java -Xss1g -Xmx4000000000 -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_Goto.epf -i /storage/chc-comp/hopv/lia/mochi/hors.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 01:47:42,578 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 01:47:42,580 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 01:47:42,594 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 01:47:42,595 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 01:47:42,596 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 01:47:42,597 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 01:47:42,599 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 01:47:42,601 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 01:47:42,602 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 01:47:42,603 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 01:47:42,603 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 01:47:42,606 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 01:47:42,609 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 01:47:42,610 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 01:47:42,611 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 01:47:42,622 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 01:47:42,624 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 01:47:42,626 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 01:47:42,626 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 01:47:42,628 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 01:47:42,630 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-06-22 01:47:42,635 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 01:47:42,635 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 01:47:42,636 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 01:47:42,636 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 01:47:42,638 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 01:47:42,639 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 01:47:42,639 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 01:47:42,652 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 01:47:42,652 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 01:47:42,653 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 01:47:42,653 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 01:47:42,654 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 01:47:42,654 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 01:47:42,654 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 01:47:42,654 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 01:47:42,655 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 01:47:42,655 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 01:47:42,655 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 01:47:42,655 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 01:47:42,655 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 01:47:42,656 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 01:47:42,656 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 01:47:42,656 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 01:47:42,656 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 01:47:42,657 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 01:47:42,657 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 01:47:42,703 INFO ]: Repository-Root is: /tmp [2018-06-22 01:47:42,717 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 01:47:42,720 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 01:47:42,722 INFO ]: Initializing SmtParser... [2018-06-22 01:47:42,722 INFO ]: SmtParser initialized [2018-06-22 01:47:42,722 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/hors.smt2 [2018-06-22 01:47:42,724 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 [2018-06-22 01:47:42,808 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/hors.smt2 unknown [2018-06-22 01:47:43,097 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/hors.smt2 [2018-06-22 01:47:43,103 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 01:47:43,110 INFO ]: Walking toolchain with 4 elements. [2018-06-22 01:47:43,111 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 01:47:43,111 INFO ]: Initializing ChcToBoogie... [2018-06-22 01:47:43,111 INFO ]: ChcToBoogie initialized [2018-06-22 01:47:43,116 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:47:43" (1/1) ... [2018-06-22 01:47:43,176 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:47:43 Unit [2018-06-22 01:47:43,176 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 01:47:43,177 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 01:47:43,177 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 01:47:43,177 INFO ]: Boogie Preprocessor initialized [2018-06-22 01:47:43,203 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:47:43" (1/1) ... [2018-06-22 01:47:43,203 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:47:43" (1/1) ... [2018-06-22 01:47:43,210 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:47:43" (1/1) ... [2018-06-22 01:47:43,210 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:47:43" (1/1) ... [2018-06-22 01:47:43,216 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:47:43" (1/1) ... [2018-06-22 01:47:43,226 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:47:43" (1/1) ... [2018-06-22 01:47:43,227 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:47:43" (1/1) ... [2018-06-22 01:47:43,229 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 01:47:43,229 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 01:47:43,229 INFO ]: Initializing RCFGBuilder... [2018-06-22 01:47:43,229 INFO ]: RCFGBuilder initialized [2018-06-22 01:47:43,234 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:47:43" (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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 01:47:43,243 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 01:47:43,243 INFO ]: Found specification of procedure gotoProc [2018-06-22 01:47:43,243 INFO ]: Found implementation of procedure gotoProc [2018-06-22 01:47:43,243 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 01:47:43,243 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 01:47:43,243 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 01:47:43,614 INFO ]: Using library mode [2018-06-22 01:47:43,615 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:47:43 BoogieIcfgContainer [2018-06-22 01:47:43,615 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 01:47:43,617 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 01:47:43,617 INFO ]: Initializing TraceAbstraction... [2018-06-22 01:47:43,620 INFO ]: TraceAbstraction initialized [2018-06-22 01:47:43,620 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:47:43" (1/3) ... [2018-06-22 01:47:43,622 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e624e81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 01:47:43, skipping insertion in model container [2018-06-22 01:47:43,622 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:47:43" (2/3) ... [2018-06-22 01:47:43,622 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e624e81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 01:47:43, skipping insertion in model container [2018-06-22 01:47:43,622 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:47:43" (3/3) ... [2018-06-22 01:47:43,623 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 01:47:43,630 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 01:47:43,636 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 01:47:43,671 INFO ]: Using default assertion order modulation [2018-06-22 01:47:43,672 INFO ]: Interprodecural is true [2018-06-22 01:47:43,672 INFO ]: Hoare is false [2018-06-22 01:47:43,672 INFO ]: Compute interpolants for FPandBP [2018-06-22 01:47:43,672 INFO ]: Backedges is TWOTRACK [2018-06-22 01:47:43,672 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 01:47:43,672 INFO ]: Difference is false [2018-06-22 01:47:43,672 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 01:47:43,672 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 01:47:43,687 INFO ]: Start isEmpty. Operand 34 states. [2018-06-22 01:47:43,697 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 01:47:43,697 INFO ]: Found error trace [2018-06-22 01:47:43,698 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:47:43,698 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:47:43,703 INFO ]: Analyzing trace with hash 142754160, now seen corresponding path program 1 times [2018-06-22 01:47:43,704 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:47:43,704 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:47:43,740 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:47:43,740 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:47:43,740 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:47:43,766 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:47:43,825 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:47:43,826 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:47:43,827 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 01:47:43,828 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:47:43,838 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:47:43,839 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:47:43,842 INFO ]: Start difference. First operand 34 states. Second operand 4 states. [2018-06-22 01:47:44,624 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:47:44,624 INFO ]: Finished difference Result 56 states and 77 transitions. [2018-06-22 01:47:44,625 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 01:47:44,626 INFO ]: Start accepts. Automaton has 4 states. Word has length 8 [2018-06-22 01:47:44,626 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:47:44,637 INFO ]: With dead ends: 56 [2018-06-22 01:47:44,637 INFO ]: Without dead ends: 56 [2018-06-22 01:47:44,641 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 01:47:44,659 INFO ]: Start minimizeSevpa. Operand 56 states. [2018-06-22 01:47:44,690 INFO ]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-06-22 01:47:44,694 INFO ]: Start removeUnreachable. Operand 56 states. [2018-06-22 01:47:44,700 INFO ]: Finished removeUnreachable. Reduced from 56 states to 56 states and 77 transitions. [2018-06-22 01:47:44,701 INFO ]: Start accepts. Automaton has 56 states and 77 transitions. Word has length 8 [2018-06-22 01:47:44,701 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:47:44,701 INFO ]: Abstraction has 56 states and 77 transitions. [2018-06-22 01:47:44,701 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:47:44,701 INFO ]: Start isEmpty. Operand 56 states and 77 transitions. [2018-06-22 01:47:44,707 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-22 01:47:44,707 INFO ]: Found error trace [2018-06-22 01:47:44,707 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:47:44,707 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:47:44,708 INFO ]: Analyzing trace with hash 1928250886, now seen corresponding path program 1 times [2018-06-22 01:47:44,708 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:47:44,708 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:47:44,709 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:47:44,709 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:47:44,709 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:47:44,717 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:47:44,752 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:47:44,752 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:47:44,752 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 01:47:44,753 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:47:44,754 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:47:44,754 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:47:44,754 INFO ]: Start difference. First operand 56 states and 77 transitions. Second operand 4 states. [2018-06-22 01:47:44,994 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:47:44,994 INFO ]: Finished difference Result 72 states and 99 transitions. [2018-06-22 01:47:44,994 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 01:47:44,994 INFO ]: Start accepts. Automaton has 4 states. Word has length 11 [2018-06-22 01:47:44,994 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:47:44,999 INFO ]: With dead ends: 72 [2018-06-22 01:47:44,999 INFO ]: Without dead ends: 72 [2018-06-22 01:47:45,000 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 01:47:45,000 INFO ]: Start minimizeSevpa. Operand 72 states. [2018-06-22 01:47:45,011 INFO ]: Finished minimizeSevpa. Reduced states from 72 to 72. [2018-06-22 01:47:45,011 INFO ]: Start removeUnreachable. Operand 72 states. [2018-06-22 01:47:45,014 INFO ]: Finished removeUnreachable. Reduced from 72 states to 72 states and 99 transitions. [2018-06-22 01:47:45,014 INFO ]: Start accepts. Automaton has 72 states and 99 transitions. Word has length 11 [2018-06-22 01:47:45,014 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:47:45,015 INFO ]: Abstraction has 72 states and 99 transitions. [2018-06-22 01:47:45,015 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:47:45,015 INFO ]: Start isEmpty. Operand 72 states and 99 transitions. [2018-06-22 01:47:45,016 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 01:47:45,016 INFO ]: Found error trace [2018-06-22 01:47:45,016 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:47:45,016 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:47:45,016 INFO ]: Analyzing trace with hash 2139050811, now seen corresponding path program 1 times [2018-06-22 01:47:45,017 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:47:45,017 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:47:45,017 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:47:45,017 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:47:45,017 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:47:45,034 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:47:45,282 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:47:45,282 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:47:45,282 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-06-22 01:47:45,282 INFO ]: Interpolant automaton has 5 states [2018-06-22 01:47:45,282 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 01:47:45,282 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-22 01:47:45,283 INFO ]: Start difference. First operand 72 states and 99 transitions. Second operand 5 states. [2018-06-22 01:47:45,480 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:47:45,481 INFO ]: Finished difference Result 99 states and 132 transitions. [2018-06-22 01:47:45,481 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 01:47:45,481 INFO ]: Start accepts. Automaton has 5 states. Word has length 13 [2018-06-22 01:47:45,481 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:47:45,484 INFO ]: With dead ends: 99 [2018-06-22 01:47:45,484 INFO ]: Without dead ends: 96 [2018-06-22 01:47:45,484 INFO ]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-06-22 01:47:45,484 INFO ]: Start minimizeSevpa. Operand 96 states. [2018-06-22 01:47:45,496 INFO ]: Finished minimizeSevpa. Reduced states from 96 to 78. [2018-06-22 01:47:45,496 INFO ]: Start removeUnreachable. Operand 78 states. [2018-06-22 01:47:45,499 INFO ]: Finished removeUnreachable. Reduced from 78 states to 78 states and 105 transitions. [2018-06-22 01:47:45,499 INFO ]: Start accepts. Automaton has 78 states and 105 transitions. Word has length 13 [2018-06-22 01:47:45,499 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:47:45,500 INFO ]: Abstraction has 78 states and 105 transitions. [2018-06-22 01:47:45,500 INFO ]: Interpolant automaton has 5 states. [2018-06-22 01:47:45,500 INFO ]: Start isEmpty. Operand 78 states and 105 transitions. [2018-06-22 01:47:45,505 INFO ]: Finished isEmpty. Found accepting run of length 39 [2018-06-22 01:47:45,505 INFO ]: Found error trace [2018-06-22 01:47:45,505 INFO ]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:47:45,506 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:47:45,506 INFO ]: Analyzing trace with hash -1363474191, now seen corresponding path program 1 times [2018-06-22 01:47:45,506 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:47:45,506 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:47:45,507 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:47:45,507 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:47:45,507 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:47:45,522 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:47:45,599 INFO ]: Checked inductivity of 31 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-06-22 01:47:45,599 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:47:45,599 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 [2018-06-22 01:47:45,608 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:47:45,649 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:47:45,659 INFO ]: Computing forward predicates... [2018-06-22 01:47:45,960 INFO ]: Checked inductivity of 31 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-06-22 01:47:45,991 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-22 01:47:45,991 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2018-06-22 01:47:45,992 INFO ]: Interpolant automaton has 7 states [2018-06-22 01:47:45,992 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 01:47:45,992 INFO ]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-06-22 01:47:45,992 INFO ]: Start difference. First operand 78 states and 105 transitions. Second operand 7 states. [2018-06-22 01:47:46,764 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:47:46,764 INFO ]: Finished difference Result 124 states and 165 transitions. [2018-06-22 01:47:46,766 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-22 01:47:46,766 INFO ]: Start accepts. Automaton has 7 states. Word has length 38 [2018-06-22 01:47:46,766 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:47:46,766 INFO ]: With dead ends: 124 [2018-06-22 01:47:46,766 INFO ]: Without dead ends: 0 [2018-06-22 01:47:46,767 INFO ]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2018-06-22 01:47:46,767 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 01:47:46,767 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 01:47:46,767 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 01:47:46,767 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 01:47:46,767 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2018-06-22 01:47:46,767 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:47:46,767 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 01:47:46,767 INFO ]: Interpolant automaton has 7 states. [2018-06-22 01:47:46,767 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 01:47:46,767 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 01:47:46,772 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 01:47:46 BoogieIcfgContainer [2018-06-22 01:47:46,772 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 01:47:46,773 INFO ]: Toolchain (without parser) took 3669.17 ms. Allocated memory was 306.7 MB in the beginning and 325.1 MB in the end (delta: 18.4 MB). Free memory was 259.1 MB in the beginning and 238.2 MB in the end (delta: 20.9 MB). Peak memory consumption was 39.2 MB. Max. memory is 3.6 GB. [2018-06-22 01:47:46,774 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 306.7 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 01:47:46,775 INFO ]: ChcToBoogie took 65.98 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 3.6 GB. [2018-06-22 01:47:46,775 INFO ]: Boogie Preprocessor took 51.70 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 3.6 GB. [2018-06-22 01:47:46,776 INFO ]: RCFGBuilder took 385.85 ms. Allocated memory is still 306.7 MB. Free memory was 255.1 MB in the beginning and 243.1 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:47:46,776 INFO ]: TraceAbstraction took 3154.58 ms. Allocated memory was 306.7 MB in the beginning and 325.1 MB in the end (delta: 18.4 MB). Free memory was 243.1 MB in the beginning and 238.2 MB in the end (delta: 4.9 MB). Peak memory consumption was 23.3 MB. Max. memory is 3.6 GB. [2018-06-22 01:47:46,780 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 306.7 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 65.98 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 3.6 GB. * Boogie Preprocessor took 51.70 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 3.6 GB. * RCFGBuilder took 385.85 ms. Allocated memory is still 306.7 MB. Free memory was 255.1 MB in the beginning and 243.1 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 3154.58 ms. Allocated memory was 306.7 MB in the beginning and 325.1 MB in the end (delta: 18.4 MB). Free memory was 243.1 MB in the beginning and 238.2 MB in the end (delta: 4.9 MB). Peak memory consumption was 23.3 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 34 locations, 1 error locations. SAFE Result, 3.1s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 2.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 143 SDtfs, 204 SDslu, 219 SDs, 0 SdLazy, 267 SolverSat, 80 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=78occurred in iteration=3, 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, 4 MinimizatonAttempts, 18 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 103 ConstructedInterpolants, 0 QuantifiedInterpolants, 4516 SizeOfPredicates, 1 NumberOfNonLiveVariables, 123 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 60/62 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/hors.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_01-47-46-792.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/hors.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_01-47-46-792.csv Received shutdown request...