/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loops/sum01-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 13:58:52,117 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:58:52,120 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:58:52,132 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 13:58:52,132 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 13:58:52,133 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 13:58:52,135 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 13:58:52,137 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 13:58:52,138 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 13:58:52,139 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 13:58:52,140 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 13:58:52,141 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 13:58:52,142 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 13:58:52,143 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 13:58:52,144 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 13:58:52,145 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 13:58:52,146 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 13:58:52,147 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 13:58:52,148 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 13:58:52,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 13:58:52,151 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 13:58:52,154 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 13:58:52,155 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 13:58:52,157 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 13:58:52,159 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 13:58:52,172 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 13:58:52,173 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 13:58:52,175 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 13:58:52,176 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 13:58:52,191 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:58:52,191 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:58:52,193 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:58:52,194 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:58:52,194 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:58:52,194 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:58:52,194 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:58:52,194 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:58:52,194 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:58:52,195 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:58:52,196 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:58:52,196 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:58:52,196 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:58:52,196 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:58:52,197 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:58:52,197 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:58:52,197 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:58:52,197 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:58:52,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:58:52,198 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:58:52,198 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:58:52,198 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:58:52,198 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:58:52,481 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:58:52,503 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:58:52,506 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:58:52,508 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:58:52,509 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:58:52,510 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum01-1.i [2020-07-07 13:58:52,590 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9123c3fc1/7ad92a3ad0884de389c363763dddf967/FLAG0a567f023 [2020-07-07 13:58:53,062 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:58:53,062 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum01-1.i [2020-07-07 13:58:53,069 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9123c3fc1/7ad92a3ad0884de389c363763dddf967/FLAG0a567f023 [2020-07-07 13:58:53,494 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9123c3fc1/7ad92a3ad0884de389c363763dddf967 [2020-07-07 13:58:53,503 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:58:53,506 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:58:53,507 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:58:53,507 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:58:53,512 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:58:53,513 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:58:53" (1/1) ... [2020-07-07 13:58:53,517 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e2a7856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:53, skipping insertion in model container [2020-07-07 13:58:53,517 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:58:53" (1/1) ... [2020-07-07 13:58:53,527 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:58:53,545 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:58:53,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:58:53,731 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:58:53,751 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:58:53,767 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:58:53,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:53 WrapperNode [2020-07-07 13:58:53,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:58:53,768 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:58:53,768 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:58:53,768 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:58:53,781 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:53" (1/1) ... [2020-07-07 13:58:53,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:53" (1/1) ... [2020-07-07 13:58:53,785 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:53" (1/1) ... [2020-07-07 13:58:53,785 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:53" (1/1) ... [2020-07-07 13:58:53,788 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:53" (1/1) ... [2020-07-07 13:58:53,793 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:53" (1/1) ... [2020-07-07 13:58:53,793 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:53" (1/1) ... [2020-07-07 13:58:53,878 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:58:53,879 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:58:53,879 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:58:53,879 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:58:53,880 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:53" (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 [2020-07-07 13:58:53,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:58:53,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:58:53,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-07 13:58:53,941 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:58:53,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:58:53,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-07 13:58:53,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-07-07 13:58:53,942 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:58:53,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:58:53,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:58:54,120 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:58:54,120 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-07 13:58:54,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:58:54 BoogieIcfgContainer [2020-07-07 13:58:54,124 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:58:54,125 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:58:54,126 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:58:54,129 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:58:54,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:58:53" (1/3) ... [2020-07-07 13:58:54,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@343656fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:58:54, skipping insertion in model container [2020-07-07 13:58:54,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:53" (2/3) ... [2020-07-07 13:58:54,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@343656fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:58:54, skipping insertion in model container [2020-07-07 13:58:54,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:58:54" (3/3) ... [2020-07-07 13:58:54,133 INFO L109 eAbstractionObserver]: Analyzing ICFG sum01-1.i [2020-07-07 13:58:54,143 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:58:54,150 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 13:58:54,165 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 13:58:54,195 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:58:54,195 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:58:54,195 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:58:54,195 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:58:54,196 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:58:54,196 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:58:54,196 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:58:54,196 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:58:54,215 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-07-07 13:58:54,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-07 13:58:54,227 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:58:54,228 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:58:54,228 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:58:54,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:58:54,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1882057920, now seen corresponding path program 1 times [2020-07-07 13:58:54,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:58:54,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [292007776] [2020-07-07 13:58:54,248 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:58:54,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:58:54,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:58:54,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:58:54,408 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:58:54,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [292007776] [2020-07-07 13:58:54,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:58:54,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-07 13:58:54,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099545622] [2020-07-07 13:58:54,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-07 13:58:54,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:58:54,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-07 13:58:54,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-07 13:58:54,429 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2020-07-07 13:58:54,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:58:54,450 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2020-07-07 13:58:54,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-07 13:58:54,451 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2020-07-07 13:58:54,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:58:54,458 INFO L225 Difference]: With dead ends: 37 [2020-07-07 13:58:54,459 INFO L226 Difference]: Without dead ends: 20 [2020-07-07 13:58:54,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-07 13:58:54,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-07-07 13:58:54,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-07-07 13:58:54,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-07-07 13:58:54,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-07-07 13:58:54,498 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 14 [2020-07-07 13:58:54,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:58:54,498 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-07-07 13:58:54,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-07 13:58:54,499 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-07-07 13:58:54,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-07 13:58:54,500 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:58:54,500 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:58:54,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:58:54,500 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:58:54,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:58:54,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1869128626, now seen corresponding path program 1 times [2020-07-07 13:58:54,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:58:54,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1488383375] [2020-07-07 13:58:54,502 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:58:54,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:58:54,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:58:54,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:58:54,604 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:58:54,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1488383375] [2020-07-07 13:58:54,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:58:54,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 13:58:54,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154663972] [2020-07-07 13:58:54,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 13:58:54,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:58:54,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 13:58:54,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-07 13:58:54,608 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 5 states. [2020-07-07 13:58:54,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:58:54,667 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2020-07-07 13:58:54,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 13:58:54,668 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-07-07 13:58:54,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:58:54,670 INFO L225 Difference]: With dead ends: 31 [2020-07-07 13:58:54,670 INFO L226 Difference]: Without dead ends: 26 [2020-07-07 13:58:54,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-07 13:58:54,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-07-07 13:58:54,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2020-07-07 13:58:54,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-07-07 13:58:54,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-07-07 13:58:54,680 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 14 [2020-07-07 13:58:54,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:58:54,681 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-07-07 13:58:54,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 13:58:54,681 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-07-07 13:58:54,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-07 13:58:54,682 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:58:54,683 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] [2020-07-07 13:58:54,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 13:58:54,683 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:58:54,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:58:54,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1535432394, now seen corresponding path program 1 times [2020-07-07 13:58:54,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:58:54,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951052494] [2020-07-07 13:58:54,685 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Garbage collection #1: 11 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 11 to 19 Garbage collection #2: 19 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 19 to 37 Garbage collection #3: 37 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 37 to 73 [2020-07-07 13:58:57,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:58:57,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:58:57,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:58:57,507 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:58:57,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951052494] [2020-07-07 13:58:57,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:58:57,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-07-07 13:58:57,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332707970] [2020-07-07 13:58:57,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-07 13:58:57,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:58:57,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-07 13:58:57,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-07-07 13:58:57,511 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 13 states. [2020-07-07 13:58:57,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:58:57,796 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2020-07-07 13:58:57,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-07 13:58:57,798 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 20 [2020-07-07 13:58:57,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:58:57,800 INFO L225 Difference]: With dead ends: 50 [2020-07-07 13:58:57,800 INFO L226 Difference]: Without dead ends: 31 [2020-07-07 13:58:57,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2020-07-07 13:58:57,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-07-07 13:58:57,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2020-07-07 13:58:57,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-07-07 13:58:57,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-07-07 13:58:57,821 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 20 [2020-07-07 13:58:57,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:58:57,822 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-07-07 13:58:57,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-07 13:58:57,823 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-07-07 13:58:57,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-07 13:58:57,824 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:58:57,824 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:58:57,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 13:58:57,824 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:58:57,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:58:57,825 INFO L82 PathProgramCache]: Analyzing trace with hash -927596731, now seen corresponding path program 1 times [2020-07-07 13:58:57,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:58:57,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1158774307] [2020-07-07 13:58:57,827 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Garbage collection #1: 11 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 11 to 19 Garbage collection #2: 19 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 19 to 37 Garbage collection #3: 37 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 37 to 73 Garbage collection #1: 11 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 11 to 19 Garbage collection #2: 19 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 19 to 37 [2020-07-07 13:59:02,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 13:59:02,069 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalArgumentException: must have same length at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.pairwiseEquality(SmtUtils.java:418) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.constructEpsilon(AcceleratedInterpolation.java:510) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:449) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:277) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:144) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-07 13:59:02,074 INFO L168 Benchmark]: Toolchain (without parser) took 8568.36 ms. Allocated memory was 144.2 MB in the beginning and 232.3 MB in the end (delta: 88.1 MB). Free memory was 101.9 MB in the beginning and 134.7 MB in the end (delta: -32.8 MB). Peak memory consumption was 55.3 MB. Max. memory is 7.1 GB. [2020-07-07 13:59:02,075 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 144.2 MB. Free memory is still 120.4 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-07 13:59:02,078 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.03 ms. Allocated memory is still 144.2 MB. Free memory was 101.9 MB in the beginning and 92.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-07-07 13:59:02,080 INFO L168 Benchmark]: Boogie Preprocessor took 110.17 ms. Allocated memory was 144.2 MB in the beginning and 200.8 MB in the end (delta: 56.6 MB). Free memory was 92.5 MB in the beginning and 180.5 MB in the end (delta: -88.0 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-07-07 13:59:02,080 INFO L168 Benchmark]: RCFGBuilder took 245.84 ms. Allocated memory is still 200.8 MB. Free memory was 180.5 MB in the beginning and 167.9 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-07-07 13:59:02,085 INFO L168 Benchmark]: TraceAbstraction took 7946.34 ms. Allocated memory was 200.8 MB in the beginning and 232.3 MB in the end (delta: 31.5 MB). Free memory was 167.9 MB in the beginning and 134.7 MB in the end (delta: 33.2 MB). Peak memory consumption was 64.6 MB. Max. memory is 7.1 GB. [2020-07-07 13:59:02,093 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 144.2 MB. Free memory is still 120.4 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 261.03 ms. Allocated memory is still 144.2 MB. Free memory was 101.9 MB in the beginning and 92.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.17 ms. Allocated memory was 144.2 MB in the beginning and 200.8 MB in the end (delta: 56.6 MB). Free memory was 92.5 MB in the beginning and 180.5 MB in the end (delta: -88.0 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 245.84 ms. Allocated memory is still 200.8 MB. Free memory was 180.5 MB in the beginning and 167.9 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7946.34 ms. Allocated memory was 200.8 MB in the beginning and 232.3 MB in the end (delta: 31.5 MB). Free memory was 167.9 MB in the beginning and 134.7 MB in the end (delta: 33.2 MB). Peak memory consumption was 64.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalArgumentException: must have same length de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalArgumentException: must have same length: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.pairwiseEquality(SmtUtils.java:418) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...