java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBplTransformed.xml -s ../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/count_up_down.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d769cf3 [2018-10-15 15:23:38,181 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-15 15:23:38,183 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-15 15:23:38,195 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-15 15:23:38,195 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-15 15:23:38,196 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-15 15:23:38,197 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-15 15:23:38,199 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-15 15:23:38,201 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-15 15:23:38,202 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-15 15:23:38,203 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-15 15:23:38,219 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-15 15:23:38,220 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-15 15:23:38,221 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-15 15:23:38,222 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-15 15:23:38,223 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-15 15:23:38,223 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-15 15:23:38,225 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-15 15:23:38,225 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-15 15:23:38,226 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-15 15:23:38,233 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-15 15:23:38,255 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-15 15:23:38,255 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-15 15:23:38,257 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-15 15:23:38,257 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-15 15:23:38,257 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-15 15:23:38,257 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-15 15:23:38,258 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-15 15:23:38,258 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-15 15:23:38,259 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-15 15:23:38,261 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-15 15:23:38,261 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-15 15:23:38,262 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-15 15:23:38,262 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-15 15:23:38,263 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-15 15:23:38,263 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-15 15:23:38,331 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-15 15:23:38,346 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-15 15:23:38,353 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-15 15:23:38,354 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-15 15:23:38,355 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-15 15:23:38,356 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/count_up_down.i_3.bpl [2018-10-15 15:23:38,356 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/count_up_down.i_3.bpl' [2018-10-15 15:23:38,414 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-15 15:23:38,416 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-15 15:23:38,416 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-15 15:23:38,417 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-15 15:23:38,417 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-15 15:23:38,447 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "count_up_down.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:23:38" (1/1) ... [2018-10-15 15:23:38,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "count_up_down.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:23:38" (1/1) ... [2018-10-15 15:23:38,459 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "count_up_down.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:23:38" (1/1) ... [2018-10-15 15:23:38,460 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "count_up_down.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:23:38" (1/1) ... [2018-10-15 15:23:38,462 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "count_up_down.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:23:38" (1/1) ... [2018-10-15 15:23:38,467 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "count_up_down.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:23:38" (1/1) ... [2018-10-15 15:23:38,468 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "count_up_down.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:23:38" (1/1) ... [2018-10-15 15:23:38,470 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-15 15:23:38,471 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-15 15:23:38,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-15 15:23:38,472 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-15 15:23:38,473 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "count_up_down.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:23:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory: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 [2018-10-15 15:23:38,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-15 15:23:38,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-15 15:23:38,745 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-15 15:23:38,746 INFO L202 PluginConnector]: Adding new model count_up_down.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:23:38 BoogieIcfgContainer [2018-10-15 15:23:38,746 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-15 15:23:38,747 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2018-10-15 15:23:38,747 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2018-10-15 15:23:38,748 INFO L276 PluginConnector]: IcfgTransformer initialized [2018-10-15 15:23:38,751 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "count_up_down.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:23:38" (1/1) ... [2018-10-15 15:23:38,756 WARN L219 ansformationObserver]: HeapSeparator: input icfg has no '#valid' array -- returning unchanged Icfg! [2018-10-15 15:23:38,772 INFO L202 PluginConnector]: Adding new model count_up_down.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 15.10 03:23:38 BasicIcfg [2018-10-15 15:23:38,772 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2018-10-15 15:23:38,773 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-15 15:23:38,773 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-15 15:23:38,777 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-15 15:23:38,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "count_up_down.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:23:38" (1/3) ... [2018-10-15 15:23:38,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c4c6dea and model type count_up_down.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:23:38, skipping insertion in model container [2018-10-15 15:23:38,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "count_up_down.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:23:38" (2/3) ... [2018-10-15 15:23:38,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c4c6dea and model type count_up_down.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 03:23:38, skipping insertion in model container [2018-10-15 15:23:38,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "count_up_down.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 15.10 03:23:38" (3/3) ... [2018-10-15 15:23:38,781 INFO L112 eAbstractionObserver]: Analyzing ICFG count_up_down.i_3.bplleft_unchanged_by_heapseparator [2018-10-15 15:23:38,791 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-15 15:23:38,799 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-15 15:23:38,816 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-15 15:23:38,851 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-15 15:23:38,851 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-15 15:23:38,852 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-15 15:23:38,852 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-15 15:23:38,852 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-15 15:23:38,852 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-15 15:23:38,852 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-15 15:23:38,853 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-15 15:23:38,853 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-15 15:23:38,868 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2018-10-15 15:23:38,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-15 15:23:38,877 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:23:38,878 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 15:23:38,879 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:23:38,885 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:23:38,885 INFO L82 PathProgramCache]: Analyzing trace with hash -2075737077, now seen corresponding path program 1 times [2018-10-15 15:23:38,940 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:23:38,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:23:39,240 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-10-15 15:23:39,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 15:23:39,364 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:23:39,364 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-15 15:23:39,369 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-15 15:23:39,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-15 15:23:39,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-10-15 15:23:39,388 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 7 states. [2018-10-15 15:23:39,802 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-10-15 15:23:39,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:23:39,894 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-10-15 15:23:39,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-15 15:23:39,896 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2018-10-15 15:23:39,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:23:39,912 INFO L225 Difference]: With dead ends: 29 [2018-10-15 15:23:39,912 INFO L226 Difference]: Without dead ends: 25 [2018-10-15 15:23:39,917 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2018-10-15 15:23:39,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-10-15 15:23:39,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2018-10-15 15:23:39,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-15 15:23:39,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-10-15 15:23:39,960 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 14 [2018-10-15 15:23:39,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:23:39,960 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-10-15 15:23:39,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-15 15:23:39,961 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-10-15 15:23:39,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-15 15:23:39,963 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:23:39,963 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 15:23:39,963 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:23:39,965 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:23:39,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1830910100, now seen corresponding path program 1 times [2018-10-15 15:23:39,966 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:23:40,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:23:40,653 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 15:23:40,654 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-15 15:23:40,654 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-10-15 15:23:40,656 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-15 15:23:40,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-15 15:23:40,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2018-10-15 15:23:40,657 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 12 states. [2018-10-15 15:23:40,999 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-10-15 15:23:41,282 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 24 [2018-10-15 15:23:53,443 WARN L179 SmtUtils]: Spent 12.12 s on a formula simplification. DAG size of input: 31 DAG size of output: 23 [2018-10-15 15:23:53,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:23:53,608 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-10-15 15:23:53,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-15 15:23:53,609 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2018-10-15 15:23:53,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:23:53,611 INFO L225 Difference]: With dead ends: 37 [2018-10-15 15:23:53,611 INFO L226 Difference]: Without dead ends: 33 [2018-10-15 15:23:53,613 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2018-10-15 15:23:53,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-15 15:23:53,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2018-10-15 15:23:53,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-15 15:23:53,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-10-15 15:23:53,619 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 22 [2018-10-15 15:23:53,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:23:53,620 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-10-15 15:23:53,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-15 15:23:53,620 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-10-15 15:23:53,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-15 15:23:53,621 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:23:53,622 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 15:23:53,622 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:23:53,622 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:23:53,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1386714141, now seen corresponding path program 2 times [2018-10-15 15:23:53,624 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:23:53,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:24:07,119 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 15:24:07,120 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-15 15:24:07,120 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-10-15 15:24:07,120 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-15 15:24:07,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-15 15:24:07,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=237, Unknown=1, NotChecked=0, Total=272 [2018-10-15 15:24:07,122 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 17 states. [2018-10-15 15:24:47,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:24:47,472 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-10-15 15:24:47,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-15 15:24:47,473 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 30 [2018-10-15 15:24:47,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:24:47,474 INFO L225 Difference]: With dead ends: 45 [2018-10-15 15:24:47,474 INFO L226 Difference]: Without dead ends: 41 [2018-10-15 15:24:47,475 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 27.7s TimeCoverageRelationStatistics Valid=86, Invalid=668, Unknown=2, NotChecked=0, Total=756 [2018-10-15 15:24:47,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-15 15:24:47,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2018-10-15 15:24:47,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-15 15:24:47,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-10-15 15:24:47,481 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 30 [2018-10-15 15:24:47,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:24:47,482 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-10-15 15:24:47,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-15 15:24:47,482 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-10-15 15:24:47,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-15 15:24:47,483 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:24:47,484 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 15:24:47,484 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:24:47,484 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:24:47,484 INFO L82 PathProgramCache]: Analyzing trace with hash -494791002, now seen corresponding path program 3 times [2018-10-15 15:24:47,485 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:24:47,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:24:48,028 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 14 [2018-10-15 15:24:48,688 WARN L179 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 15 [2018-10-15 15:24:50,816 WARN L179 SmtUtils]: Spent 2.10 s on a formula simplification. DAG size of input: 27 DAG size of output: 24 [2018-10-15 15:25:05,113 WARN L179 SmtUtils]: Spent 14.14 s on a formula simplification. DAG size of input: 28 DAG size of output: 26 [2018-10-15 15:25:05,716 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 15:25:05,716 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-15 15:25:05,717 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-10-15 15:25:05,717 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-15 15:25:05,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-15 15:25:05,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=416, Unknown=0, NotChecked=0, Total=462 [2018-10-15 15:25:05,719 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 22 states. [2018-10-15 15:25:19,901 WARN L179 SmtUtils]: Spent 13.65 s on a formula simplification. DAG size of input: 31 DAG size of output: 19 [2018-10-15 15:26:06,191 WARN L179 SmtUtils]: Spent 30.59 s on a formula simplification. DAG size of input: 31 DAG size of output: 28 [2018-10-15 15:26:24,272 WARN L179 SmtUtils]: Spent 2.43 s on a formula simplification. DAG size of input: 35 DAG size of output: 25 [2018-10-15 15:27:30,133 WARN L179 SmtUtils]: Spent 39.92 s on a formula simplification. DAG size of input: 38 DAG size of output: 28 [2018-10-15 15:27:55,055 WARN L179 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 26 [2018-10-15 15:27:55,357 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 17 [2018-10-15 15:27:57,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:27:57,936 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-10-15 15:27:57,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-15 15:27:57,937 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 38 [2018-10-15 15:27:57,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:27:57,939 INFO L225 Difference]: With dead ends: 53 [2018-10-15 15:27:57,939 INFO L226 Difference]: Without dead ends: 49 [2018-10-15 15:27:57,940 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 145.8s TimeCoverageRelationStatistics Valid=116, Invalid=1213, Unknown=3, NotChecked=0, Total=1332 [2018-10-15 15:27:57,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-15 15:27:57,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2018-10-15 15:27:57,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-15 15:27:57,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-10-15 15:27:57,945 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 38 [2018-10-15 15:27:57,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:27:57,945 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-10-15 15:27:57,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-15 15:27:57,946 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-10-15 15:27:57,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-15 15:27:57,948 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:27:57,948 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 15:27:57,948 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:27:57,948 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:27:57,949 INFO L82 PathProgramCache]: Analyzing trace with hash 291110959, now seen corresponding path program 4 times [2018-10-15 15:27:57,949 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:27:57,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:27:58,472 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 14 [2018-10-15 15:28:10,976 WARN L179 SmtUtils]: Spent 12.34 s on a formula simplification. DAG size of input: 26 DAG size of output: 22 [2018-10-15 15:28:28,235 WARN L179 SmtUtils]: Spent 16.90 s on a formula simplification. DAG size of input: 27 DAG size of output: 24 [2018-10-15 15:28:40,723 WARN L179 SmtUtils]: Spent 12.45 s on a formula simplification. DAG size of input: 27 DAG size of output: 24 [2018-10-15 15:29:05,124 WARN L179 SmtUtils]: Spent 24.33 s on a formula simplification. DAG size of input: 28 DAG size of output: 26 [2018-10-15 15:29:17,882 WARN L179 SmtUtils]: Spent 12.60 s on a formula simplification. DAG size of input: 29 DAG size of output: 27 [2018-10-15 15:29:43,365 WARN L179 SmtUtils]: Spent 25.38 s on a formula simplification. DAG size of input: 28 DAG size of output: 25 [2018-10-15 15:30:33,280 WARN L179 SmtUtils]: Spent 49.84 s on a formula simplification. DAG size of input: 28 DAG size of output: 25 [2018-10-15 15:30:58,852 WARN L179 SmtUtils]: Spent 590.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 12 [2018-10-15 15:30:59,185 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 15:30:59,186 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-15 15:30:59,186 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-10-15 15:30:59,187 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-15 15:30:59,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-15 15:30:59,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=644, Unknown=1, NotChecked=0, Total=702 [2018-10-15 15:30:59,188 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 27 states. [2018-10-15 15:31:25,134 WARN L179 SmtUtils]: Spent 20.43 s on a formula simplification. DAG size of input: 34 DAG size of output: 26 [2018-10-15 15:32:39,912 WARN L179 SmtUtils]: Spent 55.32 s on a formula simplification. DAG size of input: 31 DAG size of output: 28 [2018-10-15 15:33:25,505 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse0 (- c_ULTIMATE.start_main_~n~5)) (.cse1 (* 4294967296 (div (+ c_ULTIMATE.start_main_~x~5 1) 4294967296)))) (and (<= |c_ULTIMATE.start_main_#t~post2| 1) (<= c_ULTIMATE.start_main_~n~5 (+ c_ULTIMATE.start_main_~y~5 c_ULTIMATE.start_main_~x~5)) (<= (* 4294967296 (div (+ c_ULTIMATE.start_main_~x~5 (+ .cse0 (+ c_ULTIMATE.start_main_~y~5 (+ .cse1 4294967295)))) 4294967296)) c_ULTIMATE.start_main_~x~5) (<= 2 c_ULTIMATE.start_main_~y~5) (<= 1 |c_ULTIMATE.start_main_#t~post2|) (<= c_ULTIMATE.start_main_~n~5 (+ |c_ULTIMATE.start_main_#t~post2| c_ULTIMATE.start_main_~x~5 1)) (<= (* 4294967296 (div (+ c_ULTIMATE.start_main_~x~5 (+ .cse0 (+ |c_ULTIMATE.start_main_#t~post2| (+ .cse1 4294967296)))) 4294967296)) c_ULTIMATE.start_main_~x~5) (<= c_ULTIMATE.start_main_~y~5 2) (<= (* 4294967296 (div c_ULTIMATE.start_main_~n~5 4294967296)) c_ULTIMATE.start_main_~x~5))) is different from false