java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf -i ../../../trunk/examples/svcomp/array-examples/standard_copy7_false-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1cceb4a-m [2018-01-30 02:43:28,841 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-30 02:43:28,842 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-30 02:43:28,851 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-30 02:43:28,851 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-30 02:43:28,851 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-30 02:43:28,852 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-30 02:43:28,853 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-30 02:43:28,854 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-30 02:43:28,855 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-30 02:43:28,855 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-30 02:43:28,855 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-30 02:43:28,856 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-30 02:43:28,856 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-30 02:43:28,857 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-30 02:43:28,858 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-30 02:43:28,859 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-30 02:43:28,860 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-30 02:43:28,861 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-30 02:43:28,861 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-30 02:43:28,863 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-30 02:43:28,865 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-30 02:43:28,866 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-30 02:43:28,866 INFO L98 SettingsManager]: Beginning loading settings from /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf [2018-01-30 02:43:28,871 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-30 02:43:28,872 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-30 02:43:28,872 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-30 02:43:28,872 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-30 02:43:28,872 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-30 02:43:28,872 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-30 02:43:28,873 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-30 02:43:28,873 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-30 02:43:28,873 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-30 02:43:28,873 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-30 02:43:28,873 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-30 02:43:28,873 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-30 02:43:28,873 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-30 02:43:28,873 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-30 02:43:28,874 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-30 02:43:28,874 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-30 02:43:28,874 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-30 02:43:28,874 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-30 02:43:28,874 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-30 02:43:28,874 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-30 02:43:28,874 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-30 02:43:28,874 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-30 02:43:28,874 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-30 02:43:28,874 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-30 02:43:28,875 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-30 02:43:28,875 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-30 02:43:28,875 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-30 02:43:28,875 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-30 02:43:28,875 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-30 02:43:28,875 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-30 02:43:28,875 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-30 02:43:28,875 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-30 02:43:28,878 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-30 02:43:28,879 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-30 02:43:28,902 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-30 02:43:28,911 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-30 02:43:28,913 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-30 02:43:28,914 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-30 02:43:28,914 INFO L276 PluginConnector]: CDTParser initialized [2018-01-30 02:43:28,914 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copy7_false-unreach-call_ground.i [2018-01-30 02:43:28,983 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-30 02:43:28,983 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-01-30 02:43:28,984 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-30 02:43:28,984 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-30 02:43:28,988 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-30 02:43:28,988 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:43:28" (1/1) ... [2018-01-30 02:43:28,990 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f3f5068 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:43:28, skipping insertion in model container [2018-01-30 02:43:28,990 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:43:28" (1/1) ... [2018-01-30 02:43:28,999 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-30 02:43:29,009 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-30 02:43:29,091 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-30 02:43:29,105 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-30 02:43:29,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:43:29 WrapperNode [2018-01-30 02:43:29,109 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-30 02:43:29,109 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-30 02:43:29,110 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-30 02:43:29,110 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-30 02:43:29,119 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:43:29" (1/1) ... [2018-01-30 02:43:29,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:43:29" (1/1) ... [2018-01-30 02:43:29,124 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:43:29" (1/1) ... [2018-01-30 02:43:29,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:43:29" (1/1) ... [2018-01-30 02:43:29,126 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:43:29" (1/1) ... [2018-01-30 02:43:29,130 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:43:29" (1/1) ... [2018-01-30 02:43:29,131 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:43:29" (1/1) ... [2018-01-30 02:43:29,132 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-30 02:43:29,132 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-30 02:43:29,132 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-30 02:43:29,132 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-30 02:43:29,133 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:43:29" (1/1) ... No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-30 02:43:29,173 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-30 02:43:29,173 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-30 02:43:29,173 INFO L136 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-01-30 02:43:29,173 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-30 02:43:29,173 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-30 02:43:29,173 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-01-30 02:43:29,173 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-30 02:43:29,173 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-30 02:43:29,173 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-30 02:43:29,174 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-30 02:43:29,524 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-30 02:43:29,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:43:29 BoogieIcfgContainer [2018-01-30 02:43:29,524 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-30 02:43:29,524 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2018-01-30 02:43:29,524 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2018-01-30 02:43:29,525 INFO L276 PluginConnector]: IcfgTransformer initialized [2018-01-30 02:43:29,527 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:43:29" (1/1) ... [2018-01-30 02:43:29,529 WARN L213 ansformationObserver]: HeapSeparator: input icfg has no '#valid' array -- returning unchanged Icfg! [2018-01-30 02:43:29,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 30.01 02:43:29 BasicIcfg [2018-01-30 02:43:29,538 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2018-01-30 02:43:29,539 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-30 02:43:29,539 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-30 02:43:29,540 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-30 02:43:29,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.01 02:43:28" (1/4) ... [2018-01-30 02:43:29,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bd773be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 02:43:29, skipping insertion in model container [2018-01-30 02:43:29,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:43:29" (2/4) ... [2018-01-30 02:43:29,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bd773be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 02:43:29, skipping insertion in model container [2018-01-30 02:43:29,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:43:29" (3/4) ... [2018-01-30 02:43:29,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bd773be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.01 02:43:29, skipping insertion in model container [2018-01-30 02:43:29,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 30.01 02:43:29" (4/4) ... [2018-01-30 02:43:29,543 INFO L107 eAbstractionObserver]: Analyzing ICFG standard_copy7_false-unreach-call_ground.ileft_unchanged_by_heapseparator [2018-01-30 02:43:29,547 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-30 02:43:29,552 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-01-30 02:43:29,576 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-30 02:43:29,577 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-30 02:43:29,577 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-30 02:43:29,577 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-30 02:43:29,577 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-30 02:43:29,577 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-30 02:43:29,577 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-30 02:43:29,577 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-30 02:43:29,577 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-30 02:43:29,587 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states. [2018-01-30 02:43:29,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-01-30 02:43:29,591 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:43:29,592 INFO L350 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] [2018-01-30 02:43:29,592 INFO L371 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:43:29,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1090345719, now seen corresponding path program 1 times [2018-01-30 02:43:29,595 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:43:29,596 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:43:29,625 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:29,626 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:43:29,626 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:29,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:43:29,647 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:43:29,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:43:29,679 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-30 02:43:29,680 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-30 02:43:29,681 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-30 02:43:29,689 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-30 02:43:29,689 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-30 02:43:29,690 INFO L87 Difference]: Start difference. First operand 94 states. Second operand 2 states. [2018-01-30 02:43:29,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:43:29,707 INFO L93 Difference]: Finished difference Result 163 states and 197 transitions. [2018-01-30 02:43:29,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-30 02:43:29,708 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 38 [2018-01-30 02:43:29,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:43:29,713 INFO L225 Difference]: With dead ends: 163 [2018-01-30 02:43:29,714 INFO L226 Difference]: Without dead ends: 89 [2018-01-30 02:43:29,716 INFO L553 BasicCegarLoop]: 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 [2018-01-30 02:43:29,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-01-30 02:43:29,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-01-30 02:43:29,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-01-30 02:43:29,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 98 transitions. [2018-01-30 02:43:29,739 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 98 transitions. Word has length 38 [2018-01-30 02:43:29,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:43:29,740 INFO L432 AbstractCegarLoop]: Abstraction has 89 states and 98 transitions. [2018-01-30 02:43:29,740 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-30 02:43:29,740 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 98 transitions. [2018-01-30 02:43:29,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-01-30 02:43:29,741 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:43:29,741 INFO L350 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] [2018-01-30 02:43:29,741 INFO L371 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:43:29,741 INFO L82 PathProgramCache]: Analyzing trace with hash -404605587, now seen corresponding path program 1 times [2018-01-30 02:43:29,741 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:43:29,741 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:43:29,742 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:29,742 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:43:29,742 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:29,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:43:29,749 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:43:29,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-30 02:43:29,834 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-30 02:43:29,834 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-30 02:43:29,835 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-30 02:43:29,835 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-30 02:43:29,835 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-30 02:43:29,836 INFO L87 Difference]: Start difference. First operand 89 states and 98 transitions. Second operand 3 states. [2018-01-30 02:43:29,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:43:29,912 INFO L93 Difference]: Finished difference Result 163 states and 181 transitions. [2018-01-30 02:43:29,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-30 02:43:29,912 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2018-01-30 02:43:29,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:43:29,914 INFO L225 Difference]: With dead ends: 163 [2018-01-30 02:43:29,914 INFO L226 Difference]: Without dead ends: 99 [2018-01-30 02:43:29,915 INFO L553 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 [2018-01-30 02:43:29,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-01-30 02:43:29,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 91. [2018-01-30 02:43:29,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-01-30 02:43:29,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2018-01-30 02:43:29,920 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 46 [2018-01-30 02:43:29,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:43:29,920 INFO L432 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2018-01-30 02:43:29,920 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-30 02:43:29,920 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2018-01-30 02:43:29,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-01-30 02:43:29,921 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:43:29,921 INFO L350 BasicCegarLoop]: trace histogram [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] [2018-01-30 02:43:29,921 INFO L371 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:43:29,921 INFO L82 PathProgramCache]: Analyzing trace with hash 91249142, now seen corresponding path program 1 times [2018-01-30 02:43:29,921 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:43:29,922 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:43:29,922 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:29,922 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:43:29,922 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:29,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:43:29,935 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:43:29,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-30 02:43:29,991 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-30 02:43:29,991 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-30 02:43:29,991 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-30 02:43:29,991 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-30 02:43:29,991 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-30 02:43:29,992 INFO L87 Difference]: Start difference. First operand 91 states and 100 transitions. Second operand 3 states. [2018-01-30 02:43:30,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:43:30,241 INFO L93 Difference]: Finished difference Result 182 states and 205 transitions. [2018-01-30 02:43:30,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-30 02:43:30,242 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2018-01-30 02:43:30,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:43:30,242 INFO L225 Difference]: With dead ends: 182 [2018-01-30 02:43:30,242 INFO L226 Difference]: Without dead ends: 126 [2018-01-30 02:43:30,243 INFO L553 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 [2018-01-30 02:43:30,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-01-30 02:43:30,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 105. [2018-01-30 02:43:30,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-01-30 02:43:30,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 114 transitions. [2018-01-30 02:43:30,247 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 114 transitions. Word has length 57 [2018-01-30 02:43:30,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:43:30,248 INFO L432 AbstractCegarLoop]: Abstraction has 105 states and 114 transitions. [2018-01-30 02:43:30,248 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-30 02:43:30,248 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 114 transitions. [2018-01-30 02:43:30,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-01-30 02:43:30,249 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:43:30,249 INFO L350 BasicCegarLoop]: trace histogram [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] [2018-01-30 02:43:30,249 INFO L371 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:43:30,249 INFO L82 PathProgramCache]: Analyzing trace with hash -841692542, now seen corresponding path program 1 times [2018-01-30 02:43:30,250 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:43:30,250 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:43:30,250 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:30,250 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:43:30,250 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:30,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:43:30,268 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:43:30,368 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-01-30 02:43:30,369 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:43:30,369 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:43:30,385 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:43:30,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:43:30,417 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:43:30,434 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-01-30 02:43:30,452 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:43:30,452 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-01-30 02:43:30,452 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-30 02:43:30,452 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-30 02:43:30,453 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-01-30 02:43:30,453 INFO L87 Difference]: Start difference. First operand 105 states and 114 transitions. Second operand 5 states. [2018-01-30 02:43:30,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:43:30,562 INFO L93 Difference]: Finished difference Result 202 states and 220 transitions. [2018-01-30 02:43:30,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-30 02:43:30,563 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2018-01-30 02:43:30,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:43:30,563 INFO L225 Difference]: With dead ends: 202 [2018-01-30 02:43:30,563 INFO L226 Difference]: Without dead ends: 124 [2018-01-30 02:43:30,564 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-01-30 02:43:30,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-01-30 02:43:30,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 116. [2018-01-30 02:43:30,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2018-01-30 02:43:30,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 125 transitions. [2018-01-30 02:43:30,569 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 125 transitions. Word has length 99 [2018-01-30 02:43:30,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:43:30,569 INFO L432 AbstractCegarLoop]: Abstraction has 116 states and 125 transitions. [2018-01-30 02:43:30,569 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-30 02:43:30,569 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 125 transitions. [2018-01-30 02:43:30,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-01-30 02:43:30,570 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:43:30,570 INFO L350 BasicCegarLoop]: trace histogram [3, 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] [2018-01-30 02:43:30,570 INFO L371 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:43:30,570 INFO L82 PathProgramCache]: Analyzing trace with hash -477369959, now seen corresponding path program 2 times [2018-01-30 02:43:30,570 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:43:30,570 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:43:30,571 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:30,571 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:43:30,572 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:30,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:43:30,588 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:43:30,791 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-01-30 02:43:30,791 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:43:30,791 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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) [2018-01-30 02:43:30,797 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:43:30,812 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:30,830 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:30,845 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:43:30,848 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:43:31,192 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-01-30 02:43:31,209 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:43:31,209 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2018-01-30 02:43:31,210 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-30 02:43:31,210 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-30 02:43:31,210 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-01-30 02:43:31,211 INFO L87 Difference]: Start difference. First operand 116 states and 125 transitions. Second operand 10 states. [2018-01-30 02:43:31,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:43:31,656 INFO L93 Difference]: Finished difference Result 240 states and 259 transitions. [2018-01-30 02:43:31,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-30 02:43:31,656 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 110 [2018-01-30 02:43:31,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:43:31,657 INFO L225 Difference]: With dead ends: 240 [2018-01-30 02:43:31,657 INFO L226 Difference]: Without dead ends: 162 [2018-01-30 02:43:31,658 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2018-01-30 02:43:31,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2018-01-30 02:43:31,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 133. [2018-01-30 02:43:31,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-01-30 02:43:31,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 142 transitions. [2018-01-30 02:43:31,663 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 142 transitions. Word has length 110 [2018-01-30 02:43:31,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:43:31,664 INFO L432 AbstractCegarLoop]: Abstraction has 133 states and 142 transitions. [2018-01-30 02:43:31,664 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-30 02:43:31,664 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 142 transitions. [2018-01-30 02:43:31,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-01-30 02:43:31,665 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:43:31,665 INFO L350 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-01-30 02:43:31,665 INFO L371 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:43:31,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1922090447, now seen corresponding path program 3 times [2018-01-30 02:43:31,666 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:43:31,666 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:43:31,667 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:31,667 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:43:31,667 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:31,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:43:31,681 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:43:31,734 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2018-01-30 02:43:31,734 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:43:31,734 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-30 02:43:31,743 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 02:43:31,751 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:43:31,762 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:43:31,765 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:43:31,767 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:43:31,775 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2018-01-30 02:43:31,791 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:43:31,792 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-01-30 02:43:31,792 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-30 02:43:31,792 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-30 02:43:31,792 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-01-30 02:43:31,792 INFO L87 Difference]: Start difference. First operand 133 states and 142 transitions. Second operand 5 states. [2018-01-30 02:43:31,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:43:31,927 INFO L93 Difference]: Finished difference Result 216 states and 232 transitions. [2018-01-30 02:43:31,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-30 02:43:31,928 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2018-01-30 02:43:31,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:43:31,932 INFO L225 Difference]: With dead ends: 216 [2018-01-30 02:43:31,932 INFO L226 Difference]: Without dead ends: 157 [2018-01-30 02:43:31,933 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-01-30 02:43:31,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-01-30 02:43:31,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 139. [2018-01-30 02:43:31,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-01-30 02:43:31,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 148 transitions. [2018-01-30 02:43:31,944 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 148 transitions. Word has length 127 [2018-01-30 02:43:31,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:43:31,944 INFO L432 AbstractCegarLoop]: Abstraction has 139 states and 148 transitions. [2018-01-30 02:43:31,944 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-30 02:43:31,944 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 148 transitions. [2018-01-30 02:43:31,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-01-30 02:43:31,945 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:43:31,945 INFO L350 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-01-30 02:43:31,945 INFO L371 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:43:31,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1355619552, now seen corresponding path program 4 times [2018-01-30 02:43:31,945 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:43:31,946 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:43:31,946 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:31,952 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:43:31,952 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:31,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:43:31,973 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:43:32,055 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-01-30 02:43:32,055 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:43:32,055 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-30 02:43:32,060 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 02:43:32,085 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:43:32,087 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:43:32,164 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-01-30 02:43:32,181 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:43:32,181 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9] total 12 [2018-01-30 02:43:32,181 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-30 02:43:32,182 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-30 02:43:32,182 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2018-01-30 02:43:32,182 INFO L87 Difference]: Start difference. First operand 139 states and 148 transitions. Second operand 12 states. [2018-01-30 02:43:32,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:43:32,431 INFO L93 Difference]: Finished difference Result 269 states and 288 transitions. [2018-01-30 02:43:32,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-01-30 02:43:32,432 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 133 [2018-01-30 02:43:32,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:43:32,432 INFO L225 Difference]: With dead ends: 269 [2018-01-30 02:43:32,432 INFO L226 Difference]: Without dead ends: 179 [2018-01-30 02:43:32,433 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2018-01-30 02:43:32,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-01-30 02:43:32,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 156. [2018-01-30 02:43:32,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-01-30 02:43:32,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 165 transitions. [2018-01-30 02:43:32,436 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 165 transitions. Word has length 133 [2018-01-30 02:43:32,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:43:32,437 INFO L432 AbstractCegarLoop]: Abstraction has 156 states and 165 transitions. [2018-01-30 02:43:32,437 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-30 02:43:32,437 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 165 transitions. [2018-01-30 02:43:32,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-01-30 02:43:32,438 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:43:32,438 INFO L350 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2018-01-30 02:43:32,438 INFO L371 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:43:32,438 INFO L82 PathProgramCache]: Analyzing trace with hash -948726746, now seen corresponding path program 5 times [2018-01-30 02:43:32,438 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:43:32,438 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:43:32,439 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:32,439 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:43:32,439 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:32,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:43:32,450 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:43:32,595 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2018-01-30 02:43:32,596 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:43:32,596 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/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 [2018-01-30 02:43:32,601 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 02:43:32,612 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:32,622 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:32,637 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:32,652 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:32,668 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:32,682 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:43:32,684 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:43:32,782 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2018-01-30 02:43:32,799 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:43:32,799 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-01-30 02:43:32,799 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-30 02:43:32,799 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-30 02:43:32,799 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-30 02:43:32,799 INFO L87 Difference]: Start difference. First operand 156 states and 165 transitions. Second operand 6 states. [2018-01-30 02:43:32,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:43:32,988 INFO L93 Difference]: Finished difference Result 221 states and 236 transitions. [2018-01-30 02:43:32,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-30 02:43:32,998 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 150 [2018-01-30 02:43:32,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:43:32,999 INFO L225 Difference]: With dead ends: 221 [2018-01-30 02:43:32,999 INFO L226 Difference]: Without dead ends: 180 [2018-01-30 02:43:33,000 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-01-30 02:43:33,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2018-01-30 02:43:33,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 168. [2018-01-30 02:43:33,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2018-01-30 02:43:33,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 177 transitions. [2018-01-30 02:43:33,008 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 177 transitions. Word has length 150 [2018-01-30 02:43:33,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:43:33,008 INFO L432 AbstractCegarLoop]: Abstraction has 168 states and 177 transitions. [2018-01-30 02:43:33,009 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-30 02:43:33,009 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 177 transitions. [2018-01-30 02:43:33,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-01-30 02:43:33,010 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:43:33,010 INFO L350 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:43:33,010 INFO L371 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:43:33,010 INFO L82 PathProgramCache]: Analyzing trace with hash 881504108, now seen corresponding path program 6 times [2018-01-30 02:43:33,010 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:43:33,010 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:43:33,011 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:33,011 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:43:33,011 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:33,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:43:33,023 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:43:33,113 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2018-01-30 02:43:33,114 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:43:33,114 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:43:33,119 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 02:43:33,131 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:43:33,133 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:43:33,148 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:43:33,149 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:43:33,155 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:43:33,173 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2018-01-30 02:43:33,189 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:43:33,190 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-01-30 02:43:33,190 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-30 02:43:33,190 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-30 02:43:33,190 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-30 02:43:33,190 INFO L87 Difference]: Start difference. First operand 168 states and 177 transitions. Second operand 6 states. [2018-01-30 02:43:33,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:43:33,276 INFO L93 Difference]: Finished difference Result 224 states and 238 transitions. [2018-01-30 02:43:33,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-30 02:43:33,277 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 162 [2018-01-30 02:43:33,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:43:33,277 INFO L225 Difference]: With dead ends: 224 [2018-01-30 02:43:33,278 INFO L226 Difference]: Without dead ends: 186 [2018-01-30 02:43:33,278 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-01-30 02:43:33,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-01-30 02:43:33,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 180. [2018-01-30 02:43:33,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2018-01-30 02:43:33,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 189 transitions. [2018-01-30 02:43:33,281 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 189 transitions. Word has length 162 [2018-01-30 02:43:33,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:43:33,282 INFO L432 AbstractCegarLoop]: Abstraction has 180 states and 189 transitions. [2018-01-30 02:43:33,282 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-30 02:43:33,282 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 189 transitions. [2018-01-30 02:43:33,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-01-30 02:43:33,283 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:43:33,283 INFO L350 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 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] [2018-01-30 02:43:33,283 INFO L371 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:43:33,283 INFO L82 PathProgramCache]: Analyzing trace with hash -930906043, now seen corresponding path program 7 times [2018-01-30 02:43:33,283 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:43:33,283 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:43:33,284 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:33,284 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:43:33,284 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:33,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:43:33,295 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:43:33,348 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2018-01-30 02:43:33,348 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:43:33,348 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:43:33,353 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:43:33,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:43:33,373 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:43:33,431 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-01-30 02:43:33,448 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:43:33,448 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11] total 16 [2018-01-30 02:43:33,448 INFO L409 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-01-30 02:43:33,448 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-01-30 02:43:33,449 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2018-01-30 02:43:33,449 INFO L87 Difference]: Start difference. First operand 180 states and 189 transitions. Second operand 16 states. [2018-01-30 02:43:33,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:43:33,805 INFO L93 Difference]: Finished difference Result 328 states and 347 transitions. [2018-01-30 02:43:33,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-01-30 02:43:33,805 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 174 [2018-01-30 02:43:33,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:43:33,806 INFO L225 Difference]: With dead ends: 328 [2018-01-30 02:43:33,806 INFO L226 Difference]: Without dead ends: 208 [2018-01-30 02:43:33,806 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=591, Unknown=0, NotChecked=0, Total=756 [2018-01-30 02:43:33,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2018-01-30 02:43:33,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 197. [2018-01-30 02:43:33,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-01-30 02:43:33,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 206 transitions. [2018-01-30 02:43:33,813 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 206 transitions. Word has length 174 [2018-01-30 02:43:33,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:43:33,813 INFO L432 AbstractCegarLoop]: Abstraction has 197 states and 206 transitions. [2018-01-30 02:43:33,814 INFO L433 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-01-30 02:43:33,814 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 206 transitions. [2018-01-30 02:43:33,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-01-30 02:43:33,815 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:43:33,815 INFO L350 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 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] [2018-01-30 02:43:33,815 INFO L371 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:43:33,822 INFO L82 PathProgramCache]: Analyzing trace with hash -442141637, now seen corresponding path program 8 times [2018-01-30 02:43:33,822 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:43:33,822 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:43:33,822 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:33,822 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:43:33,822 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:33,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:43:33,835 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:43:33,919 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2018-01-30 02:43:33,919 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:43:33,919 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:43:33,924 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 02:43:33,931 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:33,940 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:33,942 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:43:33,944 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:43:34,057 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-01-30 02:43:34,075 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:43:34,075 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 13] total 18 [2018-01-30 02:43:34,075 INFO L409 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-01-30 02:43:34,076 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-01-30 02:43:34,076 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2018-01-30 02:43:34,076 INFO L87 Difference]: Start difference. First operand 197 states and 206 transitions. Second operand 18 states. [2018-01-30 02:43:34,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:43:34,553 INFO L93 Difference]: Finished difference Result 351 states and 370 transitions. [2018-01-30 02:43:34,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-01-30 02:43:34,553 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 191 [2018-01-30 02:43:34,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:43:34,554 INFO L225 Difference]: With dead ends: 351 [2018-01-30 02:43:34,554 INFO L226 Difference]: Without dead ends: 225 [2018-01-30 02:43:34,554 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=220, Invalid=772, Unknown=0, NotChecked=0, Total=992 [2018-01-30 02:43:34,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-01-30 02:43:34,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 214. [2018-01-30 02:43:34,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-01-30 02:43:34,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 223 transitions. [2018-01-30 02:43:34,557 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 223 transitions. Word has length 191 [2018-01-30 02:43:34,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:43:34,558 INFO L432 AbstractCegarLoop]: Abstraction has 214 states and 223 transitions. [2018-01-30 02:43:34,558 INFO L433 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-01-30 02:43:34,558 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 223 transitions. [2018-01-30 02:43:34,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-01-30 02:43:34,559 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:43:34,559 INFO L350 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:43:34,560 INFO L371 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:43:34,560 INFO L82 PathProgramCache]: Analyzing trace with hash 297433699, now seen corresponding path program 9 times [2018-01-30 02:43:34,560 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:43:34,560 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:43:34,560 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:34,560 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:43:34,560 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:34,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:43:34,579 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:43:34,892 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2018-01-30 02:43:34,892 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:43:34,892 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:43:34,897 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 02:43:34,912 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:43:34,928 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:43:34,940 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:43:34,940 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:43:34,942 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:43:34,968 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2018-01-30 02:43:34,998 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:43:34,998 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-01-30 02:43:34,999 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-30 02:43:34,999 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-30 02:43:34,999 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-01-30 02:43:34,999 INFO L87 Difference]: Start difference. First operand 214 states and 223 transitions. Second operand 7 states. [2018-01-30 02:43:35,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:43:35,129 INFO L93 Difference]: Finished difference Result 297 states and 312 transitions. [2018-01-30 02:43:35,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-30 02:43:35,130 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 208 [2018-01-30 02:43:35,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:43:35,131 INFO L225 Difference]: With dead ends: 297 [2018-01-30 02:43:35,131 INFO L226 Difference]: Without dead ends: 223 [2018-01-30 02:43:35,131 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2018-01-30 02:43:35,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-01-30 02:43:35,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 220. [2018-01-30 02:43:35,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2018-01-30 02:43:35,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 229 transitions. [2018-01-30 02:43:35,135 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 229 transitions. Word has length 208 [2018-01-30 02:43:35,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:43:35,135 INFO L432 AbstractCegarLoop]: Abstraction has 220 states and 229 transitions. [2018-01-30 02:43:35,135 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-30 02:43:35,135 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 229 transitions. [2018-01-30 02:43:35,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-01-30 02:43:35,136 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:43:35,136 INFO L350 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:43:35,136 INFO L371 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:43:35,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1920860782, now seen corresponding path program 10 times [2018-01-30 02:43:35,136 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:43:35,136 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:43:35,137 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:35,137 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:43:35,137 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:35,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:43:35,146 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:43:35,288 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2018-01-30 02:43:35,288 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:43:35,289 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:43:35,294 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 02:43:35,338 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:43:35,341 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:43:35,435 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 177 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2018-01-30 02:43:35,452 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:43:35,452 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 15] total 22 [2018-01-30 02:43:35,453 INFO L409 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-01-30 02:43:35,453 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-01-30 02:43:35,453 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2018-01-30 02:43:35,453 INFO L87 Difference]: Start difference. First operand 220 states and 229 transitions. Second operand 22 states. [2018-01-30 02:43:35,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:43:35,883 INFO L93 Difference]: Finished difference Result 386 states and 405 transitions. [2018-01-30 02:43:35,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-01-30 02:43:35,888 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 214 [2018-01-30 02:43:35,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:43:35,889 INFO L225 Difference]: With dead ends: 386 [2018-01-30 02:43:35,889 INFO L226 Difference]: Without dead ends: 248 [2018-01-30 02:43:35,889 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=320, Invalid=1240, Unknown=0, NotChecked=0, Total=1560 [2018-01-30 02:43:35,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-01-30 02:43:35,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 237. [2018-01-30 02:43:35,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2018-01-30 02:43:35,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 246 transitions. [2018-01-30 02:43:35,892 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 246 transitions. Word has length 214 [2018-01-30 02:43:35,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:43:35,892 INFO L432 AbstractCegarLoop]: Abstraction has 237 states and 246 transitions. [2018-01-30 02:43:35,892 INFO L433 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-01-30 02:43:35,892 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 246 transitions. [2018-01-30 02:43:35,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2018-01-30 02:43:35,893 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:43:35,893 INFO L350 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:43:35,893 INFO L371 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:43:35,893 INFO L82 PathProgramCache]: Analyzing trace with hash 981310280, now seen corresponding path program 11 times [2018-01-30 02:43:35,894 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:43:35,894 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:43:35,894 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:35,894 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:43:35,894 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:35,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:43:35,903 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:43:36,185 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2018-01-30 02:43:36,185 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:43:36,186 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:43:36,195 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 02:43:36,203 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:36,205 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:36,206 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:36,208 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:36,211 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:36,215 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:36,220 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:36,227 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:36,228 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:43:36,230 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:43:36,283 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 353 trivial. 0 not checked. [2018-01-30 02:43:36,301 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:43:36,301 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 11 [2018-01-30 02:43:36,302 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-30 02:43:36,302 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-30 02:43:36,302 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-01-30 02:43:36,302 INFO L87 Difference]: Start difference. First operand 237 states and 246 transitions. Second operand 11 states. [2018-01-30 02:43:36,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:43:36,989 INFO L93 Difference]: Finished difference Result 350 states and 367 transitions. [2018-01-30 02:43:36,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-01-30 02:43:36,990 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 231 [2018-01-30 02:43:36,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:43:36,991 INFO L225 Difference]: With dead ends: 350 [2018-01-30 02:43:36,991 INFO L226 Difference]: Without dead ends: 255 [2018-01-30 02:43:36,991 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2018-01-30 02:43:36,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-01-30 02:43:36,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 249. [2018-01-30 02:43:36,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-01-30 02:43:36,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 258 transitions. [2018-01-30 02:43:36,994 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 258 transitions. Word has length 231 [2018-01-30 02:43:36,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:43:36,994 INFO L432 AbstractCegarLoop]: Abstraction has 249 states and 258 transitions. [2018-01-30 02:43:36,994 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-30 02:43:36,994 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 258 transitions. [2018-01-30 02:43:36,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-01-30 02:43:36,998 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:43:36,998 INFO L350 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-01-30 02:43:36,998 INFO L371 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:43:36,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1289592461, now seen corresponding path program 12 times [2018-01-30 02:43:36,999 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:43:36,999 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:43:36,999 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:36,999 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:43:36,999 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:37,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:43:37,010 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:43:37,169 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2018-01-30 02:43:37,169 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:43:37,169 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:43:37,174 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 02:43:37,190 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:43:37,191 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:43:37,195 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:43:37,197 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:43:37,201 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:43:37,202 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:43:37,204 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:43:37,228 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2018-01-30 02:43:37,245 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:43:37,245 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2018-01-30 02:43:37,246 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-30 02:43:37,246 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-30 02:43:37,246 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-01-30 02:43:37,246 INFO L87 Difference]: Start difference. First operand 249 states and 258 transitions. Second operand 9 states. [2018-01-30 02:43:37,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:43:37,393 INFO L93 Difference]: Finished difference Result 332 states and 347 transitions. [2018-01-30 02:43:37,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-01-30 02:43:37,393 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 243 [2018-01-30 02:43:37,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:43:37,394 INFO L225 Difference]: With dead ends: 332 [2018-01-30 02:43:37,394 INFO L226 Difference]: Without dead ends: 267 [2018-01-30 02:43:37,395 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2018-01-30 02:43:37,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-01-30 02:43:37,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 261. [2018-01-30 02:43:37,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2018-01-30 02:43:37,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 270 transitions. [2018-01-30 02:43:37,398 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 270 transitions. Word has length 243 [2018-01-30 02:43:37,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:43:37,398 INFO L432 AbstractCegarLoop]: Abstraction has 261 states and 270 transitions. [2018-01-30 02:43:37,398 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-30 02:43:37,398 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 270 transitions. [2018-01-30 02:43:37,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2018-01-30 02:43:37,399 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:43:37,399 INFO L350 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-01-30 02:43:37,399 INFO L371 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:43:37,399 INFO L82 PathProgramCache]: Analyzing trace with hash 2077249163, now seen corresponding path program 13 times [2018-01-30 02:43:37,400 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:43:37,400 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:43:37,400 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:37,400 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:43:37,400 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:37,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:43:37,409 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:43:37,836 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2018-01-30 02:43:37,836 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:43:37,836 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-01-30 02:43:37,842 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:43:37,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:43:37,874 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:43:38,140 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2018-01-30 02:43:38,157 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:43:38,158 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 17] total 22 [2018-01-30 02:43:38,158 INFO L409 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-01-30 02:43:38,158 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-01-30 02:43:38,158 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2018-01-30 02:43:38,158 INFO L87 Difference]: Start difference. First operand 261 states and 270 transitions. Second operand 22 states. [2018-01-30 02:43:38,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:43:38,516 INFO L93 Difference]: Finished difference Result 457 states and 476 transitions. [2018-01-30 02:43:38,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-01-30 02:43:38,517 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 255 [2018-01-30 02:43:38,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:43:38,518 INFO L225 Difference]: With dead ends: 457 [2018-01-30 02:43:38,518 INFO L226 Difference]: Without dead ends: 289 [2018-01-30 02:43:38,518 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=360, Invalid=1200, Unknown=0, NotChecked=0, Total=1560 [2018-01-30 02:43:38,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2018-01-30 02:43:38,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 278. [2018-01-30 02:43:38,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2018-01-30 02:43:38,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 287 transitions. [2018-01-30 02:43:38,521 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 287 transitions. Word has length 255 [2018-01-30 02:43:38,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:43:38,521 INFO L432 AbstractCegarLoop]: Abstraction has 278 states and 287 transitions. [2018-01-30 02:43:38,521 INFO L433 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-01-30 02:43:38,521 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 287 transitions. [2018-01-30 02:43:38,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-01-30 02:43:38,522 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:43:38,522 INFO L350 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2018-01-30 02:43:38,522 INFO L371 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:43:38,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1208181007, now seen corresponding path program 14 times [2018-01-30 02:43:38,523 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:43:38,523 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:43:38,523 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:38,523 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:43:38,523 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:38,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:43:38,532 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:43:38,905 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2018-01-30 02:43:38,905 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:43:38,905 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:43:38,910 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 02:43:38,918 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:38,931 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:38,934 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:43:38,936 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:43:39,083 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2018-01-30 02:43:39,100 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:43:39,100 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 19] total 26 [2018-01-30 02:43:39,100 INFO L409 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-01-30 02:43:39,100 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-01-30 02:43:39,101 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=528, Unknown=0, NotChecked=0, Total=650 [2018-01-30 02:43:39,101 INFO L87 Difference]: Start difference. First operand 278 states and 287 transitions. Second operand 26 states. [2018-01-30 02:43:39,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:43:39,483 INFO L93 Difference]: Finished difference Result 480 states and 499 transitions. [2018-01-30 02:43:39,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-01-30 02:43:39,495 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 272 [2018-01-30 02:43:39,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:43:39,496 INFO L225 Difference]: With dead ends: 480 [2018-01-30 02:43:39,496 INFO L226 Difference]: Without dead ends: 306 [2018-01-30 02:43:39,496 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=480, Invalid=1776, Unknown=0, NotChecked=0, Total=2256 [2018-01-30 02:43:39,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2018-01-30 02:43:39,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 295. [2018-01-30 02:43:39,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2018-01-30 02:43:39,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 304 transitions. [2018-01-30 02:43:39,501 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 304 transitions. Word has length 272 [2018-01-30 02:43:39,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:43:39,501 INFO L432 AbstractCegarLoop]: Abstraction has 295 states and 304 transitions. [2018-01-30 02:43:39,501 INFO L433 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-01-30 02:43:39,501 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 304 transitions. [2018-01-30 02:43:39,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2018-01-30 02:43:39,502 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:43:39,502 INFO L350 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 5, 5, 5, 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, 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] [2018-01-30 02:43:39,502 INFO L371 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:43:39,503 INFO L82 PathProgramCache]: Analyzing trace with hash 724182725, now seen corresponding path program 15 times [2018-01-30 02:43:39,503 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:43:39,503 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:43:39,508 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:39,508 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:43:39,508 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:39,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:43:39,519 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:43:40,188 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 618 trivial. 0 not checked. [2018-01-30 02:43:40,189 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:43:40,189 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-01-30 02:43:40,194 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:43:40,204 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:43:40,218 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:43:40,224 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:43:40,230 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:43:40,231 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:43:40,233 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:43:40,257 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 618 trivial. 0 not checked. [2018-01-30 02:43:40,274 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:43:40,274 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-01-30 02:43:40,275 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-30 02:43:40,275 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-30 02:43:40,275 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-01-30 02:43:40,275 INFO L87 Difference]: Start difference. First operand 295 states and 304 transitions. Second operand 9 states. [2018-01-30 02:43:40,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:43:40,444 INFO L93 Difference]: Finished difference Result 318 states and 329 transitions. [2018-01-30 02:43:40,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-30 02:43:40,444 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 289 [2018-01-30 02:43:40,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:43:40,445 INFO L225 Difference]: With dead ends: 318 [2018-01-30 02:43:40,445 INFO L226 Difference]: Without dead ends: 304 [2018-01-30 02:43:40,445 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2018-01-30 02:43:40,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2018-01-30 02:43:40,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 301. [2018-01-30 02:43:40,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2018-01-30 02:43:40,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 310 transitions. [2018-01-30 02:43:40,449 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 310 transitions. Word has length 289 [2018-01-30 02:43:40,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:43:40,449 INFO L432 AbstractCegarLoop]: Abstraction has 301 states and 310 transitions. [2018-01-30 02:43:40,449 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-30 02:43:40,449 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 310 transitions. [2018-01-30 02:43:40,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2018-01-30 02:43:40,450 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:43:40,450 INFO L350 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 5, 5, 5, 5, 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, 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] [2018-01-30 02:43:40,450 INFO L371 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:43:40,450 INFO L82 PathProgramCache]: Analyzing trace with hash -975945231, now seen corresponding path program 16 times [2018-01-30 02:43:40,450 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:43:40,450 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:43:40,451 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:40,451 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:43:40,451 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:40,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:43:40,460 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:43:40,724 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 618 trivial. 0 not checked. [2018-01-30 02:43:40,724 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:43:40,724 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:43:40,729 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 02:43:40,763 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:43:40,766 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:43:40,972 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 0 proven. 414 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2018-01-30 02:43:40,989 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:43:40,989 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 21] total 30 [2018-01-30 02:43:40,989 INFO L409 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-01-30 02:43:40,990 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-01-30 02:43:40,990 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=716, Unknown=0, NotChecked=0, Total=870 [2018-01-30 02:43:40,990 INFO L87 Difference]: Start difference. First operand 301 states and 310 transitions. Second operand 30 states. [2018-01-30 02:43:42,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:43:42,817 INFO L93 Difference]: Finished difference Result 515 states and 534 transitions. [2018-01-30 02:43:42,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-01-30 02:43:42,817 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 295 [2018-01-30 02:43:42,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:43:42,818 INFO L225 Difference]: With dead ends: 515 [2018-01-30 02:43:42,818 INFO L226 Difference]: Without dead ends: 329 [2018-01-30 02:43:42,819 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=620, Invalid=2460, Unknown=0, NotChecked=0, Total=3080 [2018-01-30 02:43:42,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2018-01-30 02:43:42,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 318. [2018-01-30 02:43:42,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2018-01-30 02:43:42,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 327 transitions. [2018-01-30 02:43:42,822 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 327 transitions. Word has length 295 [2018-01-30 02:43:42,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:43:42,822 INFO L432 AbstractCegarLoop]: Abstraction has 318 states and 327 transitions. [2018-01-30 02:43:42,822 INFO L433 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-01-30 02:43:42,822 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 327 transitions. [2018-01-30 02:43:42,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2018-01-30 02:43:42,823 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:43:42,824 INFO L350 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2018-01-30 02:43:42,824 INFO L371 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:43:42,824 INFO L82 PathProgramCache]: Analyzing trace with hash -971107724, now seen corresponding path program 17 times [2018-01-30 02:43:42,824 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:43:42,824 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:43:42,824 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:42,824 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:43:42,824 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:42,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:43:42,834 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:43:43,021 INFO L134 CoverageAnalysis]: Checked inductivity of 789 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 765 trivial. 0 not checked. [2018-01-30 02:43:43,022 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:43:43,022 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:43:43,026 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 02:43:43,034 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:43,036 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:43,037 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:43,038 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:43,040 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:43,042 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:43,045 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:43,049 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:43,055 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:43,061 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:43,073 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:43,074 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:43:43,077 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:43:43,104 INFO L134 CoverageAnalysis]: Checked inductivity of 789 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 765 trivial. 0 not checked. [2018-01-30 02:43:43,122 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:43:43,122 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-01-30 02:43:43,122 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-30 02:43:43,123 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-30 02:43:43,123 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-01-30 02:43:43,123 INFO L87 Difference]: Start difference. First operand 318 states and 327 transitions. Second operand 9 states. [2018-01-30 02:43:43,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:43:43,227 INFO L93 Difference]: Finished difference Result 374 states and 386 transitions. [2018-01-30 02:43:43,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-30 02:43:43,228 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 312 [2018-01-30 02:43:43,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:43:43,229 INFO L225 Difference]: With dead ends: 374 [2018-01-30 02:43:43,229 INFO L226 Difference]: Without dead ends: 327 [2018-01-30 02:43:43,229 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2018-01-30 02:43:43,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2018-01-30 02:43:43,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 324. [2018-01-30 02:43:43,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2018-01-30 02:43:43,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 333 transitions. [2018-01-30 02:43:43,232 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 333 transitions. Word has length 312 [2018-01-30 02:43:43,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:43:43,232 INFO L432 AbstractCegarLoop]: Abstraction has 324 states and 333 transitions. [2018-01-30 02:43:43,232 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-30 02:43:43,232 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 333 transitions. [2018-01-30 02:43:43,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-01-30 02:43:43,233 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:43:43,233 INFO L350 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-01-30 02:43:43,233 INFO L371 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:43:43,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1379189272, now seen corresponding path program 18 times [2018-01-30 02:43:43,233 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:43:43,233 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:43:43,234 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:43,234 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:43:43,234 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:43,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:43:43,244 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:43:43,840 INFO L134 CoverageAnalysis]: Checked inductivity of 809 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 739 trivial. 0 not checked. [2018-01-30 02:43:43,840 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:43:43,840 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:43:43,844 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 02:43:43,857 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:43:43,866 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:43:43,878 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:43:43,887 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:43:43,899 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:43:43,907 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:43:43,921 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:43:43,928 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:43:43,930 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:43:44,315 INFO L134 CoverageAnalysis]: Checked inductivity of 809 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 785 trivial. 0 not checked. [2018-01-30 02:43:44,332 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:43:44,332 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 16 [2018-01-30 02:43:44,333 INFO L409 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-01-30 02:43:44,333 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-01-30 02:43:44,333 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2018-01-30 02:43:44,333 INFO L87 Difference]: Start difference. First operand 324 states and 333 transitions. Second operand 16 states. [2018-01-30 02:43:44,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:43:44,577 INFO L93 Difference]: Finished difference Result 464 states and 480 transitions. [2018-01-30 02:43:44,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-01-30 02:43:44,578 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 318 [2018-01-30 02:43:44,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:43:44,584 INFO L225 Difference]: With dead ends: 464 [2018-01-30 02:43:44,585 INFO L226 Difference]: Without dead ends: 342 [2018-01-30 02:43:44,585 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=253, Invalid=739, Unknown=0, NotChecked=0, Total=992 [2018-01-30 02:43:44,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2018-01-30 02:43:44,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 336. [2018-01-30 02:43:44,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2018-01-30 02:43:44,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 345 transitions. [2018-01-30 02:43:44,588 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 345 transitions. Word has length 318 [2018-01-30 02:43:44,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:43:44,589 INFO L432 AbstractCegarLoop]: Abstraction has 336 states and 345 transitions. [2018-01-30 02:43:44,589 INFO L433 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-01-30 02:43:44,589 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 345 transitions. [2018-01-30 02:43:44,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-01-30 02:43:44,590 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:43:44,590 INFO L350 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:43:44,590 INFO L371 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:43:44,590 INFO L82 PathProgramCache]: Analyzing trace with hash -863922429, now seen corresponding path program 19 times [2018-01-30 02:43:44,590 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:43:44,590 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:43:44,591 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:44,591 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:43:44,591 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:44,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:43:44,615 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:43:44,810 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 817 trivial. 0 not checked. [2018-01-30 02:43:44,810 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:43:44,810 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:43:44,818 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:43:44,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:43:44,849 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:43:45,042 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 515 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2018-01-30 02:43:45,059 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:43:45,059 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 23] total 32 [2018-01-30 02:43:45,059 INFO L409 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-01-30 02:43:45,060 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-01-30 02:43:45,060 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2018-01-30 02:43:45,060 INFO L87 Difference]: Start difference. First operand 336 states and 345 transitions. Second operand 32 states. [2018-01-30 02:43:45,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:43:45,790 INFO L93 Difference]: Finished difference Result 574 states and 593 transitions. [2018-01-30 02:43:45,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-01-30 02:43:45,792 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 330 [2018-01-30 02:43:45,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:43:45,793 INFO L225 Difference]: With dead ends: 574 [2018-01-30 02:43:45,793 INFO L226 Difference]: Without dead ends: 364 [2018-01-30 02:43:45,794 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 627 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=725, Invalid=2815, Unknown=0, NotChecked=0, Total=3540 [2018-01-30 02:43:45,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2018-01-30 02:43:45,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 353. [2018-01-30 02:43:45,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2018-01-30 02:43:45,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 362 transitions. [2018-01-30 02:43:45,797 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 362 transitions. Word has length 330 [2018-01-30 02:43:45,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:43:45,797 INFO L432 AbstractCegarLoop]: Abstraction has 353 states and 362 transitions. [2018-01-30 02:43:45,798 INFO L433 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-01-30 02:43:45,798 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 362 transitions. [2018-01-30 02:43:45,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2018-01-30 02:43:45,802 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:43:45,803 INFO L350 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:43:45,803 INFO L371 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:43:45,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1493715072, now seen corresponding path program 20 times [2018-01-30 02:43:45,803 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:43:45,803 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:43:45,803 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:45,803 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:43:45,804 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:45,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:43:45,830 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:43:46,132 INFO L134 CoverageAnalysis]: Checked inductivity of 999 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2018-01-30 02:43:46,132 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:43:46,132 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:43:46,137 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 02:43:46,147 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:46,164 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:46,167 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:43:46,170 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:43:46,762 INFO L134 CoverageAnalysis]: Checked inductivity of 999 backedges. 0 proven. 627 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2018-01-30 02:43:46,781 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:43:46,781 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 25] total 32 [2018-01-30 02:43:46,781 INFO L409 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-01-30 02:43:46,781 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-01-30 02:43:46,782 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=801, Unknown=0, NotChecked=0, Total=992 [2018-01-30 02:43:46,782 INFO L87 Difference]: Start difference. First operand 353 states and 362 transitions. Second operand 32 states. [2018-01-30 02:43:47,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:43:47,220 INFO L93 Difference]: Finished difference Result 597 states and 616 transitions. [2018-01-30 02:43:47,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-01-30 02:43:47,220 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 347 [2018-01-30 02:43:47,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:43:47,221 INFO L225 Difference]: With dead ends: 597 [2018-01-30 02:43:47,222 INFO L226 Difference]: Without dead ends: 381 [2018-01-30 02:43:47,223 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=795, Invalid=2745, Unknown=0, NotChecked=0, Total=3540 [2018-01-30 02:43:47,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2018-01-30 02:43:47,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 370. [2018-01-30 02:43:47,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 370 states. [2018-01-30 02:43:47,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 379 transitions. [2018-01-30 02:43:47,234 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 379 transitions. Word has length 347 [2018-01-30 02:43:47,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:43:47,234 INFO L432 AbstractCegarLoop]: Abstraction has 370 states and 379 transitions. [2018-01-30 02:43:47,234 INFO L433 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-01-30 02:43:47,234 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 379 transitions. [2018-01-30 02:43:47,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2018-01-30 02:43:47,235 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:43:47,235 INFO L350 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:43:47,235 INFO L371 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:43:47,236 INFO L82 PathProgramCache]: Analyzing trace with hash 230006761, now seen corresponding path program 21 times [2018-01-30 02:43:47,236 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:43:47,236 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:43:47,236 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:47,236 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:43:47,236 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:47,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:43:47,263 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:43:47,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1142 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 1098 trivial. 0 not checked. [2018-01-30 02:43:47,483 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:43:47,483 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:43:47,487 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 02:43:47,497 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:43:47,501 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:43:47,505 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:43:47,510 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:43:47,516 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:43:47,517 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:43:47,519 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:43:48,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1142 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 1098 trivial. 0 not checked. [2018-01-30 02:43:48,252 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:43:48,252 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2018-01-30 02:43:48,252 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-30 02:43:48,252 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-30 02:43:48,252 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2018-01-30 02:43:48,252 INFO L87 Difference]: Start difference. First operand 370 states and 379 transitions. Second operand 15 states. [2018-01-30 02:43:48,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:43:48,443 INFO L93 Difference]: Finished difference Result 501 states and 516 transitions. [2018-01-30 02:43:48,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-01-30 02:43:48,443 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 364 [2018-01-30 02:43:48,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:43:48,444 INFO L225 Difference]: With dead ends: 501 [2018-01-30 02:43:48,444 INFO L226 Difference]: Without dead ends: 388 [2018-01-30 02:43:48,444 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=225, Invalid=705, Unknown=0, NotChecked=0, Total=930 [2018-01-30 02:43:48,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2018-01-30 02:43:48,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 382. [2018-01-30 02:43:48,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2018-01-30 02:43:48,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 391 transitions. [2018-01-30 02:43:48,447 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 391 transitions. Word has length 364 [2018-01-30 02:43:48,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:43:48,447 INFO L432 AbstractCegarLoop]: Abstraction has 382 states and 391 transitions. [2018-01-30 02:43:48,447 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-30 02:43:48,447 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 391 transitions. [2018-01-30 02:43:48,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2018-01-30 02:43:48,448 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:43:48,449 INFO L350 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:43:48,449 INFO L371 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:43:48,449 INFO L82 PathProgramCache]: Analyzing trace with hash 695711272, now seen corresponding path program 22 times [2018-01-30 02:43:48,449 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:43:48,449 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:43:48,449 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:48,449 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:43:48,450 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:48,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:43:48,460 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:43:48,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1194 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 1150 trivial. 0 not checked. [2018-01-30 02:43:48,642 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:43:48,642 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:43:48,647 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 02:43:48,689 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:43:48,691 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:43:48,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1194 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2018-01-30 02:43:48,953 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:43:48,953 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 27] total 36 [2018-01-30 02:43:48,953 INFO L409 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-01-30 02:43:48,953 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-01-30 02:43:48,954 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=1031, Unknown=0, NotChecked=0, Total=1260 [2018-01-30 02:43:48,954 INFO L87 Difference]: Start difference. First operand 382 states and 391 transitions. Second operand 36 states. [2018-01-30 02:43:49,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:43:49,449 INFO L93 Difference]: Finished difference Result 644 states and 663 transitions. [2018-01-30 02:43:49,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-01-30 02:43:49,449 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 376 [2018-01-30 02:43:49,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:43:49,450 INFO L225 Difference]: With dead ends: 644 [2018-01-30 02:43:49,450 INFO L226 Difference]: Without dead ends: 410 [2018-01-30 02:43:49,451 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 815 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=965, Invalid=3591, Unknown=0, NotChecked=0, Total=4556 [2018-01-30 02:43:49,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2018-01-30 02:43:49,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 399. [2018-01-30 02:43:49,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2018-01-30 02:43:49,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 408 transitions. [2018-01-30 02:43:49,454 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 408 transitions. Word has length 376 [2018-01-30 02:43:49,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:43:49,455 INFO L432 AbstractCegarLoop]: Abstraction has 399 states and 408 transitions. [2018-01-30 02:43:49,455 INFO L433 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-01-30 02:43:49,455 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 408 transitions. [2018-01-30 02:43:49,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2018-01-30 02:43:49,456 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:43:49,457 INFO L350 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:43:49,457 INFO L371 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:43:49,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1883955810, now seen corresponding path program 23 times [2018-01-30 02:43:49,457 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:43:49,457 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:43:49,457 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:49,457 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:43:49,457 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:49,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:43:49,469 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:43:49,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1354 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 1284 trivial. 0 not checked. [2018-01-30 02:43:49,754 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:43:49,754 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:43:49,758 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 02:43:49,769 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:49,771 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:49,773 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:49,775 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:49,776 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:49,778 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:49,780 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:49,782 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:49,786 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:49,791 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:49,797 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:49,803 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:49,811 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:49,828 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:49,842 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:43:49,844 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:43:49,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1354 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 1284 trivial. 0 not checked. [2018-01-30 02:43:49,998 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:43:49,999 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2018-01-30 02:43:49,999 INFO L409 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-01-30 02:43:49,999 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-01-30 02:43:49,999 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2018-01-30 02:43:49,999 INFO L87 Difference]: Start difference. First operand 399 states and 408 transitions. Second operand 18 states. [2018-01-30 02:43:50,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:43:50,337 INFO L93 Difference]: Finished difference Result 623 states and 641 transitions. [2018-01-30 02:43:50,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-01-30 02:43:50,337 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 393 [2018-01-30 02:43:50,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:43:50,338 INFO L225 Difference]: With dead ends: 623 [2018-01-30 02:43:50,338 INFO L226 Difference]: Without dead ends: 417 [2018-01-30 02:43:50,339 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 389 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=328, Invalid=1078, Unknown=0, NotChecked=0, Total=1406 [2018-01-30 02:43:50,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2018-01-30 02:43:50,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 411. [2018-01-30 02:43:50,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2018-01-30 02:43:50,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 420 transitions. [2018-01-30 02:43:50,345 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 420 transitions. Word has length 393 [2018-01-30 02:43:50,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:43:50,345 INFO L432 AbstractCegarLoop]: Abstraction has 411 states and 420 transitions. [2018-01-30 02:43:50,346 INFO L433 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-01-30 02:43:50,346 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 420 transitions. [2018-01-30 02:43:50,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2018-01-30 02:43:50,347 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:43:50,347 INFO L350 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:43:50,347 INFO L371 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:43:50,347 INFO L82 PathProgramCache]: Analyzing trace with hash -457620067, now seen corresponding path program 24 times [2018-01-30 02:43:50,347 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:43:50,347 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:43:50,348 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:50,348 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:43:50,348 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:50,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:43:50,380 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:43:50,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1418 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 1374 trivial. 0 not checked. [2018-01-30 02:43:50,753 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:43:50,753 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:43:50,758 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 02:43:50,769 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:43:50,771 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:43:50,779 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:43:50,782 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:43:50,798 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:43:50,809 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:43:50,825 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:43:50,836 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:43:50,851 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:43:50,862 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:43:50,864 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:43:51,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1418 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 1374 trivial. 0 not checked. [2018-01-30 02:43:51,225 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:43:51,225 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2018-01-30 02:43:51,225 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-30 02:43:51,225 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-30 02:43:51,225 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2018-01-30 02:43:51,226 INFO L87 Difference]: Start difference. First operand 411 states and 420 transitions. Second operand 15 states. [2018-01-30 02:43:51,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:43:51,447 INFO L93 Difference]: Finished difference Result 614 states and 631 transitions. [2018-01-30 02:43:51,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-01-30 02:43:51,448 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 405 [2018-01-30 02:43:51,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:43:51,449 INFO L225 Difference]: With dead ends: 614 [2018-01-30 02:43:51,449 INFO L226 Difference]: Without dead ends: 429 [2018-01-30 02:43:51,449 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=225, Invalid=705, Unknown=0, NotChecked=0, Total=930 [2018-01-30 02:43:51,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2018-01-30 02:43:51,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 423. [2018-01-30 02:43:51,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2018-01-30 02:43:51,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 432 transitions. [2018-01-30 02:43:51,452 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 432 transitions. Word has length 405 [2018-01-30 02:43:51,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:43:51,453 INFO L432 AbstractCegarLoop]: Abstraction has 423 states and 432 transitions. [2018-01-30 02:43:51,453 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-30 02:43:51,453 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 432 transitions. [2018-01-30 02:43:51,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2018-01-30 02:43:51,454 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:43:51,454 INFO L350 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 7, 7, 7, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:43:51,454 INFO L371 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:43:51,454 INFO L82 PathProgramCache]: Analyzing trace with hash -163818147, now seen corresponding path program 25 times [2018-01-30 02:43:51,454 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:43:51,454 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:43:51,455 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:51,455 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:43:51,455 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:51,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:43:51,466 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:43:51,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1470 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 1368 trivial. 0 not checked. [2018-01-30 02:43:51,876 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:43:51,876 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:43:51,880 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:43:51,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:43:51,916 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:43:52,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1470 backedges. 0 proven. 884 refuted. 0 times theorem prover too weak. 586 trivial. 0 not checked. [2018-01-30 02:43:52,248 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:43:52,249 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 29] total 42 [2018-01-30 02:43:52,249 INFO L409 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-01-30 02:43:52,249 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-01-30 02:43:52,249 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=1436, Unknown=0, NotChecked=0, Total=1722 [2018-01-30 02:43:52,250 INFO L87 Difference]: Start difference. First operand 423 states and 432 transitions. Second operand 42 states. [2018-01-30 02:43:52,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:43:52,899 INFO L93 Difference]: Finished difference Result 715 states and 734 transitions. [2018-01-30 02:43:52,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-01-30 02:43:52,899 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 417 [2018-01-30 02:43:52,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:43:52,900 INFO L225 Difference]: With dead ends: 715 [2018-01-30 02:43:52,900 INFO L226 Difference]: Without dead ends: 451 [2018-01-30 02:43:52,902 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 391 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1186 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1220, Invalid=5100, Unknown=0, NotChecked=0, Total=6320 [2018-01-30 02:43:52,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2018-01-30 02:43:52,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 440. [2018-01-30 02:43:52,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 440 states. [2018-01-30 02:43:52,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 449 transitions. [2018-01-30 02:43:52,905 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 449 transitions. Word has length 417 [2018-01-30 02:43:52,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:43:52,906 INFO L432 AbstractCegarLoop]: Abstraction has 440 states and 449 transitions. [2018-01-30 02:43:52,906 INFO L433 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-01-30 02:43:52,906 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 449 transitions. [2018-01-30 02:43:52,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2018-01-30 02:43:52,907 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:43:52,907 INFO L350 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:43:52,907 INFO L371 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:43:52,908 INFO L82 PathProgramCache]: Analyzing trace with hash 617950817, now seen corresponding path program 26 times [2018-01-30 02:43:52,908 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:43:52,908 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:43:52,908 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:52,909 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:43:52,909 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:52,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:43:52,919 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:43:53,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 1551 trivial. 0 not checked. [2018-01-30 02:43:53,234 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:43:53,234 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:43:53,240 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 02:43:53,250 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:53,285 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:53,293 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:43:53,296 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:43:53,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1029 refuted. 0 times theorem prover too weak. 624 trivial. 0 not checked. [2018-01-30 02:43:53,758 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:43:53,759 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 31] total 44 [2018-01-30 02:43:53,759 INFO L409 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-01-30 02:43:53,759 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-01-30 02:43:53,760 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=317, Invalid=1575, Unknown=0, NotChecked=0, Total=1892 [2018-01-30 02:43:53,760 INFO L87 Difference]: Start difference. First operand 440 states and 449 transitions. Second operand 44 states. [2018-01-30 02:43:54,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:43:54,581 INFO L93 Difference]: Finished difference Result 738 states and 757 transitions. [2018-01-30 02:43:54,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-01-30 02:43:54,581 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 434 [2018-01-30 02:43:54,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:43:54,582 INFO L225 Difference]: With dead ends: 738 [2018-01-30 02:43:54,582 INFO L226 Difference]: Without dead ends: 468 [2018-01-30 02:43:54,584 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 406 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1311 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1365, Invalid=5607, Unknown=0, NotChecked=0, Total=6972 [2018-01-30 02:43:54,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2018-01-30 02:43:54,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 457. [2018-01-30 02:43:54,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 457 states. [2018-01-30 02:43:54,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 466 transitions. [2018-01-30 02:43:54,588 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 466 transitions. Word has length 434 [2018-01-30 02:43:54,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:43:54,588 INFO L432 AbstractCegarLoop]: Abstraction has 457 states and 466 transitions. [2018-01-30 02:43:54,588 INFO L433 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-01-30 02:43:54,588 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 466 transitions. [2018-01-30 02:43:54,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2018-01-30 02:43:54,589 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:43:54,589 INFO L350 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:43:54,590 INFO L371 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:43:54,590 INFO L82 PathProgramCache]: Analyzing trace with hash -123321898, now seen corresponding path program 27 times [2018-01-30 02:43:54,590 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:43:54,590 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:43:54,590 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:54,590 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:43:54,590 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:54,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:43:54,601 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:43:54,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1847 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 1777 trivial. 0 not checked. [2018-01-30 02:43:54,891 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:43:54,891 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:43:54,896 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 02:43:54,908 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:43:54,912 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:43:54,916 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:43:54,921 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:43:54,926 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:43:54,932 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:43:54,933 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:43:54,935 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:43:54,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1847 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 1777 trivial. 0 not checked. [2018-01-30 02:43:55,001 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:43:55,001 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-01-30 02:43:55,002 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-30 02:43:55,002 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-30 02:43:55,002 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-01-30 02:43:55,002 INFO L87 Difference]: Start difference. First operand 457 states and 466 transitions. Second operand 13 states. [2018-01-30 02:43:55,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:43:55,091 INFO L93 Difference]: Finished difference Result 630 states and 645 transitions. [2018-01-30 02:43:55,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-30 02:43:55,091 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 451 [2018-01-30 02:43:55,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:43:55,092 INFO L225 Difference]: With dead ends: 630 [2018-01-30 02:43:55,092 INFO L226 Difference]: Without dead ends: 466 [2018-01-30 02:43:55,092 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 452 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=178, Invalid=328, Unknown=0, NotChecked=0, Total=506 [2018-01-30 02:43:55,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2018-01-30 02:43:55,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 463. [2018-01-30 02:43:55,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 463 states. [2018-01-30 02:43:55,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 472 transitions. [2018-01-30 02:43:55,096 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 472 transitions. Word has length 451 [2018-01-30 02:43:55,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:43:55,096 INFO L432 AbstractCegarLoop]: Abstraction has 463 states and 472 transitions. [2018-01-30 02:43:55,096 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-30 02:43:55,096 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 472 transitions. [2018-01-30 02:43:55,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2018-01-30 02:43:55,097 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:43:55,097 INFO L350 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:43:55,097 INFO L371 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:43:55,098 INFO L82 PathProgramCache]: Analyzing trace with hash 947429189, now seen corresponding path program 28 times [2018-01-30 02:43:55,098 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:43:55,098 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:43:55,098 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:55,098 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:43:55,098 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:55,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:43:55,109 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:43:55,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1879 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 1777 trivial. 0 not checked. [2018-01-30 02:43:55,471 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:43:55,472 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:43:55,476 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 02:43:55,529 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:43:55,532 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:43:56,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1879 backedges. 0 proven. 1185 refuted. 0 times theorem prover too weak. 694 trivial. 0 not checked. [2018-01-30 02:43:56,017 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:43:56,017 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 33] total 46 [2018-01-30 02:43:56,018 INFO L409 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-01-30 02:43:56,018 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-01-30 02:43:56,018 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=1720, Unknown=0, NotChecked=0, Total=2070 [2018-01-30 02:43:56,018 INFO L87 Difference]: Start difference. First operand 463 states and 472 transitions. Second operand 46 states. [2018-01-30 02:43:57,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:43:57,185 INFO L93 Difference]: Finished difference Result 773 states and 792 transitions. [2018-01-30 02:43:57,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-01-30 02:43:57,185 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 457 [2018-01-30 02:43:57,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:43:57,186 INFO L225 Difference]: With dead ends: 773 [2018-01-30 02:43:57,186 INFO L226 Difference]: Without dead ends: 491 [2018-01-30 02:43:57,189 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 427 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1442 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1520, Invalid=6136, Unknown=0, NotChecked=0, Total=7656 [2018-01-30 02:43:57,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2018-01-30 02:43:57,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 480. [2018-01-30 02:43:57,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 480 states. [2018-01-30 02:43:57,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 489 transitions. [2018-01-30 02:43:57,203 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 489 transitions. Word has length 457 [2018-01-30 02:43:57,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:43:57,203 INFO L432 AbstractCegarLoop]: Abstraction has 480 states and 489 transitions. [2018-01-30 02:43:57,203 INFO L433 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-01-30 02:43:57,203 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 489 transitions. [2018-01-30 02:43:57,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2018-01-30 02:43:57,205 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:43:57,205 INFO L350 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:43:57,205 INFO L371 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:43:57,205 INFO L82 PathProgramCache]: Analyzing trace with hash 650767883, now seen corresponding path program 29 times [2018-01-30 02:43:57,205 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:43:57,205 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:43:57,206 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:57,206 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:43:57,206 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:57,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:43:57,226 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:43:57,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2084 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2014 trivial. 0 not checked. [2018-01-30 02:43:57,941 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:43:57,941 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:43:57,946 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 02:43:57,969 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:57,979 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:57,980 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:57,981 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:57,982 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:57,984 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:57,985 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:57,987 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:57,989 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:57,992 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:57,996 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:58,001 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:58,007 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:58,014 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:58,023 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:58,035 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:58,067 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:43:58,068 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:43:58,072 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:43:58,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2084 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2014 trivial. 0 not checked. [2018-01-30 02:43:58,155 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:43:58,155 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-01-30 02:43:58,155 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-30 02:43:58,155 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-30 02:43:58,155 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-01-30 02:43:58,156 INFO L87 Difference]: Start difference. First operand 480 states and 489 transitions. Second operand 13 states. [2018-01-30 02:43:58,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:43:58,294 INFO L93 Difference]: Finished difference Result 548 states and 560 transitions. [2018-01-30 02:43:58,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-30 02:43:58,294 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 474 [2018-01-30 02:43:58,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:43:58,295 INFO L225 Difference]: With dead ends: 548 [2018-01-30 02:43:58,295 INFO L226 Difference]: Without dead ends: 489 [2018-01-30 02:43:58,296 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 475 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=178, Invalid=328, Unknown=0, NotChecked=0, Total=506 [2018-01-30 02:43:58,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2018-01-30 02:43:58,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 486. [2018-01-30 02:43:58,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 486 states. [2018-01-30 02:43:58,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 495 transitions. [2018-01-30 02:43:58,300 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 495 transitions. Word has length 474 [2018-01-30 02:43:58,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:43:58,300 INFO L432 AbstractCegarLoop]: Abstraction has 486 states and 495 transitions. [2018-01-30 02:43:58,300 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-30 02:43:58,300 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 495 transitions. [2018-01-30 02:43:58,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2018-01-30 02:43:58,301 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:43:58,302 INFO L350 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:43:58,302 INFO L371 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:43:58,302 INFO L82 PathProgramCache]: Analyzing trace with hash 412139583, now seen corresponding path program 30 times [2018-01-30 02:43:58,302 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:43:58,303 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:43:58,303 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:58,303 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:43:58,303 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:58,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:43:58,328 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:43:58,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2046 trivial. 0 not checked. [2018-01-30 02:43:58,606 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:43:58,606 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:43:58,611 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 02:43:58,622 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:43:58,623 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:43:58,626 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:43:58,628 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:43:58,632 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:43:58,634 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:43:58,639 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:43:58,642 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:43:58,646 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:43:58,651 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:43:58,657 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:43:58,658 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:43:58,661 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:43:58,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2046 trivial. 0 not checked. [2018-01-30 02:43:58,754 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:43:58,754 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2018-01-30 02:43:58,755 INFO L409 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-01-30 02:43:58,755 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-01-30 02:43:58,755 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2018-01-30 02:43:58,755 INFO L87 Difference]: Start difference. First operand 486 states and 495 transitions. Second operand 18 states. [2018-01-30 02:43:59,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:43:59,028 INFO L93 Difference]: Finished difference Result 719 states and 736 transitions. [2018-01-30 02:43:59,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-01-30 02:43:59,028 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 480 [2018-01-30 02:43:59,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:43:59,029 INFO L225 Difference]: With dead ends: 719 [2018-01-30 02:43:59,029 INFO L226 Difference]: Without dead ends: 504 [2018-01-30 02:43:59,030 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 476 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=328, Invalid=1078, Unknown=0, NotChecked=0, Total=1406 [2018-01-30 02:43:59,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2018-01-30 02:43:59,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 498. [2018-01-30 02:43:59,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 498 states. [2018-01-30 02:43:59,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 507 transitions. [2018-01-30 02:43:59,033 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 507 transitions. Word has length 480 [2018-01-30 02:43:59,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:43:59,033 INFO L432 AbstractCegarLoop]: Abstraction has 498 states and 507 transitions. [2018-01-30 02:43:59,033 INFO L433 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-01-30 02:43:59,033 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 507 transitions. [2018-01-30 02:43:59,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2018-01-30 02:43:59,035 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:43:59,035 INFO L350 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:43:59,035 INFO L371 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:43:59,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1966577411, now seen corresponding path program 31 times [2018-01-30 02:43:59,035 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:43:59,035 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:43:59,036 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:59,036 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:43:59,036 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:43:59,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:43:59,047 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:43:59,344 INFO L134 CoverageAnalysis]: Checked inductivity of 2180 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 2078 trivial. 0 not checked. [2018-01-30 02:43:59,344 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:43:59,344 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:43:59,349 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:43:59,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:43:59,391 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:43:59,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2180 backedges. 0 proven. 1352 refuted. 0 times theorem prover too weak. 828 trivial. 0 not checked. [2018-01-30 02:43:59,829 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:43:59,829 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 35] total 48 [2018-01-30 02:43:59,829 INFO L409 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-01-30 02:43:59,830 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-01-30 02:43:59,830 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=385, Invalid=1871, Unknown=0, NotChecked=0, Total=2256 [2018-01-30 02:43:59,830 INFO L87 Difference]: Start difference. First operand 498 states and 507 transitions. Second operand 48 states. [2018-01-30 02:44:00,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:44:00,622 INFO L93 Difference]: Finished difference Result 832 states and 851 transitions. [2018-01-30 02:44:00,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-01-30 02:44:00,632 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 492 [2018-01-30 02:44:00,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:44:00,633 INFO L225 Difference]: With dead ends: 832 [2018-01-30 02:44:00,633 INFO L226 Difference]: Without dead ends: 526 [2018-01-30 02:44:00,634 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 460 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1579 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1685, Invalid=6687, Unknown=0, NotChecked=0, Total=8372 [2018-01-30 02:44:00,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2018-01-30 02:44:00,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 515. [2018-01-30 02:44:00,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 515 states. [2018-01-30 02:44:00,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 524 transitions. [2018-01-30 02:44:00,637 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 524 transitions. Word has length 492 [2018-01-30 02:44:00,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:44:00,637 INFO L432 AbstractCegarLoop]: Abstraction has 515 states and 524 transitions. [2018-01-30 02:44:00,638 INFO L433 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-01-30 02:44:00,638 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 524 transitions. [2018-01-30 02:44:00,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2018-01-30 02:44:00,642 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:44:00,643 INFO L350 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:44:00,643 INFO L371 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:44:00,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1922656909, now seen corresponding path program 32 times [2018-01-30 02:44:00,643 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:44:00,643 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:44:00,643 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:00,643 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:44:00,644 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:00,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:44:00,671 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:44:01,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2396 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 2256 trivial. 0 not checked. [2018-01-30 02:44:01,056 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:44:01,057 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:44:01,061 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 02:44:01,074 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:01,099 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:01,103 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:44:01,106 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:44:01,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2396 backedges. 0 proven. 1530 refuted. 0 times theorem prover too weak. 866 trivial. 0 not checked. [2018-01-30 02:44:01,595 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:44:01,595 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 37] total 52 [2018-01-30 02:44:01,595 INFO L409 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-01-30 02:44:01,595 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-01-30 02:44:01,596 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=439, Invalid=2213, Unknown=0, NotChecked=0, Total=2652 [2018-01-30 02:44:01,596 INFO L87 Difference]: Start difference. First operand 515 states and 524 transitions. Second operand 52 states. [2018-01-30 02:44:02,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:44:02,473 INFO L93 Difference]: Finished difference Result 855 states and 874 transitions. [2018-01-30 02:44:02,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-01-30 02:44:02,473 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 509 [2018-01-30 02:44:02,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:44:02,474 INFO L225 Difference]: With dead ends: 855 [2018-01-30 02:44:02,474 INFO L226 Difference]: Without dead ends: 543 [2018-01-30 02:44:02,475 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 573 GetRequests, 475 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1897 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1935, Invalid=7965, Unknown=0, NotChecked=0, Total=9900 [2018-01-30 02:44:02,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2018-01-30 02:44:02,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 532. [2018-01-30 02:44:02,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 532 states. [2018-01-30 02:44:02,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 541 transitions. [2018-01-30 02:44:02,479 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 541 transitions. Word has length 509 [2018-01-30 02:44:02,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:44:02,479 INFO L432 AbstractCegarLoop]: Abstraction has 532 states and 541 transitions. [2018-01-30 02:44:02,479 INFO L433 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-01-30 02:44:02,479 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 541 transitions. [2018-01-30 02:44:02,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2018-01-30 02:44:02,481 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:44:02,481 INFO L350 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:44:02,481 INFO L371 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:44:02,481 INFO L82 PathProgramCache]: Analyzing trace with hash -451836809, now seen corresponding path program 33 times [2018-01-30 02:44:02,481 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:44:02,481 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:44:02,481 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:02,482 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:44:02,482 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:02,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:44:02,494 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:44:03,067 INFO L134 CoverageAnalysis]: Checked inductivity of 2629 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 2527 trivial. 0 not checked. [2018-01-30 02:44:03,067 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:44:03,067 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:44:03,071 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 02:44:03,083 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:44:03,087 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:44:03,091 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:44:03,096 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:44:03,101 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:44:03,107 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:44:03,115 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:44:03,116 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:44:03,118 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:44:03,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2629 backedges. 38 proven. 102 refuted. 0 times theorem prover too weak. 2489 trivial. 0 not checked. [2018-01-30 02:44:03,267 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:44:03,267 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18] total 24 [2018-01-30 02:44:03,267 INFO L409 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-01-30 02:44:03,267 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-01-30 02:44:03,267 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2018-01-30 02:44:03,268 INFO L87 Difference]: Start difference. First operand 532 states and 541 transitions. Second operand 24 states. [2018-01-30 02:44:03,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:44:03,594 INFO L93 Difference]: Finished difference Result 783 states and 800 transitions. [2018-01-30 02:44:03,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-01-30 02:44:03,594 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 526 [2018-01-30 02:44:03,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:44:03,595 INFO L225 Difference]: With dead ends: 783 [2018-01-30 02:44:03,595 INFO L226 Difference]: Without dead ends: 550 [2018-01-30 02:44:03,596 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 567 GetRequests, 518 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=543, Invalid=2007, Unknown=0, NotChecked=0, Total=2550 [2018-01-30 02:44:03,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2018-01-30 02:44:03,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 544. [2018-01-30 02:44:03,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2018-01-30 02:44:03,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 553 transitions. [2018-01-30 02:44:03,600 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 553 transitions. Word has length 526 [2018-01-30 02:44:03,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:44:03,600 INFO L432 AbstractCegarLoop]: Abstraction has 544 states and 553 transitions. [2018-01-30 02:44:03,600 INFO L433 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-01-30 02:44:03,600 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 553 transitions. [2018-01-30 02:44:03,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2018-01-30 02:44:03,602 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:44:03,602 INFO L350 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:44:03,602 INFO L371 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:44:03,602 INFO L82 PathProgramCache]: Analyzing trace with hash 101623706, now seen corresponding path program 34 times [2018-01-30 02:44:03,602 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:44:03,602 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:44:03,603 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:03,603 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:44:03,603 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:03,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:44:03,616 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:44:04,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2705 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 2565 trivial. 0 not checked. [2018-01-30 02:44:04,170 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:44:04,170 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:44:04,175 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 02:44:04,245 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:44:04,248 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:44:04,734 INFO L134 CoverageAnalysis]: Checked inductivity of 2705 backedges. 0 proven. 1719 refuted. 0 times theorem prover too weak. 986 trivial. 0 not checked. [2018-01-30 02:44:04,752 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:44:04,752 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 39] total 54 [2018-01-30 02:44:04,753 INFO L409 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-01-30 02:44:04,753 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-01-30 02:44:04,753 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=478, Invalid=2384, Unknown=0, NotChecked=0, Total=2862 [2018-01-30 02:44:04,753 INFO L87 Difference]: Start difference. First operand 544 states and 553 transitions. Second operand 54 states. [2018-01-30 02:44:06,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:44:06,337 INFO L93 Difference]: Finished difference Result 902 states and 921 transitions. [2018-01-30 02:44:06,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-01-30 02:44:06,338 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 538 [2018-01-30 02:44:06,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:44:06,340 INFO L225 Difference]: With dead ends: 902 [2018-01-30 02:44:06,340 INFO L226 Difference]: Without dead ends: 572 [2018-01-30 02:44:06,341 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 604 GetRequests, 502 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2054 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2120, Invalid=8592, Unknown=0, NotChecked=0, Total=10712 [2018-01-30 02:44:06,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2018-01-30 02:44:06,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 561. [2018-01-30 02:44:06,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 561 states. [2018-01-30 02:44:06,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 570 transitions. [2018-01-30 02:44:06,346 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 570 transitions. Word has length 538 [2018-01-30 02:44:06,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:44:06,346 INFO L432 AbstractCegarLoop]: Abstraction has 561 states and 570 transitions. [2018-01-30 02:44:06,346 INFO L433 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-01-30 02:44:06,346 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 570 transitions. [2018-01-30 02:44:06,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2018-01-30 02:44:06,350 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:44:06,350 INFO L350 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:44:06,350 INFO L371 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:44:06,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1184461301, now seen corresponding path program 35 times [2018-01-30 02:44:06,351 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:44:06,351 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:44:06,351 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:06,351 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:44:06,351 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:06,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:44:06,365 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:44:07,099 INFO L134 CoverageAnalysis]: Checked inductivity of 2949 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 2765 trivial. 0 not checked. [2018-01-30 02:44:07,099 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:44:07,099 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:44:07,104 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 02:44:07,116 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:07,118 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:07,119 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:07,120 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:07,121 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:07,123 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:07,124 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:07,126 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:07,128 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:07,130 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:07,133 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:07,136 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:07,142 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:07,148 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:07,156 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:07,165 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:07,175 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:07,186 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:07,200 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:07,238 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:07,239 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:44:07,243 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:44:07,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2949 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 2809 trivial. 0 not checked. [2018-01-30 02:44:07,415 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:44:07,415 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 26 [2018-01-30 02:44:07,415 INFO L409 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-01-30 02:44:07,416 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-01-30 02:44:07,416 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=516, Unknown=0, NotChecked=0, Total=650 [2018-01-30 02:44:07,416 INFO L87 Difference]: Start difference. First operand 561 states and 570 transitions. Second operand 26 states. [2018-01-30 02:44:07,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:44:07,765 INFO L93 Difference]: Finished difference Result 869 states and 887 transitions. [2018-01-30 02:44:07,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-01-30 02:44:07,766 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 555 [2018-01-30 02:44:07,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:44:07,767 INFO L225 Difference]: With dead ends: 869 [2018-01-30 02:44:07,767 INFO L226 Difference]: Without dead ends: 579 [2018-01-30 02:44:07,768 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 603 GetRequests, 549 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=690, Invalid=2390, Unknown=0, NotChecked=0, Total=3080 [2018-01-30 02:44:07,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2018-01-30 02:44:07,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 573. [2018-01-30 02:44:07,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 573 states. [2018-01-30 02:44:07,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 582 transitions. [2018-01-30 02:44:07,771 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 582 transitions. Word has length 555 [2018-01-30 02:44:07,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:44:07,771 INFO L432 AbstractCegarLoop]: Abstraction has 573 states and 582 transitions. [2018-01-30 02:44:07,772 INFO L433 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-01-30 02:44:07,772 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 582 transitions. [2018-01-30 02:44:07,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 568 [2018-01-30 02:44:07,773 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:44:07,774 INFO L350 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 10, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:44:07,774 INFO L371 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:44:07,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1742989071, now seen corresponding path program 36 times [2018-01-30 02:44:07,774 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:44:07,774 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:44:07,774 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:07,774 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:44:07,774 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:07,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:44:07,788 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:44:08,358 INFO L134 CoverageAnalysis]: Checked inductivity of 3043 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 2903 trivial. 0 not checked. [2018-01-30 02:44:08,358 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:44:08,359 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:44:08,376 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 02:44:08,388 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:08,399 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:08,411 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:08,418 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:08,422 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:08,425 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:08,429 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:08,432 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:08,436 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:08,441 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:08,446 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:08,454 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:08,461 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:08,462 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:44:08,465 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:44:08,580 INFO L134 CoverageAnalysis]: Checked inductivity of 3043 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 2941 trivial. 0 not checked. [2018-01-30 02:44:08,597 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:44:08,598 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 23 [2018-01-30 02:44:08,598 INFO L409 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-01-30 02:44:08,598 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-01-30 02:44:08,598 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2018-01-30 02:44:08,598 INFO L87 Difference]: Start difference. First operand 573 states and 582 transitions. Second operand 23 states. [2018-01-30 02:44:08,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:44:08,968 INFO L93 Difference]: Finished difference Result 650 states and 663 transitions. [2018-01-30 02:44:08,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-01-30 02:44:08,968 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 567 [2018-01-30 02:44:08,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:44:08,969 INFO L225 Difference]: With dead ends: 650 [2018-01-30 02:44:08,969 INFO L226 Difference]: Without dead ends: 591 [2018-01-30 02:44:08,970 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 609 GetRequests, 562 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 445 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=537, Invalid=1815, Unknown=0, NotChecked=0, Total=2352 [2018-01-30 02:44:08,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2018-01-30 02:44:08,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 585. [2018-01-30 02:44:08,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2018-01-30 02:44:08,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 594 transitions. [2018-01-30 02:44:08,973 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 594 transitions. Word has length 567 [2018-01-30 02:44:08,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:44:08,974 INFO L432 AbstractCegarLoop]: Abstraction has 585 states and 594 transitions. [2018-01-30 02:44:08,974 INFO L433 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-01-30 02:44:08,974 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 594 transitions. [2018-01-30 02:44:08,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 580 [2018-01-30 02:44:08,976 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:44:08,976 INFO L350 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 10, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:44:08,976 INFO L371 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:44:08,976 INFO L82 PathProgramCache]: Analyzing trace with hash -321590545, now seen corresponding path program 37 times [2018-01-30 02:44:08,976 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:44:08,976 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:44:08,977 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:08,977 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:44:08,977 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:08,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:44:08,990 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:44:09,477 INFO L134 CoverageAnalysis]: Checked inductivity of 3125 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 2985 trivial. 0 not checked. [2018-01-30 02:44:09,478 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:44:09,478 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-01-30 02:44:09,498 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:44:09,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:44:09,546 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:44:10,078 INFO L134 CoverageAnalysis]: Checked inductivity of 3125 backedges. 0 proven. 1919 refuted. 0 times theorem prover too weak. 1206 trivial. 0 not checked. [2018-01-30 02:44:10,095 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:44:10,095 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 41] total 56 [2018-01-30 02:44:10,095 INFO L409 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-01-30 02:44:10,096 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-01-30 02:44:10,096 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=519, Invalid=2561, Unknown=0, NotChecked=0, Total=3080 [2018-01-30 02:44:10,096 INFO L87 Difference]: Start difference. First operand 585 states and 594 transitions. Second operand 56 states. [2018-01-30 02:44:11,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:44:11,086 INFO L93 Difference]: Finished difference Result 973 states and 992 transitions. [2018-01-30 02:44:11,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-01-30 02:44:11,087 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 579 [2018-01-30 02:44:11,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:44:11,088 INFO L225 Difference]: With dead ends: 973 [2018-01-30 02:44:11,088 INFO L226 Difference]: Without dead ends: 613 [2018-01-30 02:44:11,089 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 647 GetRequests, 541 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2217 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2315, Invalid=9241, Unknown=0, NotChecked=0, Total=11556 [2018-01-30 02:44:11,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2018-01-30 02:44:11,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 602. [2018-01-30 02:44:11,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 602 states. [2018-01-30 02:44:11,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 611 transitions. [2018-01-30 02:44:11,093 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 611 transitions. Word has length 579 [2018-01-30 02:44:11,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:44:11,093 INFO L432 AbstractCegarLoop]: Abstraction has 602 states and 611 transitions. [2018-01-30 02:44:11,093 INFO L433 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-01-30 02:44:11,093 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 611 transitions. [2018-01-30 02:44:11,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2018-01-30 02:44:11,106 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:44:11,106 INFO L350 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:44:11,106 INFO L371 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:44:11,106 INFO L82 PathProgramCache]: Analyzing trace with hash -14319785, now seen corresponding path program 38 times [2018-01-30 02:44:11,106 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:44:11,106 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:44:11,107 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:11,107 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:44:11,107 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:11,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:44:11,130 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:44:11,689 INFO L134 CoverageAnalysis]: Checked inductivity of 3380 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 3196 trivial. 0 not checked. [2018-01-30 02:44:11,689 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:44:11,689 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:44:11,694 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 02:44:11,707 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:11,736 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:11,741 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:44:11,744 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:44:12,324 INFO L134 CoverageAnalysis]: Checked inductivity of 3380 backedges. 0 proven. 2130 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2018-01-30 02:44:12,341 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:44:12,341 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 43] total 60 [2018-01-30 02:44:12,341 INFO L409 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-01-30 02:44:12,341 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-01-30 02:44:12,341 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=581, Invalid=2959, Unknown=0, NotChecked=0, Total=3540 [2018-01-30 02:44:12,342 INFO L87 Difference]: Start difference. First operand 602 states and 611 transitions. Second operand 60 states. [2018-01-30 02:44:13,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:44:13,466 INFO L93 Difference]: Finished difference Result 996 states and 1015 transitions. [2018-01-30 02:44:13,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-01-30 02:44:13,466 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 596 [2018-01-30 02:44:13,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:44:13,467 INFO L225 Difference]: With dead ends: 996 [2018-01-30 02:44:13,467 INFO L226 Difference]: Without dead ends: 630 [2018-01-30 02:44:13,468 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 670 GetRequests, 556 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2591 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2605, Invalid=10735, Unknown=0, NotChecked=0, Total=13340 [2018-01-30 02:44:13,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2018-01-30 02:44:13,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 619. [2018-01-30 02:44:13,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 619 states. [2018-01-30 02:44:13,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 628 transitions. [2018-01-30 02:44:13,473 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 628 transitions. Word has length 596 [2018-01-30 02:44:13,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:44:13,473 INFO L432 AbstractCegarLoop]: Abstraction has 619 states and 628 transitions. [2018-01-30 02:44:13,473 INFO L433 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-01-30 02:44:13,473 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 628 transitions. [2018-01-30 02:44:13,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 614 [2018-01-30 02:44:13,475 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:44:13,476 INFO L350 BasicCegarLoop]: trace histogram [22, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:44:13,476 INFO L371 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:44:13,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1622843380, now seen corresponding path program 39 times [2018-01-30 02:44:13,476 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:44:13,476 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:44:13,476 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:13,476 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:44:13,476 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:13,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:44:13,494 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:44:13,972 INFO L134 CoverageAnalysis]: Checked inductivity of 3652 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 3512 trivial. 0 not checked. [2018-01-30 02:44:13,972 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:44:13,972 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:44:13,977 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 02:44:13,991 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:44:13,994 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:44:13,998 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:44:14,004 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:44:14,009 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:44:14,016 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:44:14,023 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:44:14,033 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:44:14,034 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:44:14,037 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:44:14,133 INFO L134 CoverageAnalysis]: Checked inductivity of 3652 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 3512 trivial. 0 not checked. [2018-01-30 02:44:14,150 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:44:14,150 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-01-30 02:44:14,150 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-30 02:44:14,150 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-30 02:44:14,150 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2018-01-30 02:44:14,150 INFO L87 Difference]: Start difference. First operand 619 states and 628 transitions. Second operand 17 states. [2018-01-30 02:44:14,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:44:14,312 INFO L93 Difference]: Finished difference Result 699 states and 711 transitions. [2018-01-30 02:44:14,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-01-30 02:44:14,312 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 613 [2018-01-30 02:44:14,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:44:14,313 INFO L225 Difference]: With dead ends: 699 [2018-01-30 02:44:14,313 INFO L226 Difference]: Without dead ends: 628 [2018-01-30 02:44:14,313 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 643 GetRequests, 614 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=318, Invalid=612, Unknown=0, NotChecked=0, Total=930 [2018-01-30 02:44:14,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2018-01-30 02:44:14,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 625. [2018-01-30 02:44:14,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2018-01-30 02:44:14,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 634 transitions. [2018-01-30 02:44:14,317 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 634 transitions. Word has length 613 [2018-01-30 02:44:14,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:44:14,317 INFO L432 AbstractCegarLoop]: Abstraction has 625 states and 634 transitions. [2018-01-30 02:44:14,317 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-30 02:44:14,317 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 634 transitions. [2018-01-30 02:44:14,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 620 [2018-01-30 02:44:14,321 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:44:14,322 INFO L350 BasicCegarLoop]: trace histogram [22, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:44:14,322 INFO L371 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:44:14,322 INFO L82 PathProgramCache]: Analyzing trace with hash 170123648, now seen corresponding path program 40 times [2018-01-30 02:44:14,322 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:44:14,322 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:44:14,322 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:14,322 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:44:14,322 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:14,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:44:14,343 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:44:14,897 INFO L134 CoverageAnalysis]: Checked inductivity of 3696 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 3512 trivial. 0 not checked. [2018-01-30 02:44:14,897 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:44:14,897 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:44:14,901 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 02:44:14,992 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:44:14,996 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:44:15,674 INFO L134 CoverageAnalysis]: Checked inductivity of 3696 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 1344 trivial. 0 not checked. [2018-01-30 02:44:15,692 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:44:15,692 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 45] total 62 [2018-01-30 02:44:15,693 INFO L409 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-01-30 02:44:15,693 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-01-30 02:44:15,693 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=626, Invalid=3156, Unknown=0, NotChecked=0, Total=3782 [2018-01-30 02:44:15,693 INFO L87 Difference]: Start difference. First operand 625 states and 634 transitions. Second operand 62 states. [2018-01-30 02:44:16,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:44:16,871 INFO L93 Difference]: Finished difference Result 1031 states and 1050 transitions. [2018-01-30 02:44:16,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-01-30 02:44:16,872 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 619 [2018-01-30 02:44:16,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:44:16,873 INFO L225 Difference]: With dead ends: 1031 [2018-01-30 02:44:16,873 INFO L226 Difference]: Without dead ends: 653 [2018-01-30 02:44:16,874 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 695 GetRequests, 577 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2774 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2820, Invalid=11460, Unknown=0, NotChecked=0, Total=14280 [2018-01-30 02:44:16,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2018-01-30 02:44:16,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 642. [2018-01-30 02:44:16,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2018-01-30 02:44:16,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 651 transitions. [2018-01-30 02:44:16,880 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 651 transitions. Word has length 619 [2018-01-30 02:44:16,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:44:16,880 INFO L432 AbstractCegarLoop]: Abstraction has 642 states and 651 transitions. [2018-01-30 02:44:16,880 INFO L433 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-01-30 02:44:16,880 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 651 transitions. [2018-01-30 02:44:16,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 637 [2018-01-30 02:44:16,882 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:44:16,883 INFO L350 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:44:16,883 INFO L371 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:44:16,883 INFO L82 PathProgramCache]: Analyzing trace with hash 497690315, now seen corresponding path program 41 times [2018-01-30 02:44:16,883 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:44:16,883 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:44:16,883 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:16,883 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:44:16,883 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:16,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:44:16,900 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:44:17,504 INFO L134 CoverageAnalysis]: Checked inductivity of 3979 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 3795 trivial. 0 not checked. [2018-01-30 02:44:17,504 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:44:17,504 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:44:17,509 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 02:44:17,520 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:17,522 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:17,523 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:17,524 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:17,525 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:17,528 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:17,530 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:17,532 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:17,533 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:17,536 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:17,538 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:17,541 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:17,544 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:17,548 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:17,554 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:17,562 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:17,571 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:17,581 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:17,593 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:17,607 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:17,623 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:17,641 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:17,695 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:17,697 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:44:17,701 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:44:17,836 INFO L134 CoverageAnalysis]: Checked inductivity of 3979 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 3839 trivial. 0 not checked. [2018-01-30 02:44:17,854 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:44:17,854 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 26 [2018-01-30 02:44:17,855 INFO L409 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-01-30 02:44:17,855 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-01-30 02:44:17,855 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=516, Unknown=0, NotChecked=0, Total=650 [2018-01-30 02:44:17,855 INFO L87 Difference]: Start difference. First operand 642 states and 651 transitions. Second operand 26 states. [2018-01-30 02:44:18,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:44:18,224 INFO L93 Difference]: Finished difference Result 992 states and 1010 transitions. [2018-01-30 02:44:18,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-01-30 02:44:18,224 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 636 [2018-01-30 02:44:18,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:44:18,225 INFO L225 Difference]: With dead ends: 992 [2018-01-30 02:44:18,225 INFO L226 Difference]: Without dead ends: 660 [2018-01-30 02:44:18,226 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 684 GetRequests, 630 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=690, Invalid=2390, Unknown=0, NotChecked=0, Total=3080 [2018-01-30 02:44:18,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2018-01-30 02:44:18,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 654. [2018-01-30 02:44:18,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 654 states. [2018-01-30 02:44:18,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 663 transitions. [2018-01-30 02:44:18,230 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 663 transitions. Word has length 636 [2018-01-30 02:44:18,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:44:18,230 INFO L432 AbstractCegarLoop]: Abstraction has 654 states and 663 transitions. [2018-01-30 02:44:18,230 INFO L433 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-01-30 02:44:18,230 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 663 transitions. [2018-01-30 02:44:18,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 649 [2018-01-30 02:44:18,232 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:44:18,233 INFO L350 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:44:18,233 INFO L371 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:44:18,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1839091943, now seen corresponding path program 42 times [2018-01-30 02:44:18,233 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:44:18,233 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:44:18,233 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:18,233 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:44:18,233 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:18,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:44:18,248 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:44:19,074 INFO L134 CoverageAnalysis]: Checked inductivity of 4073 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 3839 trivial. 0 not checked. [2018-01-30 02:44:19,074 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:44:19,074 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:44:19,079 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 02:44:19,093 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:19,095 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:19,098 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:19,100 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:19,104 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:19,107 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:19,111 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:19,114 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:19,119 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:19,123 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:19,129 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:19,134 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:19,141 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:19,148 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:19,157 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:19,166 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:19,177 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:19,178 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:44:19,181 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:44:19,332 INFO L134 CoverageAnalysis]: Checked inductivity of 4073 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 3889 trivial. 0 not checked. [2018-01-30 02:44:19,349 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:44:19,349 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19] total 29 [2018-01-30 02:44:19,349 INFO L409 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-01-30 02:44:19,350 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-01-30 02:44:19,350 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=648, Unknown=0, NotChecked=0, Total=812 [2018-01-30 02:44:19,350 INFO L87 Difference]: Start difference. First operand 654 states and 663 transitions. Second operand 29 states. [2018-01-30 02:44:19,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:44:19,715 INFO L93 Difference]: Finished difference Result 1010 states and 1028 transitions. [2018-01-30 02:44:19,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-01-30 02:44:19,715 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 648 [2018-01-30 02:44:19,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:44:19,717 INFO L225 Difference]: With dead ends: 1010 [2018-01-30 02:44:19,717 INFO L226 Difference]: Without dead ends: 672 [2018-01-30 02:44:19,717 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 702 GetRequests, 641 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 769 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=862, Invalid=3044, Unknown=0, NotChecked=0, Total=3906 [2018-01-30 02:44:19,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2018-01-30 02:44:19,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 666. [2018-01-30 02:44:19,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 666 states. [2018-01-30 02:44:19,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 675 transitions. [2018-01-30 02:44:19,721 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 675 transitions. Word has length 648 [2018-01-30 02:44:19,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:44:19,721 INFO L432 AbstractCegarLoop]: Abstraction has 666 states and 675 transitions. [2018-01-30 02:44:19,722 INFO L433 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-01-30 02:44:19,723 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 675 transitions. [2018-01-30 02:44:19,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 661 [2018-01-30 02:44:19,725 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:44:19,725 INFO L350 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:44:19,725 INFO L371 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:44:19,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1081711386, now seen corresponding path program 43 times [2018-01-30 02:44:19,725 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:44:19,725 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:44:19,726 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:19,726 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:44:19,726 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:19,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:44:19,741 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:44:20,365 INFO L134 CoverageAnalysis]: Checked inductivity of 4179 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 3945 trivial. 0 not checked. [2018-01-30 02:44:20,366 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:44:20,366 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:44:20,370 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:44:20,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:44:20,423 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:44:21,097 INFO L134 CoverageAnalysis]: Checked inductivity of 4179 backedges. 0 proven. 2585 refuted. 0 times theorem prover too weak. 1594 trivial. 0 not checked. [2018-01-30 02:44:21,114 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:44:21,114 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 47] total 66 [2018-01-30 02:44:21,115 INFO L409 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-01-30 02:44:21,115 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-01-30 02:44:21,115 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=694, Invalid=3596, Unknown=0, NotChecked=0, Total=4290 [2018-01-30 02:44:21,115 INFO L87 Difference]: Start difference. First operand 666 states and 675 transitions. Second operand 66 states. [2018-01-30 02:44:22,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:44:22,542 INFO L93 Difference]: Finished difference Result 1102 states and 1121 transitions. [2018-01-30 02:44:22,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-01-30 02:44:22,542 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 660 [2018-01-30 02:44:22,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:44:22,544 INFO L225 Difference]: With dead ends: 1102 [2018-01-30 02:44:22,544 INFO L226 Difference]: Without dead ends: 694 [2018-01-30 02:44:22,545 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 742 GetRequests, 616 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3190 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=3140, Invalid=13116, Unknown=0, NotChecked=0, Total=16256 [2018-01-30 02:44:22,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2018-01-30 02:44:22,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 683. [2018-01-30 02:44:22,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 683 states. [2018-01-30 02:44:22,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 692 transitions. [2018-01-30 02:44:22,550 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 692 transitions. Word has length 660 [2018-01-30 02:44:22,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:44:22,550 INFO L432 AbstractCegarLoop]: Abstraction has 683 states and 692 transitions. [2018-01-30 02:44:22,550 INFO L433 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-01-30 02:44:22,550 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 692 transitions. [2018-01-30 02:44:22,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 678 [2018-01-30 02:44:22,552 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:44:22,552 INFO L350 BasicCegarLoop]: trace histogram [24, 23, 23, 23, 23, 23, 23, 23, 23, 23, 23, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:44:22,552 INFO L371 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:44:22,553 INFO L82 PathProgramCache]: Analyzing trace with hash 2090179548, now seen corresponding path program 44 times [2018-01-30 02:44:22,553 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:44:22,553 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:44:22,553 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:22,553 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:44:22,553 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:22,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:44:22,570 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:44:23,229 INFO L134 CoverageAnalysis]: Checked inductivity of 4479 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 4245 trivial. 0 not checked. [2018-01-30 02:44:23,229 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:44:23,229 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:44:23,243 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-30 02:44:23,260 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:23,292 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:23,298 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:44:23,302 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:44:24,113 INFO L134 CoverageAnalysis]: Checked inductivity of 4479 backedges. 0 proven. 2829 refuted. 0 times theorem prover too weak. 1650 trivial. 0 not checked. [2018-01-30 02:44:24,130 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:44:24,130 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 49] total 68 [2018-01-30 02:44:24,131 INFO L409 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-01-30 02:44:24,131 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-01-30 02:44:24,131 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=3813, Unknown=0, NotChecked=0, Total=4556 [2018-01-30 02:44:24,131 INFO L87 Difference]: Start difference. First operand 683 states and 692 transitions. Second operand 68 states. [2018-01-30 02:44:25,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:44:25,628 INFO L93 Difference]: Finished difference Result 1125 states and 1144 transitions. [2018-01-30 02:44:25,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-01-30 02:44:25,628 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 677 [2018-01-30 02:44:25,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:44:25,630 INFO L225 Difference]: With dead ends: 1125 [2018-01-30 02:44:25,630 INFO L226 Difference]: Without dead ends: 711 [2018-01-30 02:44:25,631 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 761 GetRequests, 631 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3393 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3375, Invalid=13917, Unknown=0, NotChecked=0, Total=17292 [2018-01-30 02:44:25,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2018-01-30 02:44:25,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 700. [2018-01-30 02:44:25,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 700 states. [2018-01-30 02:44:25,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 709 transitions. [2018-01-30 02:44:25,635 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 709 transitions. Word has length 677 [2018-01-30 02:44:25,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:44:25,636 INFO L432 AbstractCegarLoop]: Abstraction has 700 states and 709 transitions. [2018-01-30 02:44:25,636 INFO L433 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-01-30 02:44:25,636 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 709 transitions. [2018-01-30 02:44:25,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 695 [2018-01-30 02:44:25,638 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:44:25,638 INFO L350 BasicCegarLoop]: trace histogram [25, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:44:25,638 INFO L371 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:44:25,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1227057631, now seen corresponding path program 45 times [2018-01-30 02:44:25,639 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:44:25,639 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:44:25,639 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:25,639 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:44:25,639 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:25,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:44:25,656 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:44:26,471 INFO L134 CoverageAnalysis]: Checked inductivity of 4790 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 4500 trivial. 0 not checked. [2018-01-30 02:44:26,471 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:44:26,471 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:44:26,476 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-30 02:44:26,490 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:44:26,494 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:44:26,498 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:44:26,503 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:44:26,509 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:44:26,515 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:44:26,523 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:44:26,532 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:44:26,543 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-30 02:44:26,544 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:44:26,548 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:44:26,721 INFO L134 CoverageAnalysis]: Checked inductivity of 4790 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 4606 trivial. 0 not checked. [2018-01-30 02:44:26,738 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:44:26,739 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 19] total 31 [2018-01-30 02:44:26,739 INFO L409 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-01-30 02:44:26,739 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-01-30 02:44:26,739 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=743, Unknown=0, NotChecked=0, Total=930 [2018-01-30 02:44:26,739 INFO L87 Difference]: Start difference. First operand 700 states and 709 transitions. Second operand 31 states. [2018-01-30 02:44:27,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:44:27,329 INFO L93 Difference]: Finished difference Result 972 states and 988 transitions. [2018-01-30 02:44:27,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-01-30 02:44:27,329 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 694 [2018-01-30 02:44:27,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:44:27,330 INFO L225 Difference]: With dead ends: 972 [2018-01-30 02:44:27,330 INFO L226 Difference]: Without dead ends: 718 [2018-01-30 02:44:27,331 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 752 GetRequests, 687 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 872 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=983, Invalid=3439, Unknown=0, NotChecked=0, Total=4422 [2018-01-30 02:44:27,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2018-01-30 02:44:27,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 712. [2018-01-30 02:44:27,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 712 states. [2018-01-30 02:44:27,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 721 transitions. [2018-01-30 02:44:27,335 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 721 transitions. Word has length 694 [2018-01-30 02:44:27,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:44:27,335 INFO L432 AbstractCegarLoop]: Abstraction has 712 states and 721 transitions. [2018-01-30 02:44:27,336 INFO L433 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-01-30 02:44:27,336 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 721 transitions. [2018-01-30 02:44:27,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 707 [2018-01-30 02:44:27,338 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:44:27,338 INFO L350 BasicCegarLoop]: trace histogram [25, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 12, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:44:27,338 INFO L371 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:44:27,339 INFO L82 PathProgramCache]: Analyzing trace with hash 572761210, now seen corresponding path program 46 times [2018-01-30 02:44:27,339 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:44:27,339 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:44:27,339 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:27,339 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:44:27,339 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:27,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:44:27,356 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:44:28,119 INFO L134 CoverageAnalysis]: Checked inductivity of 4902 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 4612 trivial. 0 not checked. [2018-01-30 02:44:28,119 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:44:28,119 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:44:28,124 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-30 02:44:28,237 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:44:28,241 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:44:29,070 INFO L134 CoverageAnalysis]: Checked inductivity of 4902 backedges. 0 proven. 3084 refuted. 0 times theorem prover too weak. 1818 trivial. 0 not checked. [2018-01-30 02:44:29,090 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:44:29,090 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 51] total 72 [2018-01-30 02:44:29,090 INFO L409 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-01-30 02:44:29,091 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-01-30 02:44:29,091 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=817, Invalid=4295, Unknown=0, NotChecked=0, Total=5112 [2018-01-30 02:44:29,091 INFO L87 Difference]: Start difference. First operand 712 states and 721 transitions. Second operand 72 states. [2018-01-30 02:44:30,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:44:30,831 INFO L93 Difference]: Finished difference Result 1172 states and 1191 transitions. [2018-01-30 02:44:30,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-01-30 02:44:30,832 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 706 [2018-01-30 02:44:30,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:44:30,833 INFO L225 Difference]: With dead ends: 1172 [2018-01-30 02:44:30,833 INFO L226 Difference]: Without dead ends: 740 [2018-01-30 02:44:30,835 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 796 GetRequests, 658 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3851 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3725, Invalid=15735, Unknown=0, NotChecked=0, Total=19460 [2018-01-30 02:44:30,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2018-01-30 02:44:30,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 729. [2018-01-30 02:44:30,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 729 states. [2018-01-30 02:44:30,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 738 transitions. [2018-01-30 02:44:30,841 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 738 transitions. Word has length 706 [2018-01-30 02:44:30,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:44:30,841 INFO L432 AbstractCegarLoop]: Abstraction has 729 states and 738 transitions. [2018-01-30 02:44:30,841 INFO L433 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-01-30 02:44:30,841 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 738 transitions. [2018-01-30 02:44:30,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 724 [2018-01-30 02:44:30,844 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:44:30,844 INFO L350 BasicCegarLoop]: trace histogram [26, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:44:30,844 INFO L371 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:44:30,844 INFO L82 PathProgramCache]: Analyzing trace with hash -816661712, now seen corresponding path program 47 times [2018-01-30 02:44:30,844 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:44:30,844 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:44:30,845 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:30,845 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:44:30,845 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:30,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:44:30,869 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:44:31,612 INFO L134 CoverageAnalysis]: Checked inductivity of 5230 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 4996 trivial. 0 not checked. [2018-01-30 02:44:31,612 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:44:31,612 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:44:31,617 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-30 02:44:31,630 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:31,631 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:31,632 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:31,634 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:31,635 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:31,636 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:31,638 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:31,640 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:31,642 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:31,644 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:31,647 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:31,649 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:31,652 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:31,656 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:31,660 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:31,666 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:31,673 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:31,682 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:31,692 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:31,704 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:31,719 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:31,735 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:31,753 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:31,775 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:31,800 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:31,887 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-30 02:44:31,889 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:44:31,894 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:44:32,012 INFO L134 CoverageAnalysis]: Checked inductivity of 5230 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 4996 trivial. 0 not checked. [2018-01-30 02:44:32,031 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:44:32,031 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-01-30 02:44:32,031 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-01-30 02:44:32,031 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-01-30 02:44:32,032 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2018-01-30 02:44:32,032 INFO L87 Difference]: Start difference. First operand 729 states and 738 transitions. Second operand 21 states. [2018-01-30 02:44:32,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:44:32,256 INFO L93 Difference]: Finished difference Result 821 states and 833 transitions. [2018-01-30 02:44:32,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-01-30 02:44:32,256 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 723 [2018-01-30 02:44:32,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:44:32,257 INFO L225 Difference]: With dead ends: 821 [2018-01-30 02:44:32,257 INFO L226 Difference]: Without dead ends: 738 [2018-01-30 02:44:32,257 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 761 GetRequests, 724 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=498, Invalid=984, Unknown=0, NotChecked=0, Total=1482 [2018-01-30 02:44:32,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2018-01-30 02:44:32,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 735. [2018-01-30 02:44:32,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 735 states. [2018-01-30 02:44:32,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 744 transitions. [2018-01-30 02:44:32,261 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 744 transitions. Word has length 723 [2018-01-30 02:44:32,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:44:32,262 INFO L432 AbstractCegarLoop]: Abstraction has 735 states and 744 transitions. [2018-01-30 02:44:32,262 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-01-30 02:44:32,262 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 744 transitions. [2018-01-30 02:44:32,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 730 [2018-01-30 02:44:32,264 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:44:32,264 INFO L350 BasicCegarLoop]: trace histogram [26, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:44:32,264 INFO L371 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:44:32,265 INFO L82 PathProgramCache]: Analyzing trace with hash 119686564, now seen corresponding path program 48 times [2018-01-30 02:44:32,265 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:44:32,265 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:44:32,265 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:32,265 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:44:32,265 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:32,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:44:32,279 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:44:33,066 INFO L134 CoverageAnalysis]: Checked inductivity of 5286 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 4996 trivial. 0 not checked. [2018-01-30 02:44:33,066 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:44:33,066 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:44:33,073 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-30 02:44:33,091 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:33,092 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:33,095 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:33,098 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:33,101 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:33,104 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:33,108 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:33,111 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:33,116 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:33,120 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:33,126 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:33,131 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:33,138 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:33,145 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:33,153 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:33,162 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:33,173 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-30 02:44:33,174 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-30 02:44:33,178 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-30 02:44:33,356 INFO L134 CoverageAnalysis]: Checked inductivity of 5286 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 5102 trivial. 0 not checked. [2018-01-30 02:44:33,373 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-30 02:44:33,373 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 19] total 31 [2018-01-30 02:44:33,374 INFO L409 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-01-30 02:44:33,374 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-01-30 02:44:33,374 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=743, Unknown=0, NotChecked=0, Total=930 [2018-01-30 02:44:33,374 INFO L87 Difference]: Start difference. First operand 735 states and 744 transitions. Second operand 31 states. [2018-01-30 02:44:33,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-30 02:44:33,881 INFO L93 Difference]: Finished difference Result 1082 states and 1099 transitions. [2018-01-30 02:44:33,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-01-30 02:44:33,881 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 729 [2018-01-30 02:44:33,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-30 02:44:33,883 INFO L225 Difference]: With dead ends: 1082 [2018-01-30 02:44:33,883 INFO L226 Difference]: Without dead ends: 753 [2018-01-30 02:44:33,884 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 787 GetRequests, 722 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 872 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=983, Invalid=3439, Unknown=0, NotChecked=0, Total=4422 [2018-01-30 02:44:33,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2018-01-30 02:44:33,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 747. [2018-01-30 02:44:33,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 747 states. [2018-01-30 02:44:33,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 756 transitions. [2018-01-30 02:44:33,888 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 756 transitions. Word has length 729 [2018-01-30 02:44:33,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-30 02:44:33,889 INFO L432 AbstractCegarLoop]: Abstraction has 747 states and 756 transitions. [2018-01-30 02:44:33,889 INFO L433 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-01-30 02:44:33,889 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 756 transitions. [2018-01-30 02:44:33,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 742 [2018-01-30 02:44:33,891 INFO L342 BasicCegarLoop]: Found error trace [2018-01-30 02:44:33,892 INFO L350 BasicCegarLoop]: trace histogram [26, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-30 02:44:33,892 INFO L371 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0AssertViolation]=== [2018-01-30 02:44:33,892 INFO L82 PathProgramCache]: Analyzing trace with hash -2048028055, now seen corresponding path program 49 times [2018-01-30 02:44:33,892 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-30 02:44:33,892 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-30 02:44:33,892 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:33,892 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-30 02:44:33,893 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-30 02:44:33,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:44:33,908 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-30 02:44:34,811 INFO L134 CoverageAnalysis]: Checked inductivity of 5398 backedges. 0 proven. 352 refuted. 0 times theorem prover too weak. 5046 trivial. 0 not checked. [2018-01-30 02:44:34,811 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-30 02:44:34,811 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-30 02:44:34,816 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-30 02:44:34,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-30 02:44:34,875 INFO L270 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2018-01-30 02:44:35,234 INFO L175 TraceCheckSpWp]: Timeout while computing interpolants [2018-01-30 02:44:35,234 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-30 02:44:35,238 WARN L185 ceAbstractionStarter]: Timeout [2018-01-30 02:44:35,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.01 02:44:35 BasicIcfg [2018-01-30 02:44:35,238 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-30 02:44:35,239 INFO L168 Benchmark]: Toolchain (without parser) took 66255.88 ms. Allocated memory was 151.0 MB in the beginning and 2.0 GB in the end (delta: 1.8 GB). Free memory was 116.0 MB in the beginning and 815.4 MB in the end (delta: -699.4 MB). Peak memory consumption was 1.1 GB. Max. memory is 5.3 GB. [2018-01-30 02:44:35,240 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 151.0 MB. Free memory is still 120.7 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-30 02:44:35,240 INFO L168 Benchmark]: CACSL2BoogieTranslator took 125.17 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 107.2 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 5.3 GB. [2018-01-30 02:44:35,240 INFO L168 Benchmark]: Boogie Preprocessor took 22.43 ms. Allocated memory is still 151.0 MB. Free memory was 107.2 MB in the beginning and 105.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 5.3 GB. [2018-01-30 02:44:35,240 INFO L168 Benchmark]: RCFGBuilder took 392.07 ms. Allocated memory is still 151.0 MB. Free memory was 105.6 MB in the beginning and 86.2 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 5.3 GB. [2018-01-30 02:44:35,241 INFO L168 Benchmark]: IcfgTransformer took 13.82 ms. Allocated memory is still 151.0 MB. Free memory was 86.2 MB in the beginning and 84.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 5.3 GB. [2018-01-30 02:44:35,241 INFO L168 Benchmark]: TraceAbstraction took 65699.71 ms. Allocated memory was 151.0 MB in the beginning and 2.0 GB in the end (delta: 1.8 GB). Free memory was 84.5 MB in the beginning and 815.4 MB in the end (delta: -731.0 MB). Peak memory consumption was 1.1 GB. Max. memory is 5.3 GB. [2018-01-30 02:44:35,242 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 151.0 MB. Free memory is still 120.7 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 125.17 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 107.2 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 22.43 ms. Allocated memory is still 151.0 MB. Free memory was 107.2 MB in the beginning and 105.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 5.3 GB. * RCFGBuilder took 392.07 ms. Allocated memory is still 151.0 MB. Free memory was 105.6 MB in the beginning and 86.2 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 5.3 GB. * IcfgTransformer took 13.82 ms. Allocated memory is still 151.0 MB. Free memory was 86.2 MB in the beginning and 84.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 65699.71 ms. Allocated memory was 151.0 MB in the beginning and 2.0 GB in the end (delta: 1.8 GB). Free memory was 84.5 MB in the beginning and 815.4 MB in the end (delta: -731.0 MB). Peak memory consumption was 1.1 GB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 2]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 2). Cancelled while BasicCegarLoop was analyzing trace of length 742 with TraceHistMax 26, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 54 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 94 locations, 1 error locations. TIMEOUT Result, 65.6s OverallTime, 52 OverallIterations, 26 TraceHistogramMax, 27.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3806 SDtfs, 5633 SDslu, 46960 SDs, 0 SdLazy, 25047 SolverSat, 1526 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21603 GetRequests, 19129 SyntacticMatches, 0 SemanticMatches, 2474 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37544 ImplicationChecksByTransitivity, 31.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=747occurred in iteration=51, 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, 51 MinimizatonAttempts, 461 StatesRemovedByMinimization, 50 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 3.1s SatisfiabilityAnalysisTime, 29.5s InterpolantComputationTime, 39697 NumberOfCodeBlocks, 37885 NumberOfCodeBlocksAsserted, 341 NumberOfCheckSat, 39598 ConstructedInterpolants, 0 QuantifiedInterpolants, 25226326 SizeOfPredicates, 877 NumberOfNonLiveVariables, 24354 ConjunctsInSsa, 926 ConjunctsInUnsatCore, 99 InterpolantComputations, 3 PerfectInterpolantSequences, 149044/181358 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/standard_copy7_false-unreach-call_ground.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-Benchmark-0-2018-01-30_02-44-35-246.csv Written .csv to /home/daniel/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/standard_copy7_false-unreach-call_ground.i_svcomp-Reach-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerCTransformed.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-30_02-44-35-246.csv Completed graceful shutdown