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/a-dotprod.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 01:38:45,605 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 01:38:45,607 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 01:38:45,618 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 01:38:45,619 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 01:38:45,619 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 01:38:45,621 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 01:38:45,622 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 01:38:45,624 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 01:38:45,625 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 01:38:45,625 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-06-22 01:38:45,645 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 01:38:45,645 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 01:38:45,646 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 01:38:45,647 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 01:38:45,648 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 01:38:45,648 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 01:38:45,649 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 01:38:45,662 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 01:38:45,662 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 01:38:45,663 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 01:38:45,663 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 01:38:45,664 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 01:38:45,664 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 01:38:45,665 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 01:38:45,665 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 01:38:45,665 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 01:38:45,665 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 01:38:45,666 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 01:38:45,666 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 01:38:45,666 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 01:38:45,666 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 01:38:45,667 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 01:38:45,667 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 01:38:45,667 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 01:38:45,669 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 01:38:45,669 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 01:38:45,712 INFO ]: Repository-Root is: /tmp [2018-06-22 01:38:45,727 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 01:38:45,729 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 01:38:45,730 INFO ]: Initializing SmtParser... [2018-06-22 01:38:45,731 INFO ]: SmtParser initialized [2018-06-22 01:38:45,731 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/a-dotprod.smt2 [2018-06-22 01:38:45,732 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 01:38:45,823 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/a-dotprod.smt2 unknown [2018-06-22 01:38:46,070 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/a-dotprod.smt2 [2018-06-22 01:38:46,075 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 01:38:46,080 INFO ]: Walking toolchain with 4 elements. [2018-06-22 01:38:46,080 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 01:38:46,080 INFO ]: Initializing ChcToBoogie... [2018-06-22 01:38:46,081 INFO ]: ChcToBoogie initialized [2018-06-22 01:38:46,084 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:38:46" (1/1) ... [2018-06-22 01:38:46,144 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:38:46 Unit [2018-06-22 01:38:46,144 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 01:38:46,145 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 01:38:46,145 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 01:38:46,145 INFO ]: Boogie Preprocessor initialized [2018-06-22 01:38:46,166 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:38:46" (1/1) ... [2018-06-22 01:38:46,166 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:38:46" (1/1) ... [2018-06-22 01:38:46,172 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:38:46" (1/1) ... [2018-06-22 01:38:46,173 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:38:46" (1/1) ... [2018-06-22 01:38:46,182 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:38:46" (1/1) ... [2018-06-22 01:38:46,192 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:38:46" (1/1) ... [2018-06-22 01:38:46,193 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:38:46" (1/1) ... [2018-06-22 01:38:46,200 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 01:38:46,201 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 01:38:46,201 INFO ]: Initializing RCFGBuilder... [2018-06-22 01:38:46,201 INFO ]: RCFGBuilder initialized [2018-06-22 01:38:46,202 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:38:46" (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) [2018-06-22 01:38:46,219 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 01:38:46,219 INFO ]: Found specification of procedure gotoProc [2018-06-22 01:38:46,219 INFO ]: Found implementation of procedure gotoProc [2018-06-22 01:38:46,219 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 01:38:46,219 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 01:38:46,219 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 [2018-06-22 01:38:46,564 INFO ]: Using library mode [2018-06-22 01:38:46,565 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:38:46 BoogieIcfgContainer [2018-06-22 01:38:46,565 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 01:38:46,566 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 01:38:46,567 INFO ]: Initializing TraceAbstraction... [2018-06-22 01:38:46,570 INFO ]: TraceAbstraction initialized [2018-06-22 01:38:46,570 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:38:46" (1/3) ... [2018-06-22 01:38:46,571 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e2bd5b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 01:38:46, skipping insertion in model container [2018-06-22 01:38:46,571 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:38:46" (2/3) ... [2018-06-22 01:38:46,571 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e2bd5b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 01:38:46, skipping insertion in model container [2018-06-22 01:38:46,571 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:38:46" (3/3) ... [2018-06-22 01:38:46,573 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 01:38:46,583 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 01:38:46,591 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 01:38:46,629 INFO ]: Using default assertion order modulation [2018-06-22 01:38:46,630 INFO ]: Interprodecural is true [2018-06-22 01:38:46,630 INFO ]: Hoare is false [2018-06-22 01:38:46,630 INFO ]: Compute interpolants for FPandBP [2018-06-22 01:38:46,630 INFO ]: Backedges is TWOTRACK [2018-06-22 01:38:46,630 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 01:38:46,630 INFO ]: Difference is false [2018-06-22 01:38:46,630 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 01:38:46,630 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 01:38:46,644 INFO ]: Start isEmpty. Operand 29 states. [2018-06-22 01:38:46,659 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 01:38:46,659 INFO ]: Found error trace [2018-06-22 01:38:46,660 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:38:46,660 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:38:46,665 INFO ]: Analyzing trace with hash 1670779661, now seen corresponding path program 1 times [2018-06-22 01:38:46,667 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:38:46,667 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:38:46,699 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:38:46,699 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:38:46,699 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:38:46,725 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:38:46,752 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:38:46,754 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:38:46,754 INFO ]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-06-22 01:38:46,756 INFO ]: Interpolant automaton has 2 states [2018-06-22 01:38:46,769 INFO ]: Constructing interpolant automaton starting with 2 interpolants. [2018-06-22 01:38:46,770 INFO ]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 01:38:46,773 INFO ]: Start difference. First operand 29 states. Second operand 2 states. [2018-06-22 01:38:46,793 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:38:46,793 INFO ]: Finished difference Result 27 states and 37 transitions. [2018-06-22 01:38:46,793 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-06-22 01:38:46,796 INFO ]: Start accepts. Automaton has 2 states. Word has length 10 [2018-06-22 01:38:46,796 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:38:46,806 INFO ]: With dead ends: 27 [2018-06-22 01:38:46,806 INFO ]: Without dead ends: 27 [2018-06-22 01:38:46,810 INFO ]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 01:38:46,825 INFO ]: Start minimizeSevpa. Operand 27 states. [2018-06-22 01:38:46,843 INFO ]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-06-22 01:38:46,844 INFO ]: Start removeUnreachable. Operand 27 states. [2018-06-22 01:38:46,846 INFO ]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2018-06-22 01:38:46,847 INFO ]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 10 [2018-06-22 01:38:46,847 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:38:46,848 INFO ]: Abstraction has 27 states and 37 transitions. [2018-06-22 01:38:46,848 INFO ]: Interpolant automaton has 2 states. [2018-06-22 01:38:46,848 INFO ]: Start isEmpty. Operand 27 states and 37 transitions. [2018-06-22 01:38:46,849 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-22 01:38:46,849 INFO ]: Found error trace [2018-06-22 01:38:46,849 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:38:46,850 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:38:46,850 INFO ]: Analyzing trace with hash 2043465665, now seen corresponding path program 1 times [2018-06-22 01:38:46,850 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:38:46,850 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:38:46,851 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:38:46,851 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:38:46,851 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:38:46,860 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:38:46,923 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:38:46,924 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:38:46,924 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 01:38:46,925 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:38:46,925 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:38:46,925 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:38:46,925 INFO ]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2018-06-22 01:38:47,350 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:38:47,350 INFO ]: Finished difference Result 48 states and 67 transitions. [2018-06-22 01:38:47,350 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 01:38:47,350 INFO ]: Start accepts. Automaton has 4 states. Word has length 11 [2018-06-22 01:38:47,351 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:38:47,353 INFO ]: With dead ends: 48 [2018-06-22 01:38:47,353 INFO ]: Without dead ends: 48 [2018-06-22 01:38:47,354 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 01:38:47,354 INFO ]: Start minimizeSevpa. Operand 48 states. [2018-06-22 01:38:47,364 INFO ]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-06-22 01:38:47,364 INFO ]: Start removeUnreachable. Operand 48 states. [2018-06-22 01:38:47,366 INFO ]: Finished removeUnreachable. Reduced from 48 states to 48 states and 67 transitions. [2018-06-22 01:38:47,366 INFO ]: Start accepts. Automaton has 48 states and 67 transitions. Word has length 11 [2018-06-22 01:38:47,366 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:38:47,366 INFO ]: Abstraction has 48 states and 67 transitions. [2018-06-22 01:38:47,366 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:38:47,366 INFO ]: Start isEmpty. Operand 48 states and 67 transitions. [2018-06-22 01:38:47,368 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 01:38:47,368 INFO ]: Found error trace [2018-06-22 01:38:47,368 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:38:47,368 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:38:47,368 INFO ]: Analyzing trace with hash -512955359, now seen corresponding path program 1 times [2018-06-22 01:38:47,368 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:38:47,368 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:38:47,369 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:38:47,369 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:38:47,369 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:38:47,384 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:38:47,532 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:38:47,532 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:38:47,532 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-06-22 01:38:47,533 INFO ]: Interpolant automaton has 5 states [2018-06-22 01:38:47,533 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 01:38:47,533 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-22 01:38:47,533 INFO ]: Start difference. First operand 48 states and 67 transitions. Second operand 5 states. [2018-06-22 01:38:47,743 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:38:47,743 INFO ]: Finished difference Result 90 states and 173 transitions. [2018-06-22 01:38:47,744 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 01:38:47,744 INFO ]: Start accepts. Automaton has 5 states. Word has length 13 [2018-06-22 01:38:47,744 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:38:47,751 INFO ]: With dead ends: 90 [2018-06-22 01:38:47,751 INFO ]: Without dead ends: 90 [2018-06-22 01:38:47,751 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 01:38:47,752 INFO ]: Start minimizeSevpa. Operand 90 states. [2018-06-22 01:38:47,775 INFO ]: Finished minimizeSevpa. Reduced states from 90 to 54. [2018-06-22 01:38:47,775 INFO ]: Start removeUnreachable. Operand 54 states. [2018-06-22 01:38:47,776 INFO ]: Finished removeUnreachable. Reduced from 54 states to 54 states and 75 transitions. [2018-06-22 01:38:47,776 INFO ]: Start accepts. Automaton has 54 states and 75 transitions. Word has length 13 [2018-06-22 01:38:47,776 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:38:47,776 INFO ]: Abstraction has 54 states and 75 transitions. [2018-06-22 01:38:47,776 INFO ]: Interpolant automaton has 5 states. [2018-06-22 01:38:47,776 INFO ]: Start isEmpty. Operand 54 states and 75 transitions. [2018-06-22 01:38:47,779 INFO ]: Finished isEmpty. Found accepting run of length 23 [2018-06-22 01:38:47,779 INFO ]: Found error trace [2018-06-22 01:38:47,779 INFO ]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:38:47,779 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:38:47,780 INFO ]: Analyzing trace with hash 1646596318, now seen corresponding path program 1 times [2018-06-22 01:38:47,780 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:38:47,780 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:38:47,780 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:38:47,780 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:38:47,780 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:38:47,786 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:38:47,845 INFO ]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 01:38:47,845 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:38:47,845 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 01:38:47,873 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:38:47,909 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:38:47,917 INFO ]: Computing forward predicates... [2018-06-22 01:38:47,946 INFO ]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 01:38:47,967 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:38:47,967 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-06-22 01:38:47,968 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:38:47,968 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:38:47,968 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:38:47,968 INFO ]: Start difference. First operand 54 states and 75 transitions. Second operand 4 states. [2018-06-22 01:38:48,146 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:38:48,146 INFO ]: Finished difference Result 72 states and 101 transitions. [2018-06-22 01:38:48,149 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 01:38:48,149 INFO ]: Start accepts. Automaton has 4 states. Word has length 22 [2018-06-22 01:38:48,149 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:38:48,151 INFO ]: With dead ends: 72 [2018-06-22 01:38:48,151 INFO ]: Without dead ends: 72 [2018-06-22 01:38:48,152 INFO ]: 0 DeclaredPredicates, 27 GetRequests, 24 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 01:38:48,152 INFO ]: Start minimizeSevpa. Operand 72 states. [2018-06-22 01:38:48,165 INFO ]: Finished minimizeSevpa. Reduced states from 72 to 72. [2018-06-22 01:38:48,170 INFO ]: Start removeUnreachable. Operand 72 states. [2018-06-22 01:38:48,171 INFO ]: Finished removeUnreachable. Reduced from 72 states to 72 states and 101 transitions. [2018-06-22 01:38:48,171 INFO ]: Start accepts. Automaton has 72 states and 101 transitions. Word has length 22 [2018-06-22 01:38:48,171 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:38:48,171 INFO ]: Abstraction has 72 states and 101 transitions. [2018-06-22 01:38:48,171 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:38:48,172 INFO ]: Start isEmpty. Operand 72 states and 101 transitions. [2018-06-22 01:38:48,184 INFO ]: Finished isEmpty. Found accepting run of length 34 [2018-06-22 01:38:48,184 INFO ]: Found error trace [2018-06-22 01:38:48,184 INFO ]: trace histogram [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] [2018-06-22 01:38:48,184 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:38:48,184 INFO ]: Analyzing trace with hash -695397816, now seen corresponding path program 1 times [2018-06-22 01:38:48,184 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:38:48,184 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:38:48,185 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:38:48,185 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:38:48,185 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:38:48,223 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:38:48,854 INFO ]: Checked inductivity of 18 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-06-22 01:38:48,854 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:38:48,854 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 [2018-06-22 01:38:48,863 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:38:48,910 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:38:48,916 INFO ]: Computing forward predicates... [2018-06-22 01:38:49,104 INFO ]: Checked inductivity of 18 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-06-22 01:38:49,132 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:38:49,132 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 17 [2018-06-22 01:38:49,133 INFO ]: Interpolant automaton has 17 states [2018-06-22 01:38:49,133 INFO ]: Constructing interpolant automaton starting with 17 interpolants. [2018-06-22 01:38:49,133 INFO ]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2018-06-22 01:38:49,133 INFO ]: Start difference. First operand 72 states and 101 transitions. Second operand 17 states. [2018-06-22 01:38:51,332 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:38:51,332 INFO ]: Finished difference Result 261 states and 711 transitions. [2018-06-22 01:38:51,333 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-06-22 01:38:51,333 INFO ]: Start accepts. Automaton has 17 states. Word has length 33 [2018-06-22 01:38:51,333 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:38:51,344 INFO ]: With dead ends: 261 [2018-06-22 01:38:51,371 INFO ]: Without dead ends: 167 [2018-06-22 01:38:51,372 INFO ]: 0 DeclaredPredicates, 71 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 425 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=300, Invalid=1592, Unknown=0, NotChecked=0, Total=1892 [2018-06-22 01:38:51,372 INFO ]: Start minimizeSevpa. Operand 167 states. [2018-06-22 01:38:51,414 INFO ]: Finished minimizeSevpa. Reduced states from 167 to 91. [2018-06-22 01:38:51,414 INFO ]: Start removeUnreachable. Operand 91 states. [2018-06-22 01:38:51,419 INFO ]: Finished removeUnreachable. Reduced from 91 states to 91 states and 131 transitions. [2018-06-22 01:38:51,419 INFO ]: Start accepts. Automaton has 91 states and 131 transitions. Word has length 33 [2018-06-22 01:38:51,420 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:38:51,420 INFO ]: Abstraction has 91 states and 131 transitions. [2018-06-22 01:38:51,420 INFO ]: Interpolant automaton has 17 states. [2018-06-22 01:38:51,420 INFO ]: Start isEmpty. Operand 91 states and 131 transitions. [2018-06-22 01:38:51,423 INFO ]: Finished isEmpty. Found accepting run of length 36 [2018-06-22 01:38:51,424 INFO ]: Found error trace [2018-06-22 01:38:51,424 INFO ]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:38:51,430 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:38:51,430 INFO ]: Analyzing trace with hash -934158170, now seen corresponding path program 1 times [2018-06-22 01:38:51,430 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:38:51,430 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:38:51,431 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:38:51,431 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:38:51,431 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:38:51,454 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:38:51,622 INFO ]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 01:38:51,628 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:38:51,628 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 01:38:51,636 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:38:51,656 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:38:51,658 INFO ]: Computing forward predicates... [2018-06-22 01:38:51,664 INFO ]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 01:38:51,697 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:38:51,697 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-06-22 01:38:51,698 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:38:51,698 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:38:51,698 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:38:51,698 INFO ]: Start difference. First operand 91 states and 131 transitions. Second operand 4 states. [2018-06-22 01:38:51,877 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:38:51,877 INFO ]: Finished difference Result 144 states and 211 transitions. [2018-06-22 01:38:51,878 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 01:38:51,878 INFO ]: Start accepts. Automaton has 4 states. Word has length 35 [2018-06-22 01:38:51,878 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:38:51,880 INFO ]: With dead ends: 144 [2018-06-22 01:38:51,880 INFO ]: Without dead ends: 117 [2018-06-22 01:38:51,880 INFO ]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 01:38:51,881 INFO ]: Start minimizeSevpa. Operand 117 states. [2018-06-22 01:38:51,890 INFO ]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-06-22 01:38:51,890 INFO ]: Start removeUnreachable. Operand 117 states. [2018-06-22 01:38:51,892 INFO ]: Finished removeUnreachable. Reduced from 117 states to 117 states and 167 transitions. [2018-06-22 01:38:51,892 INFO ]: Start accepts. Automaton has 117 states and 167 transitions. Word has length 35 [2018-06-22 01:38:51,892 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:38:51,892 INFO ]: Abstraction has 117 states and 167 transitions. [2018-06-22 01:38:51,892 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:38:51,892 INFO ]: Start isEmpty. Operand 117 states and 167 transitions. [2018-06-22 01:38:51,895 INFO ]: Finished isEmpty. Found accepting run of length 49 [2018-06-22 01:38:51,896 INFO ]: Found error trace [2018-06-22 01:38:51,896 INFO ]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:38:51,896 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:38:51,896 INFO ]: Analyzing trace with hash 217972690, now seen corresponding path program 1 times [2018-06-22 01:38:51,896 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:38:51,896 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:38:51,897 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:38:51,897 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:38:51,897 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:38:51,905 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:38:51,975 INFO ]: Checked inductivity of 48 backedges. 23 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-06-22 01:38:51,975 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:38:51,975 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 01:38:51,990 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:38:52,022 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:38:52,024 INFO ]: Computing forward predicates... [2018-06-22 01:38:52,030 INFO ]: Checked inductivity of 48 backedges. 23 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-06-22 01:38:52,051 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:38:52,051 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-06-22 01:38:52,052 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:38:52,052 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:38:52,052 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:38:52,052 INFO ]: Start difference. First operand 117 states and 167 transitions. Second operand 4 states. [2018-06-22 01:38:52,554 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:38:52,554 INFO ]: Finished difference Result 142 states and 204 transitions. [2018-06-22 01:38:52,554 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 01:38:52,554 INFO ]: Start accepts. Automaton has 4 states. Word has length 48 [2018-06-22 01:38:52,555 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:38:52,556 INFO ]: With dead ends: 142 [2018-06-22 01:38:52,556 INFO ]: Without dead ends: 109 [2018-06-22 01:38:52,556 INFO ]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 01:38:52,557 INFO ]: Start minimizeSevpa. Operand 109 states. [2018-06-22 01:38:52,570 INFO ]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-06-22 01:38:52,570 INFO ]: Start removeUnreachable. Operand 109 states. [2018-06-22 01:38:52,576 INFO ]: Finished removeUnreachable. Reduced from 109 states to 109 states and 152 transitions. [2018-06-22 01:38:52,577 INFO ]: Start accepts. Automaton has 109 states and 152 transitions. Word has length 48 [2018-06-22 01:38:52,577 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:38:52,577 INFO ]: Abstraction has 109 states and 152 transitions. [2018-06-22 01:38:52,577 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:38:52,577 INFO ]: Start isEmpty. Operand 109 states and 152 transitions. [2018-06-22 01:38:52,587 INFO ]: Finished isEmpty. Found accepting run of length 69 [2018-06-22 01:38:52,587 INFO ]: Found error trace [2018-06-22 01:38:52,587 INFO ]: trace histogram [6, 6, 6, 5, 5, 4, 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] [2018-06-22 01:38:52,587 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:38:52,587 INFO ]: Analyzing trace with hash -805080634, now seen corresponding path program 1 times [2018-06-22 01:38:52,587 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:38:52,587 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:38:52,588 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:38:52,588 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:38:52,588 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:38:52,602 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-22 01:38:52,602 INFO ]: Advancing trace checker [2018-06-22 01:38:52,602 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-06-22 01:38:52,620 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-22 01:38:52,679 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:38:52,683 INFO ]: Computing forward predicates... [2018-06-22 01:38:52,826 INFO ]: Checked inductivity of 114 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2018-06-22 01:38:52,857 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:38:52,857 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 01:38:52,858 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:38:52,858 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:38:52,858 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:38:52,858 INFO ]: Start difference. First operand 109 states and 152 transitions. Second operand 4 states. [2018-06-22 01:38:53,045 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:38:53,045 INFO ]: Finished difference Result 140 states and 196 transitions. [2018-06-22 01:38:53,045 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 01:38:53,045 INFO ]: Start accepts. Automaton has 4 states. Word has length 68 [2018-06-22 01:38:53,045 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:38:53,047 INFO ]: With dead ends: 140 [2018-06-22 01:38:53,047 INFO ]: Without dead ends: 140 [2018-06-22 01:38:53,047 INFO ]: 0 DeclaredPredicates, 69 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 01:38:53,047 INFO ]: Start minimizeSevpa. Operand 140 states. [2018-06-22 01:38:53,054 INFO ]: Finished minimizeSevpa. Reduced states from 140 to 140. [2018-06-22 01:38:53,054 INFO ]: Start removeUnreachable. Operand 140 states. [2018-06-22 01:38:53,056 INFO ]: Finished removeUnreachable. Reduced from 140 states to 140 states and 196 transitions. [2018-06-22 01:38:53,056 INFO ]: Start accepts. Automaton has 140 states and 196 transitions. Word has length 68 [2018-06-22 01:38:53,056 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:38:53,056 INFO ]: Abstraction has 140 states and 196 transitions. [2018-06-22 01:38:53,056 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:38:53,056 INFO ]: Start isEmpty. Operand 140 states and 196 transitions. [2018-06-22 01:38:53,061 INFO ]: Finished isEmpty. Found accepting run of length 78 [2018-06-22 01:38:53,061 INFO ]: Found error trace [2018-06-22 01:38:53,061 INFO ]: trace histogram [7, 7, 7, 6, 5, 4, 3, 3, 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] [2018-06-22 01:38:53,061 INFO ]: === Iteration 9 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:38:53,061 INFO ]: Analyzing trace with hash 325993057, now seen corresponding path program 2 times [2018-06-22 01:38:53,061 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:38:53,061 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:38:53,062 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:38:53,062 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:38:53,062 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:38:53,068 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-22 01:38:53,068 INFO ]: Advancing trace checker [2018-06-22 01:38:53,068 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-06-22 01:38:53,082 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-22 01:38:53,143 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 01:38:53,143 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:38:53,149 INFO ]: Computing forward predicates... [2018-06-22 01:38:53,309 INFO ]: Checked inductivity of 153 backedges. 79 proven. 19 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-06-22 01:38:53,330 INFO ]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-06-22 01:38:53,330 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-06-22 01:38:53,330 INFO ]: Interpolant automaton has 12 states [2018-06-22 01:38:53,330 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 01:38:53,330 INFO ]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-06-22 01:38:53,330 INFO ]: Start difference. First operand 140 states and 196 transitions. Second operand 12 states. [2018-06-22 01:38:53,895 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:38:53,895 INFO ]: Finished difference Result 136 states and 176 transitions. [2018-06-22 01:38:53,895 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-06-22 01:38:53,895 INFO ]: Start accepts. Automaton has 12 states. Word has length 77 [2018-06-22 01:38:53,896 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:38:53,896 INFO ]: With dead ends: 136 [2018-06-22 01:38:53,896 INFO ]: Without dead ends: 0 [2018-06-22 01:38:53,896 INFO ]: 0 DeclaredPredicates, 90 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=537, Unknown=0, NotChecked=0, Total=650 [2018-06-22 01:38:53,896 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 01:38:53,896 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 01:38:53,896 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 01:38:53,896 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 01:38:53,896 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 77 [2018-06-22 01:38:53,896 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:38:53,896 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 01:38:53,896 INFO ]: Interpolant automaton has 12 states. [2018-06-22 01:38:53,897 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 01:38:53,897 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 01:38:53,900 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 01:38:53 BoogieIcfgContainer [2018-06-22 01:38:53,900 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 01:38:53,901 INFO ]: Toolchain (without parser) took 7825.65 ms. Allocated memory was 309.3 MB in the beginning and 384.3 MB in the end (delta: 75.0 MB). Free memory was 262.7 MB in the beginning and 269.3 MB in the end (delta: -6.6 MB). Peak memory consumption was 68.4 MB. Max. memory is 3.6 GB. [2018-06-22 01:38:53,903 INFO ]: SmtParser took 0.06 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 01:38:53,903 INFO ]: ChcToBoogie took 64.55 ms. Allocated memory is still 309.3 MB. Free memory was 261.7 MB in the beginning and 259.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:38:53,903 INFO ]: Boogie Preprocessor took 54.55 ms. Allocated memory is still 309.3 MB. Free memory was 259.7 MB in the beginning and 258.7 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-22 01:38:53,904 INFO ]: RCFGBuilder took 363.89 ms. Allocated memory is still 309.3 MB. Free memory was 258.7 MB in the beginning and 245.7 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:38:53,904 INFO ]: TraceAbstraction took 7333.80 ms. Allocated memory was 309.3 MB in the beginning and 384.3 MB in the end (delta: 75.0 MB). Free memory was 244.7 MB in the beginning and 269.3 MB in the end (delta: -24.6 MB). Peak memory consumption was 50.4 MB. Max. memory is 3.6 GB. [2018-06-22 01:38:53,908 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.06 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 64.55 ms. Allocated memory is still 309.3 MB. Free memory was 261.7 MB in the beginning and 259.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 54.55 ms. Allocated memory is still 309.3 MB. Free memory was 259.7 MB in the beginning and 258.7 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 363.89 ms. Allocated memory is still 309.3 MB. Free memory was 258.7 MB in the beginning and 245.7 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 7333.80 ms. Allocated memory was 309.3 MB in the beginning and 384.3 MB in the end (delta: 75.0 MB). Free memory was 244.7 MB in the beginning and 269.3 MB in the end (delta: -24.6 MB). Peak memory consumption was 50.4 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, 29 locations, 1 error locations. SAFE Result, 7.2s OverallTime, 9 OverallIterations, 7 TraceHistogramMax, 4.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 419 SDtfs, 634 SDslu, 966 SDs, 0 SdLazy, 1868 SolverSat, 598 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 364 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=140occurred in iteration=8, 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: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 112 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 455 NumberOfCodeBlocks, 455 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 442 ConstructedInterpolants, 0 QuantifiedInterpolants, 34574 SizeOfPredicates, 21 NumberOfNonLiveVariables, 1243 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 13 InterpolantComputations, 4 PerfectInterpolantSequences, 418/459 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/a-dotprod.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_01-38-53-918.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/a-dotprod.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_01-38-53-918.csv Received shutdown request...