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/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/ArraysWithLenghtAtDeclaration_false-valid-deref-write.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-acfac67 [2018-01-28 22:15:05,129 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-28 22:15:05,131 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-28 22:15:05,147 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-28 22:15:05,148 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-28 22:15:05,149 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-28 22:15:05,150 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-28 22:15:05,152 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-28 22:15:05,154 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-28 22:15:05,155 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-28 22:15:05,157 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-28 22:15:05,157 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-28 22:15:05,158 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-28 22:15:05,160 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-28 22:15:05,161 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-28 22:15:05,163 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-28 22:15:05,166 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-28 22:15:05,168 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-28 22:15:05,170 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-28 22:15:05,171 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-28 22:15:05,174 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-28 22:15:05,179 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-28 22:15:05,180 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-28 22:15:05,180 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf [2018-01-28 22:15:05,189 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-28 22:15:05,189 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-28 22:15:05,190 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-28 22:15:05,190 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-28 22:15:05,191 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-28 22:15:05,191 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-28 22:15:05,191 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-28 22:15:05,191 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-28 22:15:05,191 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-28 22:15:05,192 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-28 22:15:05,192 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-28 22:15:05,192 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-28 22:15:05,192 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-28 22:15:05,192 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-28 22:15:05,192 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-28 22:15:05,193 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-28 22:15:05,193 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-28 22:15:05,193 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-28 22:15:05,193 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-28 22:15:05,193 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-28 22:15:05,193 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-28 22:15:05,193 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-28 22:15:05,194 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-28 22:15:05,194 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-28 22:15:05,194 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-28 22:15:05,194 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-28 22:15:05,194 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-28 22:15:05,195 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-28 22:15:05,195 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-28 22:15:05,195 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-28 22:15:05,195 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-28 22:15:05,195 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-28 22:15:05,196 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-28 22:15:05,196 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-28 22:15:05,232 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-28 22:15:05,245 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-28 22:15:05,250 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-28 22:15:05,252 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-28 22:15:05,253 INFO L276 PluginConnector]: CDTParser initialized [2018-01-28 22:15:05,254 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/ArraysWithLenghtAtDeclaration_false-valid-deref-write.c [2018-01-28 22:15:05,395 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-28 22:15:05,401 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-28 22:15:05,401 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-28 22:15:05,402 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-28 22:15:05,408 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-28 22:15:05,409 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 10:15:05" (1/1) ... [2018-01-28 22:15:05,412 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b80f5ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:15:05, skipping insertion in model container [2018-01-28 22:15:05,412 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 10:15:05" (1/1) ... [2018-01-28 22:15:05,432 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-28 22:15:05,456 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-28 22:15:05,573 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-28 22:15:05,590 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-28 22:15:05,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:15:05 WrapperNode [2018-01-28 22:15:05,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-28 22:15:05,597 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-28 22:15:05,597 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-28 22:15:05,597 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-28 22:15:05,609 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:15:05" (1/1) ... [2018-01-28 22:15:05,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:15:05" (1/1) ... [2018-01-28 22:15:05,619 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:15:05" (1/1) ... [2018-01-28 22:15:05,620 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:15:05" (1/1) ... [2018-01-28 22:15:05,622 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:15:05" (1/1) ... [2018-01-28 22:15:05,625 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:15:05" (1/1) ... [2018-01-28 22:15:05,626 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:15:05" (1/1) ... [2018-01-28 22:15:05,628 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-28 22:15:05,629 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-28 22:15:05,629 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-28 22:15:05,629 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-28 22:15:05,630 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:15:05" (1/1) ... No working directory specified, using /storage/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 [2018-01-28 22:15:05,680 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-28 22:15:05,680 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-28 22:15:05,680 INFO L136 BoogieDeclarations]: Found implementation of procedure foo [2018-01-28 22:15:05,680 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-28 22:15:05,680 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-28 22:15:05,680 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-28 22:15:05,681 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-28 22:15:05,681 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-28 22:15:05,681 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-28 22:15:05,681 INFO L128 BoogieDeclarations]: Found specification of procedure foo [2018-01-28 22:15:05,681 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-28 22:15:05,681 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-28 22:15:05,681 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-28 22:15:05,893 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-28 22:15:05,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 10:15:05 BoogieIcfgContainer [2018-01-28 22:15:05,894 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-28 22:15:05,894 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-28 22:15:05,894 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-28 22:15:05,897 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-28 22:15:05,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 10:15:05" (1/3) ... [2018-01-28 22:15:05,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@246cb0e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 10:15:05, skipping insertion in model container [2018-01-28 22:15:05,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:15:05" (2/3) ... [2018-01-28 22:15:05,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@246cb0e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 10:15:05, skipping insertion in model container [2018-01-28 22:15:05,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 10:15:05" (3/3) ... [2018-01-28 22:15:05,901 INFO L107 eAbstractionObserver]: Analyzing ICFG ArraysWithLenghtAtDeclaration_false-valid-deref-write.c [2018-01-28 22:15:05,908 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-28 22:15:05,914 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-01-28 22:15:05,963 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-28 22:15:05,964 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-28 22:15:05,964 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-28 22:15:05,964 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-28 22:15:05,964 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-28 22:15:05,964 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-28 22:15:05,964 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-28 22:15:05,964 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-28 22:15:05,965 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-28 22:15:05,981 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2018-01-28 22:15:05,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-01-28 22:15:05,988 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:15:05,989 INFO L330 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 22:15:05,990 INFO L371 AbstractCegarLoop]: === Iteration 1 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-28 22:15:05,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1628091867, now seen corresponding path program 1 times [2018-01-28 22:15:05,998 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:15:05,999 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:15:06,044 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:06,045 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:15:06,045 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:06,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:15:06,096 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:15:06,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:15:06,173 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:15:06,174 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-28 22:15:06,176 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-28 22:15:06,193 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-28 22:15:06,194 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-28 22:15:06,197 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 3 states. [2018-01-28 22:15:06,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:15:06,291 INFO L93 Difference]: Finished difference Result 133 states and 155 transitions. [2018-01-28 22:15:06,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-28 22:15:06,293 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-01-28 22:15:06,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:15:06,301 INFO L225 Difference]: With dead ends: 133 [2018-01-28 22:15:06,301 INFO L226 Difference]: Without dead ends: 78 [2018-01-28 22:15:06,304 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-28 22:15:06,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-01-28 22:15:06,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 64. [2018-01-28 22:15:06,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-01-28 22:15:06,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 67 transitions. [2018-01-28 22:15:06,407 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 67 transitions. Word has length 13 [2018-01-28 22:15:06,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:15:06,408 INFO L432 AbstractCegarLoop]: Abstraction has 64 states and 67 transitions. [2018-01-28 22:15:06,408 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-28 22:15:06,408 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 67 transitions. [2018-01-28 22:15:06,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-28 22:15:06,409 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:15:06,409 INFO L330 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] [2018-01-28 22:15:06,409 INFO L371 AbstractCegarLoop]: === Iteration 2 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-28 22:15:06,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1198271325, now seen corresponding path program 1 times [2018-01-28 22:15:06,409 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:15:06,409 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:15:06,410 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:06,411 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:15:06,411 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:06,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:15:06,428 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:15:06,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:15:06,536 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:15:06,537 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-28 22:15:06,538 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-28 22:15:06,539 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-28 22:15:06,539 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-01-28 22:15:06,539 INFO L87 Difference]: Start difference. First operand 64 states and 67 transitions. Second operand 7 states. [2018-01-28 22:15:06,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:15:06,738 INFO L93 Difference]: Finished difference Result 125 states and 132 transitions. [2018-01-28 22:15:06,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-28 22:15:06,738 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2018-01-28 22:15:06,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:15:06,742 INFO L225 Difference]: With dead ends: 125 [2018-01-28 22:15:06,743 INFO L226 Difference]: Without dead ends: 124 [2018-01-28 22:15:06,744 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-01-28 22:15:06,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-01-28 22:15:06,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 67. [2018-01-28 22:15:06,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-01-28 22:15:06,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2018-01-28 22:15:06,755 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 22 [2018-01-28 22:15:06,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:15:06,755 INFO L432 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2018-01-28 22:15:06,755 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-28 22:15:06,755 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2018-01-28 22:15:06,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-28 22:15:06,756 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:15:06,757 INFO L330 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] [2018-01-28 22:15:06,757 INFO L371 AbstractCegarLoop]: === Iteration 3 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-28 22:15:06,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1508294640, now seen corresponding path program 1 times [2018-01-28 22:15:06,757 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:15:06,757 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:15:06,759 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:06,759 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:15:06,759 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:06,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:15:06,773 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:15:06,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:15:06,819 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:15:06,819 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-28 22:15:06,820 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-28 22:15:06,820 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-28 22:15:06,820 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-28 22:15:06,821 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 5 states. [2018-01-28 22:15:06,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:15:06,880 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2018-01-28 22:15:06,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-28 22:15:06,880 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-01-28 22:15:06,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:15:06,881 INFO L225 Difference]: With dead ends: 67 [2018-01-28 22:15:06,881 INFO L226 Difference]: Without dead ends: 66 [2018-01-28 22:15:06,882 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-28 22:15:06,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-01-28 22:15:06,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-01-28 22:15:06,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-01-28 22:15:06,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2018-01-28 22:15:06,890 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 23 [2018-01-28 22:15:06,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:15:06,891 INFO L432 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2018-01-28 22:15:06,891 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-28 22:15:06,891 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2018-01-28 22:15:06,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-28 22:15:06,892 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:15:06,892 INFO L330 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] [2018-01-28 22:15:06,892 INFO L371 AbstractCegarLoop]: === Iteration 4 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-28 22:15:06,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1508294641, now seen corresponding path program 1 times [2018-01-28 22:15:06,893 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:15:06,893 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:15:06,894 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:06,894 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:15:06,894 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:06,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:15:06,908 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:15:07,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:15:07,034 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:15:07,034 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-28 22:15:07,034 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-28 22:15:07,035 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-28 22:15:07,035 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-28 22:15:07,035 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 6 states. [2018-01-28 22:15:07,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:15:07,121 INFO L93 Difference]: Finished difference Result 75 states and 79 transitions. [2018-01-28 22:15:07,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-28 22:15:07,121 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2018-01-28 22:15:07,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:15:07,122 INFO L225 Difference]: With dead ends: 75 [2018-01-28 22:15:07,123 INFO L226 Difference]: Without dead ends: 74 [2018-01-28 22:15:07,123 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-01-28 22:15:07,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-01-28 22:15:07,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 67. [2018-01-28 22:15:07,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-01-28 22:15:07,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2018-01-28 22:15:07,133 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 23 [2018-01-28 22:15:07,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:15:07,133 INFO L432 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2018-01-28 22:15:07,134 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-28 22:15:07,134 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2018-01-28 22:15:07,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-28 22:15:07,135 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:15:07,135 INFO L330 BasicCegarLoop]: trace histogram [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] [2018-01-28 22:15:07,135 INFO L371 AbstractCegarLoop]: === Iteration 5 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-28 22:15:07,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1757973218, now seen corresponding path program 1 times [2018-01-28 22:15:07,136 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:15:07,136 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:15:07,137 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:07,137 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:15:07,137 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:07,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:15:07,151 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:15:07,216 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:15:07,217 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 22:15:07,217 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-28 22:15:07,229 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:15:07,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:15:07,275 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 22:15:07,301 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:15:07,325 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 22:15:07,325 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-01-28 22:15:07,325 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-28 22:15:07,326 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-28 22:15:07,326 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-28 22:15:07,326 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 5 states. [2018-01-28 22:15:07,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:15:07,374 INFO L93 Difference]: Finished difference Result 88 states and 93 transitions. [2018-01-28 22:15:07,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-28 22:15:07,375 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2018-01-28 22:15:07,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:15:07,376 INFO L225 Difference]: With dead ends: 88 [2018-01-28 22:15:07,376 INFO L226 Difference]: Without dead ends: 87 [2018-01-28 22:15:07,376 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-01-28 22:15:07,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-01-28 22:15:07,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 75. [2018-01-28 22:15:07,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-01-28 22:15:07,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2018-01-28 22:15:07,384 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 31 [2018-01-28 22:15:07,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:15:07,385 INFO L432 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2018-01-28 22:15:07,385 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-28 22:15:07,385 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2018-01-28 22:15:07,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-28 22:15:07,386 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:15:07,386 INFO L330 BasicCegarLoop]: trace histogram [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] [2018-01-28 22:15:07,386 INFO L371 AbstractCegarLoop]: === Iteration 6 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-28 22:15:07,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1337405038, now seen corresponding path program 1 times [2018-01-28 22:15:07,386 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:15:07,386 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:15:07,387 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:07,387 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:15:07,387 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:07,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:15:07,399 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:15:07,650 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:15:07,650 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 22:15:07,650 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-28 22:15:07,660 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:15:07,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:15:07,687 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 22:15:07,714 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-01-28 22:15:07,716 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-28 22:15:07,721 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:15:07,721 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-01-28 22:15:07,771 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:15:07,792 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 22:15:07,792 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-01-28 22:15:07,792 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-28 22:15:07,792 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-28 22:15:07,793 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-01-28 22:15:07,793 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand 8 states. [2018-01-28 22:15:08,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:15:08,056 INFO L93 Difference]: Finished difference Result 87 states and 92 transitions. [2018-01-28 22:15:08,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-28 22:15:08,057 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2018-01-28 22:15:08,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:15:08,058 INFO L225 Difference]: With dead ends: 87 [2018-01-28 22:15:08,058 INFO L226 Difference]: Without dead ends: 86 [2018-01-28 22:15:08,059 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-01-28 22:15:08,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-01-28 22:15:08,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 76. [2018-01-28 22:15:08,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-01-28 22:15:08,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 81 transitions. [2018-01-28 22:15:08,067 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 81 transitions. Word has length 32 [2018-01-28 22:15:08,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:15:08,067 INFO L432 AbstractCegarLoop]: Abstraction has 76 states and 81 transitions. [2018-01-28 22:15:08,068 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-28 22:15:08,068 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 81 transitions. [2018-01-28 22:15:08,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-28 22:15:08,069 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:15:08,069 INFO L330 BasicCegarLoop]: trace histogram [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] [2018-01-28 22:15:08,069 INFO L371 AbstractCegarLoop]: === Iteration 7 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-28 22:15:08,070 INFO L82 PathProgramCache]: Analyzing trace with hash 254608978, now seen corresponding path program 1 times [2018-01-28 22:15:08,070 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:15:08,073 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:15:08,074 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:08,075 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:15:08,075 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:08,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:15:08,084 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:15:08,132 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:15:08,133 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 22:15:08,133 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-28 22:15:08,146 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:15:08,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:15:08,166 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 22:15:08,237 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:15:08,258 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-28 22:15:08,258 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 10 [2018-01-28 22:15:08,258 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-28 22:15:08,259 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-28 22:15:08,259 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-01-28 22:15:08,259 INFO L87 Difference]: Start difference. First operand 76 states and 81 transitions. Second operand 10 states. [2018-01-28 22:15:08,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:15:08,395 INFO L93 Difference]: Finished difference Result 168 states and 183 transitions. [2018-01-28 22:15:08,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-28 22:15:08,396 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2018-01-28 22:15:08,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:15:08,397 INFO L225 Difference]: With dead ends: 168 [2018-01-28 22:15:08,397 INFO L226 Difference]: Without dead ends: 105 [2018-01-28 22:15:08,397 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2018-01-28 22:15:08,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-01-28 22:15:08,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 90. [2018-01-28 22:15:08,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-01-28 22:15:08,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 97 transitions. [2018-01-28 22:15:08,407 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 97 transitions. Word has length 33 [2018-01-28 22:15:08,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:15:08,407 INFO L432 AbstractCegarLoop]: Abstraction has 90 states and 97 transitions. [2018-01-28 22:15:08,407 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-28 22:15:08,407 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 97 transitions. [2018-01-28 22:15:08,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-01-28 22:15:08,410 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:15:08,410 INFO L330 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 22:15:08,410 INFO L371 AbstractCegarLoop]: === Iteration 8 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-28 22:15:08,411 INFO L82 PathProgramCache]: Analyzing trace with hash 127101827, now seen corresponding path program 2 times [2018-01-28 22:15:08,411 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:15:08,411 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:15:08,412 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:08,412 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:15:08,412 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:08,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:15:08,424 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:15:08,521 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:15:08,521 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 22:15:08,521 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-28 22:15:08,530 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-28 22:15:08,541 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 22:15:08,550 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 22:15:08,554 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-28 22:15:08,557 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 22:15:08,680 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:15:08,701 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-28 22:15:08,701 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 16 [2018-01-28 22:15:08,701 INFO L409 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-01-28 22:15:08,701 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-01-28 22:15:08,702 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2018-01-28 22:15:08,702 INFO L87 Difference]: Start difference. First operand 90 states and 97 transitions. Second operand 16 states. [2018-01-28 22:15:08,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:15:08,954 INFO L93 Difference]: Finished difference Result 208 states and 223 transitions. [2018-01-28 22:15:08,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-28 22:15:08,955 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 40 [2018-01-28 22:15:08,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:15:08,956 INFO L225 Difference]: With dead ends: 208 [2018-01-28 22:15:08,956 INFO L226 Difference]: Without dead ends: 129 [2018-01-28 22:15:08,957 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=501, Unknown=0, NotChecked=0, Total=650 [2018-01-28 22:15:08,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-01-28 22:15:08,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 118. [2018-01-28 22:15:08,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-01-28 22:15:08,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 125 transitions. [2018-01-28 22:15:08,965 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 125 transitions. Word has length 40 [2018-01-28 22:15:08,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:15:08,965 INFO L432 AbstractCegarLoop]: Abstraction has 118 states and 125 transitions. [2018-01-28 22:15:08,966 INFO L433 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-01-28 22:15:08,966 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 125 transitions. [2018-01-28 22:15:08,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-01-28 22:15:08,967 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:15:08,967 INFO L330 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2018-01-28 22:15:08,967 INFO L371 AbstractCegarLoop]: === Iteration 9 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-28 22:15:08,967 INFO L82 PathProgramCache]: Analyzing trace with hash 324897333, now seen corresponding path program 1 times [2018-01-28 22:15:08,967 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:15:08,967 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:15:08,968 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:08,968 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-28 22:15:08,968 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:08,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:15:08,984 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:15:09,090 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-01-28 22:15:09,091 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 22:15:09,091 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-28 22:15:09,099 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:15:09,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:15:09,122 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 22:15:09,177 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-01-28 22:15:09,199 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 22:15:09,199 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2018-01-28 22:15:09,200 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-28 22:15:09,200 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-28 22:15:09,200 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-01-28 22:15:09,200 INFO L87 Difference]: Start difference. First operand 118 states and 125 transitions. Second operand 12 states. [2018-01-28 22:15:09,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:15:09,354 INFO L93 Difference]: Finished difference Result 214 states and 227 transitions. [2018-01-28 22:15:09,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-01-28 22:15:09,355 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 69 [2018-01-28 22:15:09,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:15:09,356 INFO L225 Difference]: With dead ends: 214 [2018-01-28 22:15:09,356 INFO L226 Difference]: Without dead ends: 135 [2018-01-28 22:15:09,357 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2018-01-28 22:15:09,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-01-28 22:15:09,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 118. [2018-01-28 22:15:09,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-01-28 22:15:09,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 124 transitions. [2018-01-28 22:15:09,368 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 124 transitions. Word has length 69 [2018-01-28 22:15:09,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:15:09,368 INFO L432 AbstractCegarLoop]: Abstraction has 118 states and 124 transitions. [2018-01-28 22:15:09,368 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-28 22:15:09,369 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 124 transitions. [2018-01-28 22:15:09,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-01-28 22:15:09,370 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:15:09,370 INFO L330 BasicCegarLoop]: trace histogram [6, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2018-01-28 22:15:09,370 INFO L371 AbstractCegarLoop]: === Iteration 10 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-28 22:15:09,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1935939050, now seen corresponding path program 2 times [2018-01-28 22:15:09,371 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:15:09,371 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:15:09,372 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:09,372 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:15:09,372 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:09,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:15:09,390 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:15:09,485 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 48 proven. 15 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-01-28 22:15:09,485 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 22:15:09,485 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -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 [2018-01-28 22:15:09,495 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-28 22:15:09,508 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 22:15:09,521 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 22:15:09,524 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-28 22:15:09,528 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 22:15:09,553 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 48 proven. 15 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-01-28 22:15:09,587 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 22:15:09,587 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-01-28 22:15:09,587 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-28 22:15:09,588 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-28 22:15:09,588 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-01-28 22:15:09,588 INFO L87 Difference]: Start difference. First operand 118 states and 124 transitions. Second operand 7 states. [2018-01-28 22:15:09,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:15:09,796 INFO L93 Difference]: Finished difference Result 139 states and 148 transitions. [2018-01-28 22:15:09,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-28 22:15:09,797 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2018-01-28 22:15:09,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:15:09,798 INFO L225 Difference]: With dead ends: 139 [2018-01-28 22:15:09,798 INFO L226 Difference]: Without dead ends: 138 [2018-01-28 22:15:09,799 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-01-28 22:15:09,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-01-28 22:15:09,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 126. [2018-01-28 22:15:09,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-01-28 22:15:09,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 133 transitions. [2018-01-28 22:15:09,810 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 133 transitions. Word has length 78 [2018-01-28 22:15:09,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:15:09,811 INFO L432 AbstractCegarLoop]: Abstraction has 126 states and 133 transitions. [2018-01-28 22:15:09,811 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-28 22:15:09,811 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 133 transitions. [2018-01-28 22:15:09,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-01-28 22:15:09,813 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:15:09,813 INFO L330 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 4, 4, 4, 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] [2018-01-28 22:15:09,813 INFO L371 AbstractCegarLoop]: === Iteration 11 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-28 22:15:09,813 INFO L82 PathProgramCache]: Analyzing trace with hash 115431646, now seen corresponding path program 1 times [2018-01-28 22:15:09,813 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:15:09,813 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:15:09,814 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:09,814 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-28 22:15:09,814 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:09,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:15:09,831 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:15:10,119 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 58 proven. 18 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-01-28 22:15:10,120 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 22:15:10,120 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -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 [2018-01-28 22:15:10,125 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:15:10,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:15:10,144 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 22:15:10,154 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-01-28 22:15:10,155 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-28 22:15:10,160 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:15:10,160 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-01-28 22:15:10,372 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 55 proven. 17 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-01-28 22:15:10,395 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 22:15:10,395 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 21 [2018-01-28 22:15:10,396 INFO L409 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-01-28 22:15:10,396 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-01-28 22:15:10,396 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2018-01-28 22:15:10,397 INFO L87 Difference]: Start difference. First operand 126 states and 133 transitions. Second operand 22 states. [2018-01-28 22:15:11,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:15:11,093 INFO L93 Difference]: Finished difference Result 197 states and 208 transitions. [2018-01-28 22:15:11,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-01-28 22:15:11,094 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 79 [2018-01-28 22:15:11,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:15:11,095 INFO L225 Difference]: With dead ends: 197 [2018-01-28 22:15:11,095 INFO L226 Difference]: Without dead ends: 192 [2018-01-28 22:15:11,096 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 71 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 569 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=385, Invalid=1777, Unknown=0, NotChecked=0, Total=2162 [2018-01-28 22:15:11,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-01-28 22:15:11,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 143. [2018-01-28 22:15:11,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-01-28 22:15:11,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 150 transitions. [2018-01-28 22:15:11,108 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 150 transitions. Word has length 79 [2018-01-28 22:15:11,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:15:11,108 INFO L432 AbstractCegarLoop]: Abstraction has 143 states and 150 transitions. [2018-01-28 22:15:11,108 INFO L433 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-01-28 22:15:11,108 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 150 transitions. [2018-01-28 22:15:11,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-01-28 22:15:11,109 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:15:11,110 INFO L330 BasicCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 22:15:11,110 INFO L371 AbstractCegarLoop]: === Iteration 12 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-28 22:15:11,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1952094074, now seen corresponding path program 1 times [2018-01-28 22:15:11,110 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:15:11,110 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:15:11,111 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:11,111 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:15:11,111 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:11,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:15:11,124 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:15:11,239 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 44 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-01-28 22:15:11,240 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 22:15:11,240 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-28 22:15:11,250 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:15:11,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:15:11,273 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 22:15:11,370 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 48 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-01-28 22:15:11,391 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 22:15:11,391 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2018-01-28 22:15:11,391 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-28 22:15:11,391 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-28 22:15:11,392 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2018-01-28 22:15:11,392 INFO L87 Difference]: Start difference. First operand 143 states and 150 transitions. Second operand 15 states. [2018-01-28 22:15:11,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:15:11,631 INFO L93 Difference]: Finished difference Result 249 states and 262 transitions. [2018-01-28 22:15:11,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-01-28 22:15:11,632 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 80 [2018-01-28 22:15:11,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:15:11,633 INFO L225 Difference]: With dead ends: 249 [2018-01-28 22:15:11,633 INFO L226 Difference]: Without dead ends: 168 [2018-01-28 22:15:11,633 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2018-01-28 22:15:11,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2018-01-28 22:15:11,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 152. [2018-01-28 22:15:11,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2018-01-28 22:15:11,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 157 transitions. [2018-01-28 22:15:11,641 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 157 transitions. Word has length 80 [2018-01-28 22:15:11,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:15:11,641 INFO L432 AbstractCegarLoop]: Abstraction has 152 states and 157 transitions. [2018-01-28 22:15:11,641 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-28 22:15:11,641 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 157 transitions. [2018-01-28 22:15:11,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-01-28 22:15:11,642 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:15:11,642 INFO L330 BasicCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2018-01-28 22:15:11,642 INFO L371 AbstractCegarLoop]: === Iteration 13 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-28 22:15:11,643 INFO L82 PathProgramCache]: Analyzing trace with hash -310174977, now seen corresponding path program 2 times [2018-01-28 22:15:11,643 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:15:11,643 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:15:11,644 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:11,644 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:15:11,644 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:11,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:15:11,657 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:15:11,738 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-01-28 22:15:11,738 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 22:15:11,738 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-28 22:15:11,746 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-28 22:15:11,754 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 22:15:11,763 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 22:15:11,764 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-28 22:15:11,766 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 22:15:11,848 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 68 proven. 13 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-01-28 22:15:11,868 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 22:15:11,869 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12] total 17 [2018-01-28 22:15:11,869 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-28 22:15:11,869 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-28 22:15:11,870 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2018-01-28 22:15:11,870 INFO L87 Difference]: Start difference. First operand 152 states and 157 transitions. Second operand 17 states. [2018-01-28 22:15:12,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:15:12,136 INFO L93 Difference]: Finished difference Result 263 states and 273 transitions. [2018-01-28 22:15:12,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-01-28 22:15:12,137 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 89 [2018-01-28 22:15:12,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:15:12,138 INFO L225 Difference]: With dead ends: 263 [2018-01-28 22:15:12,138 INFO L226 Difference]: Without dead ends: 185 [2018-01-28 22:15:12,138 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=203, Invalid=919, Unknown=0, NotChecked=0, Total=1122 [2018-01-28 22:15:12,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-01-28 22:15:12,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 160. [2018-01-28 22:15:12,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2018-01-28 22:15:12,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 164 transitions. [2018-01-28 22:15:12,147 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 164 transitions. Word has length 89 [2018-01-28 22:15:12,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:15:12,147 INFO L432 AbstractCegarLoop]: Abstraction has 160 states and 164 transitions. [2018-01-28 22:15:12,147 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-28 22:15:12,147 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 164 transitions. [2018-01-28 22:15:12,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-01-28 22:15:12,148 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:15:12,148 INFO L330 BasicCegarLoop]: trace histogram [7, 5, 5, 5, 5, 5, 5, 5, 5, 3, 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] [2018-01-28 22:15:12,148 INFO L371 AbstractCegarLoop]: === Iteration 14 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-28 22:15:12,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1033388843, now seen corresponding path program 1 times [2018-01-28 22:15:12,149 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:15:12,149 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:15:12,149 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:12,149 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-28 22:15:12,149 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:12,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:15:12,164 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:15:12,250 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-01-28 22:15:12,251 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 22:15:12,251 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-28 22:15:12,259 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:15:12,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:15:12,280 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 22:15:12,301 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-01-28 22:15:12,328 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 22:15:12,328 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2018-01-28 22:15:12,329 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-28 22:15:12,329 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-28 22:15:12,329 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-01-28 22:15:12,329 INFO L87 Difference]: Start difference. First operand 160 states and 164 transitions. Second operand 9 states. [2018-01-28 22:15:12,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:15:12,384 INFO L93 Difference]: Finished difference Result 203 states and 210 transitions. [2018-01-28 22:15:12,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-28 22:15:12,384 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 106 [2018-01-28 22:15:12,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:15:12,385 INFO L225 Difference]: With dead ends: 203 [2018-01-28 22:15:12,386 INFO L226 Difference]: Without dead ends: 183 [2018-01-28 22:15:12,386 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2018-01-28 22:15:12,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-01-28 22:15:12,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 168. [2018-01-28 22:15:12,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2018-01-28 22:15:12,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 172 transitions. [2018-01-28 22:15:12,394 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 172 transitions. Word has length 106 [2018-01-28 22:15:12,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:15:12,395 INFO L432 AbstractCegarLoop]: Abstraction has 168 states and 172 transitions. [2018-01-28 22:15:12,395 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-28 22:15:12,395 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 172 transitions. [2018-01-28 22:15:12,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-01-28 22:15:12,396 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:15:12,396 INFO L330 BasicCegarLoop]: trace histogram [11, 9, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 22:15:12,396 INFO L371 AbstractCegarLoop]: === Iteration 15 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-28 22:15:12,396 INFO L82 PathProgramCache]: Analyzing trace with hash -2126374397, now seen corresponding path program 3 times [2018-01-28 22:15:12,396 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:15:12,396 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:15:12,397 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:12,397 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:15:12,397 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:12,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:15:12,414 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:15:12,586 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 166 proven. 36 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2018-01-28 22:15:12,586 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 22:15:12,586 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-28 22:15:12,594 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-28 22:15:12,605 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 22:15:12,610 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 22:15:12,615 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 22:15:12,617 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-28 22:15:12,620 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 22:15:12,884 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 176 proven. 37 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2018-01-28 22:15:12,904 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 22:15:12,904 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 14] total 21 [2018-01-28 22:15:12,905 INFO L409 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-01-28 22:15:12,905 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-01-28 22:15:12,905 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=408, Unknown=0, NotChecked=0, Total=462 [2018-01-28 22:15:12,905 INFO L87 Difference]: Start difference. First operand 168 states and 172 transitions. Second operand 22 states. [2018-01-28 22:15:13,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:15:13,497 INFO L93 Difference]: Finished difference Result 274 states and 285 transitions. [2018-01-28 22:15:13,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-01-28 22:15:13,497 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 134 [2018-01-28 22:15:13,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:15:13,499 INFO L225 Difference]: With dead ends: 274 [2018-01-28 22:15:13,499 INFO L226 Difference]: Without dead ends: 273 [2018-01-28 22:15:13,500 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=353, Invalid=2097, Unknown=0, NotChecked=0, Total=2450 [2018-01-28 22:15:13,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2018-01-28 22:15:13,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 217. [2018-01-28 22:15:13,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-01-28 22:15:13,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 224 transitions. [2018-01-28 22:15:13,511 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 224 transitions. Word has length 134 [2018-01-28 22:15:13,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:15:13,511 INFO L432 AbstractCegarLoop]: Abstraction has 217 states and 224 transitions. [2018-01-28 22:15:13,511 INFO L433 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-01-28 22:15:13,511 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 224 transitions. [2018-01-28 22:15:13,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-01-28 22:15:13,512 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:15:13,512 INFO L330 BasicCegarLoop]: trace histogram [11, 9, 9, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 22:15:13,512 INFO L371 AbstractCegarLoop]: === Iteration 16 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-28 22:15:13,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1493096815, now seen corresponding path program 2 times [2018-01-28 22:15:13,513 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:15:13,513 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:15:13,513 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:13,513 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-28 22:15:13,514 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:13,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:15:13,528 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:15:13,763 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 181 proven. 39 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2018-01-28 22:15:13,763 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 22:15:13,763 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-28 22:15:13,768 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-28 22:15:13,778 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 22:15:13,789 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 22:15:13,791 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-28 22:15:13,794 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 22:15:13,797 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-01-28 22:15:13,797 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-28 22:15:13,803 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:15:13,803 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-01-28 22:15:13,886 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 181 proven. 39 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2018-01-28 22:15:13,905 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 22:15:13,906 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 12 [2018-01-28 22:15:13,906 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-28 22:15:13,906 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-28 22:15:13,906 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2018-01-28 22:15:13,906 INFO L87 Difference]: Start difference. First operand 217 states and 224 transitions. Second operand 13 states. [2018-01-28 22:15:14,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:15:14,177 INFO L93 Difference]: Finished difference Result 260 states and 270 transitions. [2018-01-28 22:15:14,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-01-28 22:15:14,198 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 135 [2018-01-28 22:15:14,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:15:14,199 INFO L225 Difference]: With dead ends: 260 [2018-01-28 22:15:14,199 INFO L226 Difference]: Without dead ends: 259 [2018-01-28 22:15:14,200 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 129 SyntacticMatches, 6 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2018-01-28 22:15:14,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-01-28 22:15:14,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 227. [2018-01-28 22:15:14,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-01-28 22:15:14,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 235 transitions. [2018-01-28 22:15:14,213 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 235 transitions. Word has length 135 [2018-01-28 22:15:14,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:15:14,214 INFO L432 AbstractCegarLoop]: Abstraction has 227 states and 235 transitions. [2018-01-28 22:15:14,214 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-28 22:15:14,214 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 235 transitions. [2018-01-28 22:15:14,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-01-28 22:15:14,215 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:15:14,215 INFO L330 BasicCegarLoop]: trace histogram [12, 10, 10, 9, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 22:15:14,215 INFO L371 AbstractCegarLoop]: === Iteration 17 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-28 22:15:14,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1902632690, now seen corresponding path program 3 times [2018-01-28 22:15:14,216 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:15:14,216 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:15:14,216 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:14,216 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-28 22:15:14,216 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:14,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:15:14,234 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:15:14,622 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 275 proven. 26 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2018-01-28 22:15:14,623 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 22:15:14,623 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-28 22:15:14,629 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-28 22:15:14,641 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 22:15:14,645 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 22:15:14,651 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 22:15:14,662 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-28 22:15:14,665 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 22:15:14,669 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-01-28 22:15:14,669 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-28 22:15:14,671 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:15:14,671 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-01-28 22:15:14,948 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 253 proven. 26 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2018-01-28 22:15:14,968 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 22:15:14,968 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 30 [2018-01-28 22:15:14,969 INFO L409 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-01-28 22:15:14,969 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-01-28 22:15:14,969 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=781, Unknown=0, NotChecked=0, Total=930 [2018-01-28 22:15:14,969 INFO L87 Difference]: Start difference. First operand 227 states and 235 transitions. Second operand 31 states. [2018-01-28 22:15:15,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:15:15,412 INFO L93 Difference]: Finished difference Result 239 states and 247 transitions. [2018-01-28 22:15:15,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-01-28 22:15:15,412 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 144 [2018-01-28 22:15:15,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:15:15,414 INFO L225 Difference]: With dead ends: 239 [2018-01-28 22:15:15,414 INFO L226 Difference]: Without dead ends: 238 [2018-01-28 22:15:15,416 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 127 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=421, Invalid=1741, Unknown=0, NotChecked=0, Total=2162 [2018-01-28 22:15:15,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2018-01-28 22:15:15,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 216. [2018-01-28 22:15:15,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2018-01-28 22:15:15,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 222 transitions. [2018-01-28 22:15:15,433 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 222 transitions. Word has length 144 [2018-01-28 22:15:15,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:15:15,433 INFO L432 AbstractCegarLoop]: Abstraction has 216 states and 222 transitions. [2018-01-28 22:15:15,433 INFO L433 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-01-28 22:15:15,434 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 222 transitions. [2018-01-28 22:15:15,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-01-28 22:15:15,435 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:15:15,435 INFO L330 BasicCegarLoop]: trace histogram [11, 8, 8, 8, 8, 8, 8, 8, 8, 4, 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] [2018-01-28 22:15:15,435 INFO L371 AbstractCegarLoop]: === Iteration 18 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-28 22:15:15,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1502561417, now seen corresponding path program 2 times [2018-01-28 22:15:15,435 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:15:15,436 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:15:15,436 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:15,437 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-28 22:15:15,437 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:15,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:15:15,458 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:15:15,587 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2018-01-28 22:15:15,587 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 22:15:15,587 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-28 22:15:15,593 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-28 22:15:15,604 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 22:15:15,605 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-28 22:15:15,607 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 22:15:15,630 INFO L700 Elim1Store]: detected not equals via solver [2018-01-28 22:15:15,633 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2018-01-28 22:15:15,634 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-28 22:15:15,636 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-01-28 22:15:15,636 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2018-01-28 22:15:15,720 INFO L700 Elim1Store]: detected not equals via solver [2018-01-28 22:15:15,721 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2018-01-28 22:15:15,721 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-28 22:15:15,723 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-01-28 22:15:15,723 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2018-01-28 22:15:15,764 INFO L700 Elim1Store]: detected not equals via solver [2018-01-28 22:15:15,765 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2018-01-28 22:15:15,766 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-28 22:15:15,771 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-01-28 22:15:15,772 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2018-01-28 22:15:15,820 WARN L1033 $PredicateComparison]: unable to prove that (exists ((|main_~#mask~3.base| Int)) (and (= |c_#valid| (store |c_old(#valid)| |main_~#mask~3.base| 0)) (= 0 (select |c_old(#valid)| |main_~#mask~3.base|)))) is different from true [2018-01-28 22:15:15,860 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked. [2018-01-28 22:15:15,882 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-28 22:15:15,882 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2018-01-28 22:15:15,883 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-28 22:15:15,883 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-28 22:15:15,883 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=102, Unknown=1, NotChecked=20, Total=156 [2018-01-28 22:15:15,883 INFO L87 Difference]: Start difference. First operand 216 states and 222 transitions. Second operand 13 states. [2018-01-28 22:15:16,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:15:16,224 INFO L93 Difference]: Finished difference Result 258 states and 269 transitions. [2018-01-28 22:15:16,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-01-28 22:15:16,225 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 153 [2018-01-28 22:15:16,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:15:16,226 INFO L225 Difference]: With dead ends: 258 [2018-01-28 22:15:16,226 INFO L226 Difference]: Without dead ends: 226 [2018-01-28 22:15:16,227 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 146 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=161, Invalid=442, Unknown=1, NotChecked=46, Total=650 [2018-01-28 22:15:16,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-01-28 22:15:16,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 216. [2018-01-28 22:15:16,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2018-01-28 22:15:16,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 221 transitions. [2018-01-28 22:15:16,245 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 221 transitions. Word has length 153 [2018-01-28 22:15:16,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:15:16,245 INFO L432 AbstractCegarLoop]: Abstraction has 216 states and 221 transitions. [2018-01-28 22:15:16,245 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-28 22:15:16,246 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 221 transitions. [2018-01-28 22:15:16,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-01-28 22:15:16,247 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:15:16,247 INFO L330 BasicCegarLoop]: trace histogram [16, 13, 12, 12, 12, 12, 12, 12, 12, 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] [2018-01-28 22:15:16,247 INFO L371 AbstractCegarLoop]: === Iteration 19 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-28 22:15:16,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1190877366, now seen corresponding path program 4 times [2018-01-28 22:15:16,248 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:15:16,248 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:15:16,249 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:16,249 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-28 22:15:16,249 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:16,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:15:16,271 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:15:16,551 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 357 proven. 75 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2018-01-28 22:15:16,551 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 22:15:16,551 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-28 22:15:16,557 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-28 22:15:16,590 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-28 22:15:16,594 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 22:15:16,905 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 572 proven. 33 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2018-01-28 22:15:16,927 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 22:15:16,927 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2018-01-28 22:15:16,928 INFO L409 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-01-28 22:15:16,928 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-01-28 22:15:16,928 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=833, Unknown=0, NotChecked=0, Total=930 [2018-01-28 22:15:16,929 INFO L87 Difference]: Start difference. First operand 216 states and 221 transitions. Second operand 31 states. [2018-01-28 22:15:18,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:15:18,507 INFO L93 Difference]: Finished difference Result 418 states and 433 transitions. [2018-01-28 22:15:18,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-01-28 22:15:18,508 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 190 [2018-01-28 22:15:18,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:15:18,509 INFO L225 Difference]: With dead ends: 418 [2018-01-28 22:15:18,509 INFO L226 Difference]: Without dead ends: 329 [2018-01-28 22:15:18,511 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2762 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1254, Invalid=7118, Unknown=0, NotChecked=0, Total=8372 [2018-01-28 22:15:18,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2018-01-28 22:15:18,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 283. [2018-01-28 22:15:18,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2018-01-28 22:15:18,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 290 transitions. [2018-01-28 22:15:18,533 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 290 transitions. Word has length 190 [2018-01-28 22:15:18,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:15:18,534 INFO L432 AbstractCegarLoop]: Abstraction has 283 states and 290 transitions. [2018-01-28 22:15:18,534 INFO L433 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-01-28 22:15:18,534 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 290 transitions. [2018-01-28 22:15:18,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-01-28 22:15:18,535 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:15:18,536 INFO L330 BasicCegarLoop]: trace histogram [17, 14, 14, 13, 13, 13, 13, 13, 13, 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] [2018-01-28 22:15:18,536 INFO L371 AbstractCegarLoop]: === Iteration 20 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-28 22:15:18,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1671045217, now seen corresponding path program 4 times [2018-01-28 22:15:18,536 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:15:18,536 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:15:18,537 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:18,537 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-28 22:15:18,537 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:18,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:15:18,559 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:15:19,204 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 405 proven. 79 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2018-01-28 22:15:19,204 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 22:15:19,307 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-28 22:15:19,314 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-28 22:15:19,361 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-28 22:15:19,366 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 22:15:19,368 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-01-28 22:15:19,369 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-28 22:15:19,371 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:15:19,371 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-01-28 22:15:19,789 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 323 proven. 336 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2018-01-28 22:15:19,816 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 22:15:19,816 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18] total 32 [2018-01-28 22:15:19,816 INFO L409 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-01-28 22:15:19,816 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-01-28 22:15:19,817 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=901, Unknown=0, NotChecked=0, Total=1056 [2018-01-28 22:15:19,817 INFO L87 Difference]: Start difference. First operand 283 states and 290 transitions. Second operand 33 states. [2018-01-28 22:15:21,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:15:21,434 INFO L93 Difference]: Finished difference Result 377 states and 391 transitions. [2018-01-28 22:15:21,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-01-28 22:15:21,434 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 200 [2018-01-28 22:15:21,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:15:21,436 INFO L225 Difference]: With dead ends: 377 [2018-01-28 22:15:21,436 INFO L226 Difference]: Without dead ends: 375 [2018-01-28 22:15:21,438 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 180 SyntacticMatches, 5 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1935 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=959, Invalid=5047, Unknown=0, NotChecked=0, Total=6006 [2018-01-28 22:15:21,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2018-01-28 22:15:21,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 291. [2018-01-28 22:15:21,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2018-01-28 22:15:21,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 298 transitions. [2018-01-28 22:15:21,459 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 298 transitions. Word has length 200 [2018-01-28 22:15:21,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:15:21,459 INFO L432 AbstractCegarLoop]: Abstraction has 291 states and 298 transitions. [2018-01-28 22:15:21,459 INFO L433 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-01-28 22:15:21,460 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 298 transitions. [2018-01-28 22:15:21,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-01-28 22:15:21,461 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:15:21,461 INFO L330 BasicCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 13, 13, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 22:15:21,461 INFO L371 AbstractCegarLoop]: === Iteration 21 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-28 22:15:21,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1940595211, now seen corresponding path program 1 times [2018-01-28 22:15:21,462 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:15:21,462 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:15:21,462 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:21,463 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-28 22:15:21,463 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:21,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:15:21,481 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:15:21,576 INFO L134 CoverageAnalysis]: Checked inductivity of 937 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 934 trivial. 0 not checked. [2018-01-28 22:15:21,576 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 22:15:21,576 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-28 22:15:21,585 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:15:21,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:15:21,643 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 22:15:21,961 INFO L134 CoverageAnalysis]: Checked inductivity of 937 backedges. 458 proven. 62 refuted. 0 times theorem prover too weak. 417 trivial. 0 not checked. [2018-01-28 22:15:21,981 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 22:15:21,981 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 20] total 23 [2018-01-28 22:15:21,982 INFO L409 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-01-28 22:15:21,982 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-01-28 22:15:21,982 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=426, Unknown=0, NotChecked=0, Total=506 [2018-01-28 22:15:21,982 INFO L87 Difference]: Start difference. First operand 291 states and 298 transitions. Second operand 23 states. [2018-01-28 22:15:22,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:15:22,601 INFO L93 Difference]: Finished difference Result 460 states and 476 transitions. [2018-01-28 22:15:22,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-01-28 22:15:22,602 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 220 [2018-01-28 22:15:22,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:15:22,605 INFO L225 Difference]: With dead ends: 460 [2018-01-28 22:15:22,605 INFO L226 Difference]: Without dead ends: 364 [2018-01-28 22:15:22,606 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 704 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=420, Invalid=2232, Unknown=0, NotChecked=0, Total=2652 [2018-01-28 22:15:22,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2018-01-28 22:15:22,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 307. [2018-01-28 22:15:22,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2018-01-28 22:15:22,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 313 transitions. [2018-01-28 22:15:22,636 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 313 transitions. Word has length 220 [2018-01-28 22:15:22,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:15:22,636 INFO L432 AbstractCegarLoop]: Abstraction has 307 states and 313 transitions. [2018-01-28 22:15:22,636 INFO L433 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-01-28 22:15:22,636 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 313 transitions. [2018-01-28 22:15:22,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-01-28 22:15:22,637 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:15:22,637 INFO L330 BasicCegarLoop]: trace histogram [18, 14, 14, 14, 14, 14, 14, 14, 14, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 22:15:22,637 INFO L371 AbstractCegarLoop]: === Iteration 22 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-28 22:15:22,637 INFO L82 PathProgramCache]: Analyzing trace with hash 111205615, now seen corresponding path program 2 times [2018-01-28 22:15:22,637 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:15:22,638 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:15:22,638 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:22,638 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:15:22,638 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:22,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:15:22,660 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:15:22,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1072 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 1059 trivial. 0 not checked. [2018-01-28 22:15:22,834 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 22:15:22,834 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-28 22:15:22,841 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-28 22:15:22,859 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 22:15:22,894 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 22:15:22,900 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-28 22:15:22,906 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 22:15:23,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1072 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 1004 trivial. 0 not checked. [2018-01-28 22:15:23,021 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 22:15:23,021 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11] total 17 [2018-01-28 22:15:23,021 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-28 22:15:23,022 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-28 22:15:23,022 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2018-01-28 22:15:23,022 INFO L87 Difference]: Start difference. First operand 307 states and 313 transitions. Second operand 17 states. [2018-01-28 22:15:23,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:15:23,204 INFO L93 Difference]: Finished difference Result 343 states and 352 transitions. [2018-01-28 22:15:23,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-01-28 22:15:23,204 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 236 [2018-01-28 22:15:23,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:15:23,206 INFO L225 Difference]: With dead ends: 343 [2018-01-28 22:15:23,206 INFO L226 Difference]: Without dead ends: 303 [2018-01-28 22:15:23,207 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=190, Invalid=740, Unknown=0, NotChecked=0, Total=930 [2018-01-28 22:15:23,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2018-01-28 22:15:23,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 288. [2018-01-28 22:15:23,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2018-01-28 22:15:23,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 293 transitions. [2018-01-28 22:15:23,219 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 293 transitions. Word has length 236 [2018-01-28 22:15:23,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:15:23,220 INFO L432 AbstractCegarLoop]: Abstraction has 288 states and 293 transitions. [2018-01-28 22:15:23,220 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-28 22:15:23,220 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 293 transitions. [2018-01-28 22:15:23,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-01-28 22:15:23,221 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:15:23,221 INFO L330 BasicCegarLoop]: trace histogram [25, 21, 20, 20, 20, 20, 20, 20, 20, 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] [2018-01-28 22:15:23,221 INFO L371 AbstractCegarLoop]: === Iteration 23 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-28 22:15:23,221 INFO L82 PathProgramCache]: Analyzing trace with hash -435929309, now seen corresponding path program 5 times [2018-01-28 22:15:23,221 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:15:23,221 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:15:23,222 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:23,222 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-28 22:15:23,222 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:23,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:15:23,240 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:15:23,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2094 backedges. 874 proven. 119 refuted. 0 times theorem prover too weak. 1101 trivial. 0 not checked. [2018-01-28 22:15:23,634 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 22:15:23,634 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-28 22:15:23,640 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-28 22:15:23,662 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 22:15:23,684 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 22:15:23,695 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 22:15:23,707 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 22:15:23,718 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 22:15:23,728 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 22:15:23,740 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 22:15:23,742 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-28 22:15:23,749 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 22:15:24,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2094 backedges. 1027 proven. 76 refuted. 0 times theorem prover too weak. 991 trivial. 0 not checked. [2018-01-28 22:15:24,255 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 22:15:24,255 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 26] total 40 [2018-01-28 22:15:24,255 INFO L409 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-01-28 22:15:24,255 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-01-28 22:15:24,256 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1365, Unknown=0, NotChecked=0, Total=1560 [2018-01-28 22:15:24,256 INFO L87 Difference]: Start difference. First operand 288 states and 293 transitions. Second operand 40 states. [2018-01-28 22:15:25,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:15:25,074 INFO L93 Difference]: Finished difference Result 653 states and 674 transitions. [2018-01-28 22:15:25,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-01-28 22:15:25,074 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 282 [2018-01-28 22:15:25,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:15:25,075 INFO L225 Difference]: With dead ends: 653 [2018-01-28 22:15:25,076 INFO L226 Difference]: Without dead ends: 442 [2018-01-28 22:15:25,077 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1496 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=877, Invalid=4525, Unknown=0, NotChecked=0, Total=5402 [2018-01-28 22:15:25,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2018-01-28 22:15:25,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 416. [2018-01-28 22:15:25,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2018-01-28 22:15:25,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 425 transitions. [2018-01-28 22:15:25,095 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 425 transitions. Word has length 282 [2018-01-28 22:15:25,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:15:25,095 INFO L432 AbstractCegarLoop]: Abstraction has 416 states and 425 transitions. [2018-01-28 22:15:25,095 INFO L433 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-01-28 22:15:25,095 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 425 transitions. [2018-01-28 22:15:25,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2018-01-28 22:15:25,097 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:15:25,097 INFO L330 BasicCegarLoop]: trace histogram [31, 26, 25, 25, 25, 25, 25, 25, 25, 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] [2018-01-28 22:15:25,097 INFO L371 AbstractCegarLoop]: === Iteration 24 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-28 22:15:25,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1110409045, now seen corresponding path program 6 times [2018-01-28 22:15:25,097 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:15:25,097 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:15:25,098 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:25,098 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-28 22:15:25,098 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:25,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:15:25,129 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:15:25,804 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 1178 proven. 153 refuted. 0 times theorem prover too weak. 1949 trivial. 0 not checked. [2018-01-28 22:15:25,805 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 22:15:25,805 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-28 22:15:25,811 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-28 22:15:25,832 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 22:15:25,838 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 22:15:25,843 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 22:15:25,851 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 22:15:25,858 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 22:15:25,869 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 22:15:25,878 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 22:15:25,890 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 22:15:25,893 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-28 22:15:25,902 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 22:15:26,324 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 1227 proven. 792 refuted. 0 times theorem prover too weak. 1261 trivial. 0 not checked. [2018-01-28 22:15:26,345 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 22:15:26,345 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 27] total 45 [2018-01-28 22:15:26,345 INFO L409 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-01-28 22:15:26,346 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-01-28 22:15:26,346 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1909, Unknown=0, NotChecked=0, Total=2070 [2018-01-28 22:15:26,346 INFO L87 Difference]: Start difference. First operand 416 states and 425 transitions. Second operand 46 states. [2018-01-28 22:15:28,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:15:28,636 INFO L93 Difference]: Finished difference Result 665 states and 694 transitions. [2018-01-28 22:15:28,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-01-28 22:15:28,636 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 347 [2018-01-28 22:15:28,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:15:28,640 INFO L225 Difference]: With dead ends: 665 [2018-01-28 22:15:28,640 INFO L226 Difference]: Without dead ends: 664 [2018-01-28 22:15:28,646 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4148 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1840, Invalid=11500, Unknown=0, NotChecked=0, Total=13340 [2018-01-28 22:15:28,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2018-01-28 22:15:28,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 533. [2018-01-28 22:15:28,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 533 states. [2018-01-28 22:15:28,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 550 transitions. [2018-01-28 22:15:28,679 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 550 transitions. Word has length 347 [2018-01-28 22:15:28,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:15:28,680 INFO L432 AbstractCegarLoop]: Abstraction has 533 states and 550 transitions. [2018-01-28 22:15:28,680 INFO L433 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-01-28 22:15:28,680 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 550 transitions. [2018-01-28 22:15:28,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2018-01-28 22:15:28,683 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:15:28,684 INFO L330 BasicCegarLoop]: trace histogram [31, 26, 26, 25, 25, 25, 25, 25, 25, 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] [2018-01-28 22:15:28,684 INFO L371 AbstractCegarLoop]: === Iteration 25 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-28 22:15:28,684 INFO L82 PathProgramCache]: Analyzing trace with hash 62942079, now seen corresponding path program 5 times [2018-01-28 22:15:28,684 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:15:28,684 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:15:28,685 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:28,685 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-28 22:15:28,686 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:28,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:15:28,720 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:15:29,542 INFO L134 CoverageAnalysis]: Checked inductivity of 3305 backedges. 1197 proven. 159 refuted. 0 times theorem prover too weak. 1949 trivial. 0 not checked. [2018-01-28 22:15:29,543 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 22:15:29,554 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-28 22:15:29,559 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-28 22:15:29,579 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 22:15:29,599 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 22:15:29,621 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 22:15:29,641 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 22:15:29,660 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 22:15:29,669 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 22:15:29,678 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 22:15:29,680 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-28 22:15:29,688 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 22:15:30,663 INFO L134 CoverageAnalysis]: Checked inductivity of 3305 backedges. 1937 proven. 499 refuted. 0 times theorem prover too weak. 869 trivial. 0 not checked. [2018-01-28 22:15:30,694 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 22:15:30,695 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 29] total 46 [2018-01-28 22:15:30,695 INFO L409 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-01-28 22:15:30,695 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-01-28 22:15:30,696 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1899, Unknown=0, NotChecked=0, Total=2070 [2018-01-28 22:15:30,696 INFO L87 Difference]: Start difference. First operand 533 states and 550 transitions. Second operand 46 states. [2018-01-28 22:15:32,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:15:32,325 INFO L93 Difference]: Finished difference Result 737 states and 767 transitions. [2018-01-28 22:15:32,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-01-28 22:15:32,326 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 348 [2018-01-28 22:15:32,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:15:32,328 INFO L225 Difference]: With dead ends: 737 [2018-01-28 22:15:32,328 INFO L226 Difference]: Without dead ends: 559 [2018-01-28 22:15:32,330 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2241 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1006, Invalid=6650, Unknown=0, NotChecked=0, Total=7656 [2018-01-28 22:15:32,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2018-01-28 22:15:32,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 536. [2018-01-28 22:15:32,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2018-01-28 22:15:32,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 550 transitions. [2018-01-28 22:15:32,355 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 550 transitions. Word has length 348 [2018-01-28 22:15:32,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:15:32,355 INFO L432 AbstractCegarLoop]: Abstraction has 536 states and 550 transitions. [2018-01-28 22:15:32,355 INFO L433 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-01-28 22:15:32,356 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 550 transitions. [2018-01-28 22:15:32,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-01-28 22:15:32,357 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:15:32,358 INFO L330 BasicCegarLoop]: trace histogram [33, 28, 28, 27, 27, 27, 27, 27, 27, 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] [2018-01-28 22:15:32,358 INFO L371 AbstractCegarLoop]: === Iteration 26 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-28 22:15:32,358 INFO L82 PathProgramCache]: Analyzing trace with hash 522985253, now seen corresponding path program 6 times [2018-01-28 22:15:32,358 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:15:32,358 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:15:32,359 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:32,359 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-28 22:15:32,359 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:32,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:15:32,382 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:15:33,081 INFO L134 CoverageAnalysis]: Checked inductivity of 3792 backedges. 1489 proven. 134 refuted. 0 times theorem prover too weak. 2169 trivial. 0 not checked. [2018-01-28 22:15:33,082 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 22:15:33,082 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-28 22:15:33,087 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-28 22:15:33,102 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 22:15:33,110 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 22:15:33,116 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 22:15:33,123 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 22:15:33,129 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 22:15:33,138 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 22:15:33,146 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 22:15:33,156 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 22:15:33,158 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-28 22:15:33,164 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 22:15:33,691 INFO L134 CoverageAnalysis]: Checked inductivity of 3792 backedges. 2161 proven. 556 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2018-01-28 22:15:33,711 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 22:15:33,711 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 37] total 56 [2018-01-28 22:15:33,712 INFO L409 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-01-28 22:15:33,712 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-01-28 22:15:33,713 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=2790, Unknown=0, NotChecked=0, Total=3080 [2018-01-28 22:15:33,713 INFO L87 Difference]: Start difference. First operand 536 states and 550 transitions. Second operand 56 states. [2018-01-28 22:15:35,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:15:35,996 INFO L93 Difference]: Finished difference Result 746 states and 767 transitions. [2018-01-28 22:15:35,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-01-28 22:15:35,996 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 366 [2018-01-28 22:15:35,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:15:35,998 INFO L225 Difference]: With dead ends: 746 [2018-01-28 22:15:35,998 INFO L226 Difference]: Without dead ends: 644 [2018-01-28 22:15:35,999 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5512 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2065, Invalid=13435, Unknown=0, NotChecked=0, Total=15500 [2018-01-28 22:15:35,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2018-01-28 22:15:36,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 514. [2018-01-28 22:15:36,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 514 states. [2018-01-28 22:15:36,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 523 transitions. [2018-01-28 22:15:36,035 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 523 transitions. Word has length 366 [2018-01-28 22:15:36,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:15:36,036 INFO L432 AbstractCegarLoop]: Abstraction has 514 states and 523 transitions. [2018-01-28 22:15:36,036 INFO L433 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-01-28 22:15:36,036 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 523 transitions. [2018-01-28 22:15:36,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2018-01-28 22:15:36,039 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:15:36,039 INFO L330 BasicCegarLoop]: trace histogram [41, 35, 34, 34, 34, 34, 34, 34, 34, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 22:15:36,040 INFO L371 AbstractCegarLoop]: === Iteration 27 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-28 22:15:36,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1577774173, now seen corresponding path program 7 times [2018-01-28 22:15:36,040 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:15:36,040 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:15:36,041 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:36,041 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-28 22:15:36,041 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:36,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:15:36,081 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:15:36,838 INFO L134 CoverageAnalysis]: Checked inductivity of 5925 backedges. 1878 proven. 210 refuted. 0 times theorem prover too weak. 3837 trivial. 0 not checked. [2018-01-28 22:15:36,838 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 22:15:36,838 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-28 22:15:36,843 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:15:36,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:15:36,925 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 22:15:37,038 INFO L134 CoverageAnalysis]: Checked inductivity of 5925 backedges. 1878 proven. 210 refuted. 0 times theorem prover too weak. 3837 trivial. 0 not checked. [2018-01-28 22:15:37,060 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 22:15:37,060 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-01-28 22:15:37,060 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-28 22:15:37,061 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-28 22:15:37,061 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2018-01-28 22:15:37,061 INFO L87 Difference]: Start difference. First operand 514 states and 523 transitions. Second operand 17 states. [2018-01-28 22:15:37,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:15:37,482 INFO L93 Difference]: Finished difference Result 550 states and 560 transitions. [2018-01-28 22:15:37,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-01-28 22:15:37,482 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 448 [2018-01-28 22:15:37,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:15:37,485 INFO L225 Difference]: With dead ends: 550 [2018-01-28 22:15:37,485 INFO L226 Difference]: Without dead ends: 549 [2018-01-28 22:15:37,486 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 447 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=843, Unknown=0, NotChecked=0, Total=930 [2018-01-28 22:15:37,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2018-01-28 22:15:37,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 522. [2018-01-28 22:15:37,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 522 states. [2018-01-28 22:15:37,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 532 transitions. [2018-01-28 22:15:37,521 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 532 transitions. Word has length 448 [2018-01-28 22:15:37,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:15:37,522 INFO L432 AbstractCegarLoop]: Abstraction has 522 states and 532 transitions. [2018-01-28 22:15:37,522 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-28 22:15:37,522 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 532 transitions. [2018-01-28 22:15:37,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2018-01-28 22:15:37,525 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:15:37,526 INFO L330 BasicCegarLoop]: trace histogram [41, 35, 35, 34, 34, 34, 34, 34, 34, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 22:15:37,526 INFO L371 AbstractCegarLoop]: === Iteration 28 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-28 22:15:37,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1666359055, now seen corresponding path program 7 times [2018-01-28 22:15:37,526 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:15:37,526 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:15:37,527 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:37,527 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:15:37,528 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:37,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:15:37,570 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:15:38,884 INFO L134 CoverageAnalysis]: Checked inductivity of 5959 backedges. 2510 proven. 1004 refuted. 0 times theorem prover too weak. 2445 trivial. 0 not checked. [2018-01-28 22:15:38,885 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 22:15:38,885 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-28 22:15:38,890 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:15:39,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:15:39,011 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 22:15:39,015 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-01-28 22:15:39,016 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-28 22:15:39,020 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:15:39,021 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-01-28 22:15:40,023 INFO L134 CoverageAnalysis]: Checked inductivity of 5959 backedges. 1935 proven. 217 refuted. 0 times theorem prover too weak. 3807 trivial. 0 not checked. [2018-01-28 22:15:40,043 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 22:15:40,043 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 20] total 47 [2018-01-28 22:15:40,044 INFO L409 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-01-28 22:15:40,044 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-01-28 22:15:40,044 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=2053, Unknown=0, NotChecked=0, Total=2256 [2018-01-28 22:15:40,044 INFO L87 Difference]: Start difference. First operand 522 states and 532 transitions. Second operand 48 states. [2018-01-28 22:15:42,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:15:42,956 INFO L93 Difference]: Finished difference Result 653 states and 670 transitions. [2018-01-28 22:15:42,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-01-28 22:15:42,956 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 449 [2018-01-28 22:15:42,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:15:42,958 INFO L225 Difference]: With dead ends: 653 [2018-01-28 22:15:42,958 INFO L226 Difference]: Without dead ends: 651 [2018-01-28 22:15:42,959 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 421 SyntacticMatches, 11 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4063 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1763, Invalid=12279, Unknown=0, NotChecked=0, Total=14042 [2018-01-28 22:15:42,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2018-01-28 22:15:42,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 618. [2018-01-28 22:15:42,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 618 states. [2018-01-28 22:15:42,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 633 transitions. [2018-01-28 22:15:42,999 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 633 transitions. Word has length 449 [2018-01-28 22:15:43,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:15:43,000 INFO L432 AbstractCegarLoop]: Abstraction has 618 states and 633 transitions. [2018-01-28 22:15:43,000 INFO L433 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-01-28 22:15:43,000 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 633 transitions. [2018-01-28 22:15:43,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2018-01-28 22:15:43,004 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:15:43,004 INFO L330 BasicCegarLoop]: trace histogram [50, 43, 42, 42, 42, 42, 42, 42, 42, 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] [2018-01-28 22:15:43,004 INFO L371 AbstractCegarLoop]: === Iteration 29 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-28 22:15:43,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1314818710, now seen corresponding path program 8 times [2018-01-28 22:15:43,005 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:15:43,005 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:15:43,005 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:43,006 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:15:43,006 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:43,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:15:43,049 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:15:44,089 INFO L134 CoverageAnalysis]: Checked inductivity of 8960 backedges. 2818 proven. 297 refuted. 0 times theorem prover too weak. 5845 trivial. 0 not checked. [2018-01-28 22:15:44,090 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 22:15:44,090 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-28 22:15:44,095 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-28 22:15:44,114 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 22:15:44,162 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 22:15:44,170 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-28 22:15:44,176 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 22:15:45,443 INFO L134 CoverageAnalysis]: Checked inductivity of 8960 backedges. 4836 proven. 203 refuted. 0 times theorem prover too weak. 3921 trivial. 0 not checked. [2018-01-28 22:15:45,463 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 22:15:45,463 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 32] total 60 [2018-01-28 22:15:45,464 INFO L409 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-01-28 22:15:45,464 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-01-28 22:15:45,464 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=294, Invalid=3246, Unknown=0, NotChecked=0, Total=3540 [2018-01-28 22:15:45,464 INFO L87 Difference]: Start difference. First operand 618 states and 633 transitions. Second operand 60 states. [2018-01-28 22:15:47,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:15:47,987 INFO L93 Difference]: Finished difference Result 1116 states and 1147 transitions. [2018-01-28 22:15:47,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-01-28 22:15:47,987 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 540 [2018-01-28 22:15:47,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:15:47,990 INFO L225 Difference]: With dead ends: 1116 [2018-01-28 22:15:47,990 INFO L226 Difference]: Without dead ends: 741 [2018-01-28 22:15:47,993 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 663 GetRequests, 511 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8753 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2770, Invalid=20792, Unknown=0, NotChecked=0, Total=23562 [2018-01-28 22:15:47,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2018-01-28 22:15:48,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 703. [2018-01-28 22:15:48,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 703 states. [2018-01-28 22:15:48,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 713 transitions. [2018-01-28 22:15:48,035 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 713 transitions. Word has length 540 [2018-01-28 22:15:48,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:15:48,036 INFO L432 AbstractCegarLoop]: Abstraction has 703 states and 713 transitions. [2018-01-28 22:15:48,036 INFO L433 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-01-28 22:15:48,036 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 713 transitions. [2018-01-28 22:15:48,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 551 [2018-01-28 22:15:48,040 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:15:48,040 INFO L330 BasicCegarLoop]: trace histogram [51, 44, 44, 43, 43, 43, 43, 43, 43, 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] [2018-01-28 22:15:48,040 INFO L371 AbstractCegarLoop]: === Iteration 30 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-28 22:15:48,041 INFO L82 PathProgramCache]: Analyzing trace with hash 30237823, now seen corresponding path program 8 times [2018-01-28 22:15:48,041 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:15:48,041 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:15:48,042 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:48,042 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-28 22:15:48,042 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:48,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:15:48,081 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:15:49,363 INFO L134 CoverageAnalysis]: Checked inductivity of 9398 backedges. 2821 proven. 284 refuted. 0 times theorem prover too weak. 6293 trivial. 0 not checked. [2018-01-28 22:15:49,364 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 22:15:49,364 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-28 22:15:49,369 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-28 22:15:49,389 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 22:15:49,441 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 22:15:49,451 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-28 22:15:49,461 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 22:15:49,465 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-01-28 22:15:49,465 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-28 22:15:49,469 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:15:49,469 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-01-28 22:15:50,367 INFO L134 CoverageAnalysis]: Checked inductivity of 9398 backedges. 2821 proven. 284 refuted. 0 times theorem prover too weak. 6293 trivial. 0 not checked. [2018-01-28 22:15:50,388 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 22:15:50,388 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 38 [2018-01-28 22:15:50,389 INFO L409 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-01-28 22:15:50,389 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-01-28 22:15:50,390 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=1230, Unknown=0, NotChecked=0, Total=1482 [2018-01-28 22:15:50,390 INFO L87 Difference]: Start difference. First operand 703 states and 713 transitions. Second operand 39 states. [2018-01-28 22:15:51,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:15:51,267 INFO L93 Difference]: Finished difference Result 773 states and 787 transitions. [2018-01-28 22:15:51,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-01-28 22:15:51,267 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 550 [2018-01-28 22:15:51,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:15:51,269 INFO L225 Difference]: With dead ends: 773 [2018-01-28 22:15:51,269 INFO L226 Difference]: Without dead ends: 771 [2018-01-28 22:15:51,270 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 520 SyntacticMatches, 15 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1285 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=668, Invalid=3492, Unknown=0, NotChecked=0, Total=4160 [2018-01-28 22:15:51,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2018-01-28 22:15:51,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 721. [2018-01-28 22:15:51,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 721 states. [2018-01-28 22:15:51,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 733 transitions. [2018-01-28 22:15:51,296 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 733 transitions. Word has length 550 [2018-01-28 22:15:51,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:15:51,296 INFO L432 AbstractCegarLoop]: Abstraction has 721 states and 733 transitions. [2018-01-28 22:15:51,296 INFO L433 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-01-28 22:15:51,296 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 733 transitions. [2018-01-28 22:15:51,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 560 [2018-01-28 22:15:51,298 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:15:51,299 INFO L330 BasicCegarLoop]: trace histogram [52, 45, 45, 44, 44, 44, 44, 44, 44, 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] [2018-01-28 22:15:51,299 INFO L371 AbstractCegarLoop]: === Iteration 31 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-28 22:15:51,299 INFO L82 PathProgramCache]: Analyzing trace with hash 408382660, now seen corresponding path program 9 times [2018-01-28 22:15:51,299 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:15:51,299 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:15:51,300 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:51,300 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-28 22:15:51,300 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:51,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:15:51,325 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:15:52,730 INFO L134 CoverageAnalysis]: Checked inductivity of 9803 backedges. 3150 proven. 360 refuted. 0 times theorem prover too weak. 6293 trivial. 0 not checked. [2018-01-28 22:15:52,730 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 22:15:52,730 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-28 22:15:52,737 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-28 22:15:52,764 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 22:15:52,770 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 22:15:52,776 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 22:15:52,784 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 22:15:52,795 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 22:15:52,807 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 22:15:52,821 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 22:15:52,838 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 22:15:52,842 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-28 22:15:52,849 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 22:15:52,854 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-01-28 22:15:52,855 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-28 22:15:52,864 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:15:52,864 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-01-28 22:15:53,929 INFO L134 CoverageAnalysis]: Checked inductivity of 9803 backedges. 4694 proven. 959 refuted. 0 times theorem prover too weak. 4150 trivial. 0 not checked. [2018-01-28 22:15:53,949 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 22:15:53,950 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 29] total 52 [2018-01-28 22:15:53,950 INFO L409 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-01-28 22:15:53,950 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-01-28 22:15:53,951 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=2469, Unknown=0, NotChecked=0, Total=2756 [2018-01-28 22:15:53,951 INFO L87 Difference]: Start difference. First operand 721 states and 733 transitions. Second operand 53 states. [2018-01-28 22:15:58,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:15:58,779 INFO L93 Difference]: Finished difference Result 780 states and 794 transitions. [2018-01-28 22:15:58,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-01-28 22:15:58,779 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 559 [2018-01-28 22:15:58,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:15:58,781 INFO L225 Difference]: With dead ends: 780 [2018-01-28 22:15:58,781 INFO L226 Difference]: Without dead ends: 778 [2018-01-28 22:15:58,783 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 690 GetRequests, 519 SyntacticMatches, 13 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9915 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=3413, Invalid=22027, Unknown=0, NotChecked=0, Total=25440 [2018-01-28 22:15:58,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2018-01-28 22:15:58,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 719. [2018-01-28 22:15:58,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 719 states. [2018-01-28 22:15:58,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 730 transitions. [2018-01-28 22:15:58,812 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 730 transitions. Word has length 559 [2018-01-28 22:15:58,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:15:58,812 INFO L432 AbstractCegarLoop]: Abstraction has 719 states and 730 transitions. [2018-01-28 22:15:58,812 INFO L433 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-01-28 22:15:58,813 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 730 transitions. [2018-01-28 22:15:58,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 660 [2018-01-28 22:15:58,816 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:15:58,816 INFO L330 BasicCegarLoop]: trace histogram [62, 54, 53, 53, 53, 53, 53, 53, 53, 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] [2018-01-28 22:15:58,816 INFO L371 AbstractCegarLoop]: === Iteration 32 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-28 22:15:58,816 INFO L82 PathProgramCache]: Analyzing trace with hash -753105432, now seen corresponding path program 9 times [2018-01-28 22:15:58,816 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:15:58,816 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:15:58,817 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:58,817 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-28 22:15:58,817 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:15:58,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:15:58,852 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:16:00,192 INFO L134 CoverageAnalysis]: Checked inductivity of 14057 backedges. 4215 proven. 435 refuted. 0 times theorem prover too weak. 9407 trivial. 0 not checked. [2018-01-28 22:16:00,192 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 22:16:00,193 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-28 22:16:00,198 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-28 22:16:00,219 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 22:16:00,223 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 22:16:00,228 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 22:16:00,234 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 22:16:00,242 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 22:16:00,252 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 22:16:00,265 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 22:16:00,279 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 22:16:00,296 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-28 22:16:00,300 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-28 22:16:00,306 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 22:16:01,040 INFO L134 CoverageAnalysis]: Checked inductivity of 14057 backedges. 4215 proven. 387 refuted. 0 times theorem prover too weak. 9455 trivial. 0 not checked. [2018-01-28 22:16:01,061 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 22:16:01,061 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26] total 52 [2018-01-28 22:16:01,062 INFO L409 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-01-28 22:16:01,062 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-01-28 22:16:01,062 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=2534, Unknown=0, NotChecked=0, Total=2756 [2018-01-28 22:16:01,062 INFO L87 Difference]: Start difference. First operand 719 states and 730 transitions. Second operand 53 states. [2018-01-28 22:16:04,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:16:04,296 INFO L93 Difference]: Finished difference Result 933 states and 953 transitions. [2018-01-28 22:16:04,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-01-28 22:16:04,296 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 659 [2018-01-28 22:16:04,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:16:04,299 INFO L225 Difference]: With dead ends: 933 [2018-01-28 22:16:04,299 INFO L226 Difference]: Without dead ends: 932 [2018-01-28 22:16:04,302 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 782 GetRequests, 637 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7227 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1933, Invalid=19529, Unknown=0, NotChecked=0, Total=21462 [2018-01-28 22:16:04,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2018-01-28 22:16:04,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 839. [2018-01-28 22:16:04,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 839 states. [2018-01-28 22:16:04,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 855 transitions. [2018-01-28 22:16:04,335 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 855 transitions. Word has length 659 [2018-01-28 22:16:04,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:16:04,336 INFO L432 AbstractCegarLoop]: Abstraction has 839 states and 855 transitions. [2018-01-28 22:16:04,336 INFO L433 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-01-28 22:16:04,336 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 855 transitions. [2018-01-28 22:16:04,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 661 [2018-01-28 22:16:04,339 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:16:04,339 INFO L330 BasicCegarLoop]: trace histogram [62, 54, 54, 53, 53, 53, 53, 53, 53, 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] [2018-01-28 22:16:04,339 INFO L371 AbstractCegarLoop]: === Iteration 33 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-28 22:16:04,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1871431860, now seen corresponding path program 10 times [2018-01-28 22:16:04,340 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:16:04,340 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:16:04,340 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:16:04,341 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-28 22:16:04,341 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:16:04,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:16:04,373 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:16:06,103 INFO L134 CoverageAnalysis]: Checked inductivity of 14110 backedges. 4258 proven. 445 refuted. 0 times theorem prover too weak. 9407 trivial. 0 not checked. [2018-01-28 22:16:06,103 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 22:16:06,103 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-28 22:16:06,108 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-28 22:16:06,202 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-28 22:16:06,209 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 22:16:06,986 INFO L134 CoverageAnalysis]: Checked inductivity of 14110 backedges. 7328 proven. 268 refuted. 0 times theorem prover too weak. 6514 trivial. 0 not checked. [2018-01-28 22:16:07,007 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 22:16:07,007 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 36] total 61 [2018-01-28 22:16:07,008 INFO L409 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-01-28 22:16:07,008 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-01-28 22:16:07,008 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=3382, Unknown=0, NotChecked=0, Total=3660 [2018-01-28 22:16:07,008 INFO L87 Difference]: Start difference. First operand 839 states and 855 transitions. Second operand 61 states. [2018-01-28 22:16:09,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:16:09,920 INFO L93 Difference]: Finished difference Result 1211 states and 1244 transitions. [2018-01-28 22:16:09,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-01-28 22:16:09,921 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 660 [2018-01-28 22:16:09,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:16:09,923 INFO L225 Difference]: With dead ends: 1211 [2018-01-28 22:16:09,924 INFO L226 Difference]: Without dead ends: 968 [2018-01-28 22:16:09,925 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 748 GetRequests, 627 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4623 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1408, Invalid=13598, Unknown=0, NotChecked=0, Total=15006 [2018-01-28 22:16:09,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2018-01-28 22:16:09,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 858. [2018-01-28 22:16:09,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 858 states. [2018-01-28 22:16:09,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 873 transitions. [2018-01-28 22:16:09,958 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 873 transitions. Word has length 660 [2018-01-28 22:16:09,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:16:09,958 INFO L432 AbstractCegarLoop]: Abstraction has 858 states and 873 transitions. [2018-01-28 22:16:09,958 INFO L433 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-01-28 22:16:09,958 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 873 transitions. [2018-01-28 22:16:09,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 679 [2018-01-28 22:16:09,962 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:16:09,962 INFO L330 BasicCegarLoop]: trace histogram [64, 56, 56, 55, 55, 55, 55, 55, 55, 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] [2018-01-28 22:16:09,962 INFO L371 AbstractCegarLoop]: === Iteration 34 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-28 22:16:09,962 INFO L82 PathProgramCache]: Analyzing trace with hash -532715854, now seen corresponding path program 11 times [2018-01-28 22:16:09,962 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:16:09,962 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:16:09,963 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:16:09,963 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-28 22:16:09,963 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:16:09,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:16:09,994 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:16:11,547 INFO L134 CoverageAnalysis]: Checked inductivity of 15113 backedges. 4836 proven. 334 refuted. 0 times theorem prover too weak. 9943 trivial. 0 not checked. [2018-01-28 22:16:11,547 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 22:16:11,547 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-28 22:16:11,552 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-28 22:16:11,574 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 22:16:11,581 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 22:16:11,591 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 22:16:11,602 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 22:16:11,614 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 22:16:11,626 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 22:16:11,638 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 22:16:11,651 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 22:16:11,665 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 22:16:11,678 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 22:16:11,693 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 22:16:11,709 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 22:16:11,711 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-28 22:16:11,718 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 22:16:12,728 INFO L134 CoverageAnalysis]: Checked inductivity of 15113 backedges. 5106 proven. 1446 refuted. 0 times theorem prover too weak. 8561 trivial. 0 not checked. [2018-01-28 22:16:12,749 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 22:16:12,750 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 51] total 76 [2018-01-28 22:16:12,751 INFO L409 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-01-28 22:16:12,751 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-01-28 22:16:12,751 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=543, Invalid=5157, Unknown=0, NotChecked=0, Total=5700 [2018-01-28 22:16:12,751 INFO L87 Difference]: Start difference. First operand 858 states and 873 transitions. Second operand 76 states. [2018-01-28 22:16:15,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:16:15,504 INFO L93 Difference]: Finished difference Result 1266 states and 1293 transitions. [2018-01-28 22:16:15,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-01-28 22:16:15,505 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 678 [2018-01-28 22:16:15,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:16:15,507 INFO L225 Difference]: With dead ends: 1266 [2018-01-28 22:16:15,507 INFO L226 Difference]: Without dead ends: 909 [2018-01-28 22:16:15,509 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 773 GetRequests, 629 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7365 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2392, Invalid=18778, Unknown=0, NotChecked=0, Total=21170 [2018-01-28 22:16:15,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2018-01-28 22:16:15,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 874. [2018-01-28 22:16:15,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 874 states. [2018-01-28 22:16:15,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 887 transitions. [2018-01-28 22:16:15,553 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 887 transitions. Word has length 678 [2018-01-28 22:16:15,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:16:15,554 INFO L432 AbstractCegarLoop]: Abstraction has 874 states and 887 transitions. [2018-01-28 22:16:15,554 INFO L433 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-01-28 22:16:15,554 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 887 transitions. [2018-01-28 22:16:15,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 779 [2018-01-28 22:16:15,558 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:16:15,558 INFO L330 BasicCegarLoop]: trace histogram [74, 65, 64, 64, 64, 64, 64, 64, 64, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 22:16:15,558 INFO L371 AbstractCegarLoop]: === Iteration 35 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-28 22:16:15,559 INFO L82 PathProgramCache]: Analyzing trace with hash -401975728, now seen corresponding path program 10 times [2018-01-28 22:16:15,559 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:16:15,559 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:16:15,559 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:16:15,559 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-28 22:16:15,559 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:16:15,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:16:15,592 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:16:17,569 INFO L134 CoverageAnalysis]: Checked inductivity of 20307 backedges. 8827 proven. 1370 refuted. 0 times theorem prover too weak. 10110 trivial. 0 not checked. [2018-01-28 22:16:17,569 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 22:16:17,569 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-28 22:16:17,574 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-28 22:16:17,677 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-28 22:16:17,685 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 22:16:18,732 INFO L134 CoverageAnalysis]: Checked inductivity of 20307 backedges. 9923 proven. 342 refuted. 0 times theorem prover too weak. 10042 trivial. 0 not checked. [2018-01-28 22:16:18,753 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 22:16:18,753 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 40] total 75 [2018-01-28 22:16:18,754 INFO L409 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-01-28 22:16:18,754 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-01-28 22:16:18,754 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=526, Invalid=5024, Unknown=0, NotChecked=0, Total=5550 [2018-01-28 22:16:18,754 INFO L87 Difference]: Start difference. First operand 874 states and 887 transitions. Second operand 75 states. [2018-01-28 22:16:22,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:16:22,190 INFO L93 Difference]: Finished difference Result 1266 states and 1284 transitions. [2018-01-28 22:16:22,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-01-28 22:16:22,190 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 778 [2018-01-28 22:16:22,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:16:22,193 INFO L225 Difference]: With dead ends: 1266 [2018-01-28 22:16:22,193 INFO L226 Difference]: Without dead ends: 1134 [2018-01-28 22:16:22,195 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 924 GetRequests, 742 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11293 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=3971, Invalid=29701, Unknown=0, NotChecked=0, Total=33672 [2018-01-28 22:16:22,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2018-01-28 22:16:22,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 874. [2018-01-28 22:16:22,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 874 states. [2018-01-28 22:16:22,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 885 transitions. [2018-01-28 22:16:22,228 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 885 transitions. Word has length 778 [2018-01-28 22:16:22,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:16:22,229 INFO L432 AbstractCegarLoop]: Abstraction has 874 states and 885 transitions. [2018-01-28 22:16:22,229 INFO L433 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-01-28 22:16:22,229 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 885 transitions. [2018-01-28 22:16:22,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 788 [2018-01-28 22:16:22,233 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:16:22,233 INFO L330 BasicCegarLoop]: trace histogram [75, 66, 65, 65, 65, 65, 65, 65, 65, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 22:16:22,233 INFO L371 AbstractCegarLoop]: === Iteration 36 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-28 22:16:22,233 INFO L82 PathProgramCache]: Analyzing trace with hash 204552207, now seen corresponding path program 11 times [2018-01-28 22:16:22,233 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:16:22,233 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:16:22,234 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:16:22,234 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-28 22:16:22,234 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:16:22,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:16:22,279 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:16:24,438 INFO L134 CoverageAnalysis]: Checked inductivity of 20904 backedges. 9239 proven. 1555 refuted. 0 times theorem prover too weak. 10110 trivial. 0 not checked. [2018-01-28 22:16:24,438 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 22:16:24,438 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-28 22:16:24,448 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-28 22:16:24,481 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 22:16:24,493 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 22:16:24,506 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 22:16:24,521 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 22:16:24,536 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 22:16:24,552 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 22:16:24,568 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 22:16:24,585 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 22:16:24,601 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 22:16:24,618 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 22:16:24,635 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 22:16:24,653 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-28 22:16:24,656 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-28 22:16:24,665 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 22:16:25,982 INFO L134 CoverageAnalysis]: Checked inductivity of 20904 backedges. 6104 proven. 1738 refuted. 0 times theorem prover too weak. 13062 trivial. 0 not checked. [2018-01-28 22:16:26,004 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 22:16:26,009 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 53] total 88 [2018-01-28 22:16:26,010 INFO L409 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-01-28 22:16:26,010 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-01-28 22:16:26,011 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=598, Invalid=7058, Unknown=0, NotChecked=0, Total=7656 [2018-01-28 22:16:26,011 INFO L87 Difference]: Start difference. First operand 874 states and 885 transitions. Second operand 88 states. [2018-01-28 22:16:32,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:16:32,207 INFO L93 Difference]: Finished difference Result 1158 states and 1174 transitions. [2018-01-28 22:16:32,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2018-01-28 22:16:32,207 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 787 [2018-01-28 22:16:32,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:16:32,210 INFO L225 Difference]: With dead ends: 1158 [2018-01-28 22:16:32,210 INFO L226 Difference]: Without dead ends: 1035 [2018-01-28 22:16:32,214 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 984 GetRequests, 748 SyntacticMatches, 0 SemanticMatches, 236 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18554 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=6264, Invalid=50142, Unknown=0, NotChecked=0, Total=56406 [2018-01-28 22:16:32,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2018-01-28 22:16:32,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 999. [2018-01-28 22:16:32,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 999 states. [2018-01-28 22:16:32,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1011 transitions. [2018-01-28 22:16:32,252 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1011 transitions. Word has length 787 [2018-01-28 22:16:32,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:16:32,253 INFO L432 AbstractCegarLoop]: Abstraction has 999 states and 1011 transitions. [2018-01-28 22:16:32,253 INFO L433 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-01-28 22:16:32,253 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1011 transitions. [2018-01-28 22:16:32,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 907 [2018-01-28 22:16:32,257 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:16:32,258 INFO L330 BasicCegarLoop]: trace histogram [87, 77, 76, 76, 76, 76, 76, 76, 76, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 22:16:32,258 INFO L371 AbstractCegarLoop]: === Iteration 37 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-28 22:16:32,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1845922883, now seen corresponding path program 12 times [2018-01-28 22:16:32,258 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:16:32,258 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:16:32,259 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:16:32,259 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-28 22:16:32,259 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:16:32,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:16:32,299 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:16:34,826 INFO L134 CoverageAnalysis]: Checked inductivity of 28408 backedges. 11589 proven. 1749 refuted. 0 times theorem prover too weak. 15070 trivial. 0 not checked. [2018-01-28 22:16:34,826 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 22:16:34,827 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-28 22:16:34,832 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-28 22:16:34,860 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 22:16:34,864 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 22:16:34,868 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 22:16:34,871 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 22:16:34,875 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 22:16:34,885 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 22:16:34,893 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 22:16:34,906 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 22:16:34,918 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 22:16:34,932 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 22:16:34,948 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 22:16:34,972 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 22:16:34,993 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 22:16:35,024 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 22:16:35,116 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 22:16:35,121 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-28 22:16:35,130 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 22:16:36,090 INFO L134 CoverageAnalysis]: Checked inductivity of 28408 backedges. 9284 proven. 3195 refuted. 0 times theorem prover too weak. 15929 trivial. 0 not checked. [2018-01-28 22:16:36,112 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 22:16:36,113 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 68 [2018-01-28 22:16:36,113 INFO L409 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-01-28 22:16:36,113 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-01-28 22:16:36,114 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=546, Invalid=4146, Unknown=0, NotChecked=0, Total=4692 [2018-01-28 22:16:36,114 INFO L87 Difference]: Start difference. First operand 999 states and 1011 transitions. Second operand 69 states. [2018-01-28 22:16:40,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:16:40,387 INFO L93 Difference]: Finished difference Result 1428 states and 1451 transitions. [2018-01-28 22:16:40,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2018-01-28 22:16:40,387 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 906 [2018-01-28 22:16:40,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:16:40,391 INFO L225 Difference]: With dead ends: 1428 [2018-01-28 22:16:40,391 INFO L226 Difference]: Without dead ends: 1427 [2018-01-28 22:16:40,394 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 1075 GetRequests, 877 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14150 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=7427, Invalid=32373, Unknown=0, NotChecked=0, Total=39800 [2018-01-28 22:16:40,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1427 states. [2018-01-28 22:16:40,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1427 to 1143. [2018-01-28 22:16:40,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1143 states. [2018-01-28 22:16:40,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 1160 transitions. [2018-01-28 22:16:40,438 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 1160 transitions. Word has length 906 [2018-01-28 22:16:40,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:16:40,439 INFO L432 AbstractCegarLoop]: Abstraction has 1143 states and 1160 transitions. [2018-01-28 22:16:40,439 INFO L433 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-01-28 22:16:40,439 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 1160 transitions. [2018-01-28 22:16:40,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 908 [2018-01-28 22:16:40,443 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:16:40,444 INFO L330 BasicCegarLoop]: trace histogram [87, 77, 77, 76, 76, 76, 76, 76, 76, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 22:16:40,444 INFO L371 AbstractCegarLoop]: === Iteration 38 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-28 22:16:40,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1389034577, now seen corresponding path program 12 times [2018-01-28 22:16:40,444 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:16:40,444 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:16:40,445 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:16:40,445 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-28 22:16:40,445 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:16:40,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:16:40,484 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:16:43,478 INFO L134 CoverageAnalysis]: Checked inductivity of 28484 backedges. 11715 proven. 1699 refuted. 0 times theorem prover too weak. 15070 trivial. 0 not checked. [2018-01-28 22:16:43,478 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 22:16:43,478 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-28 22:16:43,483 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-28 22:16:43,513 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 22:16:43,517 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 22:16:43,521 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 22:16:43,523 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 22:16:43,528 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 22:16:43,537 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 22:16:43,545 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 22:16:43,557 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 22:16:43,568 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 22:16:43,583 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 22:16:43,598 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 22:16:43,617 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 22:16:43,642 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 22:16:43,672 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 22:16:43,730 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-28 22:16:43,737 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-28 22:16:43,748 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 22:16:43,750 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-01-28 22:16:43,751 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-28 22:16:43,756 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-28 22:16:43,756 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-01-28 22:16:46,432 INFO L134 CoverageAnalysis]: Checked inductivity of 28484 backedges. 13108 proven. 4300 refuted. 0 times theorem prover too weak. 11076 trivial. 0 not checked. [2018-01-28 22:16:46,453 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 22:16:46,454 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 42] total 78 [2018-01-28 22:16:46,454 INFO L409 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-01-28 22:16:46,454 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-01-28 22:16:46,455 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=645, Invalid=5517, Unknown=0, NotChecked=0, Total=6162 [2018-01-28 22:16:46,455 INFO L87 Difference]: Start difference. First operand 1143 states and 1160 transitions. Second operand 79 states. [2018-01-28 22:16:54,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:16:54,769 INFO L93 Difference]: Finished difference Result 1427 states and 1450 transitions. [2018-01-28 22:16:54,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2018-01-28 22:16:54,769 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 907 [2018-01-28 22:16:54,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:16:54,775 INFO L225 Difference]: With dead ends: 1427 [2018-01-28 22:16:54,775 INFO L226 Difference]: Without dead ends: 1426 [2018-01-28 22:16:54,779 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 1122 GetRequests, 849 SyntacticMatches, 18 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25402 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=11215, Invalid=54577, Unknown=0, NotChecked=0, Total=65792 [2018-01-28 22:16:54,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1426 states. [2018-01-28 22:16:54,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1426 to 1143. [2018-01-28 22:16:54,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1143 states. [2018-01-28 22:16:54,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 1159 transitions. [2018-01-28 22:16:54,843 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 1159 transitions. Word has length 907 [2018-01-28 22:16:54,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:16:54,843 INFO L432 AbstractCegarLoop]: Abstraction has 1143 states and 1159 transitions. [2018-01-28 22:16:54,843 INFO L433 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-01-28 22:16:54,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 1159 transitions. [2018-01-28 22:16:54,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1035 [2018-01-28 22:16:54,849 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:16:54,850 INFO L330 BasicCegarLoop]: trace histogram [100, 89, 88, 88, 88, 88, 88, 88, 88, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 22:16:54,850 INFO L371 AbstractCegarLoop]: === Iteration 39 === [fooErr1RequiresViolation, fooErr0AssertViolation, fooErr2RequiresViolation, mainErr0AssertViolation, mainErr2EnsuresViolation, mainErr1AssertViolation]=== [2018-01-28 22:16:54,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1825237072, now seen corresponding path program 13 times [2018-01-28 22:16:54,850 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:16:54,850 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:16:54,851 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:16:54,851 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-28 22:16:54,851 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:16:54,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:16:54,899 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:16:57,646 INFO L134 CoverageAnalysis]: Checked inductivity of 37873 backedges. 8173 proven. 677 refuted. 0 times theorem prover too weak. 29023 trivial. 0 not checked. [2018-01-28 22:16:57,646 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 22:16:57,678 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-01-28 22:16:57,683 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:16:57,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:16:57,832 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 22:16:58,403 INFO L134 CoverageAnalysis]: Checked inductivity of 37873 backedges. 8118 proven. 528 refuted. 0 times theorem prover too weak. 29227 trivial. 0 not checked. [2018-01-28 22:16:58,424 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 22:16:58,425 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 24] total 55 [2018-01-28 22:16:58,426 INFO L409 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-01-28 22:16:58,426 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-01-28 22:16:58,426 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=2815, Unknown=0, NotChecked=0, Total=3080 [2018-01-28 22:16:58,426 INFO L87 Difference]: Start difference. First operand 1143 states and 1159 transitions. Second operand 56 states. [2018-01-28 22:17:01,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:17:01,202 INFO L93 Difference]: Finished difference Result 1633 states and 1665 transitions. [2018-01-28 22:17:01,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-01-28 22:17:01,203 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 1034 [2018-01-28 22:17:01,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:17:01,207 INFO L225 Difference]: With dead ends: 1633 [2018-01-28 22:17:01,207 INFO L226 Difference]: Without dead ends: 1632 [2018-01-28 22:17:01,208 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 1154 GetRequests, 1013 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7040 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1601, Invalid=18705, Unknown=0, NotChecked=0, Total=20306 [2018-01-28 22:17:01,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. Received shutdown request... [2018-01-28 22:17:01,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 1564. [2018-01-28 22:17:01,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1564 states. [2018-01-28 22:17:01,266 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-28 22:17:01,271 WARN L185 ceAbstractionStarter]: Timeout [2018-01-28 22:17:01,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 10:17:01 BoogieIcfgContainer [2018-01-28 22:17:01,272 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-28 22:17:01,273 INFO L168 Benchmark]: Toolchain (without parser) took 115877.60 ms. Allocated memory was 305.1 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 266.0 MB in the beginning and 1.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 930.0 MB. Max. memory is 5.3 GB. [2018-01-28 22:17:01,275 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 305.1 MB. Free memory is still 270.0 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-28 22:17:01,275 INFO L168 Benchmark]: CACSL2BoogieTranslator took 195.11 ms. Allocated memory is still 305.1 MB. Free memory was 264.0 MB in the beginning and 256.0 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 5.3 GB. [2018-01-28 22:17:01,275 INFO L168 Benchmark]: Boogie Preprocessor took 31.36 ms. Allocated memory is still 305.1 MB. Free memory was 256.0 MB in the beginning and 254.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-28 22:17:01,276 INFO L168 Benchmark]: RCFGBuilder took 265.12 ms. Allocated memory is still 305.1 MB. Free memory was 254.0 MB in the beginning and 237.1 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 5.3 GB. [2018-01-28 22:17:01,276 INFO L168 Benchmark]: TraceAbstraction took 115377.86 ms. Allocated memory was 305.1 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 237.1 MB in the beginning and 1.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 901.0 MB. Max. memory is 5.3 GB. [2018-01-28 22:17:01,278 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 305.1 MB. Free memory is still 270.0 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 195.11 ms. Allocated memory is still 305.1 MB. Free memory was 264.0 MB in the beginning and 256.0 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 31.36 ms. Allocated memory is still 305.1 MB. Free memory was 256.0 MB in the beginning and 254.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 265.12 ms. Allocated memory is still 305.1 MB. Free memory was 254.0 MB in the beginning and 237.1 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 115377.86 ms. Allocated memory was 305.1 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 237.1 MB in the beginning and 1.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 901.0 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 18). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructedinput type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 18]: Timeout (TraceAbstraction) Unable to prove that array index is always in bounds (line 18). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructedinput type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 18). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructedinput type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 27]: Timeout (TraceAbstraction) Unable to prove that array index is always in bounds (line 27). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructedinput type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 23]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed (line 23). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructedinput type DoubleDeckerAutomaton). - TimeoutResultAtElement [Line: 30]: Timeout (TraceAbstraction) Unable to prove that array index is always in bounds (line 30). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructedinput type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 61 locations, 6 error locations. TIMEOUT Result, 115.3s OverallTime, 39 OverallIterations, 100 TraceHistogramMax, 61.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2175 SDtfs, 21397 SDslu, 29867 SDs, 0 SdLazy, 36711 SolverSat, 3544 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14705 GetRequests, 11698 SyntacticMatches, 87 SemanticMatches, 2920 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 141153 ImplicationChecksByTransitivity, 64.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1143occurred in iteration=37, 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: 0.9s AutomataMinimizationTime, 39 MinimizatonAttempts, 2200 StatesRemovedByMinimization, 37 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 3.0s SatisfiabilityAnalysisTime, 43.9s InterpolantComputationTime, 24775 NumberOfCodeBlocks, 24176 NumberOfCodeBlocksAsserted, 177 NumberOfCheckSat, 24701 ConstructedInterpolants, 2131 QuantifiedInterpolants, 49284468 SizeOfPredicates, 614 NumberOfNonLiveVariables, 21758 ConjunctsInSsa, 902 ConjunctsInUnsatCore, 74 InterpolantComputations, 7 PerfectInterpolantSequences, 447075/475120 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysWithLenghtAtDeclaration_false-valid-deref-write.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-28_22-17-01-287.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysWithLenghtAtDeclaration_false-valid-deref-write.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-28_22-17-01-287.csv Completed graceful shutdown