:05:24,814 INFO L264 CegarLoopResult]: At program point mainEXIT(lines 13 26) the Hoare annotation is: (or (and (<= 1 main_~i~0) (<= main_~i~0 1)) (let ((.cse0 (+ main_~i~0 main_~k~0))) (and (<= 2 main_~i~0) (<= .cse0 2) (<= 1 .cse0)))) [2020-08-22 23:05:24,815 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~k~0))) (and (<= 2 main_~i~0) (<= .cse0 2) (<= 1 .cse0))) [2020-08-22 23:05:24,815 INFO L264 CegarLoopResult]: At program point L23-1(lines 19 24) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~k~0))) (and (<= 1 main_~i~0) (<= .cse0 2) (<= 1 .cse0))) [2020-08-22 23:05:24,815 INFO L264 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~k~0))) (and (<= 2 main_~i~0) (<= .cse0 3) (<= 2 .cse0))) [2020-08-22 23:05:24,816 INFO L264 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (and (<= 1 main_~i~0) (<= main_~i~0 1)) [2020-08-22 23:05:24,816 INFO L264 CegarLoopResult]: At program point L19-2(lines 19 24) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~k~0))) (and (<= 2 main_~i~0) (<= .cse0 2) (<= 1 .cse0))) [2020-08-22 23:05:24,816 INFO L264 CegarLoopResult]: At program point L17-1(line 17) the Hoare annotation is: (and (<= 1 main_~i~0) (<= main_~i~0 1)) [2020-08-22 23:05:24,817 INFO L271 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: true [2020-08-22 23:05:24,817 INFO L264 CegarLoopResult]: At program point L17-2(line 17) the Hoare annotation is: (and (<= 1 main_~i~0) (<= main_~i~0 1)) [2020-08-22 23:05:24,817 INFO L264 CegarLoopResult]: At program point mainFINAL(lines 13 26) the Hoare annotation is: (or (and (<= 1 main_~i~0) (<= main_~i~0 1)) (let ((.cse0 (+ main_~i~0 main_~k~0))) (and (<= 2 main_~i~0) (<= .cse0 2) (<= 1 .cse0)))) [2020-08-22 23:05:24,818 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 26) the Hoare annotation is: true [2020-08-22 23:05:24,818 INFO L264 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~k~0))) (and (<= 2 main_~i~0) (<= .cse0 3) (<= 2 .cse0))) [2020-08-22 23:05:24,818 INFO L264 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~k~0))) (and (<= 1 main_~i~0) (<= .cse0 2) (<= 1 .cse0))) [2020-08-22 23:05:24,819 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (and (<= 1 main_~i~0) (<= main_~i~0 1)) [2020-08-22 23:05:24,819 INFO L264 CegarLoopResult]: At program point L18-1(line 18) the Hoare annotation is: (and (<= 1 main_~i~0) (<= main_~i~0 1)) [2020-08-22 23:05:24,819 INFO L264 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (and (<= 1 main_~i~0) (<= main_~i~0 1)) [2020-08-22 23:05:24,819 INFO L271 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: true [2020-08-22 23:05:24,820 INFO L271 CegarLoopResult]: At program point L14-1(line 14) the Hoare annotation is: true [2020-08-22 23:05:24,820 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-08-22 23:05:24,820 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 6 11) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-08-22 23:05:24,820 INFO L264 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-08-22 23:05:24,821 INFO L264 CegarLoopResult]: At program point L7(lines 7 9) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-08-22 23:05:24,821 INFO L264 CegarLoopResult]: At program point L7-2(lines 6 11) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-08-22 23:05:24,821 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-08-22 23:05:24,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 11:05:24 BoogieIcfgContainer [2020-08-22 23:05:24,845 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 23:05:24,848 INFO L168 Benchmark]: Toolchain (without parser) took 1872.73 ms. Allocated memory was 136.3 MB in the beginning and 198.2 MB in the end (delta: 61.9 MB). Free memory was 100.8 MB in the beginning and 91.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 71.5 MB. Max. memory is 7.1 GB. [2020-08-22 23:05:24,850 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 136.3 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 23:05:24,851 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.28 ms. Allocated memory is still 136.3 MB. Free memory was 100.6 MB in the beginning and 91.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-08-22 23:05:24,852 INFO L168 Benchmark]: Boogie Preprocessor took 108.01 ms. Allocated memory was 136.3 MB in the beginning and 198.2 MB in the end (delta: 61.9 MB). Free memory was 91.0 MB in the beginning and 178.2 MB in the end (delta: -87.2 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2020-08-22 23:05:24,853 INFO L168 Benchmark]: RCFGBuilder took 294.70 ms. Allocated memory is still 198.2 MB. Free memory was 178.2 MB in the beginning and 163.8 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2020-08-22 23:05:24,854 INFO L168 Benchmark]: TraceAbstraction took 1171.71 ms. Allocated memory is still 198.2 MB. Free memory was 163.1 MB in the beginning and 91.1 MB in the end (delta: 71.9 MB). Peak memory consumption was 71.9 MB. Max. memory is 7.1 GB. [2020-08-22 23:05:24,858 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 136.3 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 293.28 ms. Allocated memory is still 136.3 MB. Free memory was 100.6 MB in the beginning and 91.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 108.01 ms. Allocated memory was 136.3 MB in the beginning and 198.2 MB in the end (delta: 61.9 MB). Free memory was 91.0 MB in the beginning and 178.2 MB in the end (delta: -87.2 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 294.70 ms. Allocated memory is still 198.2 MB. Free memory was 178.2 MB in the beginning and 163.8 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1171.71 ms. Allocated memory is still 198.2 MB. Free memory was 163.1 MB in the beginning and 91.1 MB in the end (delta: 71.9 MB). Peak memory consumption was 71.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (1 <= i && i + k <= 2) && 1 <= i + k - ProcedureContractResult [Line: 13]: Procedure Contract for main Derived contract for procedure main: (1 <= i && i <= 1) || ((2 <= i && i + k <= 2) && 1 <= i + k) - ProcedureContractResult [Line: 6]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 23 SDtfs, 17 SDslu, 88 SDs, 0 SdLazy, 61 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred 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, 30 LocationsWithAnnotation, 36 PreInvPairs, 52 NumberOfFragments, 211 HoareAnnotationTreeSize, 36 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 30 FomulaSimplificationsInter, 51 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 2420 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 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...