/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/recursive/EvenOdd01-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 13:03:08,772 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:03:08,774 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:03:08,786 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 13:03:08,786 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 13:03:08,787 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 13:03:08,788 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 13:03:08,790 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 13:03:08,792 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 13:03:08,793 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 13:03:08,793 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 13:03:08,795 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 13:03:08,795 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 13:03:08,796 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 13:03:08,797 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 13:03:08,798 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 13:03:08,799 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 13:03:08,799 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 13:03:08,801 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 13:03:08,803 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 13:03:08,804 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 13:03:08,805 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 13:03:08,806 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 13:03:08,807 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 13:03:08,809 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 13:03:08,817 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 13:03:08,818 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 13:03:08,818 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 13:03:08,819 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 13:03:08,828 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:03:08,829 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:03:08,830 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:03:08,830 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:03:08,830 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:03:08,830 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:03:08,831 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:03:08,831 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:03:08,831 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:03:08,831 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:03:08,831 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:03:08,832 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:03:08,832 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:03:08,832 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:03:08,832 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:03:08,832 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:03:08,833 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:03:08,833 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:03:08,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:03:08,833 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:03:08,833 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:03:08,834 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:03:08,834 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:03:09,104 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:03:09,125 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:03:09,129 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:03:09,130 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:03:09,131 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:03:09,131 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/EvenOdd01-1.c [2020-07-07 13:03:09,207 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b15967dd0/3685931ca8b54badac56430a9be0070c/FLAG8f1b225ea [2020-07-07 13:03:09,660 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:03:09,661 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/EvenOdd01-1.c [2020-07-07 13:03:09,667 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b15967dd0/3685931ca8b54badac56430a9be0070c/FLAG8f1b225ea [2020-07-07 13:03:10,070 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b15967dd0/3685931ca8b54badac56430a9be0070c [2020-07-07 13:03:10,082 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:03:10,084 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:03:10,090 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:03:10,090 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:03:10,093 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:03:10,094 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:03:10" (1/1) ... [2020-07-07 13:03:10,097 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d8033bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:03:10, skipping insertion in model container [2020-07-07 13:03:10,097 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:03:10" (1/1) ... [2020-07-07 13:03:10,106 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:03:10,125 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:03:10,296 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:03:10,303 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:03:10,318 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:03:10,330 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:03:10,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:03:10 WrapperNode [2020-07-07 13:03:10,330 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:03:10,331 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:03:10,331 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:03:10,331 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:03:10,343 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:03:10" (1/1) ... [2020-07-07 13:03:10,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:03:10" (1/1) ... [2020-07-07 13:03:10,422 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:03:10" (1/1) ... [2020-07-07 13:03:10,423 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:03:10" (1/1) ... [2020-07-07 13:03:10,431 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:03:10" (1/1) ... [2020-07-07 13:03:10,433 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:03:10" (1/1) ... [2020-07-07 13:03:10,433 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:03:10" (1/1) ... [2020-07-07 13:03:10,435 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:03:10,435 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:03:10,436 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:03:10,436 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:03:10,437 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:03:10" (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 13:03:10,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:03:10,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:03:10,492 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd [2020-07-07 13:03:10,492 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven [2020-07-07 13:03:10,492 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:03:10,492 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:03:10,492 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 13:03:10,493 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd [2020-07-07 13:03:10,493 INFO L130 BoogieDeclarations]: Found specification of procedure isEven [2020-07-07 13:03:10,493 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:03:10,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:03:10,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:03:10,698 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:03:10,698 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-07 13:03:10,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:03:10 BoogieIcfgContainer [2020-07-07 13:03:10,705 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:03:10,707 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:03:10,707 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:03:10,711 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:03:10,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:03:10" (1/3) ... [2020-07-07 13:03:10,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6104a686 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:03:10, skipping insertion in model container [2020-07-07 13:03:10,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:03:10" (2/3) ... [2020-07-07 13:03:10,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6104a686 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:03:10, skipping insertion in model container [2020-07-07 13:03:10,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:03:10" (3/3) ... [2020-07-07 13:03:10,714 INFO L109 eAbstractionObserver]: Analyzing ICFG EvenOdd01-1.c [2020-07-07 13:03:10,726 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:03:10,736 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 13:03:10,753 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 13:03:10,779 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:03:10,779 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:03:10,780 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:03:10,780 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:03:10,780 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:03:10,780 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:03:10,781 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:03:10,781 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:03:10,799 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-07-07 13:03:10,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-07 13:03:10,810 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:03:10,811 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 13:03:10,811 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:03:10,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:03:10,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1047957633, now seen corresponding path program 1 times [2020-07-07 13:03:10,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:03:10,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925357721] [2020-07-07 13:03:10,829 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:03:10,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:11,289 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 25 [2020-07-07 13:03:11,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:11,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:11,415 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 13:03:11,415 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:03:11,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [925357721] [2020-07-07 13:03:11,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:03:11,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-07 13:03:11,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810783245] [2020-07-07 13:03:11,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-07 13:03:11,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:03:11,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-07 13:03:11,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-07-07 13:03:11,441 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 9 states. [2020-07-07 13:03:11,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:03:11,778 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2020-07-07 13:03:11,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-07 13:03:11,781 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2020-07-07 13:03:11,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:03:11,792 INFO L225 Difference]: With dead ends: 62 [2020-07-07 13:03:11,796 INFO L226 Difference]: Without dead ends: 40 [2020-07-07 13:03:11,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-07-07 13:03:11,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-07-07 13:03:11,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-07-07 13:03:11,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-07-07 13:03:11,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-07-07 13:03:11,853 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 20 [2020-07-07 13:03:11,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:03:11,854 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-07-07 13:03:11,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-07 13:03:11,854 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-07-07 13:03:11,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-07 13:03:11,857 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:03:11,857 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] [2020-07-07 13:03:11,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:03:11,858 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:03:11,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:03:11,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1743555941, now seen corresponding path program 1 times [2020-07-07 13:03:11,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:03:11,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [494461565] [2020-07-07 13:03:11,861 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:03:11,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:12,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:12,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:12,152 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 13:03:12,152 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:03:12,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [494461565] [2020-07-07 13:03:12,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:03:12,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-07 13:03:12,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599524161] [2020-07-07 13:03:12,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-07 13:03:12,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:03:12,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-07 13:03:12,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-07-07 13:03:12,156 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 9 states. [2020-07-07 13:03:12,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:03:12,303 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2020-07-07 13:03:12,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-07 13:03:12,304 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-07-07 13:03:12,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:03:12,305 INFO L225 Difference]: With dead ends: 49 [2020-07-07 13:03:12,305 INFO L226 Difference]: Without dead ends: 42 [2020-07-07 13:03:12,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-07-07 13:03:12,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-07-07 13:03:12,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-07-07 13:03:12,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-07-07 13:03:12,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-07-07 13:03:12,317 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 21 [2020-07-07 13:03:12,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:03:12,318 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-07-07 13:03:12,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-07 13:03:12,318 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-07-07 13:03:12,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-07 13:03:12,319 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:03:12,320 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] [2020-07-07 13:03:12,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 13:03:12,320 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:03:12,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:03:12,321 INFO L82 PathProgramCache]: Analyzing trace with hash 698419476, now seen corresponding path program 1 times [2020-07-07 13:03:12,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:03:12,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [122201554] [2020-07-07 13:03:12,321 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:03:12,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:12,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:12,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:12,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:12,376 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 13:03:12,376 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:03:12,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [122201554] [2020-07-07 13:03:12,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:03:12,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 13:03:12,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96485587] [2020-07-07 13:03:12,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 13:03:12,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:03:12,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 13:03:12,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-07 13:03:12,379 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 5 states. [2020-07-07 13:03:12,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:03:12,417 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2020-07-07 13:03:12,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 13:03:12,417 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-07-07 13:03:12,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:03:12,419 INFO L225 Difference]: With dead ends: 61 [2020-07-07 13:03:12,419 INFO L226 Difference]: Without dead ends: 41 [2020-07-07 13:03:12,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 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 13:03:12,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-07-07 13:03:12,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2020-07-07 13:03:12,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-07-07 13:03:12,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-07-07 13:03:12,429 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 29 [2020-07-07 13:03:12,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:03:12,429 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-07-07 13:03:12,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 13:03:12,430 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-07-07 13:03:12,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-07 13:03:12,431 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:03:12,431 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] [2020-07-07 13:03:12,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 13:03:12,432 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:03:12,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:03:12,432 INFO L82 PathProgramCache]: Analyzing trace with hash 735393428, now seen corresponding path program 1 times [2020-07-07 13:03:12,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:03:12,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1607967415] [2020-07-07 13:03:12,433 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:03:12,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:12,623 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 18 [2020-07-07 13:03:12,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:12,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:12,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:12,736 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 13:03:12,736 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:03:12,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1607967415] [2020-07-07 13:03:12,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:03:12,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-07-07 13:03:12,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425382106] [2020-07-07 13:03:12,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-07 13:03:12,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:03:12,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-07 13:03:12,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-07-07 13:03:12,739 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 12 states. [2020-07-07 13:03:13,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:03:13,017 INFO L93 Difference]: Finished difference Result 53 states and 56 transitions. [2020-07-07 13:03:13,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-07 13:03:13,018 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2020-07-07 13:03:13,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:03:13,019 INFO L225 Difference]: With dead ends: 53 [2020-07-07 13:03:13,019 INFO L226 Difference]: Without dead ends: 46 [2020-07-07 13:03:13,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2020-07-07 13:03:13,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-07-07 13:03:13,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2020-07-07 13:03:13,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-07 13:03:13,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2020-07-07 13:03:13,030 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 30 [2020-07-07 13:03:13,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:03:13,030 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2020-07-07 13:03:13,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-07 13:03:13,031 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2020-07-07 13:03:13,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-07 13:03:13,032 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:03:13,032 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-07 13:03:13,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 13:03:13,033 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:03:13,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:03:13,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1128861445, now seen corresponding path program 1 times [2020-07-07 13:03:13,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:03:13,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1188058604] [2020-07-07 13:03:13,034 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Garbage collection #1: 17 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 17 to 31 Garbage collection #2: 31 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 31 to 61 Garbage collection #3: 61 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 61 to 113 [2020-07-07 13:03:13,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:13,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:03:13,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 13:03:13,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 13:03:13,206 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: has to be unsat by construction, we do check only for interpolant computation at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:396) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:239) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:108) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.Interpolator.generateInterpolantsCraigNested(Interpolator.java:146) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.Interpolator.generateInterpolants(Interpolator.java:102) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:279) 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 13:03:13,211 INFO L168 Benchmark]: Toolchain (without parser) took 3126.61 ms. Allocated memory was 134.7 MB in the beginning and 255.9 MB in the end (delta: 121.1 MB). Free memory was 100.4 MB in the beginning and 196.5 MB in the end (delta: -96.2 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. [2020-07-07 13:03:13,212 INFO L168 Benchmark]: CDTParser took 0.73 ms. Allocated memory is still 134.7 MB. Free memory was 118.2 MB in the beginning and 118.0 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-07 13:03:13,213 INFO L168 Benchmark]: CACSL2BoogieTranslator took 241.20 ms. Allocated memory is still 134.7 MB. Free memory was 100.1 MB in the beginning and 90.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-07-07 13:03:13,214 INFO L168 Benchmark]: Boogie Preprocessor took 104.09 ms. Allocated memory was 134.7 MB in the beginning and 198.2 MB in the end (delta: 63.4 MB). Free memory was 90.1 MB in the beginning and 176.9 MB in the end (delta: -86.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. [2020-07-07 13:03:13,214 INFO L168 Benchmark]: RCFGBuilder took 269.49 ms. Allocated memory is still 198.2 MB. Free memory was 176.9 MB in the beginning and 162.0 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. [2020-07-07 13:03:13,215 INFO L168 Benchmark]: TraceAbstraction took 2502.19 ms. Allocated memory was 198.2 MB in the beginning and 255.9 MB in the end (delta: 57.7 MB). Free memory was 161.3 MB in the beginning and 196.5 MB in the end (delta: -35.2 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-07-07 13:03:13,220 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.73 ms. Allocated memory is still 134.7 MB. Free memory was 118.2 MB in the beginning and 118.0 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 241.20 ms. Allocated memory is still 134.7 MB. Free memory was 100.1 MB in the beginning and 90.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 104.09 ms. Allocated memory was 134.7 MB in the beginning and 198.2 MB in the end (delta: 63.4 MB). Free memory was 90.1 MB in the beginning and 176.9 MB in the end (delta: -86.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 269.49 ms. Allocated memory is still 198.2 MB. Free memory was 176.9 MB in the beginning and 162.0 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2502.19 ms. Allocated memory was 198.2 MB in the beginning and 255.9 MB in the end (delta: 57.7 MB). Free memory was 161.3 MB in the beginning and 196.5 MB in the end (delta: -35.2 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: has to be unsat by construction, we do check only for interpolant computation de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: has to be unsat by construction, we do check only for interpolant computation: de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:396) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...