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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label48.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:54:09,641 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:54:09,644 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:54:09,664 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:54:09,664 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:54:09,667 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:54:09,669 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:54:09,680 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:54:09,686 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:54:09,688 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:54:09,689 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:54:09,691 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:54:09,691 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:54:09,694 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:54:09,697 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:54:09,698 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:54:09,700 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:54:09,701 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:54:09,703 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:54:09,708 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:54:09,713 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:54:09,716 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:54:09,718 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:54:09,719 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:54:09,722 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 21:54:09,733 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:54:09,733 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:54:09,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:54:09,736 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:54:09,768 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:54:09,768 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:54:09,770 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:54:09,770 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:54:09,773 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:54:09,774 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:54:09,774 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:54:09,774 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:54:09,774 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:54:09,774 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:54:09,775 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:54:09,775 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:54:09,775 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:54:09,775 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:54:09,775 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:54:09,775 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:54:09,776 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:54:09,776 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:54:09,778 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:54:09,778 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:54:09,778 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:54:09,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:54:09,779 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:54:09,779 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:54:09,779 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:54:09,779 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:54:09,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:54:09,780 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:54:09,780 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 21:54:10,079 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:54:10,093 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:54:10,097 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:54:10,098 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:54:10,099 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:54:10,099 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label48.c [2019-10-13 21:54:10,175 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e097087a/452681faeeaa4fa8ba4eab436a02ebd1/FLAG298be8387 [2019-10-13 21:54:10,897 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:54:10,898 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label48.c [2019-10-13 21:54:10,926 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e097087a/452681faeeaa4fa8ba4eab436a02ebd1/FLAG298be8387 [2019-10-13 21:54:11,028 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e097087a/452681faeeaa4fa8ba4eab436a02ebd1 [2019-10-13 21:54:11,041 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:54:11,042 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:54:11,047 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:54:11,048 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:54:11,051 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:54:11,052 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:54:11" (1/1) ... [2019-10-13 21:54:11,055 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70e2977e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:11, skipping insertion in model container [2019-10-13 21:54:11,056 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:54:11" (1/1) ... [2019-10-13 21:54:11,065 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:54:11,144 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:54:12,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:54:12,032 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:54:12,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:54:12,334 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:54:12,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:12 WrapperNode [2019-10-13 21:54:12,335 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:54:12,336 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:54:12,336 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:54:12,336 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:54:12,352 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:12" (1/1) ... [2019-10-13 21:54:12,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:12" (1/1) ... [2019-10-13 21:54:12,392 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:12" (1/1) ... [2019-10-13 21:54:12,392 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:12" (1/1) ... [2019-10-13 21:54:12,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:12" (1/1) ... [2019-10-13 21:54:12,479 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:12" (1/1) ... [2019-10-13 21:54:12,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:12" (1/1) ... [2019-10-13 21:54:12,513 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:54:12,514 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:54:12,514 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:54:12,515 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:54:12,516 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:12" (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 [2019-10-13 21:54:12,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:54:12,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:54:12,583 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-13 21:54:12,583 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-13 21:54:12,583 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:54:12,584 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-13 21:54:12,584 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-13 21:54:12,585 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:54:12,585 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:54:12,585 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 21:54:12,586 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:54:12,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:54:12,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:54:32,816 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:54:32,817 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 21:54:32,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:54:32 BoogieIcfgContainer [2019-10-13 21:54:32,819 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:54:32,821 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:54:32,821 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:54:32,825 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:54:32,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:54:11" (1/3) ... [2019-10-13 21:54:32,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@561fba31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:54:32, skipping insertion in model container [2019-10-13 21:54:32,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:12" (2/3) ... [2019-10-13 21:54:32,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@561fba31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:54:32, skipping insertion in model container [2019-10-13 21:54:32,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:54:32" (3/3) ... [2019-10-13 21:54:32,829 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem16_label48.c [2019-10-13 21:54:32,839 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:54:32,847 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:54:32,858 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:54:32,886 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:54:32,887 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:54:32,887 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:54:32,887 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:54:32,887 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:54:32,887 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:54:32,888 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:54:32,888 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:54:32,913 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states. [2019-10-13 21:54:32,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-13 21:54:32,919 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:54:32,920 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:54:32,922 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:54:32,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:54:32,928 INFO L82 PathProgramCache]: Analyzing trace with hash 863569215, now seen corresponding path program 1 times [2019-10-13 21:54:32,937 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:54:32,937 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112801687] [2019-10-13 21:54:32,938 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:54:32,938 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:54:32,938 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:54:33,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:54:33,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:54:33,173 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112801687] [2019-10-13 21:54:33,174 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:54:33,175 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:54:33,175 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776353330] [2019-10-13 21:54:33,179 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:54:33,180 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:54:33,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:54:33,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:54:33,197 INFO L87 Difference]: Start difference. First operand 244 states. Second operand 3 states. [2019-10-13 21:54:34,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:54:34,938 INFO L93 Difference]: Finished difference Result 718 states and 1389 transitions. [2019-10-13 21:54:34,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:54:34,940 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-10-13 21:54:34,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:54:34,958 INFO L225 Difference]: With dead ends: 718 [2019-10-13 21:54:34,959 INFO L226 Difference]: Without dead ends: 471 [2019-10-13 21:54:34,965 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:54:34,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2019-10-13 21:54:35,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 461. [2019-10-13 21:54:35,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2019-10-13 21:54:35,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 873 transitions. [2019-10-13 21:54:35,047 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 873 transitions. Word has length 11 [2019-10-13 21:54:35,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:54:35,047 INFO L462 AbstractCegarLoop]: Abstraction has 461 states and 873 transitions. [2019-10-13 21:54:35,047 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:54:35,047 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 873 transitions. [2019-10-13 21:54:35,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-13 21:54:35,049 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:54:35,049 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:54:35,050 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:54:35,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:54:35,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1645968157, now seen corresponding path program 1 times [2019-10-13 21:54:35,050 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:54:35,053 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68850184] [2019-10-13 21:54:35,053 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:54:35,053 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:54:35,053 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:54:35,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:54:35,182 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:54:35,183 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68850184] [2019-10-13 21:54:35,183 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:54:35,183 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:54:35,183 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640677065] [2019-10-13 21:54:35,185 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:54:35,185 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:54:35,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:54:35,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:54:35,186 INFO L87 Difference]: Start difference. First operand 461 states and 873 transitions. Second operand 5 states. [2019-10-13 21:54:37,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:54:37,300 INFO L93 Difference]: Finished difference Result 1387 states and 2652 transitions. [2019-10-13 21:54:37,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:54:37,301 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2019-10-13 21:54:37,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:54:37,309 INFO L225 Difference]: With dead ends: 1387 [2019-10-13 21:54:37,310 INFO L226 Difference]: Without dead ends: 931 [2019-10-13 21:54:37,312 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:54:37,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2019-10-13 21:54:37,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 923. [2019-10-13 21:54:37,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 923 states. [2019-10-13 21:54:37,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 1537 transitions. [2019-10-13 21:54:37,422 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 1537 transitions. Word has length 23 [2019-10-13 21:54:37,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:54:37,422 INFO L462 AbstractCegarLoop]: Abstraction has 923 states and 1537 transitions. [2019-10-13 21:54:37,423 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:54:37,423 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 1537 transitions. [2019-10-13 21:54:37,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-13 21:54:37,424 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:54:37,425 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:54:37,425 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:54:37,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:54:37,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1633645332, now seen corresponding path program 1 times [2019-10-13 21:54:37,426 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:54:37,426 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158078115] [2019-10-13 21:54:37,426 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:54:37,427 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:54:37,427 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:54:37,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:54:37,550 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-13 21:54:37,551 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158078115] [2019-10-13 21:54:37,551 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718908599] [2019-10-13 21:54:37,551 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:54:37,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:54:37,637 INFO L256 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 21:54:37,642 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:54:37,691 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:54:37,692 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:54:37,723 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:54:37,724 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:54:37,724 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2019-10-13 21:54:37,724 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596344210] [2019-10-13 21:54:37,725 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:54:37,725 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:54:37,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:54:37,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:54:37,726 INFO L87 Difference]: Start difference. First operand 923 states and 1537 transitions. Second operand 3 states. [2019-10-13 21:54:38,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:54:38,983 INFO L93 Difference]: Finished difference Result 1381 states and 2201 transitions. [2019-10-13 21:54:38,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:54:38,983 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2019-10-13 21:54:38,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:54:38,994 INFO L225 Difference]: With dead ends: 1381 [2019-10-13 21:54:38,994 INFO L226 Difference]: Without dead ends: 1379 [2019-10-13 21:54:38,995 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 102 SyntacticMatches, 5 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:54:38,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1379 states. [2019-10-13 21:54:39,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1379 to 933. [2019-10-13 21:54:39,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 933 states. [2019-10-13 21:54:39,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1554 transitions. [2019-10-13 21:54:39,041 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1554 transitions. Word has length 52 [2019-10-13 21:54:39,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:54:39,041 INFO L462 AbstractCegarLoop]: Abstraction has 933 states and 1554 transitions. [2019-10-13 21:54:39,041 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:54:39,041 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1554 transitions. [2019-10-13 21:54:39,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-10-13 21:54:39,044 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:54:39,044 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:54:39,257 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:54:39,258 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:54:39,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:54:39,258 INFO L82 PathProgramCache]: Analyzing trace with hash -623852981, now seen corresponding path program 1 times [2019-10-13 21:54:39,259 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:54:39,259 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047871916] [2019-10-13 21:54:39,259 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:54:39,259 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:54:39,260 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:54:39,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:54:39,432 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:54:39,432 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047871916] [2019-10-13 21:54:39,432 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:54:39,432 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:54:39,433 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252498257] [2019-10-13 21:54:39,433 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:54:39,433 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:54:39,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:54:39,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:54:39,434 INFO L87 Difference]: Start difference. First operand 933 states and 1554 transitions. Second operand 6 states. [2019-10-13 21:54:41,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:54:41,626 INFO L93 Difference]: Finished difference Result 2572 states and 4312 transitions. [2019-10-13 21:54:41,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:54:41,626 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2019-10-13 21:54:41,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:54:41,638 INFO L225 Difference]: With dead ends: 2572 [2019-10-13 21:54:41,638 INFO L226 Difference]: Without dead ends: 1644 [2019-10-13 21:54:41,641 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:54:41,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1644 states. [2019-10-13 21:54:41,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1644 to 1608. [2019-10-13 21:54:41,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1608 states. [2019-10-13 21:54:41,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1608 states to 1608 states and 2455 transitions. [2019-10-13 21:54:41,696 INFO L78 Accepts]: Start accepts. Automaton has 1608 states and 2455 transitions. Word has length 67 [2019-10-13 21:54:41,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:54:41,697 INFO L462 AbstractCegarLoop]: Abstraction has 1608 states and 2455 transitions. [2019-10-13 21:54:41,697 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:54:41,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1608 states and 2455 transitions. [2019-10-13 21:54:41,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-10-13 21:54:41,701 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:54:41,701 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:54:41,702 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:54:41,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:54:41,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1197635685, now seen corresponding path program 1 times [2019-10-13 21:54:41,702 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:54:41,703 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374555893] [2019-10-13 21:54:41,703 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:54:41,703 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:54:41,703 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:54:41,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:54:41,981 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 64 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:54:41,982 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374555893] [2019-10-13 21:54:41,982 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685797585] [2019-10-13 21:54:41,982 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:54:42,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:54:42,084 INFO L256 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 21:54:42,094 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:54:42,146 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 64 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:54:42,147 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:54:42,246 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 64 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:54:42,246 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1827596975] [2019-10-13 21:54:42,285 INFO L162 IcfgInterpreter]: Started Sifa with 77 locations of interest [2019-10-13 21:54:42,285 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:54:42,292 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:54:42,301 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:54:42,303 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:54:42,564 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 57 for LOIs [2019-10-13 21:54:42,708 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 58 [2019-10-13 21:54:43,047 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 58 [2019-10-13 21:54:43,777 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:54:43,778 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:307) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) 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:316) 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) Caused by: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; at de.uni_freiburg.informatik.ultimate.lib.sifa.PriorityWorklist.add(PriorityWorklist.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.lambda$2(DagInterpreter.java:135) at java.lang.Iterable.forEach(Iterable.java:75) at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:135) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:118) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:178) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:169) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) 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.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:299) ... 21 more [2019-10-13 21:54:43,785 INFO L168 Benchmark]: Toolchain (without parser) took 32741.86 ms. Allocated memory was 146.8 MB in the beginning and 454.0 MB in the end (delta: 307.2 MB). Free memory was 98.8 MB in the beginning and 370.3 MB in the end (delta: -271.6 MB). Peak memory consumption was 35.7 MB. Max. memory is 7.1 GB. [2019-10-13 21:54:43,786 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 146.8 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-13 21:54:43,787 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1288.44 ms. Allocated memory was 146.8 MB in the beginning and 210.2 MB in the end (delta: 63.4 MB). Free memory was 98.6 MB in the beginning and 138.8 MB in the end (delta: -40.3 MB). Peak memory consumption was 36.3 MB. Max. memory is 7.1 GB. [2019-10-13 21:54:43,789 INFO L168 Benchmark]: Boogie Preprocessor took 177.72 ms. Allocated memory is still 210.2 MB. Free memory was 138.8 MB in the beginning and 128.3 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2019-10-13 21:54:43,791 INFO L168 Benchmark]: RCFGBuilder took 20305.18 ms. Allocated memory was 210.2 MB in the beginning and 313.5 MB in the end (delta: 103.3 MB). Free memory was 128.3 MB in the beginning and 212.3 MB in the end (delta: -84.0 MB). Peak memory consumption was 126.9 MB. Max. memory is 7.1 GB. [2019-10-13 21:54:43,792 INFO L168 Benchmark]: TraceAbstraction took 10961.38 ms. Allocated memory was 313.5 MB in the beginning and 454.0 MB in the end (delta: 140.5 MB). Free memory was 212.2 MB in the beginning and 370.3 MB in the end (delta: -158.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-10-13 21:54:43,799 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 146.8 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1288.44 ms. Allocated memory was 146.8 MB in the beginning and 210.2 MB in the end (delta: 63.4 MB). Free memory was 98.6 MB in the beginning and 138.8 MB in the end (delta: -40.3 MB). Peak memory consumption was 36.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 177.72 ms. Allocated memory is still 210.2 MB. Free memory was 138.8 MB in the beginning and 128.3 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 20305.18 ms. Allocated memory was 210.2 MB in the beginning and 313.5 MB in the end (delta: 103.3 MB). Free memory was 128.3 MB in the beginning and 212.3 MB in the end (delta: -84.0 MB). Peak memory consumption was 126.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10961.38 ms. Allocated memory was 313.5 MB in the beginning and 454.0 MB in the end (delta: 140.5 MB). Free memory was 212.2 MB in the beginning and 370.3 MB in the end (delta: -158.1 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true;: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:307) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...