java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/ex3_forlist.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:08:12,186 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:08:12,189 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:08:12,208 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:08:12,208 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:08:12,210 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:08:12,212 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:08:12,221 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:08:12,225 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:08:12,228 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:08:12,230 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:08:12,232 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:08:12,232 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:08:12,234 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:08:12,237 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:08:12,238 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:08:12,239 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:08:12,240 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:08:12,242 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:08:12,246 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:08:12,250 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:08:12,253 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:08:12,255 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:08:12,256 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:08:12,258 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 23:08:12,261 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:08:12,262 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:08:12,263 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:08:12,263 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:08:12,264 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:08:12,264 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:08:12,265 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:08:12,265 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:08:12,266 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:08:12,266 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:08:12,267 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:08:12,268 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-14 23:08:12,281 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:08:12,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:08:12,283 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:08:12,283 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:08:12,283 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:08:12,284 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:08:12,284 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:08:12,284 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:08:12,284 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:08:12,284 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:08:12,285 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:08:12,285 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:08:12,287 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:08:12,287 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:08:12,288 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:08:12,288 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:08:12,288 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:08:12,288 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:08:12,288 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:08:12,289 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:08:12,289 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:08:12,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:08:12,289 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:08:12,290 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:08:12,290 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:08:12,290 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:08:12,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:08:12,290 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:08:12,291 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:08:12,576 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:08:12,588 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:08:12,592 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:08:12,593 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:08:12,594 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:08:12,595 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/ex3_forlist.i [2019-10-14 23:08:12,674 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a82f31b6/6e5e85d7187e44ffaf0e4719ee089fdb/FLAG5c27c3415 [2019-10-14 23:08:13,189 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:08:13,190 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/ex3_forlist.i [2019-10-14 23:08:13,196 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a82f31b6/6e5e85d7187e44ffaf0e4719ee089fdb/FLAG5c27c3415 [2019-10-14 23:08:13,581 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a82f31b6/6e5e85d7187e44ffaf0e4719ee089fdb [2019-10-14 23:08:13,591 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:08:13,593 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:08:13,594 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:08:13,594 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:08:13,600 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:08:13,601 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:08:13" (1/1) ... [2019-10-14 23:08:13,604 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4325f983 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:13, skipping insertion in model container [2019-10-14 23:08:13,604 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:08:13" (1/1) ... [2019-10-14 23:08:13,612 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:08:13,630 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:08:13,815 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:08:13,822 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:08:13,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:08:13,944 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:08:13,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:13 WrapperNode [2019-10-14 23:08:13,946 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:08:13,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:08:13,946 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:08:13,947 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:08:13,959 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:13" (1/1) ... [2019-10-14 23:08:13,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:13" (1/1) ... [2019-10-14 23:08:13,967 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:13" (1/1) ... [2019-10-14 23:08:13,968 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:13" (1/1) ... [2019-10-14 23:08:13,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:13" (1/1) ... [2019-10-14 23:08:13,983 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:13" (1/1) ... [2019-10-14 23:08:13,987 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:13" (1/1) ... [2019-10-14 23:08:13,992 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:08:13,993 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:08:13,993 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:08:13,993 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:08:13,994 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory: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 [2019-10-14 23:08:14,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:08:14,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:08:14,049 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2019-10-14 23:08:14,049 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2019-10-14 23:08:14,049 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2019-10-14 23:08:14,050 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2019-10-14 23:08:14,050 INFO L138 BoogieDeclarations]: Found implementation of procedure malloc [2019-10-14 23:08:14,051 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:08:14,051 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:08:14,051 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2019-10-14 23:08:14,051 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-10-14 23:08:14,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:08:14,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:08:14,052 INFO L130 BoogieDeclarations]: Found specification of procedure f [2019-10-14 23:08:14,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:08:14,052 INFO L130 BoogieDeclarations]: Found specification of procedure g [2019-10-14 23:08:14,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:08:14,053 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:08:14,053 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:08:14,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:08:14,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:08:14,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-14 23:08:14,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:08:14,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:08:14,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:08:14,425 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:08:14,425 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-14 23:08:14,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:08:14 BoogieIcfgContainer [2019-10-14 23:08:14,426 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:08:14,427 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:08:14,428 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:08:14,431 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:08:14,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:08:13" (1/3) ... [2019-10-14 23:08:14,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dbc28db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:08:14, skipping insertion in model container [2019-10-14 23:08:14,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:08:13" (2/3) ... [2019-10-14 23:08:14,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dbc28db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:08:14, skipping insertion in model container [2019-10-14 23:08:14,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:08:14" (3/3) ... [2019-10-14 23:08:14,434 INFO L109 eAbstractionObserver]: Analyzing ICFG ex3_forlist.i [2019-10-14 23:08:14,444 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:08:14,451 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:08:14,461 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:08:14,490 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:08:14,491 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:08:14,491 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:08:14,491 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:08:14,491 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:08:14,491 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:08:14,491 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:08:14,491 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:08:14,513 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2019-10-14 23:08:14,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-14 23:08:14,524 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:08:14,525 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:08:14,526 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:08:14,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:08:14,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1451885248, now seen corresponding path program 1 times [2019-10-14 23:08:14,537 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:08:14,538 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306782011] [2019-10-14 23:08:14,538 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:14,538 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:14,539 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:08:14,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:14,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:14,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:14,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:14,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:14,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:14,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:14,904 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-14 23:08:14,906 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306782011] [2019-10-14 23:08:14,907 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:08:14,908 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:08:14,908 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867306478] [2019-10-14 23:08:14,914 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:08:14,916 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:08:14,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:08:14,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:08:14,938 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 6 states. [2019-10-14 23:08:15,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:08:15,427 INFO L93 Difference]: Finished difference Result 96 states and 132 transitions. [2019-10-14 23:08:15,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:08:15,429 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2019-10-14 23:08:15,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:08:15,442 INFO L225 Difference]: With dead ends: 96 [2019-10-14 23:08:15,442 INFO L226 Difference]: Without dead ends: 53 [2019-10-14 23:08:15,446 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:08:15,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-10-14 23:08:15,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 42. [2019-10-14 23:08:15,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-10-14 23:08:15,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2019-10-14 23:08:15,506 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 39 [2019-10-14 23:08:15,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:08:15,506 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2019-10-14 23:08:15,507 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:08:15,507 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2019-10-14 23:08:15,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-10-14 23:08:15,509 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:08:15,510 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:08:15,510 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:08:15,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:08:15,511 INFO L82 PathProgramCache]: Analyzing trace with hash -507187170, now seen corresponding path program 1 times [2019-10-14 23:08:15,511 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:08:15,511 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910418075] [2019-10-14 23:08:15,512 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:15,512 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:15,512 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:08:15,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:15,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:15,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:15,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:15,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:15,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:15,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:15,699 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-14 23:08:15,700 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910418075] [2019-10-14 23:08:15,700 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139602245] [2019-10-14 23:08:15,700 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:08:15,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:15,804 INFO L256 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-14 23:08:15,814 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:08:15,848 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-14 23:08:15,848 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:08:15,849 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6 [2019-10-14 23:08:15,849 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635124672] [2019-10-14 23:08:15,855 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:08:15,855 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:08:15,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:08:15,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:08:15,856 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 3 states. [2019-10-14 23:08:15,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:08:15,896 INFO L93 Difference]: Finished difference Result 67 states and 83 transitions. [2019-10-14 23:08:15,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:08:15,897 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2019-10-14 23:08:15,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:08:15,899 INFO L225 Difference]: With dead ends: 67 [2019-10-14 23:08:15,899 INFO L226 Difference]: Without dead ends: 47 [2019-10-14 23:08:15,901 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:08:15,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-10-14 23:08:15,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2019-10-14 23:08:15,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-10-14 23:08:15,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2019-10-14 23:08:15,912 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 41 [2019-10-14 23:08:15,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:08:15,912 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2019-10-14 23:08:15,912 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:08:15,913 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2019-10-14 23:08:15,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-14 23:08:15,915 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:08:15,915 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:08:16,121 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:08:16,122 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:08:16,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:08:16,122 INFO L82 PathProgramCache]: Analyzing trace with hash -75669472, now seen corresponding path program 1 times [2019-10-14 23:08:16,123 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:08:16,124 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834785577] [2019-10-14 23:08:16,124 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:16,124 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:16,124 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:08:16,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:16,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:16,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:16,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:16,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:16,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:16,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:16,351 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-14 23:08:16,352 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834785577] [2019-10-14 23:08:16,352 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608184228] [2019-10-14 23:08:16,352 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:08:16,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:16,439 INFO L256 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:08:16,445 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:08:16,456 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-14 23:08:16,456 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:08:16,457 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 7 [2019-10-14 23:08:16,457 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181212096] [2019-10-14 23:08:16,458 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:08:16,459 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:08:16,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:08:16,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:08:16,459 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 7 states. [2019-10-14 23:08:16,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:08:16,886 INFO L93 Difference]: Finished difference Result 87 states and 105 transitions. [2019-10-14 23:08:16,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:08:16,887 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 43 [2019-10-14 23:08:16,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:08:16,889 INFO L225 Difference]: With dead ends: 87 [2019-10-14 23:08:16,890 INFO L226 Difference]: Without dead ends: 55 [2019-10-14 23:08:16,891 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:08:16,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-10-14 23:08:16,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 45. [2019-10-14 23:08:16,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-10-14 23:08:16,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2019-10-14 23:08:16,907 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 43 [2019-10-14 23:08:16,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:08:16,908 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2019-10-14 23:08:16,908 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:08:16,908 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2019-10-14 23:08:16,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-10-14 23:08:16,910 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:08:16,910 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:08:17,123 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:08:17,124 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:08:17,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:08:17,125 INFO L82 PathProgramCache]: Analyzing trace with hash -176141410, now seen corresponding path program 2 times [2019-10-14 23:08:17,125 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:08:17,125 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430416189] [2019-10-14 23:08:17,125 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:17,127 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:17,127 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:08:17,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:17,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:17,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:17,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:17,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:17,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:17,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:17,775 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-14 23:08:17,776 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430416189] [2019-10-14 23:08:17,776 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755775340] [2019-10-14 23:08:17,777 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:08:17,846 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-10-14 23:08:17,846 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-14 23:08:17,848 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-14 23:08:17,860 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:08:17,962 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2019-10-14 23:08:17,963 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:08:17,969 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:08:17,969 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:08:17,970 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2019-10-14 23:08:18,056 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-10-14 23:08:18,056 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:08:18,059 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:08:18,059 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:08:18,059 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-10-14 23:08:18,087 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-14 23:08:18,087 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:08:18,088 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [18] total 23 [2019-10-14 23:08:18,088 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290102689] [2019-10-14 23:08:18,088 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:08:18,089 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:08:18,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:08:18,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2019-10-14 23:08:18,091 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 7 states. [2019-10-14 23:08:18,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:08:18,396 INFO L93 Difference]: Finished difference Result 89 states and 111 transitions. [2019-10-14 23:08:18,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 23:08:18,396 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 45 [2019-10-14 23:08:18,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:08:18,400 INFO L225 Difference]: With dead ends: 89 [2019-10-14 23:08:18,400 INFO L226 Difference]: Without dead ends: 77 [2019-10-14 23:08:18,401 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=77, Invalid=625, Unknown=0, NotChecked=0, Total=702 [2019-10-14 23:08:18,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2019-10-14 23:08:18,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 68. [2019-10-14 23:08:18,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2019-10-14 23:08:18,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 86 transitions. [2019-10-14 23:08:18,421 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 86 transitions. Word has length 45 [2019-10-14 23:08:18,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:08:18,422 INFO L462 AbstractCegarLoop]: Abstraction has 68 states and 86 transitions. [2019-10-14 23:08:18,422 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:08:18,422 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 86 transitions. [2019-10-14 23:08:18,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-10-14 23:08:18,427 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:08:18,427 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:08:18,631 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:08:18,631 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:08:18,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:08:18,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1465709063, now seen corresponding path program 1 times [2019-10-14 23:08:18,632 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:08:18,633 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264701829] [2019-10-14 23:08:18,633 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:18,633 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:18,634 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:08:18,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:18,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:18,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:18,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:18,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:18,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:19,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:19,171 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-14 23:08:19,171 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264701829] [2019-10-14 23:08:19,172 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660230226] [2019-10-14 23:08:19,172 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:08:19,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:19,251 INFO L256 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 35 conjunts are in the unsatisfiable core [2019-10-14 23:08:19,258 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:08:19,267 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2019-10-14 23:08:19,268 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-10-14 23:08:19,283 INFO L567 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2019-10-14 23:08:19,284 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:08:19,284 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:11 [2019-10-14 23:08:19,482 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 31 treesize of output 7 [2019-10-14 23:08:19,482 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:08:19,488 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:08:19,488 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:08:19,488 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:39, output treesize:15 [2019-10-14 23:08:19,563 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2019-10-14 23:08:19,563 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:08:19,567 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:08:19,568 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:08:19,568 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:14, output treesize:7 [2019-10-14 23:08:19,716 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-14 23:08:19,716 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:08:19,716 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15] total 30 [2019-10-14 23:08:19,717 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581775554] [2019-10-14 23:08:19,717 INFO L442 AbstractCegarLoop]: Interpolant automaton has 30 states [2019-10-14 23:08:19,717 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:08:19,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2019-10-14 23:08:19,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2019-10-14 23:08:19,719 INFO L87 Difference]: Start difference. First operand 68 states and 86 transitions. Second operand 30 states. [2019-10-14 23:08:21,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:08:21,917 INFO L93 Difference]: Finished difference Result 137 states and 170 transitions. [2019-10-14 23:08:21,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-10-14 23:08:21,917 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 48 [2019-10-14 23:08:21,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:08:21,919 INFO L225 Difference]: With dead ends: 137 [2019-10-14 23:08:21,919 INFO L226 Difference]: Without dead ends: 110 [2019-10-14 23:08:21,920 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=297, Invalid=1865, Unknown=0, NotChecked=0, Total=2162 [2019-10-14 23:08:21,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2019-10-14 23:08:21,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 98. [2019-10-14 23:08:21,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2019-10-14 23:08:21,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 124 transitions. [2019-10-14 23:08:21,941 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 124 transitions. Word has length 48 [2019-10-14 23:08:21,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:08:21,941 INFO L462 AbstractCegarLoop]: Abstraction has 98 states and 124 transitions. [2019-10-14 23:08:21,941 INFO L463 AbstractCegarLoop]: Interpolant automaton has 30 states. [2019-10-14 23:08:21,942 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 124 transitions. [2019-10-14 23:08:21,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-10-14 23:08:21,943 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:08:21,943 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:08:22,147 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:08:22,148 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:08:22,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:08:22,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1177779125, now seen corresponding path program 1 times [2019-10-14 23:08:22,149 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:08:22,150 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437121000] [2019-10-14 23:08:22,150 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:22,150 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:08:22,150 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:08:22,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:22,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:22,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:22,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:22,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:22,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:22,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:22,697 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-14 23:08:22,698 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437121000] [2019-10-14 23:08:22,698 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357495723] [2019-10-14 23:08:22,698 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:08:22,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:08:22,780 INFO L256 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 36 conjunts are in the unsatisfiable core [2019-10-14 23:08:22,797 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:08:22,808 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2019-10-14 23:08:22,809 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:08:22,820 INFO L567 ElimStorePlain]: treesize reduction 12, result has 47.8 percent of original size [2019-10-14 23:08:22,821 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:08:22,821 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:11 [2019-10-14 23:08:23,031 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 11 treesize of output 7 [2019-10-14 23:08:23,031 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:08:23,037 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:08:23,038 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:08:23,038 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2019-10-14 23:08:23,083 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2019-10-14 23:08:23,083 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:08:23,089 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:08:23,090 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:08:23,090 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:11 [2019-10-14 23:08:23,199 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-14 23:08:23,211 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:08:23,212 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-10-14 23:08:23,212 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:49, output treesize:50 [2019-10-14 23:08:40,494 WARN L191 SmtUtils]: Spent 1.51 s on a formula simplification that was a NOOP. DAG size: 28 [2019-10-14 23:08:40,517 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:08:40,518 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 33 [2019-10-14 23:08:40,519 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:08:40,540 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:08:40,541 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-14 23:08:40,541 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:57, output treesize:25 [2019-10-14 23:08:40,653 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:08:40,667 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:08:40,667 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 10 [2019-10-14 23:08:40,668 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:08:40,671 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:08:40,672 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:08:40,672 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:27, output treesize:3 [2019-10-14 23:08:40,683 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-14 23:08:40,683 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:08:40,683 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16] total 32 [2019-10-14 23:08:40,684 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688183825] [2019-10-14 23:08:40,684 INFO L442 AbstractCegarLoop]: Interpolant automaton has 32 states [2019-10-14 23:08:40,685 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:08:40,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2019-10-14 23:08:40,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=864, Unknown=12, NotChecked=0, Total=992 [2019-10-14 23:08:40,686 INFO L87 Difference]: Start difference. First operand 98 states and 124 transitions. Second operand 32 states.