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/AutomizerBpl.xml -s ../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c_9.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d769cf3 [2018-10-15 15:06:54,709 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-15 15:06:54,711 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-15 15:06:54,724 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-15 15:06:54,724 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-15 15:06:54,725 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-15 15:06:54,726 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-15 15:06:54,728 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-15 15:06:54,730 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-15 15:06:54,731 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-15 15:06:54,732 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-15 15:06:54,756 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 15:06:54,765 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-15 15:06:54,765 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-15 15:06:54,766 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-15 15:06:54,766 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-15 15:06:54,767 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-15 15:06:54,767 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-15 15:06:54,767 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-15 15:06:54,768 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-15 15:06:54,768 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-15 15:06:54,768 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-15 15:06:54,768 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-15 15:06:54,768 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-15 15:06:54,769 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-15 15:06:54,769 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-15 15:06:54,770 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-15 15:06:54,812 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-15 15:06:54,825 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-15 15:06:54,829 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-15 15:06:54,830 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-15 15:06:54,831 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-15 15:06:54,832 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c_9.bpl [2018-10-15 15:06:54,832 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c_9.bpl' [2018-10-15 15:06:54,902 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-15 15:06:54,904 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-15 15:06:54,905 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-15 15:06:54,905 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-15 15:06:54,905 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-15 15:06:54,931 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:06:54" (1/1) ... [2018-10-15 15:06:54,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:06:54" (1/1) ... [2018-10-15 15:06:54,948 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:06:54" (1/1) ... [2018-10-15 15:06:54,948 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:06:54" (1/1) ... [2018-10-15 15:06:54,963 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:06:54" (1/1) ... [2018-10-15 15:06:54,971 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:06:54" (1/1) ... [2018-10-15 15:06:54,973 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:06:54" (1/1) ... [2018-10-15 15:06:54,981 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-15 15:06:54,987 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-15 15:06:54,987 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-15 15:06:54,987 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-15 15:06:54,990 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:06:54" (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 15:06:55,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-15 15:06:55,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-15 15:06:56,115 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-15 15:06:56,116 INFO L202 PluginConnector]: Adding new model pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:06:56 BoogieIcfgContainer [2018-10-15 15:06:56,117 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-15 15:06:56,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-15 15:06:56,122 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-15 15:06:56,126 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-15 15:06:56,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 03:06:54" (1/2) ... [2018-10-15 15:06:56,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bfb4173 and model type pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:06:56, skipping insertion in model container [2018-10-15 15:06:56,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:06:56" (2/2) ... [2018-10-15 15:06:56,129 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c_9.bpl [2018-10-15 15:06:56,139 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-15 15:06:56,153 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-15 15:06:56,171 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-15 15:06:56,197 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-15 15:06:56,198 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-15 15:06:56,198 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-15 15:06:56,199 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-15 15:06:56,199 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-15 15:06:56,199 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-15 15:06:56,199 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-15 15:06:56,199 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-15 15:06:56,199 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-15 15:06:56,223 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states. [2018-10-15 15:06:56,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-10-15 15:06:56,240 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:06:56,242 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 15:06:56,243 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:06:56,249 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:06:56,249 INFO L82 PathProgramCache]: Analyzing trace with hash -2124129075, now seen corresponding path program 1 times [2018-10-15 15:06:56,306 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:06:56,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:06:56,616 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 15:06:56,619 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:06:56,619 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:06:56,625 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:06:56,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:06:56,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:06:56,645 INFO L87 Difference]: Start difference. First operand 173 states. Second operand 3 states. [2018-10-15 15:06:56,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:06:56,777 INFO L93 Difference]: Finished difference Result 228 states and 235 transitions. [2018-10-15 15:06:56,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:06:56,783 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 150 [2018-10-15 15:06:56,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:06:56,799 INFO L225 Difference]: With dead ends: 228 [2018-10-15 15:06:56,799 INFO L226 Difference]: Without dead ends: 228 [2018-10-15 15:06:56,802 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:06:56,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-10-15 15:06:56,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 225. [2018-10-15 15:06:56,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-10-15 15:06:56,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 233 transitions. [2018-10-15 15:06:56,877 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 233 transitions. Word has length 150 [2018-10-15 15:06:56,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:06:56,881 INFO L481 AbstractCegarLoop]: Abstraction has 225 states and 233 transitions. [2018-10-15 15:06:56,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:06:56,882 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 233 transitions. [2018-10-15 15:06:56,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-10-15 15:06:56,893 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:06:56,893 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 15:06:56,895 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:06:56,895 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:06:56,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1409931380, now seen corresponding path program 1 times [2018-10-15 15:06:56,904 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:06:56,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:06:57,222 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 15:06:57,222 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:06:57,223 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-10-15 15:06:57,225 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-15 15:06:57,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-15 15:06:57,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-10-15 15:06:57,226 INFO L87 Difference]: Start difference. First operand 225 states and 233 transitions. Second operand 8 states. [2018-10-15 15:06:57,775 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-15 15:06:58,181 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-15 15:06:58,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:06:58,322 INFO L93 Difference]: Finished difference Result 371 states and 386 transitions. [2018-10-15 15:06:58,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-15 15:06:58,323 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 152 [2018-10-15 15:06:58,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:06:58,328 INFO L225 Difference]: With dead ends: 371 [2018-10-15 15:06:58,330 INFO L226 Difference]: Without dead ends: 371 [2018-10-15 15:06:58,332 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2018-10-15 15:06:58,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2018-10-15 15:06:58,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 243. [2018-10-15 15:06:58,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-10-15 15:06:58,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 251 transitions. [2018-10-15 15:06:58,375 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 251 transitions. Word has length 152 [2018-10-15 15:06:58,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:06:58,376 INFO L481 AbstractCegarLoop]: Abstraction has 243 states and 251 transitions. [2018-10-15 15:06:58,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-15 15:06:58,376 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 251 transitions. [2018-10-15 15:06:58,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-10-15 15:06:58,382 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:06:58,382 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 15:06:58,382 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:06:58,383 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:06:58,383 INFO L82 PathProgramCache]: Analyzing trace with hash -755918017, now seen corresponding path program 1 times [2018-10-15 15:06:58,389 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:06:58,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:06:58,540 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 15:06:58,540 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:06:58,541 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:06:58,541 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:06:58,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:06:58,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:06:58,542 INFO L87 Difference]: Start difference. First operand 243 states and 251 transitions. Second operand 3 states. [2018-10-15 15:06:58,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:06:58,582 INFO L93 Difference]: Finished difference Result 349 states and 362 transitions. [2018-10-15 15:06:58,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:06:58,583 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2018-10-15 15:06:58,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:06:58,587 INFO L225 Difference]: With dead ends: 349 [2018-10-15 15:06:58,588 INFO L226 Difference]: Without dead ends: 349 [2018-10-15 15:06:58,588 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:06:58,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2018-10-15 15:06:58,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 347. [2018-10-15 15:06:58,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2018-10-15 15:06:58,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 360 transitions. [2018-10-15 15:06:58,623 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 360 transitions. Word has length 153 [2018-10-15 15:06:58,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:06:58,625 INFO L481 AbstractCegarLoop]: Abstraction has 347 states and 360 transitions. [2018-10-15 15:06:58,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:06:58,626 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 360 transitions. [2018-10-15 15:06:58,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-10-15 15:06:58,631 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:06:58,631 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 15:06:58,631 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:06:58,633 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:06:58,633 INFO L82 PathProgramCache]: Analyzing trace with hash -777417086, now seen corresponding path program 1 times [2018-10-15 15:06:58,638 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:06:58,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:06:58,825 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 15:06:58,826 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:06:58,826 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:06:58,827 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:06:58,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:06:58,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:06:58,828 INFO L87 Difference]: Start difference. First operand 347 states and 360 transitions. Second operand 3 states. [2018-10-15 15:06:58,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:06:58,847 INFO L93 Difference]: Finished difference Result 478 states and 497 transitions. [2018-10-15 15:06:58,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:06:58,849 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 156 [2018-10-15 15:06:58,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:06:58,852 INFO L225 Difference]: With dead ends: 478 [2018-10-15 15:06:58,852 INFO L226 Difference]: Without dead ends: 478 [2018-10-15 15:06:58,852 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:06:58,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2018-10-15 15:06:58,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 475. [2018-10-15 15:06:58,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2018-10-15 15:06:58,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 495 transitions. [2018-10-15 15:06:58,865 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 495 transitions. Word has length 156 [2018-10-15 15:06:58,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:06:58,866 INFO L481 AbstractCegarLoop]: Abstraction has 475 states and 495 transitions. [2018-10-15 15:06:58,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:06:58,866 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 495 transitions. [2018-10-15 15:06:58,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-10-15 15:06:58,870 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:06:58,870 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 15:06:58,871 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:06:58,871 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:06:58,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1059038633, now seen corresponding path program 1 times [2018-10-15 15:06:58,873 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:06:58,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:06:59,061 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 15:06:59,062 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:06:59,062 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:06:59,063 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:06:59,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:06:59,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:06:59,064 INFO L87 Difference]: Start difference. First operand 475 states and 495 transitions. Second operand 3 states. [2018-10-15 15:06:59,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:06:59,094 INFO L93 Difference]: Finished difference Result 822 states and 856 transitions. [2018-10-15 15:06:59,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:06:59,095 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 203 [2018-10-15 15:06:59,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:06:59,102 INFO L225 Difference]: With dead ends: 822 [2018-10-15 15:06:59,102 INFO L226 Difference]: Without dead ends: 822 [2018-10-15 15:06:59,102 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:06:59,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2018-10-15 15:06:59,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 795. [2018-10-15 15:06:59,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 795 states. [2018-10-15 15:06:59,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 830 transitions. [2018-10-15 15:06:59,126 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 830 transitions. Word has length 203 [2018-10-15 15:06:59,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:06:59,127 INFO L481 AbstractCegarLoop]: Abstraction has 795 states and 830 transitions. [2018-10-15 15:06:59,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:06:59,127 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 830 transitions. [2018-10-15 15:06:59,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-10-15 15:06:59,131 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:06:59,131 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 15:06:59,131 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:06:59,132 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:06:59,132 INFO L82 PathProgramCache]: Analyzing trace with hash -722337263, now seen corresponding path program 1 times [2018-10-15 15:06:59,133 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:06:59,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:06:59,278 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-15 15:06:59,278 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 15:06:59,278 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 15:06:59,279 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 15:06:59,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 15:06:59,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:06:59,280 INFO L87 Difference]: Start difference. First operand 795 states and 830 transitions. Second operand 3 states. [2018-10-15 15:06:59,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:06:59,343 INFO L93 Difference]: Finished difference Result 798 states and 826 transitions. [2018-10-15 15:06:59,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 15:06:59,344 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 204 [2018-10-15 15:06:59,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:06:59,347 INFO L225 Difference]: With dead ends: 798 [2018-10-15 15:06:59,347 INFO L226 Difference]: Without dead ends: 798 [2018-10-15 15:06:59,348 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 15:06:59,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2018-10-15 15:06:59,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 795. [2018-10-15 15:06:59,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 795 states. [2018-10-15 15:06:59,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 824 transitions. [2018-10-15 15:06:59,365 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 824 transitions. Word has length 204 [2018-10-15 15:06:59,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:06:59,365 INFO L481 AbstractCegarLoop]: Abstraction has 795 states and 824 transitions. [2018-10-15 15:06:59,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 15:06:59,366 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 824 transitions. [2018-10-15 15:06:59,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-10-15 15:06:59,368 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:06:59,369 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 15:06:59,369 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:06:59,370 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:06:59,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1905304701, now seen corresponding path program 2 times [2018-10-15 15:06:59,371 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:06:59,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:06:59,564 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 19 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-15 15:06:59,565 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-15 15:06:59,565 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-10-15 15:06:59,566 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-15 15:06:59,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-15 15:06:59,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-15 15:06:59,566 INFO L87 Difference]: Start difference. First operand 795 states and 824 transitions. Second operand 4 states. [2018-10-15 15:06:59,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:06:59,661 INFO L93 Difference]: Finished difference Result 1199 states and 1236 transitions. [2018-10-15 15:06:59,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-15 15:06:59,661 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 204 [2018-10-15 15:06:59,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:06:59,667 INFO L225 Difference]: With dead ends: 1199 [2018-10-15 15:06:59,667 INFO L226 Difference]: Without dead ends: 1199 [2018-10-15 15:06:59,668 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-15 15:06:59,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2018-10-15 15:06:59,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 1195. [2018-10-15 15:06:59,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1195 states. [2018-10-15 15:06:59,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1232 transitions. [2018-10-15 15:06:59,688 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1232 transitions. Word has length 204 [2018-10-15 15:06:59,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:06:59,689 INFO L481 AbstractCegarLoop]: Abstraction has 1195 states and 1232 transitions. [2018-10-15 15:06:59,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-15 15:06:59,689 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1232 transitions. [2018-10-15 15:06:59,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-10-15 15:06:59,693 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:06:59,694 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 15:06:59,694 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:06:59,694 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:06:59,695 INFO L82 PathProgramCache]: Analyzing trace with hash -347116965, now seen corresponding path program 3 times [2018-10-15 15:06:59,696 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:06:59,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:07:00,029 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 27 proven. 169 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2018-10-15 15:07:00,030 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-15 15:07:00,030 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-10-15 15:07:00,030 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-15 15:07:00,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-15 15:07:00,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-15 15:07:00,031 INFO L87 Difference]: Start difference. First operand 1195 states and 1232 transitions. Second operand 5 states. [2018-10-15 15:07:00,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:07:00,271 INFO L93 Difference]: Finished difference Result 1519 states and 1564 transitions. [2018-10-15 15:07:00,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-15 15:07:00,271 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 304 [2018-10-15 15:07:00,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:07:00,278 INFO L225 Difference]: With dead ends: 1519 [2018-10-15 15:07:00,278 INFO L226 Difference]: Without dead ends: 1519 [2018-10-15 15:07:00,279 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-15 15:07:00,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1519 states. [2018-10-15 15:07:00,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1519 to 1515. [2018-10-15 15:07:00,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1515 states. [2018-10-15 15:07:00,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1515 states to 1515 states and 1560 transitions. [2018-10-15 15:07:00,305 INFO L78 Accepts]: Start accepts. Automaton has 1515 states and 1560 transitions. Word has length 304 [2018-10-15 15:07:00,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:07:00,306 INFO L481 AbstractCegarLoop]: Abstraction has 1515 states and 1560 transitions. [2018-10-15 15:07:00,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-15 15:07:00,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1515 states and 1560 transitions. [2018-10-15 15:07:00,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2018-10-15 15:07:00,314 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 15:07:00,314 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 15:07:00,315 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 15:07:00,315 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 15:07:00,315 INFO L82 PathProgramCache]: Analyzing trace with hash -688707271, now seen corresponding path program 4 times [2018-10-15 15:07:00,317 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 15:07:00,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 15:07:01,261 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-15 15:07:02,092 INFO L134 CoverageAnalysis]: Checked inductivity of 622 backedges. 364 proven. 116 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2018-10-15 15:07:02,093 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-15 15:07:02,093 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-10-15 15:07:02,094 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-15 15:07:02,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-15 15:07:02,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2018-10-15 15:07:02,095 INFO L87 Difference]: Start difference. First operand 1515 states and 1560 transitions. Second operand 11 states. [2018-10-15 15:07:03,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 15:07:03,127 INFO L93 Difference]: Finished difference Result 222 states and 221 transitions. [2018-10-15 15:07:03,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-15 15:07:03,127 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 404 [2018-10-15 15:07:03,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 15:07:03,128 INFO L225 Difference]: With dead ends: 222 [2018-10-15 15:07:03,128 INFO L226 Difference]: Without dead ends: 0 [2018-10-15 15:07:03,129 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=213, Invalid=543, Unknown=0, NotChecked=0, Total=756 [2018-10-15 15:07:03,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-15 15:07:03,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-15 15:07:03,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-15 15:07:03,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-15 15:07:03,130 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 404 [2018-10-15 15:07:03,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 15:07:03,130 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-15 15:07:03,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-15 15:07:03,131 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-15 15:07:03,131 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-15 15:07:03,139 INFO L202 PluginConnector]: Adding new model pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 03:07:03 BoogieIcfgContainer [2018-10-15 15:07:03,139 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-15 15:07:03,140 INFO L168 Benchmark]: Toolchain (without parser) took 8237.17 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 154.1 MB). Free memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: -135.7 MB). Peak memory consumption was 18.4 MB. Max. memory is 7.1 GB. [2018-10-15 15:07:03,141 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-15 15:07:03,142 INFO L168 Benchmark]: Boogie Preprocessor took 78.48 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-15 15:07:03,143 INFO L168 Benchmark]: RCFGBuilder took 1130.11 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-15 15:07:03,144 INFO L168 Benchmark]: TraceAbstraction took 7017.00 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 154.1 MB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -178.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-15 15:07:03,147 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 78.48 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 1130.11 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7017.00 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 154.1 MB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -178.0 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 312]: 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 1 procedures, 173 locations, 1 error locations. SAFE Result, 6.9s OverallTime, 9 OverallIterations, 6 TraceHistogramMax, 2.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1808 SDtfs, 1353 SDslu, 3128 SDs, 0 SdLazy, 323 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1515occurred 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: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 174 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 1930 NumberOfCodeBlocks, 1930 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1921 ConstructedInterpolants, 0 QuantifiedInterpolants, 2327510 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 6 PerfectInterpolantSequences, 663/967 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/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c_9.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-15_15-07-03-161.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c_9.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-15_15-07-03-161.csv Received shutdown request...