/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/sum04-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 13:58:57,302 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:58:57,305 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:58:57,318 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 13:58:57,318 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 13:58:57,319 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 13:58:57,321 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 13:58:57,323 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 13:58:57,325 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 13:58:57,325 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 13:58:57,327 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 13:58:57,328 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 13:58:57,328 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 13:58:57,329 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 13:58:57,330 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 13:58:57,332 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 13:58:57,332 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 13:58:57,333 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 13:58:57,335 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 13:58:57,337 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 13:58:57,339 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 13:58:57,340 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 13:58:57,341 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 13:58:57,342 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 13:58:57,345 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 13:58:57,353 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 13:58:57,354 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 13:58:57,354 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 13:58:57,355 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 13:58:57,367 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:58:57,368 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:58:57,371 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:58:57,372 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:58:57,372 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:58:57,372 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:58:57,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:58:57,373 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:58:57,373 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:58:57,374 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:58:57,374 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:58:57,375 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:58:57,375 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:58:57,375 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:58:57,376 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:58:57,376 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:58:57,376 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:58:57,376 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:58:57,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:58:57,377 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:58:57,377 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:58:57,377 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:58:57,377 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:58:57,710 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:58:57,728 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:58:57,731 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:58:57,732 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:58:57,733 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:58:57,734 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum04-1.i [2020-07-07 13:58:57,815 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00539c423/0bdbd2f9ef8b48528bf7a2d4e7dc327e/FLAGc409421ed [2020-07-07 13:58:58,304 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:58:58,304 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum04-1.i [2020-07-07 13:58:58,310 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00539c423/0bdbd2f9ef8b48528bf7a2d4e7dc327e/FLAGc409421ed [2020-07-07 13:58:58,681 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00539c423/0bdbd2f9ef8b48528bf7a2d4e7dc327e [2020-07-07 13:58:58,689 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:58:58,691 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:58:58,692 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:58:58,692 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:58:58,696 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:58:58,697 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:58:58" (1/1) ... [2020-07-07 13:58:58,700 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@740af49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:58, skipping insertion in model container [2020-07-07 13:58:58,700 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:58:58" (1/1) ... [2020-07-07 13:58:58,707 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:58:58,723 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:58:58,883 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:58:58,888 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:58:58,903 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:58:58,918 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:58:58,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:58 WrapperNode [2020-07-07 13:58:58,919 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:58:58,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:58:58,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:58:58,920 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:58:58,934 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:58" (1/1) ... [2020-07-07 13:58:58,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:58" (1/1) ... [2020-07-07 13:58:58,939 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:58" (1/1) ... [2020-07-07 13:58:58,939 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:58" (1/1) ... [2020-07-07 13:58:58,942 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:58" (1/1) ... [2020-07-07 13:58:58,947 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:58" (1/1) ... [2020-07-07 13:58:58,948 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:58" (1/1) ... [2020-07-07 13:58:58,949 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:58:58,949 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:58:58,949 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:58:58,950 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:58:58,951 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:58" (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 13:58:59,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:58:59,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:58:59,100 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-07 13:58:59,100 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:58:59,100 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:58:59,100 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-07 13:58:59,100 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:58:59,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:58:59,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:58:59,270 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:58:59,270 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-07 13:58:59,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:58:59 BoogieIcfgContainer [2020-07-07 13:58:59,274 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:58:59,275 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:58:59,275 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:58:59,278 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:58:59,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:58:58" (1/3) ... [2020-07-07 13:58:59,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f7f4436 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:58:59, skipping insertion in model container [2020-07-07 13:58:59,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:58" (2/3) ... [2020-07-07 13:58:59,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f7f4436 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:58:59, skipping insertion in model container [2020-07-07 13:58:59,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:58:59" (3/3) ... [2020-07-07 13:58:59,282 INFO L109 eAbstractionObserver]: Analyzing ICFG sum04-1.i [2020-07-07 13:58:59,293 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:58:59,300 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 13:58:59,314 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 13:58:59,335 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:58:59,336 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:58:59,336 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:58:59,336 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:58:59,336 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:58:59,336 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:58:59,337 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:58:59,337 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:58:59,351 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-07-07 13:58:59,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-07 13:58:59,361 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:58:59,362 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:58:59,362 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:58:59,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:58:59,368 INFO L82 PathProgramCache]: Analyzing trace with hash -649727231, now seen corresponding path program 1 times [2020-07-07 13:58:59,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:58:59,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1426076576] [2020-07-07 13:58:59,375 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:58:59,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:58:59,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:58:59,482 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 13:58:59,482 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:58:59,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1426076576] [2020-07-07 13:58:59,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:58:59,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-07 13:58:59,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844029508] [2020-07-07 13:58:59,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-07 13:58:59,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:58:59,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-07 13:58:59,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-07 13:58:59,506 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2020-07-07 13:58:59,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:58:59,528 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2020-07-07 13:58:59,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-07 13:58:59,529 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-07-07 13:58:59,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:58:59,536 INFO L225 Difference]: With dead ends: 35 [2020-07-07 13:58:59,536 INFO L226 Difference]: Without dead ends: 18 [2020-07-07 13:58:59,539 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 13:58:59,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-07-07 13:58:59,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-07-07 13:58:59,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-07-07 13:58:59,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-07-07 13:58:59,571 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 12 [2020-07-07 13:58:59,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:58:59,572 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-07-07 13:58:59,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-07 13:58:59,572 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-07-07 13:58:59,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-07 13:58:59,573 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:58:59,573 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:58:59,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:58:59,574 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:58:59,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:58:59,574 INFO L82 PathProgramCache]: Analyzing trace with hash -662656525, now seen corresponding path program 1 times [2020-07-07 13:58:59,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:58:59,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1187520540] [2020-07-07 13:58:59,575 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:58:59,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:58:59,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:58:59,632 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 13:58:59,632 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:58:59,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1187520540] [2020-07-07 13:58:59,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:58:59,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:58:59,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497491202] [2020-07-07 13:58:59,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:58:59,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:58:59,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:58:59,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:58:59,635 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 3 states. [2020-07-07 13:58:59,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:58:59,727 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2020-07-07 13:58:59,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:58:59,729 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-07-07 13:58:59,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:58:59,730 INFO L225 Difference]: With dead ends: 34 [2020-07-07 13:58:59,730 INFO L226 Difference]: Without dead ends: 23 [2020-07-07 13:58:59,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:58:59,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-07-07 13:58:59,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2020-07-07 13:58:59,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-07-07 13:58:59,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-07-07 13:58:59,749 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 12 [2020-07-07 13:58:59,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:58:59,760 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-07-07 13:58:59,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:58:59,760 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-07-07 13:58:59,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-07 13:58:59,761 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:58:59,762 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:58:59,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 13:58:59,764 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:58:59,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:58:59,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1659803531, now seen corresponding path program 1 times [2020-07-07 13:58:59,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:58:59,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1475443935] [2020-07-07 13:58:59,766 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 [2020-07-07 13:59:02,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:02,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:02,139 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 13:59:02,188 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:59:02,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1475443935] [2020-07-07 13:59:02,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:59:02,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 13:59:02,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747618539] [2020-07-07 13:59:02,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 13:59:02,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:59:02,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 13:59:02,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-07-07 13:59:02,191 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 6 states. [2020-07-07 13:59:02,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:59:02,253 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2020-07-07 13:59:02,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 13:59:02,254 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-07-07 13:59:02,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:59:02,255 INFO L225 Difference]: With dead ends: 40 [2020-07-07 13:59:02,255 INFO L226 Difference]: Without dead ends: 29 [2020-07-07 13:59:02,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-07-07 13:59:02,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-07-07 13:59:02,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2020-07-07 13:59:02,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-07-07 13:59:02,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-07-07 13:59:02,264 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 18 [2020-07-07 13:59:02,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:59:02,264 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-07-07 13:59:02,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 13:59:02,265 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-07-07 13:59:02,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-07 13:59:02,265 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:59:02,266 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:59:02,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 13:59:02,266 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:59:02,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:59:02,267 INFO L82 PathProgramCache]: Analyzing trace with hash 891941667, now seen corresponding path program 2 times [2020-07-07 13:59:02,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:59:02,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [569215600] [2020-07-07 13:59:02,268 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 [2020-07-07 13:59:04,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:04,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:04,505 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 13:59:04,600 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:59:04,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [569215600] [2020-07-07 13:59:04,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:59:04,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-07 13:59:04,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324033745] [2020-07-07 13:59:04,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-07 13:59:04,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:59:04,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-07 13:59:04,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2020-07-07 13:59:04,603 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 9 states. [2020-07-07 13:59:04,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:59:04,666 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2020-07-07 13:59:04,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-07 13:59:04,667 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-07-07 13:59:04,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:59:04,668 INFO L225 Difference]: With dead ends: 45 [2020-07-07 13:59:04,668 INFO L226 Difference]: Without dead ends: 34 [2020-07-07 13:59:04,669 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 6 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2020-07-07 13:59:04,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-07-07 13:59:04,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-07-07 13:59:04,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-07 13:59:04,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2020-07-07 13:59:04,677 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 24 [2020-07-07 13:59:04,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:59:04,678 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2020-07-07 13:59:04,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-07 13:59:04,678 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2020-07-07 13:59:04,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-07 13:59:04,679 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:59:04,679 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:59:04,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 13:59:04,680 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:59:04,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:59:04,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1860713659, now seen corresponding path program 3 times [2020-07-07 13:59:04,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:59:04,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447663429] [2020-07-07 13:59:04,681 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 [2020-07-07 13:59:06,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:06,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:06,896 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 13:59:07,051 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:59:07,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447663429] [2020-07-07 13:59:07,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:59:07,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-07-07 13:59:07,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479189191] [2020-07-07 13:59:07,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-07 13:59:07,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:59:07,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-07 13:59:07,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-07-07 13:59:07,054 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand 12 states. [2020-07-07 13:59:07,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:59:07,156 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2020-07-07 13:59:07,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-07 13:59:07,156 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2020-07-07 13:59:07,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:59:07,157 INFO L225 Difference]: With dead ends: 44 [2020-07-07 13:59:07,158 INFO L226 Difference]: Without dead ends: 39 [2020-07-07 13:59:07,160 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 8 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-07-07 13:59:07,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-07-07 13:59:07,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2020-07-07 13:59:07,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-07-07 13:59:07,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2020-07-07 13:59:07,171 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 30 [2020-07-07 13:59:07,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:59:07,172 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2020-07-07 13:59:07,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-07 13:59:07,172 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2020-07-07 13:59:07,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-07-07 13:59:07,174 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:59:07,175 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:59:07,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 13:59:07,175 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:59:07,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:59:07,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1338804338, now seen corresponding path program 1 times [2020-07-07 13:59:07,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:59:07,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1488450612] [2020-07-07 13:59:07,177 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 13:59:09,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 13:59:09,372 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 13:59:09,381 INFO L168 Benchmark]: Toolchain (without parser) took 10687.41 ms. Allocated memory was 144.7 MB in the beginning and 233.3 MB in the end (delta: 88.6 MB). Free memory was 103.3 MB in the beginning and 113.1 MB in the end (delta: -9.8 MB). Peak memory consumption was 78.8 MB. Max. memory is 7.1 GB. [2020-07-07 13:59:09,383 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 144.7 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-07 13:59:09,385 INFO L168 Benchmark]: CACSL2BoogieTranslator took 226.92 ms. Allocated memory is still 144.7 MB. Free memory was 102.9 MB in the beginning and 93.2 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-07-07 13:59:09,388 INFO L168 Benchmark]: Boogie Preprocessor took 29.69 ms. Allocated memory is still 144.7 MB. Free memory was 93.2 MB in the beginning and 91.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-07-07 13:59:09,390 INFO L168 Benchmark]: RCFGBuilder took 324.62 ms. Allocated memory was 144.7 MB in the beginning and 201.3 MB in the end (delta: 56.6 MB). Free memory was 91.7 MB in the beginning and 169.8 MB in the end (delta: -78.1 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-07-07 13:59:09,393 INFO L168 Benchmark]: TraceAbstraction took 10101.43 ms. Allocated memory was 201.3 MB in the beginning and 233.3 MB in the end (delta: 32.0 MB). Free memory was 169.2 MB in the beginning and 113.1 MB in the end (delta: 56.1 MB). Peak memory consumption was 88.1 MB. Max. memory is 7.1 GB. [2020-07-07 13:59:09,399 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 144.7 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 226.92 ms. Allocated memory is still 144.7 MB. Free memory was 102.9 MB in the beginning and 93.2 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.69 ms. Allocated memory is still 144.7 MB. Free memory was 93.2 MB in the beginning and 91.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 324.62 ms. Allocated memory was 144.7 MB in the beginning and 201.3 MB in the end (delta: 56.6 MB). Free memory was 91.7 MB in the beginning and 169.8 MB in the end (delta: -78.1 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10101.43 ms. Allocated memory was 201.3 MB in the beginning and 233.3 MB in the end (delta: 32.0 MB). Free memory was 169.2 MB in the beginning and 113.1 MB in the end (delta: 56.1 MB). Peak memory consumption was 88.1 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...