/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/array-fpi/ss2f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 19:45:09,006 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 19:45:09,009 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 19:45:09,049 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 19:45:09,049 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 19:45:09,061 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 19:45:09,062 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 19:45:09,065 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 19:45:09,068 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 19:45:09,072 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 19:45:09,073 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 19:45:09,075 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 19:45:09,075 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 19:45:09,078 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 19:45:09,081 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 19:45:09,083 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 19:45:09,084 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 19:45:09,085 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 19:45:09,087 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 19:45:09,093 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 19:45:09,097 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 19:45:09,098 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 19:45:09,099 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 19:45:09,100 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 19:45:09,105 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 19:45:09,114 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 19:45:09,115 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 19:45:09,117 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 19:45:09,118 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 19:45:09,133 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 19:45:09,133 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 19:45:09,135 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 19:45:09,135 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 19:45:09,135 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 19:45:09,135 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 19:45:09,136 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 19:45:09,136 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 19:45:09,136 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 19:45:09,136 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 19:45:09,137 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 19:45:09,137 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 19:45:09,138 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 19:45:09,138 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 19:45:09,138 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 19:45:09,138 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 19:45:09,139 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 19:45:09,139 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 19:45:09,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 19:45:09,139 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 19:45:09,139 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 19:45:09,140 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 19:45:09,140 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 19:45:09,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 19:45:09,470 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 19:45:09,474 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 19:45:09,475 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 19:45:09,475 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 19:45:09,476 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ss2f.c [2020-08-22 19:45:09,539 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c7e9798e/5a4e162bb02242d5880431233a0f5354/FLAG6bb6eaf17 [2020-08-22 19:45:09,993 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 19:45:09,994 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ss2f.c [2020-08-22 19:45:10,000 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c7e9798e/5a4e162bb02242d5880431233a0f5354/FLAG6bb6eaf17 [2020-08-22 19:45:10,423 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c7e9798e/5a4e162bb02242d5880431233a0f5354 [2020-08-22 19:45:10,431 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 19:45:10,432 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 19:45:10,434 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 19:45:10,434 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 19:45:10,437 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 19:45:10,438 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:45:10" (1/1) ... [2020-08-22 19:45:10,441 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8099dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:45:10, skipping insertion in model container [2020-08-22 19:45:10,441 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:45:10" (1/1) ... [2020-08-22 19:45:10,449 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 19:45:10,469 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 19:45:10,675 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:45:10,685 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 19:45:10,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:45:10,819 INFO L208 MainTranslator]: Completed translation [2020-08-22 19:45:10,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:45:10 WrapperNode [2020-08-22 19:45:10,820 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 19:45:10,821 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 19:45:10,821 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 19:45:10,821 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 19:45:10,831 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:45:10" (1/1) ... [2020-08-22 19:45:10,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:45:10" (1/1) ... [2020-08-22 19:45:10,847 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:45:10" (1/1) ... [2020-08-22 19:45:10,849 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:45:10" (1/1) ... [2020-08-22 19:45:10,867 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:45:10" (1/1) ... [2020-08-22 19:45:10,880 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:45:10" (1/1) ... [2020-08-22 19:45:10,882 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:45:10" (1/1) ... [2020-08-22 19:45:10,887 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 19:45:10,887 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 19:45:10,887 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 19:45:10,887 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 19:45:10,889 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:45:10" (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 [2020-08-22 19:45:10,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 19:45:10,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 19:45:10,949 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 19:45:10,949 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 19:45:10,949 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 19:45:10,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 19:45:10,949 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 19:45:10,949 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 19:45:10,950 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 19:45:10,950 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 19:45:10,950 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 19:45:10,950 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 19:45:10,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 19:45:10,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 19:45:10,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 19:45:10,951 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 19:45:10,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 19:45:10,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 19:45:10,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 19:45:11,304 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 19:45:11,305 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-08-22 19:45:11,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:45:11 BoogieIcfgContainer [2020-08-22 19:45:11,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 19:45:11,312 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 19:45:11,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 19:45:11,316 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 19:45:11,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 07:45:10" (1/3) ... [2020-08-22 19:45:11,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22e2492d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:45:11, skipping insertion in model container [2020-08-22 19:45:11,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:45:10" (2/3) ... [2020-08-22 19:45:11,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22e2492d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:45:11, skipping insertion in model container [2020-08-22 19:45:11,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:45:11" (3/3) ... [2020-08-22 19:45:11,320 INFO L109 eAbstractionObserver]: Analyzing ICFG ss2f.c [2020-08-22 19:45:11,332 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 19:45:11,339 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 19:45:11,354 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 19:45:11,408 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 19:45:11,409 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 19:45:11,409 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 19:45:11,409 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 19:45:11,409 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 19:45:11,409 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 19:45:11,409 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 19:45:11,409 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 19:45:11,427 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states. [2020-08-22 19:45:11,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-08-22 19:45:11,439 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:45:11,440 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:45:11,440 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:45:11,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:45:11,446 INFO L82 PathProgramCache]: Analyzing trace with hash -456074008, now seen corresponding path program 1 times [2020-08-22 19:45:11,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:45:11,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143410794] [2020-08-22 19:45:11,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:45:11,510 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:45:11,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:45:11,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:45:11,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:45:11,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 19:45:11,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:45:11,731 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 19:45:11,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143410794] [2020-08-22 19:45:11,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:45:11,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 19:45:11,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181773724] [2020-08-22 19:45:11,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 19:45:11,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:45:11,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 19:45:11,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 19:45:11,766 INFO L87 Difference]: Start difference. First operand 97 states. Second operand 3 states. [2020-08-22 19:45:12,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:45:12,059 INFO L93 Difference]: Finished difference Result 177 states and 208 transitions. [2020-08-22 19:45:12,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 19:45:12,061 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2020-08-22 19:45:12,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:45:12,073 INFO L225 Difference]: With dead ends: 177 [2020-08-22 19:45:12,074 INFO L226 Difference]: Without dead ends: 88 [2020-08-22 19:45:12,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 19:45:12,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-08-22 19:45:12,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2020-08-22 19:45:12,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-08-22 19:45:12,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 94 transitions. [2020-08-22 19:45:12,132 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 94 transitions. Word has length 41 [2020-08-22 19:45:12,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:45:12,133 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 94 transitions. [2020-08-22 19:45:12,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 19:45:12,134 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 94 transitions. [2020-08-22 19:45:12,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-08-22 19:45:12,136 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:45:12,136 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:45:12,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 19:45:12,137 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:45:12,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:45:12,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1964521925, now seen corresponding path program 1 times [2020-08-22 19:45:12,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:45:12,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1792302071] [2020-08-22 19:45:12,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:45:12,141 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:45:12,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:45:12,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:45:12,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:45:12,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 19:45:12,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:45:12,276 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 19:45:12,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1792302071] [2020-08-22 19:45:12,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:45:12,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 19:45:12,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405146840] [2020-08-22 19:45:12,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 19:45:12,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:45:12,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 19:45:12,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 19:45:12,280 INFO L87 Difference]: Start difference. First operand 88 states and 94 transitions. Second operand 5 states. [2020-08-22 19:45:12,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:45:12,601 INFO L93 Difference]: Finished difference Result 194 states and 212 transitions. [2020-08-22 19:45:12,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 19:45:12,602 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-08-22 19:45:12,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:45:12,605 INFO L225 Difference]: With dead ends: 194 [2020-08-22 19:45:12,606 INFO L226 Difference]: Without dead ends: 134 [2020-08-22 19:45:12,608 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-22 19:45:12,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-08-22 19:45:12,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 94. [2020-08-22 19:45:12,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-08-22 19:45:12,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 100 transitions. [2020-08-22 19:45:12,631 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 100 transitions. Word has length 41 [2020-08-22 19:45:12,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:45:12,632 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 100 transitions. [2020-08-22 19:45:12,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 19:45:12,632 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 100 transitions. [2020-08-22 19:45:12,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-22 19:45:12,635 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:45:12,635 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:45:12,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 19:45:12,636 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:45:12,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:45:12,636 INFO L82 PathProgramCache]: Analyzing trace with hash -725795370, now seen corresponding path program 1 times [2020-08-22 19:45:12,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:45:12,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [199949910] [2020-08-22 19:45:12,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:45:12,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 19:45:12,668 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:413) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:293) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:207) 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) [2020-08-22 19:45:12,674 INFO L168 Benchmark]: Toolchain (without parser) took 2240.98 ms. Allocated memory was 146.8 MB in the beginning and 235.9 MB in the end (delta: 89.1 MB). Free memory was 104.0 MB in the beginning and 171.1 MB in the end (delta: -67.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-08-22 19:45:12,675 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 146.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 19:45:12,676 INFO L168 Benchmark]: CACSL2BoogieTranslator took 386.73 ms. Allocated memory was 146.8 MB in the beginning and 204.5 MB in the end (delta: 57.7 MB). Free memory was 103.8 MB in the beginning and 183.0 MB in the end (delta: -79.2 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2020-08-22 19:45:12,677 INFO L168 Benchmark]: Boogie Preprocessor took 66.29 ms. Allocated memory is still 204.5 MB. Free memory was 183.0 MB in the beginning and 180.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2020-08-22 19:45:12,678 INFO L168 Benchmark]: RCFGBuilder took 423.92 ms. Allocated memory is still 204.5 MB. Free memory was 180.0 MB in the beginning and 155.9 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-08-22 19:45:12,679 INFO L168 Benchmark]: TraceAbstraction took 1359.09 ms. Allocated memory was 204.5 MB in the beginning and 235.9 MB in the end (delta: 31.5 MB). Free memory was 155.2 MB in the beginning and 171.1 MB in the end (delta: -15.9 MB). Peak memory consumption was 15.5 MB. Max. memory is 7.1 GB. [2020-08-22 19:45:12,683 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 146.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 386.73 ms. Allocated memory was 146.8 MB in the beginning and 204.5 MB in the end (delta: 57.7 MB). Free memory was 103.8 MB in the beginning and 183.0 MB in the end (delta: -79.2 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 66.29 ms. Allocated memory is still 204.5 MB. Free memory was 183.0 MB in the beginning and 180.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 423.92 ms. Allocated memory is still 204.5 MB. Free memory was 180.0 MB in the beginning and 155.9 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1359.09 ms. Allocated memory was 204.5 MB in the beginning and 235.9 MB in the end (delta: 31.5 MB). Free memory was 155.2 MB in the beginning and 171.1 MB in the end (delta: -15.9 MB). Peak memory consumption was 15.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:413) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...