java -Xss1g -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf -i /storage/chc-comp18-benchmarks/lra/chc-lra-0003.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-4413abc-m [2018-06-20 14:16:50,774 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-20 14:16:50,776 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-20 14:16:50,787 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-20 14:16:50,788 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-20 14:16:50,788 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-20 14:16:50,790 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-20 14:16:50,791 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-20 14:16:50,793 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-20 14:16:50,794 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-20 14:16:50,795 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-20 14:16:50,795 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-20 14:16:50,796 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-20 14:16:50,797 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-20 14:16:50,798 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-20 14:16:50,799 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-20 14:16:50,801 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-20 14:16:50,803 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-20 14:16:50,805 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-20 14:16:50,806 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-20 14:16:50,807 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-20 14:16:50,810 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-20 14:16:50,810 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-20 14:16:50,810 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-20 14:16:50,811 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-20 14:16:50,812 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-20 14:16:50,813 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-20 14:16:50,814 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-20 14:16:50,815 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-20 14:16:50,815 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-20 14:16:50,816 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-20 14:16:50,817 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-20 14:16:50,817 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-20 14:16:50,818 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-20 14:16:50,819 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-20 14:16:50,819 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf [2018-06-20 14:16:50,832 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-20 14:16:50,833 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-20 14:16:50,833 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-20 14:16:50,833 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-20 14:16:50,834 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-20 14:16:50,834 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-20 14:16:50,835 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-20 14:16:50,835 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-20 14:16:50,835 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-20 14:16:50,835 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-20 14:16:50,836 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-20 14:16:50,836 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-20 14:16:50,836 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-20 14:16:50,836 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-20 14:16:50,837 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-20 14:16:50,837 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-20 14:16:50,837 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-20 14:16:50,837 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-20 14:16:50,838 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-20 14:16:50,839 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-20 14:16:50,839 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-20 14:16:50,875 INFO ]: Repository-Root is: /tmp [2018-06-20 14:16:50,891 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-20 14:16:50,897 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-20 14:16:50,898 INFO ]: Initializing SmtParser... [2018-06-20 14:16:50,898 INFO ]: SmtParser initialized [2018-06-20 14:16:50,900 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp18-benchmarks/lra/chc-lra-0003.smt2 [2018-06-20 14:16:50,901 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-20 14:16:50,994 INFO ]: Executing SMT file /storage/chc-comp18-benchmarks/lra/chc-lra-0003.smt2 unknown [2018-06-20 14:16:51,204 INFO ]: Succesfully executed SMT file /storage/chc-comp18-benchmarks/lra/chc-lra-0003.smt2 [2018-06-20 14:16:51,209 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-20 14:16:51,217 INFO ]: Walking toolchain with 4 elements. [2018-06-20 14:16:51,217 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-20 14:16:51,220 INFO ]: Initializing ChcToBoogie... [2018-06-20 14:16:51,220 INFO ]: ChcToBoogie initialized [2018-06-20 14:16:51,223 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 20.06 02:16:51" (1/1) ... [2018-06-20 14:16:51,297 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 02:16:51 Unit [2018-06-20 14:16:51,297 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-20 14:16:51,298 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-20 14:16:51,298 INFO ]: Initializing Boogie Preprocessor... [2018-06-20 14:16:51,298 INFO ]: Boogie Preprocessor initialized [2018-06-20 14:16:51,317 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 02:16:51" (1/1) ... [2018-06-20 14:16:51,317 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 02:16:51" (1/1) ... [2018-06-20 14:16:51,331 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 02:16:51" (1/1) ... [2018-06-20 14:16:51,332 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 02:16:51" (1/1) ... [2018-06-20 14:16:51,347 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 02:16:51" (1/1) ... [2018-06-20 14:16:51,349 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 02:16:51" (1/1) ... [2018-06-20 14:16:51,350 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 02:16:51" (1/1) ... [2018-06-20 14:16:51,351 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-20 14:16:51,352 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-20 14:16:51,352 INFO ]: Initializing RCFGBuilder... [2018-06-20 14:16:51,352 INFO ]: RCFGBuilder initialized [2018-06-20 14:16:51,353 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 02:16:51" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-20 14:16:51,376 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-20 14:16:51,376 INFO ]: Found specification of procedure False [2018-06-20 14:16:51,376 INFO ]: Found implementation of procedure False [2018-06-20 14:16:51,376 INFO ]: Specification and implementation of procedure invariant given in one single declaration [2018-06-20 14:16:51,377 INFO ]: Found specification of procedure invariant [2018-06-20 14:16:51,377 INFO ]: Found implementation of procedure invariant [2018-06-20 14:16:51,377 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-20 14:16:51,377 INFO ]: Found specification of procedure Ultimate.START [2018-06-20 14:16:51,377 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-20 14:16:51,579 INFO ]: Using library mode [2018-06-20 14:16:51,580 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 02:16:51 BoogieIcfgContainer [2018-06-20 14:16:51,580 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-20 14:16:51,581 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-20 14:16:51,581 INFO ]: Initializing TraceAbstraction... [2018-06-20 14:16:51,586 INFO ]: TraceAbstraction initialized [2018-06-20 14:16:51,586 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 20.06 02:16:51" (1/3) ... [2018-06-20 14:16:51,587 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31236cfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 20.06 02:16:51, skipping insertion in model container [2018-06-20 14:16:51,588 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 02:16:51" (2/3) ... [2018-06-20 14:16:51,588 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31236cfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.06 02:16:51, skipping insertion in model container [2018-06-20 14:16:51,588 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 02:16:51" (3/3) ... [2018-06-20 14:16:51,592 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-20 14:16:51,609 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-20 14:16:51,626 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-20 14:16:51,677 INFO ]: Using default assertion order modulation [2018-06-20 14:16:51,678 INFO ]: Interprodecural is true [2018-06-20 14:16:51,678 INFO ]: Hoare is false [2018-06-20 14:16:51,678 INFO ]: Compute interpolants for FPandBP [2018-06-20 14:16:51,678 INFO ]: Backedges is TWOTRACK [2018-06-20 14:16:51,678 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-20 14:16:51,678 INFO ]: Difference is false [2018-06-20 14:16:51,678 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-20 14:16:51,678 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-20 14:16:51,691 INFO ]: Start isEmpty. Operand 13 states. [2018-06-20 14:16:51,710 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-20 14:16:51,710 INFO ]: Found error trace [2018-06-20 14:16:51,711 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-20 14:16:51,711 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-20 14:16:51,722 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-20 14:16:51,723 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-20 14:16:51,724 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-20 14:16:51,793 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-20 14:16:51,793 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-20 14:16:51,793 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-20 14:16:51,842 INFO ]: Conjunction of SSA is unsat [2018-06-20 14:16:52,011 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-20 14:16:52,013 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-20 14:16:52,014 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-20 14:16:52,015 INFO ]: Interpolant automaton has 4 states [2018-06-20 14:16:52,028 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-20 14:16:52,029 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-20 14:16:52,030 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-20 14:16:52,103 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-20 14:16:52,103 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-20 14:16:52,104 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-20 14:16:52,105 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-20 14:16:52,106 INFO ]: Finished accepts. some prefix is accepted. [2018-06-20 14:16:52,126 INFO ]: With dead ends: 13 [2018-06-20 14:16:52,127 INFO ]: Without dead ends: 13 [2018-06-20 14:16:52,133 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-20 14:16:52,152 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-20 14:16:52,185 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-20 14:16:52,186 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-20 14:16:52,187 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-20 14:16:52,188 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-20 14:16:52,188 INFO ]: Finished accepts. word is rejected. [2018-06-20 14:16:52,188 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-20 14:16:52,188 INFO ]: Interpolant automaton has 4 states. [2018-06-20 14:16:52,188 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-20 14:16:52,189 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-20 14:16:52,189 INFO ]: Found error trace [2018-06-20 14:16:52,190 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-20 14:16:52,190 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-20 14:16:52,190 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-20 14:16:52,190 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-20 14:16:52,190 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-20 14:16:52,190 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-20 14:16:52,191 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-20 14:16:52,191 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-20 14:16:52,302 INFO ]: Conjunction of SSA is unsat [2018-06-20 14:16:53,490 WARN ]: Spent 865.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 42 [2018-06-20 14:16:53,614 WARN ]: Spent 112.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 16 [2018-06-20 14:16:53,640 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-20 14:16:53,640 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-20 14:16:53,640 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-20 14:16:53,657 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-20 14:16:53,717 INFO ]: Conjunction of SSA is unsat [2018-06-20 14:16:53,728 INFO ]: Computing forward predicates... [2018-06-20 14:17:09,900 WARN ]: Spent 9.17 s on a formula simplification. DAG size of input: 680 DAG size of output: 106 [2018-06-20 14:17:10,085 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-20 14:17:10,108 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-20 14:17:10,108 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-20 14:17:10,108 INFO ]: Interpolant automaton has 9 states [2018-06-20 14:17:10,109 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-20 14:17:10,109 INFO ]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-06-20 14:17:10,109 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 9 states. [2018-06-20 14:17:10,677 WARN ]: Spent 529.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2018-06-20 14:17:11,001 WARN ]: Spent 274.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 45 [2018-06-20 14:17:11,039 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-20 14:17:11,040 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-20 14:17:11,041 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-20 14:17:11,041 INFO ]: Start accepts. Automaton has 9 states. Word has length 13 [2018-06-20 14:17:11,041 INFO ]: Finished accepts. some prefix is accepted. [2018-06-20 14:17:11,042 INFO ]: With dead ends: 15 [2018-06-20 14:17:11,042 INFO ]: Without dead ends: 15 [2018-06-20 14:17:11,042 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-06-20 14:17:11,042 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-20 14:17:11,045 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-20 14:17:11,045 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-20 14:17:11,046 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-20 14:17:11,046 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-20 14:17:11,046 INFO ]: Finished accepts. word is rejected. [2018-06-20 14:17:11,046 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-20 14:17:11,046 INFO ]: Interpolant automaton has 9 states. [2018-06-20 14:17:11,046 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-20 14:17:11,046 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-20 14:17:11,046 INFO ]: Found error trace [2018-06-20 14:17:11,047 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-20 14:17:11,047 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-20 14:17:11,047 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-20 14:17:11,047 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-20 14:17:11,047 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-20 14:17:11,048 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-20 14:17:11,048 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-20 14:17:11,048 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-20 14:17:11,254 INFO ]: Conjunction of SSA is unsat [2018-06-20 14:17:12,072 WARN ]: Spent 451.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 8 [2018-06-20 14:17:12,497 WARN ]: Spent 366.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 53 [2018-06-20 14:17:13,452 WARN ]: Spent 887.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 84 [2018-06-20 14:17:13,660 WARN ]: Spent 143.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 30 [2018-06-20 14:17:13,692 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-20 14:17:13,692 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-20 14:17:13,692 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-20 14:17:13,704 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-20 14:17:13,757 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-20 14:17:13,757 INFO ]: Conjunction of SSA is unsat [2018-06-20 14:17:13,761 INFO ]: Computing forward predicates... [2018-06-20 14:17:41,520 WARN ]: Spent 21.89 s on a formula simplification. DAG size of input: 981 DAG size of output: 158 Received shutdown request... [2018-06-20 14:17:53,476 WARN ]: Removed 291 from assertion stack [2018-06-20 14:17:53,476 INFO ]: Timeout while computing interpolants [2018-06-20 14:17:53,676 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-20 14:17:53,676 WARN ]: Verification canceled [2018-06-20 14:17:53,680 WARN ]: Timeout [2018-06-20 14:17:53,680 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.06 02:17:53 BoogieIcfgContainer [2018-06-20 14:17:53,680 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-20 14:17:53,681 INFO ]: Toolchain (without parser) took 62471.89 ms. Allocated memory was 306.7 MB in the beginning and 1.5 GB in the end (delta: 1.1 GB). Free memory was 259.1 MB in the beginning and 372.9 MB in the end (delta: -113.8 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-06-20 14:17:53,682 INFO ]: SmtParser took 0.09 ms. Allocated memory is still 306.7 MB. Free memory is still 271.2 MB. There was no memory consumed. Max. memory is 7.1 GB. [2018-06-20 14:17:53,682 INFO ]: ChcToBoogie took 80.33 ms. Allocated memory is still 306.7 MB. Free memory was 259.1 MB in the beginning and 257.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2018-06-20 14:17:53,686 INFO ]: Boogie Preprocessor took 53.62 ms. Allocated memory is still 306.7 MB. Free memory was 257.1 MB in the beginning and 255.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2018-06-20 14:17:53,686 INFO ]: RCFGBuilder took 227.70 ms. Allocated memory is still 306.7 MB. Free memory was 255.1 MB in the beginning and 245.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2018-06-20 14:17:53,687 INFO ]: TraceAbstraction took 62099.04 ms. Allocated memory was 306.7 MB in the beginning and 1.5 GB in the end (delta: 1.1 GB). Free memory was 245.1 MB in the beginning and 372.9 MB in the end (delta: -127.8 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-06-20 14:17:53,690 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.09 ms. Allocated memory is still 306.7 MB. Free memory is still 271.2 MB. There was no memory consumed. Max. memory is 7.1 GB. * ChcToBoogie took 80.33 ms. Allocated memory is still 306.7 MB. Free memory was 259.1 MB in the beginning and 257.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 53.62 ms. Allocated memory is still 306.7 MB. Free memory was 257.1 MB in the beginning and 255.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 227.70 ms. Allocated memory is still 306.7 MB. Free memory was 255.1 MB in the beginning and 245.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 62099.04 ms. Allocated memory was 306.7 MB in the beginning and 1.5 GB in the end (delta: 1.1 GB). Free memory was 245.1 MB in the beginning and 372.9 MB in the end (delta: -127.8 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 3, while TraceCheckSpWp was constructing forward predicates, while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 867. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 62.0s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 1.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 22 SDtfs, 7 SDslu, 42 SDs, 0 SdLazy, 28 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 11.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 17.8s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 10392 SizeOfPredicates, 33 NumberOfNonLiveVariables, 136 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 2/6 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/chc-lra-0003.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-20_14-17-53-703.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/chc-lra-0003.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-20_14-17-53-703.csv Completed graceful shutdown