/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 0.1.25-267fbe0 [2020-07-17 14:54:00,290 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 14:54:00,292 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 14:54:00,305 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 14:54:00,306 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 14:54:00,307 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 14:54:00,308 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 14:54:00,310 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 14:54:00,312 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 14:54:00,312 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 14:54:00,313 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 14:54:00,315 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 14:54:00,315 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 14:54:00,316 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 14:54:00,317 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 14:54:00,318 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 14:54:00,319 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 14:54:00,320 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 14:54:00,322 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 14:54:00,323 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 14:54:00,327 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 14:54:00,328 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 14:54:00,333 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 14:54:00,334 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 14:54:00,338 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 14:54:00,355 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 14:54:00,356 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 14:54:00,358 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 14:54:00,359 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-17 14:54:00,373 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 14:54:00,374 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 14:54:00,376 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 14:54:00,376 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 14:54:00,376 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 14:54:00,377 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 14:54:00,377 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 14:54:00,377 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 14:54:00,377 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 14:54:00,377 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 14:54:00,378 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 14:54:00,379 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 14:54:00,379 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 14:54:00,379 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 14:54:00,380 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 14:54:00,380 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 14:54:00,380 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 14:54:00,380 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 14:54:00,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 14:54:00,381 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 14:54:00,381 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 14:54:00,381 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 14:54:00,381 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-17 14:54:00,684 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 14:54:00,702 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 14:54:00,706 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 14:54:00,707 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 14:54:00,708 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 14:54:00,712 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum04-1.i [2020-07-17 14:54:00,792 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7408e9e1c/540805e218f541b495a6c6aa7ef17f94/FLAGda17483cb [2020-07-17 14:54:01,302 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 14:54:01,303 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum04-1.i [2020-07-17 14:54:01,309 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7408e9e1c/540805e218f541b495a6c6aa7ef17f94/FLAGda17483cb [2020-07-17 14:54:01,725 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7408e9e1c/540805e218f541b495a6c6aa7ef17f94 [2020-07-17 14:54:01,739 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 14:54:01,743 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 14:54:01,744 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 14:54:01,745 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 14:54:01,748 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 14:54:01,749 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 02:54:01" (1/1) ... [2020-07-17 14:54:01,753 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@569b6f16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:54:01, skipping insertion in model container [2020-07-17 14:54:01,753 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 02:54:01" (1/1) ... [2020-07-17 14:54:01,762 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 14:54:01,781 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 14:54:01,951 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 14:54:01,955 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 14:54:01,971 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 14:54:01,986 INFO L208 MainTranslator]: Completed translation [2020-07-17 14:54:01,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:54:01 WrapperNode [2020-07-17 14:54:01,986 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 14:54:01,987 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 14:54:01,987 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 14:54:01,987 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 14:54:02,000 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:54:01" (1/1) ... [2020-07-17 14:54:02,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:54:01" (1/1) ... [2020-07-17 14:54:02,005 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:54:01" (1/1) ... [2020-07-17 14:54:02,006 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:54:01" (1/1) ... [2020-07-17 14:54:02,009 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:54:01" (1/1) ... [2020-07-17 14:54:02,014 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:54:01" (1/1) ... [2020-07-17 14:54:02,015 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:54:01" (1/1) ... [2020-07-17 14:54:02,101 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 14:54:02,102 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 14:54:02,105 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 14:54:02,105 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 14:54:02,106 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:54:01" (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 [2020-07-17 14:54:02,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 14:54:02,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 14:54:02,182 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-17 14:54:02,182 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 14:54:02,182 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 14:54:02,182 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-17 14:54:02,183 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 14:54:02,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 14:54:02,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 14:54:02,371 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 14:54:02,371 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-17 14:54:02,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 02:54:02 BoogieIcfgContainer [2020-07-17 14:54:02,376 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 14:54:02,377 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 14:54:02,377 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 14:54:02,381 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 14:54:02,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 02:54:01" (1/3) ... [2020-07-17 14:54:02,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2755e43c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 02:54:02, skipping insertion in model container [2020-07-17 14:54:02,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:54:01" (2/3) ... [2020-07-17 14:54:02,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2755e43c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 02:54:02, skipping insertion in model container [2020-07-17 14:54:02,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 02:54:02" (3/3) ... [2020-07-17 14:54:02,385 INFO L109 eAbstractionObserver]: Analyzing ICFG sum04-1.i [2020-07-17 14:54:02,395 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 14:54:02,403 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 14:54:02,419 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 14:54:02,443 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 14:54:02,444 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 14:54:02,444 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-17 14:54:02,444 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 14:54:02,444 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 14:54:02,444 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 14:54:02,445 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 14:54:02,445 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 14:54:02,460 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-07-17 14:54:02,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-17 14:54:02,471 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:54:02,472 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:54:02,473 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:54:02,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:54:02,480 INFO L82 PathProgramCache]: Analyzing trace with hash -649727231, now seen corresponding path program 1 times [2020-07-17 14:54:02,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:54:02,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [464542691] [2020-07-17 14:54:02,490 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:54:02,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:54:02,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:54:02,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:54:02,614 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:54:02,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [464542691] [2020-07-17 14:54:02,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:54:02,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-17 14:54:02,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873224769] [2020-07-17 14:54:02,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-17 14:54:02,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:54:02,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-17 14:54:02,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-17 14:54:02,644 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2020-07-17 14:54:02,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:54:02,682 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2020-07-17 14:54:02,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-17 14:54:02,684 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-07-17 14:54:02,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:54:02,694 INFO L225 Difference]: With dead ends: 35 [2020-07-17 14:54:02,694 INFO L226 Difference]: Without dead ends: 18 [2020-07-17 14:54:02,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-17 14:54:02,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-07-17 14:54:02,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-07-17 14:54:02,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-07-17 14:54:02,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-07-17 14:54:02,755 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 12 [2020-07-17 14:54:02,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:54:02,756 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-07-17 14:54:02,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-17 14:54:02,757 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-07-17 14:54:02,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-17 14:54:02,758 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:54:02,758 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:54:02,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 14:54:02,760 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:54:02,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:54:02,762 INFO L82 PathProgramCache]: Analyzing trace with hash -662656525, now seen corresponding path program 1 times [2020-07-17 14:54:02,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:54:02,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [215240478] [2020-07-17 14:54:02,764 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:54:02,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:54:02,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:54:02,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:54:02,896 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:54:02,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [215240478] [2020-07-17 14:54:02,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:54:02,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 14:54:02,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511730113] [2020-07-17 14:54:02,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 14:54:02,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:54:02,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 14:54:02,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 14:54:02,900 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 3 states. [2020-07-17 14:54:03,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:54:03,103 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2020-07-17 14:54:03,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 14:54:03,106 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-07-17 14:54:03,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:54:03,107 INFO L225 Difference]: With dead ends: 34 [2020-07-17 14:54:03,108 INFO L226 Difference]: Without dead ends: 23 [2020-07-17 14:54:03,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 14:54:03,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-07-17 14:54:03,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2020-07-17 14:54:03,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-07-17 14:54:03,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-07-17 14:54:03,126 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 12 [2020-07-17 14:54:03,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:54:03,127 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-07-17 14:54:03,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 14:54:03,127 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-07-17 14:54:03,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-17 14:54:03,129 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:54:03,129 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:54:03,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 14:54:03,130 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:54:03,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:54:03,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1659803531, now seen corresponding path program 1 times [2020-07-17 14:54:03,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:54:03,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [63505409] [2020-07-17 14:54:03,132 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:54:05,374 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-07-17 14:54:05,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:54:05,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:54:05,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:54:05,572 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:54:05,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [63505409] [2020-07-17 14:54:05,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:54:05,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-17 14:54:05,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360543750] [2020-07-17 14:54:05,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-17 14:54:05,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:54:05,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-17 14:54:05,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-07-17 14:54:05,575 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 6 states. [2020-07-17 14:54:05,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:54:05,637 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2020-07-17 14:54:05,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-17 14:54:05,638 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-07-17 14:54:05,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:54:05,639 INFO L225 Difference]: With dead ends: 40 [2020-07-17 14:54:05,639 INFO L226 Difference]: Without dead ends: 29 [2020-07-17 14:54:05,640 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 [2020-07-17 14:54:05,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-07-17 14:54:05,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2020-07-17 14:54:05,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-07-17 14:54:05,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-07-17 14:54:05,647 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 18 [2020-07-17 14:54:05,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:54:05,648 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-07-17 14:54:05,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-17 14:54:05,648 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-07-17 14:54:05,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-17 14:54:05,649 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:54:05,650 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:54:05,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 14:54:05,650 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:54:05,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:54:05,651 INFO L82 PathProgramCache]: Analyzing trace with hash 891941667, now seen corresponding path program 2 times [2020-07-17 14:54:05,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:54:05,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [657540015] [2020-07-17 14:54:05,652 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:54:07,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:54:07,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:54:07,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:54:07,982 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:54:07,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [657540015] [2020-07-17 14:54:07,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:54:07,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-17 14:54:07,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540644033] [2020-07-17 14:54:07,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-17 14:54:07,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:54:07,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-17 14:54:07,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2020-07-17 14:54:07,985 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 9 states. [2020-07-17 14:54:08,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:54:08,055 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2020-07-17 14:54:08,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-17 14:54:08,056 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-07-17 14:54:08,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:54:08,057 INFO L225 Difference]: With dead ends: 45 [2020-07-17 14:54:08,057 INFO L226 Difference]: Without dead ends: 34 [2020-07-17 14:54:08,058 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 [2020-07-17 14:54:08,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-07-17 14:54:08,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-07-17 14:54:08,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-17 14:54:08,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2020-07-17 14:54:08,066 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 24 [2020-07-17 14:54:08,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:54:08,067 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2020-07-17 14:54:08,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-17 14:54:08,067 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2020-07-17 14:54:08,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-17 14:54:08,068 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:54:08,068 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:54:08,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-17 14:54:08,069 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:54:08,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:54:08,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1860713659, now seen corresponding path program 3 times [2020-07-17 14:54:08,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:54:08,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1617804494] [2020-07-17 14:54:08,070 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:54:10,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:54:10,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:54:10,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:54:10,441 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:54:10,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1617804494] [2020-07-17 14:54:10,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:54:10,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-07-17 14:54:10,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895228841] [2020-07-17 14:54:10,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-17 14:54:10,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:54:10,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-17 14:54:10,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-07-17 14:54:10,444 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand 12 states. [2020-07-17 14:54:10,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:54:10,515 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2020-07-17 14:54:10,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-17 14:54:10,515 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2020-07-17 14:54:10,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:54:10,516 INFO L225 Difference]: With dead ends: 44 [2020-07-17 14:54:10,517 INFO L226 Difference]: Without dead ends: 39 [2020-07-17 14:54:10,517 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 [2020-07-17 14:54:10,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-07-17 14:54:10,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2020-07-17 14:54:10,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-07-17 14:54:10,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2020-07-17 14:54:10,525 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 30 [2020-07-17 14:54:10,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:54:10,525 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2020-07-17 14:54:10,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-17 14:54:10,525 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2020-07-17 14:54:10,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-07-17 14:54:10,526 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:54:10,527 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:54:10,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-17 14:54:10,527 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:54:10,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:54:10,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1338804338, now seen corresponding path program 1 times [2020-07-17 14:54:10,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:54:10,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2108838350] [2020-07-17 14:54:10,528 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:54:12,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-17 14:54:12,788 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:526) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:465) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:290) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:191) 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) [2020-07-17 14:54:12,796 INFO L168 Benchmark]: Toolchain (without parser) took 11054.53 ms. Allocated memory was 144.2 MB in the beginning and 232.3 MB in the end (delta: 88.1 MB). Free memory was 102.3 MB in the beginning and 116.9 MB in the end (delta: -14.7 MB). Peak memory consumption was 73.4 MB. Max. memory is 7.1 GB. [2020-07-17 14:54:12,797 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 144.2 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-17 14:54:12,799 INFO L168 Benchmark]: CACSL2BoogieTranslator took 242.17 ms. Allocated memory is still 144.2 MB. Free memory was 101.8 MB in the beginning and 92.5 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-07-17 14:54:12,801 INFO L168 Benchmark]: Boogie Preprocessor took 115.01 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 92.5 MB in the beginning and 181.3 MB in the end (delta: -88.8 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2020-07-17 14:54:12,803 INFO L168 Benchmark]: RCFGBuilder took 273.84 ms. Allocated memory is still 201.3 MB. Free memory was 181.3 MB in the beginning and 168.1 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2020-07-17 14:54:12,805 INFO L168 Benchmark]: TraceAbstraction took 10413.89 ms. Allocated memory was 201.3 MB in the beginning and 232.3 MB in the end (delta: 30.9 MB). Free memory was 168.1 MB in the beginning and 116.9 MB in the end (delta: 51.2 MB). Peak memory consumption was 82.1 MB. Max. memory is 7.1 GB. [2020-07-17 14:54:12,812 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 144.2 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 242.17 ms. Allocated memory is still 144.2 MB. Free memory was 101.8 MB in the beginning and 92.5 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.01 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 92.5 MB in the beginning and 181.3 MB in the end (delta: -88.8 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 273.84 ms. Allocated memory is still 201.3 MB. Free memory was 181.3 MB in the beginning and 168.1 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10413.89 ms. Allocated memory was 201.3 MB in the beginning and 232.3 MB in the end (delta: 30.9 MB). Free memory was 168.1 MB in the beginning and 116.9 MB in the end (delta: 51.2 MB). Peak memory consumption was 82.1 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...