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/Problem12_label20.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 02:39:12,415 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 02:39:12,418 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 02:39:12,437 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 02:39:12,437 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 02:39:12,439 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 02:39:12,441 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 02:39:12,451 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 02:39:12,456 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 02:39:12,459 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 02:39:12,460 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 02:39:12,461 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 02:39:12,461 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 02:39:12,462 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 02:39:12,463 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 02:39:12,464 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 02:39:12,465 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 02:39:12,465 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 02:39:12,467 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 02:39:12,469 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 02:39:12,470 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 02:39:12,472 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 02:39:12,473 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 02:39:12,473 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 02:39:12,475 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-07 02:39:12,483 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 02:39:12,485 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 02:39:12,485 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 02:39:12,487 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 [2019-10-07 02:39:12,501 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 02:39:12,502 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 02:39:12,503 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 02:39:12,503 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 02:39:12,503 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 02:39:12,504 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 02:39:12,504 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 02:39:12,504 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 02:39:12,504 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 02:39:12,504 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 02:39:12,505 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 02:39:12,505 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 02:39:12,505 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 02:39:12,505 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 02:39:12,505 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 02:39:12,506 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 02:39:12,506 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 02:39:12,506 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 02:39:12,506 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 02:39:12,506 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 02:39:12,507 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 02:39:12,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 02:39:12,507 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 02:39:12,507 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 02:39:12,507 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 02:39:12,508 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 02:39:12,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 02:39:12,508 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 02:39:12,508 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 [2019-10-07 02:39:12,832 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 02:39:12,858 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 02:39:12,861 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 02:39:12,863 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 02:39:12,863 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 02:39:12,864 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label20.c [2019-10-07 02:39:12,941 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d81075862/362efff7958040948bd95d1681d43bc2/FLAG10dc846a1 [2019-10-07 02:39:13,691 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 02:39:13,692 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label20.c [2019-10-07 02:39:13,727 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d81075862/362efff7958040948bd95d1681d43bc2/FLAG10dc846a1 [2019-10-07 02:39:13,795 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d81075862/362efff7958040948bd95d1681d43bc2 [2019-10-07 02:39:13,806 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 02:39:13,808 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 02:39:13,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 02:39:13,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 02:39:13,816 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 02:39:13,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:39:13" (1/1) ... [2019-10-07 02:39:13,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5efb01e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:39:13, skipping insertion in model container [2019-10-07 02:39:13,821 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:39:13" (1/1) ... [2019-10-07 02:39:13,830 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 02:39:13,999 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 02:39:15,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 02:39:15,564 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 02:39:16,274 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 02:39:16,305 INFO L192 MainTranslator]: Completed translation [2019-10-07 02:39:16,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:39:16 WrapperNode [2019-10-07 02:39:16,305 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 02:39:16,306 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 02:39:16,306 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 02:39:16,307 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 02:39:16,321 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:39:16" (1/1) ... [2019-10-07 02:39:16,321 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:39:16" (1/1) ... [2019-10-07 02:39:16,390 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:39:16" (1/1) ... [2019-10-07 02:39:16,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:39:16" (1/1) ... [2019-10-07 02:39:16,517 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:39:16" (1/1) ... [2019-10-07 02:39:16,556 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:39:16" (1/1) ... [2019-10-07 02:39:16,587 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:39:16" (1/1) ... [2019-10-07 02:39:16,612 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 02:39:16,613 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 02:39:16,613 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 02:39:16,613 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 02:39:16,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:39:16" (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 [2019-10-07 02:39:16,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 02:39:16,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 02:39:16,682 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-07 02:39:16,682 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-07 02:39:16,682 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-07 02:39:16,683 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-10-07 02:39:16,683 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 02:39:16,684 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-07 02:39:16,684 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-07 02:39:16,685 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-07 02:39:16,685 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-10-07 02:39:16,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 02:39:16,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 02:39:16,687 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 02:39:16,687 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 02:39:16,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 02:39:16,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 02:39:23,594 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 02:39:23,595 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 02:39:23,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:39:23 BoogieIcfgContainer [2019-10-07 02:39:23,599 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 02:39:23,600 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 02:39:23,600 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 02:39:23,605 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 02:39:23,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 02:39:13" (1/3) ... [2019-10-07 02:39:23,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79f94002 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:39:23, skipping insertion in model container [2019-10-07 02:39:23,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:39:16" (2/3) ... [2019-10-07 02:39:23,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79f94002 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:39:23, skipping insertion in model container [2019-10-07 02:39:23,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:39:23" (3/3) ... [2019-10-07 02:39:23,618 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label20.c [2019-10-07 02:39:23,637 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 02:39:23,651 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 02:39:23,668 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 02:39:23,730 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 02:39:23,730 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 02:39:23,731 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 02:39:23,731 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 02:39:23,731 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 02:39:23,731 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 02:39:23,731 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 02:39:23,732 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 02:39:23,787 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states. [2019-10-07 02:39:23,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-07 02:39:23,795 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 02:39:23,797 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 02:39:23,800 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 02:39:23,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 02:39:23,807 INFO L82 PathProgramCache]: Analyzing trace with hash -874965092, now seen corresponding path program 1 times [2019-10-07 02:39:23,817 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 02:39:23,818 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:39:23,818 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:39:23,818 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:39:23,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 02:39:23,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:39:24,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 02:39:24,164 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:39:24,165 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 02:39:24,165 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 02:39:24,169 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 02:39:24,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 02:39:24,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 02:39:24,188 INFO L87 Difference]: Start difference. First operand 694 states. Second operand 3 states. [2019-10-07 02:39:29,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 02:39:29,076 INFO L93 Difference]: Finished difference Result 2068 states and 4065 transitions. [2019-10-07 02:39:29,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 02:39:29,078 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-10-07 02:39:29,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 02:39:29,114 INFO L225 Difference]: With dead ends: 2068 [2019-10-07 02:39:29,114 INFO L226 Difference]: Without dead ends: 1371 [2019-10-07 02:39:29,122 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 02:39:29,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1371 states. [2019-10-07 02:39:29,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1371 to 1357. [2019-10-07 02:39:29,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1357 states. [2019-10-07 02:39:29,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1357 states to 1357 states and 2576 transitions. [2019-10-07 02:39:29,262 INFO L78 Accepts]: Start accepts. Automaton has 1357 states and 2576 transitions. Word has length 11 [2019-10-07 02:39:29,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 02:39:29,263 INFO L462 AbstractCegarLoop]: Abstraction has 1357 states and 2576 transitions. [2019-10-07 02:39:29,263 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 02:39:29,263 INFO L276 IsEmpty]: Start isEmpty. Operand 1357 states and 2576 transitions. [2019-10-07 02:39:29,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-07 02:39:29,265 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 02:39:29,266 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 02:39:29,266 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 02:39:29,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 02:39:29,266 INFO L82 PathProgramCache]: Analyzing trace with hash -263853734, now seen corresponding path program 1 times [2019-10-07 02:39:29,267 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 02:39:29,267 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:39:29,267 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:39:29,267 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:39:29,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 02:39:29,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:39:29,439 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 02:39:29,440 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:39:29,440 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 02:39:29,440 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 02:39:29,443 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 02:39:29,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 02:39:29,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 02:39:29,444 INFO L87 Difference]: Start difference. First operand 1357 states and 2576 transitions. Second operand 5 states. [2019-10-07 02:39:36,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 02:39:36,187 INFO L93 Difference]: Finished difference Result 4103 states and 7818 transitions. [2019-10-07 02:39:36,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 02:39:36,190 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2019-10-07 02:39:36,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 02:39:36,209 INFO L225 Difference]: With dead ends: 4103 [2019-10-07 02:39:36,210 INFO L226 Difference]: Without dead ends: 2751 [2019-10-07 02:39:36,217 INFO L606 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 [2019-10-07 02:39:36,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2751 states. [2019-10-07 02:39:36,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2751 to 2739. [2019-10-07 02:39:36,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2739 states. [2019-10-07 02:39:36,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2739 states to 2739 states and 4960 transitions. [2019-10-07 02:39:36,348 INFO L78 Accepts]: Start accepts. Automaton has 2739 states and 4960 transitions. Word has length 25 [2019-10-07 02:39:36,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 02:39:36,349 INFO L462 AbstractCegarLoop]: Abstraction has 2739 states and 4960 transitions. [2019-10-07 02:39:36,349 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 02:39:36,349 INFO L276 IsEmpty]: Start isEmpty. Operand 2739 states and 4960 transitions. [2019-10-07 02:39:36,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-07 02:39:36,351 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 02:39:36,351 INFO L385 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] [2019-10-07 02:39:36,352 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 02:39:36,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 02:39:36,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1358405302, now seen corresponding path program 1 times [2019-10-07 02:39:36,353 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 02:39:36,354 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:39:36,355 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:39:36,355 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:39:36,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 02:39:36,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:39:36,507 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-07 02:39:36,508 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:39:36,508 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 02:39:36,508 INFO L95 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 [2019-10-07 02:39:36,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:39:36,589 INFO L256 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-07 02:39:36,596 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 02:39:36,653 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-07 02:39:36,653 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 02:39:36,715 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-07 02:39:36,716 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 02:39:36,716 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 7 [2019-10-07 02:39:36,716 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 02:39:36,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 02:39:36,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-07 02:39:36,717 INFO L87 Difference]: Start difference. First operand 2739 states and 4960 transitions. Second operand 4 states. [2019-10-07 02:39:42,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 02:39:42,247 INFO L93 Difference]: Finished difference Result 7575 states and 13740 transitions. [2019-10-07 02:39:42,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 02:39:42,248 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2019-10-07 02:39:42,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 02:39:42,278 INFO L225 Difference]: With dead ends: 7575 [2019-10-07 02:39:42,279 INFO L226 Difference]: Without dead ends: 4841 [2019-10-07 02:39:42,287 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 53 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-07 02:39:42,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4841 states. [2019-10-07 02:39:42,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4841 to 4821. [2019-10-07 02:39:42,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4821 states. [2019-10-07 02:39:42,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4821 states to 4821 states and 8445 transitions. [2019-10-07 02:39:42,435 INFO L78 Accepts]: Start accepts. Automaton has 4821 states and 8445 transitions. Word has length 27 [2019-10-07 02:39:42,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 02:39:42,436 INFO L462 AbstractCegarLoop]: Abstraction has 4821 states and 8445 transitions. [2019-10-07 02:39:42,436 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 02:39:42,436 INFO L276 IsEmpty]: Start isEmpty. Operand 4821 states and 8445 transitions. [2019-10-07 02:39:42,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-07 02:39:42,440 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 02:39:42,440 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1] [2019-10-07 02:39:42,646 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 02:39:42,647 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 02:39:42,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 02:39:42,648 INFO L82 PathProgramCache]: Analyzing trace with hash 549060052, now seen corresponding path program 1 times [2019-10-07 02:39:42,648 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 02:39:42,649 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:39:42,649 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:39:42,649 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:39:42,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 02:39:42,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:39:42,813 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 02:39:42,813 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:39:42,813 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 02:39:42,814 INFO L95 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 [2019-10-07 02:39:42,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:39:42,917 INFO L256 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-07 02:39:42,923 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 02:39:43,037 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 02:39:43,037 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 02:39:43,120 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 02:39:43,121 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 02:39:43,121 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2019-10-07 02:39:43,121 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 02:39:43,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 02:39:43,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2019-10-07 02:39:43,123 INFO L87 Difference]: Start difference. First operand 4821 states and 8445 transitions. Second operand 5 states. [2019-10-07 02:39:50,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 02:39:50,354 INFO L93 Difference]: Finished difference Result 11877 states and 20918 transitions. [2019-10-07 02:39:50,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 02:39:50,356 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 57 [2019-10-07 02:39:50,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 02:39:50,396 INFO L225 Difference]: With dead ends: 11877 [2019-10-07 02:39:50,397 INFO L226 Difference]: Without dead ends: 7061 [2019-10-07 02:39:50,409 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2019-10-07 02:39:50,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7061 states. [2019-10-07 02:39:50,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7061 to 6931. [2019-10-07 02:39:50,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6931 states. [2019-10-07 02:39:50,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6931 states to 6931 states and 11299 transitions. [2019-10-07 02:39:50,627 INFO L78 Accepts]: Start accepts. Automaton has 6931 states and 11299 transitions. Word has length 57 [2019-10-07 02:39:50,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 02:39:50,627 INFO L462 AbstractCegarLoop]: Abstraction has 6931 states and 11299 transitions. [2019-10-07 02:39:50,628 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 02:39:50,628 INFO L276 IsEmpty]: Start isEmpty. Operand 6931 states and 11299 transitions. [2019-10-07 02:39:50,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-10-07 02:39:50,632 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 02:39:50,632 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2019-10-07 02:39:50,845 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 02:39:50,845 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 02:39:50,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 02:39:50,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1938895371, now seen corresponding path program 1 times [2019-10-07 02:39:50,848 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 02:39:50,848 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:39:50,848 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:39:50,849 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:39:50,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 02:39:50,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:39:51,020 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 02:39:51,020 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:39:51,021 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 02:39:51,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 02:39:51,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:39:51,133 INFO L256 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-07 02:39:51,145 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 02:39:51,189 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 02:39:51,190 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 02:39:51,265 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 02:39:51,265 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 02:39:51,266 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2019-10-07 02:39:51,266 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 02:39:51,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 02:39:51,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-07 02:39:51,267 INFO L87 Difference]: Start difference. First operand 6931 states and 11299 transitions. Second operand 5 states. [2019-10-07 02:39:58,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 02:39:58,253 INFO L93 Difference]: Finished difference Result 20367 states and 34407 transitions. [2019-10-07 02:39:58,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 02:39:58,254 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2019-10-07 02:39:58,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 02:39:58,330 INFO L225 Difference]: With dead ends: 20367 [2019-10-07 02:39:58,331 INFO L226 Difference]: Without dead ends: 13441 [2019-10-07 02:39:58,352 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 132 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2019-10-07 02:39:58,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13441 states. [2019-10-07 02:39:58,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13441 to 13241. [2019-10-07 02:39:58,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13241 states. [2019-10-07 02:39:58,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13241 states to 13241 states and 20223 transitions. [2019-10-07 02:39:58,701 INFO L78 Accepts]: Start accepts. Automaton has 13241 states and 20223 transitions. Word has length 68 [2019-10-07 02:39:58,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 02:39:58,703 INFO L462 AbstractCegarLoop]: Abstraction has 13241 states and 20223 transitions. [2019-10-07 02:39:58,703 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 02:39:58,704 INFO L276 IsEmpty]: Start isEmpty. Operand 13241 states and 20223 transitions. [2019-10-07 02:39:58,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2019-10-07 02:39:58,713 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 02:39:58,714 INFO L385 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 02:39:58,919 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 02:39:58,920 INFO L410 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 02:39:58,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 02:39:58,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1957696595, now seen corresponding path program 1 times [2019-10-07 02:39:58,921 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 02:39:58,921 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:39:58,922 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:39:58,922 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:39:58,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 02:39:58,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:39:59,021 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 22 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 02:39:59,022 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:39:59,022 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 02:39:59,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 02:39:59,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:39:59,116 INFO L256 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-07 02:39:59,126 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 02:39:59,163 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 02:39:59,163 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 02:39:59,236 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 22 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 02:39:59,237 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 02:39:59,237 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2019-10-07 02:39:59,239 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 02:39:59,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 02:39:59,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-10-07 02:39:59,240 INFO L87 Difference]: Start difference. First operand 13241 states and 20223 transitions. Second operand 5 states. [2019-10-07 02:40:07,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 02:40:07,224 INFO L93 Difference]: Finished difference Result 39183 states and 63361 transitions. [2019-10-07 02:40:07,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 02:40:07,224 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2019-10-07 02:40:07,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 02:40:07,335 INFO L225 Difference]: With dead ends: 39183 [2019-10-07 02:40:07,335 INFO L226 Difference]: Without dead ends: 25947 [2019-10-07 02:40:07,381 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2019-10-07 02:40:07,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25947 states. [2019-10-07 02:40:07,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25947 to 21828. [2019-10-07 02:40:07,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21828 states. [2019-10-07 02:40:07,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21828 states to 21828 states and 33138 transitions. [2019-10-07 02:40:07,978 INFO L78 Accepts]: Start accepts. Automaton has 21828 states and 33138 transitions. Word has length 72 [2019-10-07 02:40:07,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 02:40:07,979 INFO L462 AbstractCegarLoop]: Abstraction has 21828 states and 33138 transitions. [2019-10-07 02:40:07,979 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 02:40:07,980 INFO L276 IsEmpty]: Start isEmpty. Operand 21828 states and 33138 transitions. [2019-10-07 02:40:07,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-10-07 02:40:07,982 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 02:40:07,982 INFO L385 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-10-07 02:40:08,186 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 02:40:08,187 INFO L410 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 02:40:08,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 02:40:08,187 INFO L82 PathProgramCache]: Analyzing trace with hash 777322561, now seen corresponding path program 1 times [2019-10-07 02:40:08,187 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 02:40:08,188 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:40:08,188 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:40:08,188 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 02:40:08,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 02:40:08,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:40:08,373 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 33 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 02:40:08,373 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 02:40:08,373 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 02:40:08,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 02:40:08,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 02:40:08,482 INFO L256 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 02:40:08,486 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 02:40:08,532 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 02:40:08,532 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 02:40:08,612 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 33 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 02:40:08,613 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 02:40:08,651 INFO L162 IcfgInterpreter]: Started Sifa with 72 locations of interest [2019-10-07 02:40:08,652 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 02:40:08,658 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 02:40:08,678 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 02:40:08,679 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 02:40:08,843 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 57 for LOIs [2019-10-07 02:40:09,022 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-10-07 02:40:09,043 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2019-10-07 02:40:09,066 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 55 [2019-10-07 02:40:09,365 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 55 [2019-10-07 02:40:09,954 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 02:40:09,955 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:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:436) 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:99) 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:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:287) ... 21 more [2019-10-07 02:40:09,962 INFO L168 Benchmark]: Toolchain (without parser) took 56153.24 ms. Allocated memory was 137.4 MB in the beginning and 945.3 MB in the end (delta: 807.9 MB). Free memory was 88.6 MB in the beginning and 746.8 MB in the end (delta: -658.1 MB). Peak memory consumption was 149.8 MB. Max. memory is 7.1 GB. [2019-10-07 02:40:09,963 INFO L168 Benchmark]: CDTParser took 1.34 ms. Allocated memory is still 137.4 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 02:40:09,965 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2494.87 ms. Allocated memory was 137.4 MB in the beginning and 262.7 MB in the end (delta: 125.3 MB). Free memory was 88.4 MB in the beginning and 183.8 MB in the end (delta: -95.4 MB). Peak memory consumption was 119.3 MB. Max. memory is 7.1 GB. [2019-10-07 02:40:09,965 INFO L168 Benchmark]: Boogie Preprocessor took 306.54 ms. Allocated memory is still 262.7 MB. Free memory was 183.8 MB in the beginning and 155.4 MB in the end (delta: 28.4 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. [2019-10-07 02:40:09,967 INFO L168 Benchmark]: RCFGBuilder took 6985.71 ms. Allocated memory was 262.7 MB in the beginning and 411.6 MB in the end (delta: 148.9 MB). Free memory was 155.4 MB in the beginning and 308.6 MB in the end (delta: -153.2 MB). Peak memory consumption was 252.1 MB. Max. memory is 7.1 GB. [2019-10-07 02:40:09,968 INFO L168 Benchmark]: TraceAbstraction took 46359.16 ms. Allocated memory was 411.6 MB in the beginning and 945.3 MB in the end (delta: 533.7 MB). Free memory was 308.6 MB in the beginning and 746.8 MB in the end (delta: -438.2 MB). Peak memory consumption was 95.6 MB. Max. memory is 7.1 GB. [2019-10-07 02:40:09,975 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.34 ms. Allocated memory is still 137.4 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2494.87 ms. Allocated memory was 137.4 MB in the beginning and 262.7 MB in the end (delta: 125.3 MB). Free memory was 88.4 MB in the beginning and 183.8 MB in the end (delta: -95.4 MB). Peak memory consumption was 119.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 306.54 ms. Allocated memory is still 262.7 MB. Free memory was 183.8 MB in the beginning and 155.4 MB in the end (delta: 28.4 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6985.71 ms. Allocated memory was 262.7 MB in the beginning and 411.6 MB in the end (delta: 148.9 MB). Free memory was 155.4 MB in the beginning and 308.6 MB in the end (delta: -153.2 MB). Peak memory consumption was 252.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 46359.16 ms. Allocated memory was 411.6 MB in the beginning and 945.3 MB in the end (delta: 533.7 MB). Free memory was 308.6 MB in the beginning and 746.8 MB in the end (delta: -438.2 MB). Peak memory consumption was 95.6 MB. 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:295) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...